Vulkan Lokring MGLD.3000 Product Manual - Schoonover, Inc.

MGLD.3000 

OPERATING INSTRUCTIONS 

01 MGLD.3000

Multi Gas Leak Detector MGLD.3000 

Operating instructions 

Please read these operating instructions carefully and thoroughly before installation, commissioning, 

and use and follow all operating- and safety instructions. 

Please… 

do not hesitate to contact us 

in case of questions 

or technical problems 

Bitte… 

wenden Sie sich bei Fragen oder 

technischen Problemen an uns 

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Table of contents 

1. Introduction..................................................................................................................................... 4 

2. Safety instructions ......................................................................................................................... 5 

2.1. Symbols, pictograms, and icons used.............................................................................................. 5 

2.1.1. Warning symbols and instruction symbols in the text of these operating instructions ..................... 5 

2.1.2. Pictograms and icons used in screen menus................................................................................... 5 

2.1.3. Pictograms/probe control elements used ......................................................................................... 8 

2.2. General safety instructions............................................................................................................... 8 

3. Description of the device............................................................................................................. 11 

3.1. General information ........................................................................................................................ 11 

3.2. Device components ........................................................................................................................ 11 

3.2.1. Base unit......................................................................................................................................... 11 

3.2.2. Docking unit.................................................................................................................................... 12 

3.2.3. Probes ............................................................................................................................................ 13 

3.2.4. Electro-pneumatic connection line ................................................................................................. 14 

3.3. Technical data ................................................................................................................................ 14 

3.3.1. MGLD.3000 - Base unit .................................................................................................................. 14 

3.3.2. MGLD.3000 docking unit ................................................................................................................ 15 

3.3.3. Probes for the MGLD.3000............................................................................................................. 16 

4. Installation and commissioning.................................................................................................. 17 

4.1. Unpacking device from packing materials...................................................................................... 17 

4.2. Installation and commissioning the MGLD.3000............................................................................ 17 

4.2.1. Stationary operation of the device with docking unit/charging batteries on the base unit ............. 17 

4.2.2. Connecting the probe (stationary and mobile operation of the MGLD.3000)................................. 18 

4.3. Operating the MGLD.3000 ............................................................................................................. 21 

4.3.1. Basic information on the graphical user navigation........................................................................ 21 

4.3.2. Initial startup of the MGLD.3000..................................................................................................... 22 

4.3.3. Leak search mode .......................................................................................................................... 24 

4.3.4. Check + calibration......................................................................................................................... 29 

4.3.5. Settings........................................................................................................................................... 36 

4.3.6. Printing out and saving the log ....................................................................................................... 42 

4.3.7. Service............................................................................................................................................ 46 

4.4. Shutting off the device .................................................................................................................... 49 

4.5. Warning and error messages ......................................................................................................... 50 

5. Care and service........................................................................................................................... 53 

5.1. Cleaning and care .......................................................................................................................... 53 

5.2. Service............................................................................................................................................ 53 

5.3. Warranty Limitations....................................................................................................................... 54 

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1. Introduction 

The Multi Gas Leak Detector MGLD.3000 is designed for use by qualified personnel while closely following 

these operating instructions. 

These operating instructions provide information to users with proper training in gas leak detection on the 

design and function of the Multi Gas Leak Detector and also act as instructions for handling the device 

and its components. 

These operating instructions describe the condition of the Multi Gas Leak Detector as of the time of publication. 

All rights reserved for future technical changes and data changes that may affect the contents of this information! 

Conventions 

Handling instructions that consist of a sequence over time are combined into handling units. 

Safety instructions are labeled using pictograms and a signal word, and the hazard is specifically named 

where applicable. The meaning of the pictograms is provided in the "Safety instructions" section. 

Please do not hesitate to contact us with any questions or technical problems: 

………… 

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2. Safety instructions 

To ensure your own safety, and to enable problem-free and safe operation of the MGLD.3000, please 

carefully read this chapter before initial operation. 

Please observe and closely follow all safety instructions that are listed in this manual as well as all messages 

and instructions that are displayed by the MGLD.3000. 

Damage arising as a result of improper or unauthorized use of the device, or through the use of nonoriginal 

spare parts, wear parts, or consumables, is not covered under warranty! Likewise, damage to 

wear parts is not covered by the warranty! 

2.1. Symbols, pictograms, and icons used 

2.1.1. Warning symbols and instruction symbols in the text of these operating instructions 

Caution! 

This symbol indicates a source of potential danger to the user. 

Caution! 

Hot surface! 

Caution! 

Live voltage. Shock hazard. 

Caution! 

This symbol indicates a potential hazard to the device or the device 

system. 

Disconnect power 

plugs! 

Attention! 

This symbol designates information on possible operating errors and 

proper analysis of results. 

2.1.2. Pictograms and icons used in screen menus 

Menus and menu entries 

Select leak search mode 

Analysis mode for quantitative gas leak detection (determines gas concentrations 

or leak rate) 

Dynamic search mode for qualitative leak localization 

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Multipoint mode with logging function 

Check + calibration 

active 

inactive 

Check and calibration function 

Check and calibration results 

Settings of leak search environment 

Settings 

active 

inactive 

Settings for analysis mode (threshold value) 

Settings for multipoint mode (number of test points, threshold values, 

test criteria, test identification) 

Alarm signal setting 

Gas type and leakage unit setting 

Language, date, and time setting 

Print out log and save to external data medium 

active 

inactive 

Select drive for storage of log data in multipoint mode, download log 

data 

Print settings for external label printer 

Service 

active 

inactive 

Query device information 

Set up password protection 

Contact information 

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Warnings and functions 

Warning symbol - blinks yellow in case of error 

No warning present 

Probe is being initialized and heated, Probe is calibrated 

Probe not connected 

Probe active 

Password protection inactive (changes can be made to device settings) 

Password protection active (changes to device settings are not possible) 

Connected to power socket 

Not connected to power socket - battery mode 

Battery charge indicator 

… 

Buttons for numeric entry 

Confirm 

Cancel 

Delete previous character 

Cancel a multipoint leak search job 

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2.1.3. Pictograms/probe control elements used 

The following probe control elements can be assigned to different operating modes on the 

MGLD.3000. The current function of the relevant control element is explained in the relevant 

passage of these operating instructions. The following are typical functions: 

Key: Start 

Key: Confirm 

Key: Reduce sensitivity 

Key: Increase sensitivity 

2.2. General safety instructions 

Proper use 

The MGLD.3000 may only be used for the leak detection procedures described in this manual. The device 

is a gas leak detector and cannot be used for measurement purposes or for stationary monitoring of ambient 

air. 

Improper use and/or operation can potentially endanger the user or other persons, or risk damage to the 

device. Failure to adhere to the instructions for proper use in this manual will result in reduced warranty 

coverage and manufacturer liability in the event that damage does occur. 

Local requirements 

Observe the safety precautions that are applicable for operation of the device (e.g., work safety precautions, 

accident prevention guidelines, and regulations for environmental protection). 

Information on potential dangers is not a substitute for mandatory work safety precautions. 

Personnel 

The MGLD.3000 may only be operated by qualified personnel, who are also provided with training in 

proper performance of these tasks. As part of training, the contents of these operating instructions are to 

be explicitly communicated and instructions are to be provided on proper device operation. 

Use area 

The MGLD.3000 may not be used in explosive and/or other hazardous environments. Smoking is prohibited 

in places where the MGLD.3000 is in use. 

The usage area and storage area must be free of any impurities and contaminants, and in particular must 

be protected from the influence of chemical substances, e.g. silicone. 

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Siliceous- and sulfurous media or non-desorbing, inorganic impurities, e.g. tobacco smoke, oils, fats, and 

evaporating liquids, can produce contaminants which can result in changes to the sensitivity and/or selectivity 

qualities of the sensor. Possible consequences of this include reduced sensitivity, inaccurate concentration 

indicators, or a background concentration message. To detect changes in the sensor performance, 

a yearly check on sensors is performed by the manufacturer or at an authorized service center. 

Commissioning and operation 

The device is connected to the power socket using the supplied power connection cord without additional 

extensions. Use of extensions, feed lines, or connection lines for peripherals is not permitted! 

The device may only be repaired by customer service. Any unauthorized interference can endanger the 

user, jeopardize the functional reliability of the device, and cancel warranty claims. 

While searching for leaks, pay close attention to the path where the electro-pneumatic connection line 

runs between the device and the sensor. The connection line should be laid in such a way as to minimize 

the danger of tripping for the user of the device and other workers within the user's radius of activity. 

Emergency shutdown 

In case of emergency, shut off the MGLD.3000 device power switch at the back of the housing and disconnect 

the power plug. 

Electric shock 

Before opening the device, always switch it off and disconnect the power plug! 

Interventions in the device, service- or repair works can only be performed by the manufacturer's customer 

service department or by authorized and trained technicians. 

Ventilation 

Make certain that the available ventilation systems on the MGLD.3000 and accessory devices are functional. 

Concealed ventilation grids, slits, etc., can cause malfunctions or damage the device. 

Repairs, cleaning, and service 

Interventions in the device, service- or repair work may only be performed by the manufacturer's customer 

service department or by authorized trained technicians. Failure to follow these instructions can result in 

damage to the device. 

Any unauthorized interference can endanger the user, jeopardize the functional reliability of the device, 

and undermine warranty claims. 

An exception is made for the activities listed in the chapter "Care and service". 

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Sensitive electronic equipment 

Always switch off components/probes before connecting or disconnecting power. This also applies to electronic 

connections between components. 

The carbon dioxide hand probe contains a highly sensitive optical system. The system must be protected 

from any strong impact that could damage it. Impure intake air can result in condensation formation on 

optical components which may compromise the performance of the probe. 

Use of the touch screen requires clean fingers, lightweight gloves or pens that are specially designed for 

the touch screen. Physical damage (scratches) or dirt can hamper the touch screen and result in malfunctions 

and/or reduced functionality on the entire device. 

Accessories / spare parts 

Use only accessories and spare parts from the manufacturer. 

Please follow the safety guidelines contained in these operating instructions. 

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3. Description of the device 

3.1. General information 

The MGLD.3000 Multi Gas Leak Detector is a computer-controlled multi-gas detector for both mobile and 

stationary operation in detecting leaks of selected gases and refrigerants. 

The modular device consists of a portable base unit, which can be used as desired for either onsite measurement 

(battery mode) or in stationary mode, and a docking-/charging unit for stationary mains operation, 

and can be run with various active probes for gas detection (e.g. for refrigerants, hydrogen, and carbon 

dioxide). 

The device, data indicators, and system messages, etc., are configured and controlled via a graphical 

user interface on a graphic Touch Screen color display. In addition, an acoustic signal is emitted from an 

integrated mini-speaker. 

The device offers various operating modes for leak detection: 

• Analysis mode for quantitative gas leak detection (concentrations or leak rate) 

• Dynamic search mode for qualitative leak localization 

• Multipoint mode with logging function. 

For integration with testing environments, the MGLD.3000 features various standardized interfaces 

(USB2.0, RS232), e.g. for barcode scanners, printers, and external storage media. 

3.2. Device components 

3.2.1. Base unit 

3 

1… Touch screen display 

2… Connection socket for probe 

3… Transport handle 

1 

2 

Figure 1: MGLD.3000 - Base unit (front view) 

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13 12 

10 

4 5 6 

7 8 

9 

Figure 2: MGLD.3000 - Base unit (rear view) 

11 

10 

4… On-/off switch 

5… RS232 

6… VGA 

7… RJ45 (socket) 

8… USB2 

9… USB1 

10… Ventilator 

11... Transport handle 

12… Speaker jack (mini-jack) 

13... Mini speaker 

Caution 

The power supply of the MGLD.3000 base unit for stationary operation and for charging the batteries that 

are integrated in the base unit may only be supplied using the included docking unit. 

3.2.2. Docking unit 

The docking unit is used for the power supply of the base unit via mains power for the stationary mode of 

the MGLD.3000. Defined charging of the batteries in the base unit occurs simultaneously. 

Caution 

The docking unit may only be used for docking the base unit, for the power supply to the base unit and for 

charging the batteries on the MGLD.3000 base unit. The docking unit comes included with the 

MGLD.3000. 

1 

1 

2 

1… Guide pin for base unit 

2… Connecting jack for base unit 

Figure 3: MGLD.3000 - Docking unit (front view) 

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5 

3… Connection for power cable 

4… Plug connectors for control 

valve terminal (optional) 

5… USB3 

3 

4 

Figure 4: MGLD.3000 - Docking unit (rear view) 

3.2.3. Probes 

Various active probes from the manufacturer for refrigerants, hydrogen, and carbon dioxide are available for the 

MGLD.3000. The probes consist of a compact aluminum housing and a sensor which is offset with a flexible extension. 

The probe features an LC display (4-digit), LEDs for function and trend indicators (1 green, 2 x yellow, and 2 x 

red), and a control panel with 4 keys for "remote control" of selected leak search functions of the MGLD.3000 

(Figure 5: Probe for MGLD.3000 (Example: refrigerant) 

. 

1… flexible sensor extension 

2… Sensor head 

3… LED function and trend indicators 

4… LC display 

5… Control panel 

5.1… "Start" key 

5.2… "Confirm" key 

5.3… "Reduce sensitivity" key 

5.4… "Increase sensitivity" key 

6… Socket for connection line 

Figure 5: Probe for MGLD.3000 (Example: refrigerant) 

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3.2.4. Electro-pneumatic connection line 

The relevant probe is connected with the base unit of the MGLD 3000 using a special electro-pneumatic connection 

line which is included with the MGLD.3000 

(Figure 6: Electro-pneumatic connection line for connecting a probe to the base unit of the MGLD.3000 

). 

Figure 6: Electro-pneumatic connection line for connecting a probe to the base unit of the MGLD.3000 

3.3. Technical data 

3.3.1. MGLD.3000 - Base unit 

Time from startup to operational readiness 

< 120 sec (varies by sensor) 

Response time (varies by sensor) 



Charging time 

approx. 8 hours 

Permissible operating temperature 0 °C – +55 °C 

Permissible operating humidity 

20... 80 % rel. hum. 

Permissible storage temperature –25 °C – +70 °C 

Permissible storage humidity 

20... 80 % rel. hum. 

Permissible storage conditions 

The storage area and environment must be free of any 

impurities and contaminants, and in particular must be 

protected from the influence of chemical substances, e.g. 

silicone. 

Base unit dimensions (length x width x height) 

approx. 262 mm x 292 mm x 174 mm 

Net weight (base unit) 

approx. 6.250 kg (without probe and connection line) 

Conformity: 

2002/95/EC Restriction of the use of Hazardous Substances 

Directive (RoHS) 

3.3.2. MGLD.3000 docking unit 

Interfaces 1 x USB 2.0 

1 x 8-pin plug connector with 4 switching outputs (max. 

1A/125 VAC) (optional) 

Permissible operating temperature 0 °C – +55 °C 


20... 80% rel. hum. 

Permissible storage temperature -25 °C – +70 °C 


20... 80% rel. hum. 

Power supply (docking unit) 

100-240 V, 50/60 Hz 

Power consumption 

max. 100W (incl. optional switching outputs) 

Protection class 

Permissible storage conditions 

The storage area and environment must be free of any 

impurities and contaminants, and in particular must be 

protected from the influence of chemical substances, e.g. 

silicone. 

Docking unit dimensions (length x width x height) approx. 262 mm x 292 mm x 110 mm 

Net weight (docking unit) 

approx. 2.450 kg (without connection line) 

Conformity: 

2002/95/EC Restriction of the use of Hazardous Substances 

Directive (RoHS) 

Base unit and docking unit dimensions (length x width x 

height) 

Net weight (base unit and docking unit) 

approx. 262 mm x 292 mm x 265 mm 

approx. 8.7 kg (without probe and connection line) 

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3.3.3. Probes for the MGLD.3000 

Product number L14004006 L14004007 L14004008 

Product description 

LOKtool Refrigerant 

Probe 

LOKtool Tracergas Probe LOKtool CO2-R744 

Probe 

Labeling on the housing 

REFRIGERANT TRACERGAS / H2 CO2 

Detectable gases R22, R134a, R290, 

R404A, R407C, R410A*, 

R600a* 

Lower detection threshold value 10 ppm, 0.3 g/year 1 ppm 100 ppm, 5 g/year 

*0.1 g/year 

Response time < 1 sec < 1 sec < 2 sec 

Dimensions (probe without flexible 

sensor extension) 

approx. 192 mm x 40 

mm x 28 mm 

approx. 192 mm x 40 mm 

x 28 mm 


mm x 28 mm 

Dimensions (probe with flexible 



mm x 28 mm 

approx. 522 mm x 40 mm 

x 28 mm 


mm x 28 mm 

Dimensions (probe with flexible approx. 295 g approx. 295 g approx. 410 g 


Length of connection line approx. 6 m 

Net weight of connection line approx. 430 g 

Permissible operating temperature 

0 °C – +55 °C 


20... 80 % rel. hum. 

Permissible storage temperature -25 °C – +70 °C 


20... 80 % rel. hum. 

Permissible storage conditions The storage area and environment must be free of any impurities and contaminants, 

and in particular must be protected from the influence of chemical substances, 

e.g. silicone. 

H 2 

R744 

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4. Installation and commissioning 

Caution! 

Follow the safety instructions provided in chapter 2. 

4.1. Unpacking device from packing materials 

When unpacking the device, examine the device and compare it with the packing list to make sure that all 

parts are included and undamaged. 

Do not discard the transport packaging. In the event that the materials need to be returned, they will need 

to be returned in the original packaging. Only in this way can the returned materials be protected from 

damage during transport. 

4.2. Installation and commissioning the MGLD.3000 

4.2.1. Stationary operation of the device with docking unit/charging batteries on 

the base unit 

Caution! 

Exercise caution during device assembly and setup to prevent injury to hands and fingers! 

Place the docking unit on its feet in the designated location. A level, dry, secure, and stable surface is 

required. Make sure the docking unit is placed on a level and stable surface where it cannot slip or wobble. 

Connect the included power connection cord to the docking unit power connection. 

Caution! 

Observe the layout of both devices (front side by front side)! There must be no foreign objects between 

the docking unit and the base unit 

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Place the base unit with its 4 guide bushes onto the 4 guide pins of the docking unit 

(Figure 7: Placing the base unit on the docking unit 

). 

 

Figure 7: Placing the base unit on the docking unit 

Connect the docking unit power connection cord with the power socket. 

The batteries are already being charged in the base unit in this state (base unit switched off). The charging 

period is approx. 8 hours with empty batteries. 

4.2.2. Connecting the probe (stationary and mobile operation of the MGLD.3000) 

Caution! 

Only probes that are supplied by the manufacturer, as well as the included connection line, can be used 

for operation with the MGLD.3000. 

Before installation and operation, check the probe and the connection line for damage. The connection 

line must be free of any kinks, crushed or compressed places, cracks, or other damage and/or contamination. 

While operating the probe, make sure that the device is not exposed to crushing, stretching, compressing, 

or to any deformations and impurities. 

Connect the relevant probe with the provided connection socket with the plug of the supplied connection line. For 

maximum accuracy of positioning and in connecting the plug on the connection line with the socket on the probe, the 

plug features a nose and the socket has a matching opening. The plugs are also provided with an automatic stopping 

mechanism, which provides a firm connection between the relevant plug and socket. When connecting the connection 

line with the probe, make sure that you can hear and feel the plug engage with the socket of the probe. 

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(Figure 8: Plugging the connection line plug into the sensor socket 

). 

Figure 8: Plugging the connection line plug into the sensor socket 

Connect the plug on the other end of the connection line of the sensor with the appropriate socket on the 

base unit while carefully observing the above information. Make sure that you are able to feel and hear 

the plug engage with the socket on the base unit. 

Figure 9: MGLD.3000 with connected sensor 

The connection of sensor and base unit may only be made via the connection line when the MGLD 3000 

is switched off. 

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To disconnect the connection between the relevant plug of the connection line and/or the relevant socket 

on the sensor or base unit, grasp the plug with your thumb and index finger on the metal ring on the exterior 

of the plug, carefully push it away from the socket, and then remove the plug. 

Figure 10: Loosening the lock and disconnecting the plug of the connection line from the socket 

Caution! 

The sensor and base unit can only be connected with (or disconnected from) the connection line when the 

MGLD 3000 is switched off! 

Force must not be use when connecting or disconnection the connection line and probe or base unit. Otherwise 

you may damage the plugs, connection line and/or the sockets in the probe or base unit, thus limiting 

device functionality and canceling warranty coverage. 

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4.3. Operating the MGLD.3000 

4.3.1. Basic information on the graphical user navigation 

Caution! 

The base unit of the MGLD.3000 is controlled via touch screen. Use of the touch screen requires clean 

fingers, lightweight gloves or pens that are specially designed for the touch screen. Mechanical damage 

(scratches) or dirt can damage the touch screen or result in malfunctions and/or unsatisfactory performance 

of the entire device. 

The menu tab and main menu are located at the top of the screen. All operating modes can be selected 

and all of the settings can be made from the main menu. 

By pressing the pictograms in the main menu, the menu bar moves down and the relevant submenu is 

displayed. The individual operating modes and settings can be accessed/entered by pressing the pictograms 

of the relevant submenu. 

The submenu will remain displayed while a pictogram or any other place on the touch screen is touched, 

otherwise it will automatically disappear after 10 sec. 

When password protection is activated, only the "leak search mode" is available. All other menu items in 

the main menu are inactive. 

The menu structure is shown in the summary below: 

Select leak search mode 

Analysis mode for quantitative gas leak detection (determines gas concentrations 

or leak rate) 

Dynamic search mode for qualitative leak localization 

Multipoint mode with logging function 


active 

inactive 

Check and calibration function 


Settings of leak search environment 

Settings 

active 

inactive 

Settings for analysis mode (threshold value) 

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Settings for multipoint mode (number of test points, threshold values, 

test criteria, test identification) 

Alarm signal setting 

Gas type and leakage unit setting 

Language, date, and time setting 


active 

inactive 

Select drive for storage of log data in multipoint mode, download log 

data 

Print settings for external label printer 

Service 

active 

inactive 


Set up password protection 


4.3.2. Initial startup of the MGLD.3000 

When you have installed the MGLD.3000 as described in 4.2., switch on the device by briefly pressing the 

power switch on the rear of the base unit once. The base unit acknowledges the start with a brief signal 

tone. 

Probe 

The probe also acknowledges the start with a short signal tone, the green LED blinks, the word "HEAT" 

appears in the display indicating that the gas sensor is heating. 

Base unit 

When the system software starts, the MGLD.3000 displays the start screen. 

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Start Menus Warnings / functions 

Select leak search 

mode 

inactive 

Warning symbol - blinks 

while sensor is heated 

Sensor is heating 

inactive 

inactive 

inactive 

protected with password 


Battery charge status 

Yellow background 

Warning/error present: 

Sensor is heating 

After heating up the probe (1 - 2 min. depending on special type) the 

MGLD.3000 is ready to operate and the probe is active. 

Device ready to operate 

Probe active 

The MGLD.3000 provides the option to protect the settings with a user password 

and is protected with an initial password set at the factory. 

Press the "lock" pictogram to access the user password query. 


Password 


mode 

inactive 

Warnings / functions 


Probe active 

inactive 

inactive 

inactive 


Connected to power 

socket 


Entry 

Enter the correct initial password (123) to remove the lock. 123 

Delete the previous character 

Confirm 

Cancel 

Next, the leak search mode opens that was in use before the device was last 

switched off. 

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4.3.3. Leak search mode 

Analysis mode Menus Warnings / functions 


mode 



Probe active 

Settings 

Print out log and 

save to external 

data medium 

Service (device 

status, password, 

contact information) 

unlocked 



The leak search mode being used is displayed below the menu bar on the 

left, the alarm threshold setting is displayed in the center, and the selected 

gas type is displayed on the right . 

The MGLD.3000 automatically detects the type of sensor that is connected 

at the start. The gas type that was most recently selected with 

this special type is saved and displayed by special type, either in red 

(hydrogen), blue (refrigerant), or black (CO2) (example above: 

5%H2). 

This and the indicator of the settings are adequate in the other leak 

search modes "dynamic search mode" and "multipoint mode". 

The analysis mode is provided for quantitative gas leak detection. Based on 

the setting, the currently detected concentration or leak rate is displayed as a 

number with the relevant unit (e.g., ppm for the concentration) and in graphical 

form as a temporal progression. As the concentration increases the frequency 

increases and the tone sequence of the acoustic signal becomes 

shorter. When the threshold boundary is exceeded, a continuous sound is 

emitted and the screen background and numeric data are colored red. 

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Probe 

• Display indicator of the currently measured concentration (value and unit 

ppm) or leak rate (value only). 

• Change to dynamic search mode 

Entry 

• Change (back) to analysis mode 

• As the concentration increases the tone sequence of the acoustic signal 

of the hand probe becomes shorter. When the threshold value is exceeded, 

a continuous tone is emitted. The LED trend indicator also acts 

as an indicator for the current concentration relative to the threshold 

value. 

Up to 22%, green LED 

Up to 44%, 1st yellow LED 

Up to 66%, 2nd yellow LED 

Up to 100%, 1st red LED 

Up to 100%, 2nd red LED 

Dynamic search mode Menus Warnings / functions 


mode 



Probe active 

Settings 



data medium 




unlocked 



The dynamic search mode is provided for quick leak detection. The display of 

the leakage level is made qualitatively using an indicator with changing color 

(green, yellow or red with increasing leakage level). 

Using the sliding controller, the sensitivity can be set in 5 levels (min. - lowest 

sensitivity to max - highest sensitivity). 

The optical and acoustic signal outputs are not based on the absolute concentration 

or leak rate, but rather on the quantity of their change. A large 

change in concentration generally indicates a large leak. 

After detection of a large concentration increase and subsequent removal of 

the probe from the leakage, "AUTOZERO" can be displayed between the 

sliding controller and the indicator for the leakage level. The sensor returns to 

its zero point while this message is visible. During this time the response 

characteristics are limited particularly when small leakages are detected. 

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The signal output in dynamic search mode is also dependent on the 

speed with which the sensor is approaching the leak. A very slow 

approach corresponds to a slow increase in concentration and accordingly 

a minimal change in concentration. 

Configuration of sensitivity 

• Touch screen: Touching and vertical sliding of the indicator on the sliding 

controller to the desired sensitivity level. 

• Sensor (each press of the relevant button increases or reduces the sensitivity 

by 1 level) 

When changing the sensitivity level, there is no indicator of this in the 

display for sensor. The configured sensitivity level can only be controlled 

via the touch screen. 

The most recent sensitivity level setting is also retained after the 

base unit is switched off and back on. 

Probe 


in ppm) or leak rage (value only) - the value corresponds to the value of 

the concentration in analysis mode. 

• Change to analysis mode 

• Change (back) to dynamic search mode 

• As the concentration increases the tone sequence of the acoustic signal 

of the hand probe becomes shorter. The LED trend indicator also acts as 

an indicator for the change in concentration. 

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Multipoint mode Menus Warnings / functions 


mode 


Cancel a multipoint leak 

search 


Settings 



data medium 




Probe active 

unlocked 



Like analysis mode, multipoint mode is provided for quantitative gas leak 

detection. This mode however offers the added option of determining a cumulative 

concentration or leak rate using multiple test points and to log and print 

out the results of the test sequence. 

The maximum currently measured concentration or leak rate of the current 

test point and the sum of concentrations or leak rates of all test points up to 

the last/current test point are displayed, based on the setting, as a number 

with the relevant unit (e.g. g/y for the leak rate) and in graphical form as a 

temporal progression. 

see menu Settings - set gas type and leak unit 

see menu Print out log and save to external data storage medium 

- select drive for storage of log data in multipoint mode 

There are anywhere between 1 and 30 test points in a test sequence. 

The following test criteria are possible: 

• Maximum concentration/-leakage rate of each individual test point over 

point threshold 

or 

• Sum of maximum concentrations/-leakage rates of all test points above 

cumulative threshold. 

see menu Settings - Settings for multipoint mode 

Touch Screen indicator (e.g.): 

ID… Test identifier, is either issued automatically by the device at the start of 

a test sequence (format: JJJJMMTTHHMMSS) or can also be read with 

a barcode scanner as desired 

BAL_MGLD3000_20101001_en.doc 28-54



3/5… Number of the current test point / total number of test points 

and to the right of this is the maximum current measured concentration 

or leakage rate of the current test point (in the example above, test 

point no. 3 and 0.9 g/y) 

∑… Sum of the leakage rates or concentrations of all test points up to the 

last/current test point 

The current concentration or leakage rate of the current test point is 

shown in the display for the probe. 

• When the threshold point value is exceeded the background of the 

screen and the numeric indicator of the concentration or leakage rate of 

the test point turns red. When the cumulative threshold value is exceeded, 

the number indicator of the cumulative concentration or leakage 

rate turns red. The acoustic signal is emitted in a similar manner as in 

analysis mode. 

Probe 

• Start of the test sequence with the selection of the first test point and 

indicator for the number of the current test point and the total number of 

configured test points in the display (Ex.: 1 of 5). 


in ppm) or leakage rate (value only) of the current test point. The readiness 

for detection of the test point is indicated by an increasing and decreasing 

status button under the number indicator. 

• Completion of the detection of the selected test point 

01.05 

20 ppm 

• Selection of the next test point and indicator for the number of the current 

test point and the total number of configured test points in the display 

(Ex.: 2 of 5) 


in ppm) or leakage rate (value only) of the current test point 

• Detection of the selected test point finished 

02.05 

30 ppm 

• … 

• Selection of the last test point and indicator for the number of the current 

test point and the total number of configured test points in the display 

(Ex.: 5 of 5) 


in ppm) or leakage rate (value only) of the current test point 

• Completion of the detection of the last test point 

05.05 

30 ppm 

• Indicator of the results of the test sequence 

BAL_MGLD3000_20101001_en.doc 29-54



• When the last test sequence is finished: Start of the next test sequence 

• Verlassen des Mehrpunktmodus: „Zurück“ 

A multi-point leak detection could be stopped by pressing the "BREAK" 

ended and the multi-point mode is been able to leave. 

After leaving the multi-point mode, all leak detection modes are available on 

the menu selection to call or set changes. 

For each test series, a log is created that is stored in the device or on memory 

stick. The print of a test report for example as a label is optionally possible. 

4.3.4. Check + calibration 

Check + calibration Menu entries Warnings / functions 

Select reference leak 

and start calibration 

procedure 

Check and calibration 

results 

Environment setting 


Probe active 

unlocked 



While using the hand probe the sensitivity of the gas sensors being used can 

change, even while being used properly (e.g. because of impurities). 

To compensate for these changes in sensitivity, a function is provided for testing 

the sensitivity on reference leaks and for setting a gas correction factor. 

BAL_MGLD3000_20101001_en.doc 30-54



Before starting the functional test, the hand probe must be switched 

on for approx. 5 min. at a minimum and run in "clean" surrounding air 

(minimal or no background concentration of the gas types that are 

specific to the special type). These conditions are required for calculation 

of the zero point. If no zero point can be set, the functional test 

is stopped. The device must then be restarted and the functional test 

must be repeated after waiting 5 min. 

Continuous contact during the functional test must be ensured between 

the Teflon tip of the hand probe with the head of the test leakage. 

Only manufacturer-approved reference leaks can be used for the 

functional test. 

The functional test must be carried out in enclosed spaces with minimal 

air movement. 

BAL_MGLD3000_20101001_en.doc 31-54



Select reference leak and start calibration 

procedure 



during check and calibration 

Probe is initialized 

unlocked 



First, a reference leak must be selected that is suitable for the gas type being 

used. 

The available reference leaks are pre-configured by technical support. 

List selection (press a list entry, scroll by pressing and simultaneously moving 

the finger up and down or by pressing the scroll bar, the current setting is 

highlighted in light blue) 

Start of test by pressing the "Start" button and pressing the "Start" key on 

the hand probe 

Cancel and return to the previous leak search menu 

"CAL" appears in the display during the entire test- and calibration procedure. 

Auto zero 





The present zero point in the surrounding air is set. Once this point is 

reached, the message "RefLeak" is displayed. 


BAL_MGLD3000_20101001_en.doc 32-54



Calibration procedure 





The sensor tip must be held at the reference leak within 5 seconds. If the 

reference leak is detected (through an increase in the concentration) the functional 

test begins, otherwise the procedure is canceled. Make sure the reference 

leak is opened and is filled with test gas in the specified pressure range. 

The functional test must be repeated. 

If the measured concentration value is inside the specified range (set-point +/- 

30%), the functional test is completed successfully and a correction factor is 

set to adjust the sensitivity. 


Tracing 





The sensitivity level of the hand probe is indicated by the position of the 

pointer in the pointer instrument. If the sensitivity matches the set-point values, 

this is indicated by a pointer position in the middle green range of the 

scale. The functional test was passed. If the sensitivity is within the specified 

tolerance limits, but is smaller or higher than the set-point, this is indicated by 

a pointer that is in the left or right yellow part of the scale range. The functional 

test was passed and a correction factor was calculated. 

BAL_MGLD3000_20101001_en.doc 33-54



OK - Save the correction factor in the probe. 


If the sensitivity is outside the specified tolerance limits, this is indicated by a 

pointer that is at either red end of the scale on the left or right. The functional 

test was not passed. The correction factor was set to the maximum limit. 

Start the new test by pressing the "Start" button 


If the test is run several consecutive times without a passing result, 

the following procedure can be followed: 

• Make sure that the Teflon tip was being held fully in front of the 

gas outlet of the reference leak and that there is no air movement 

in the environment 

• Make sure that the reference leak is opened for long enough to 

be completely permeated by the test gas (follow manufacturer 

instructions) 

• Make sure that the pressure of the test gas is consistent with the 

reference leak manufacturer's specifications 

• Restart device and repeat test (when the device is started the 

sensor and the gas sensor system are initialized) 

• Contact technical support 

BAL_MGLD3000_20101001_en.doc 34-54








Date and results of the last 10 functional tests are logged for each probe. 

Return to the previous leak search menu 

Return to the previous leak search menu 


In addition to the sensitivity of the hand probe, there is a second factor that must be taken into account for 

a successful leak search. 

To determine the size of a leak, it is necessary that wherever possible the entire gas quantity that flows 

through the leak within a specific time unit is detected by the hand probe of the leak detector and can thus 

be detected by the gas sensor. The transfer path from the leak to the leak detector is directly determined 

by the air flow in the surrounding air. There are different flows in the surrounding air in different environments 

(e.g., wind during a leak test conducted outdoors, a continuous air draft caused by air-conditioners 

in indoor spaces). The larger the flow in the surrounding air, the less gas flowing from the leak that 

reaches the gas sensor in the hand probe. However, to enable a leak search to be conducted in variable 

environmental situations, a transfer function can be selected from the leak to the gas sensor which by 

means of a mathematical procedure increases the measured concentration within specific limits and in this 

way should indirectly account for the gas portion not reaching the gas sensor. 

The change in selectivity is another way of detecting leaks adapt to specific environmental conditions. 

Setting a high selectivity allows a separation between the refrigerant gases of the detectable probe. A 

strong separation, however, can usually only be achieved under non-congested environment with very low 

background concentrations of other detectable gases from the gas sensor (eg, hydrocarbons, hydrogen). 

Setting a low selectivity allows detection of leaks, even under polluted ambient conditions. This setting, 

however, the separation between the different refrigerants is reduced. 

A too high setting can affect the selectivity of detection of leakage in polluted environments and 

the output to low concentrations or leak. 

BAL_MGLD3000_20101001_en.doc 35-54



Environment and selectivity setting Menu entries Warnings / functions 

Select reference leak 

and start calibration 

procedure 

Check and calibration 

results 



Probe active 

unlocked 



Setting the environment 

This dialog is used to configure the environmental function for all leak search 

modes. 

The following selection can be made: 

• Exterior areas (outdoors) 

• Hall (large air flow, e.g. from open doors) 

• Room (small air flow, e.g. from air-conditioners) 

• Lab (no air flow) 

The transfer functions "Outdoor", "Hall", and "Room" are only suitable 

for a quick leak search. For a quantitative determination of 

leakage level, only the "lab" transfer function is recommended. 

Setting the selectivity 

By touching and moving the slider, the selectivity in each direction is changed: 

• Minimum selectivity: Low selectivity in polluted environments 

• Maximum selectivity: high selectivity low-effected environments in 

The selectivity adjustment is only in the refrigerant-probe effec 

OK - Confirmation, apply the settings and return to the preceding existing leak 

detection mode. 

Cancel and reset to original value 

BAL_MGLD3000_20101001_en.doc 36-54



4.3.5. Settings 

Settings Menu entries Warnings / functions 

Limit value for analysis 

mode 

Settings for multipoint 

mode 

Volume setting for 

alarm signal 

Gas type and leakage 

unit setting 

Language setting, 

date- and time setting 


Probe active 

unlocked 



Settings - limit value for analysis mode Menu entries Warnings / functions 


mode 


mode 


alarm signal 


unit setting 

Language setting, dateand 

time setting 


Probe active 

unlocked 



This dialogue allows you to enter the limit value for the analysis mode as a 

numeric value. 

The currently configured limit value is indicated in the currently selected unit 

(concentration or leak rate). 

To change the value, enter the change using the numeric keypad. 

Entry, e.g. 10.5 


Confirm, accept entry, and return to analysis mode 

After entering or changing the limit value, the diagram is rescaled in 

the diagram. 


BAL_MGLD3000_20101001_en.doc 37-54



Settings - Settings for multipoint mode Menu entries Warnings / functions 


mode 


mode 


alarm signal 


unit setting 


time setting 


Probe active 

unlocked 



Number of test points 

This dialogue is used to enter the desired number of test points in a test sequence 

as a numeric value. Any value between 1 and 30 can be chosen 

To enter or change the value, enter the change using the numeric keypad. 

To open the dialog, press the display field for the number of the test points. 

Entry, e.g. 5 


Confirm, accept entry, and return to the previous menu. 

Cancel, reset to the original value, and return to the previous menu 

Limit value of the test point 

This dialog is used to enter the upper limit value as a numeric value (concentration 

or leak rate according to settings) for each test point as a numeric 

value. 

see menu Settings - Set gas type and leak unit 


To open the dialogue, touch the display field for the limit value for each test 

point (point limit). 

Entry, e.g. 5 




BAL_MGLD3000_20101001_en.doc 38-54



Limit value for the total of all test points 

This dialogue is used to enter the limit value as a numeric value (concentration 

or leak rate according to settings) for the sum of all test points. 

see menu Settings - Set gas type and leak unit 


To open the dialogue, touch the display field for the limit value for all test 

points (cumulative limit). 

Entry, e.g. 15 




Test criteria for multipoint tests 

Alternately, the following requirements can be set: 

• Adherence to the configured limit value for each test point 

(Fail on Point) 

Activation/deactivation: 

Touch the "Failed" button to the right of the display field for the limit value 

for each test point (Point Limit) - depending on the status, the display will 

change from deactivated (dark blue background) to activated (light blue 

background) 

• Adherence to the configured cumulative limit value for all test 

points (Fail on Total) 

Activation/deactivation: 

Touch the "Failed" button to the right of the display field for the limit value 

for all test points (Total Limit) - depending on the status, the display will 

change from deactivated (dark blue background) to activated (light blue 

background) 

• Adherence to both limit values 

Both buttons activated. 

• No test criteria identified 

Both buttons deactivated. 

Test designation (ID) setting in multipoint mode 

In this dialogue you can identify how the test designation (ID) should be made 

in the multipoint mode: 

• AUTOID: Automatic assignment of a time stamp as a test ID (format 

YYYYMMDDHHMMSS) 

BAL_MGLD3000_20101001_en.doc 39-54



• SCAN ID: The test ID is queried before the start of the test and is obtained 

via barcode scanner 

The test ID is entered as the name of the log file. With SCAN ID a time stamp 

is also appended to a scanned or entered ID which enables logging of repeat 

messages without overwriting the previous log file(s). 

The scanner must be configured so that the scanned ID ends with a 

. 

Confirm, accept the values or settings, and return to the previous leak search 

mode 

After entering or changing the limit value, the diagram is rescaled in 

multipoint mode. 

Cancel, reset to original values and return to previous leak search mode 

Settings - Volume setting for alarm signal Menu entries Warnings / functions 


mode 


mode 


alarm signal 


unit setting 


time setting 


Probe active 

unlocked 



The volume of all acoustic signals of the base unit can be set in 15 levels 

using a sliding controller (zero volume: sound off). 

Setting the volume 

Move the volume indicator by pressing the desired volume position. The base 

unit will emit control sounds for the volume configured. 

Setting signal in probe 

In addition to emitting an alarm signal from the base unit, a signal can also be 

emitted in the hand probe. The signal is activated or deactivated using the 

blue button. 

Confirm and return to previous leak search mode 


BAL_MGLD3000_20101001_en.doc 40-54



Settings - Gas type and leakage unit setting Menu entries Warnings / functions 


mode 


mode 


alarm signal 


unit setting 


time setting 


Probe active 

unlocked 



This dialog allows you to preset the gas type and the unit for the indicated 

values (concentration or leak rate). 

The current settings are always highlighted in light blue. 

Gas types 

• H2: 100% hydrogen 

• 5% H2: 5% hydrogen in nitrogen 

• ~R134a: equivalence leak rate for R134a while using trace gas 

• ~R600a: equivalence leak rate for R600a while using trace gas 

The leak rate calculated here is only a guideline. A precise 

calculation is not possible because for a complete equivalence 

analysis between trace gas and R134a/R600a. Leak-specific 

parameters must be considered which vary for the leaks being 

analyzed and in general are unknown in the field. 

• R22, R134a, R290, R404A, R407C, R410A, R600a: Refrigerant 

• C02: carbon dioxide 

The preset gas type is indicated in the outputs of leak search modes. 

Setting the gas type 


the finger up and down or by pressing the scroll bar, the current setting is highlighted 

in light blue) 

Unit for concentration or leak rate 

Concentrations are generally determined by the device (ppm) and are 

then converted to leak rates. The critical unit is thus the concentration 

data in ppm. 

The other units, g/y (gram/year), oz/y (ounces/year), atm ccm/s (atmospheres 

cubic centimeters/sec) or mbar l/s are calculated quantities 

and are dependent on a constant flow through the hand probe 

BAL_MGLD3000_20101001_en.doc 41-54



Setting the unit for concentration or leak rate 


the finger up and down or by pressing the scroll bar, the current setting is highlighted 

in light blue) 

Confirm, accept entry, and return to previous leak search mode 


Settings - Language setting, date- and time 

setting 

Menu entries 


mode 


mode 


alarm signal 


unit setting 


time setting 



Probe active 

unlocked 



This menu is used to enter settings for the language for navigation, as well as 

the date and time. 

Date and time refer to system date- and time. These settings are used for 

such purposes as logging, for example. 

Language 

Once the language is selected in the list, the user navigation will then be provided 

in that language. 

Currently the following languages are available: German, English (default 

setting), French, Italian, Portuguese, and Spanish. 



highlighted in light blue), e.g. 

English 

BAL_MGLD3000_20101001_en.doc 42-54



Time 

Touch the time indicator in the entry dialogue 

Delete the time displayed 

Enter the current time from left to right in the format HHMMSS, e.g. for 

15:29:00 152900 

Confirm and return to previous dialogue 


Date 

Touch the date indicator in the entry dialogue 

Delete the date displayed 

Enter the current date from left to right in the format DDMMYY, e.g. for 

14.06.2010 140610 



Accept and save settings 

Confirm and return to previous dialog 

Cancel and reset to the original settings and values 

4.3.6. Printing out and saving the log 

Print out log and save to external data medium Menu entries Warnings / functions 

Select drive for storage 

of log data in 

multipoint mode 

Print settings for external 

label printer 


Probe active 

unlocked 



BAL_MGLD3000_20101001_en.doc 43-54



In multipoint mode the results of the completed leak searches are logged. 

The menu can be used to select the drive in which this data will be stored. 

The following options are provided: 

• Drive C: internal hard drive 

• Drive D, etc.: external storage media connected via USB (e.g., USB stick 

or external drive) 

In addition to the drive letters, the free space and total capacity of the storage 

medium is displayed in GB. 

Selection of drive for storage 



highlighted in light blue), e.g. 


C 

Cancel and reset to the original settings and values 

Downloading data to an external storage medium 

All log files stored on the internal device drive can later be downloaded to an 

external storage medium and deleted from the internal drive. 

Select the drive from the list and press the "Download" button. The progress 

bar shows the download progress and the number of downloaded files. 

BAL_MGLD3000_20101001_en.doc 44-54



Sample log: 

Makeup of the name of the log file: 

_.txt 

e.g.: 4342610640217664_20100322151954.txt 

1: ID: 4342610640217664 

2: Start: 22.03.2010 15:18:17 End: 22.03.2010 15:19:54 

3: MGLD.3000: 1003001/Custom_H2_01/>100200023.4101.13-DGS1610030913 

4: TEST: 5%H2 5.00g/y/15.00g/y 

5: P01/05 1.07 g/y 1 

6: P02/05 0.69 g/y 1 

7: P03/05 0.58 g/y 1 

8: P04/05 0.15 g/y 1 

9: P05/05 0.57 g/y 1 

10: Total 3.07 g/y 1 

11: Result Passed 

Line 1: Test ID 

Line 2: Test start and test end 

Line 3: MGLD serial number / test equipment number of customer / hand 

probe serial number 

Line 4: Test description of test gas, point limit value, total limit value 

Lines 5-9: Test results for each test point: Test point number, Concentration/Leak 

rate, Unit, Passed / Not passed 

Line 10: Total concentration/-leak rate, Unit, Passed / Not passed 

Line 11: Total test result 

To prevent possible loss of data, make sure system is switched off 

before removing removable data media! 


Menu entries 

Select drive for storage 

of log data in multipoint 

mode 

Print settings for external 

label printer 



Probe active 

unlocked 



In multipoint mode the test results can also be printed out on a label. 

The print function is optional and currently is only available for select label 

printers. For more information, please contact customer support. 

BAL_MGLD3000_20101001_en.doc 45-54



Activating/deactivating print function 

Touch the printer button and the display will change from deactivated (dark 

blue background) to activated (light blue background) depending on the status 

of the print function 

Confirm and return to previous dialog 


BAL_MGLD3000_20101001_en.doc 46-54



4.3.7. Service 

Service Menus Warnings / functions 


Set up password 


Probe active 


unlocked 



Service - Query device status Menus Warnings / functions 




Probe active 


unlocked 



BAL_MGLD3000_20101001_en.doc 47-54



By selecting the "Query device status" menu item, the device information of 

the base unit will be indicated 

MGLD BASE UNIT 

S/N: … Manufacturer serial number 

HW:… Hardware version number 

SW:… Software version number 

and the currently connected probe 

PROBE 

S/N: … Serial number 

Custom ID: … e.g. test equipment number (can only be set up by customer 

support) 

First use: … Date of first use of the probe, 

Last use: … Date of last use of the probe 

Operation Hours: 

- Total: … Total hours of operation, 

- Last Calibration: … Hours of operation since last calibration of 

probe 

Return to previous leak search mode 


Service - Setting up password (user) Menus Warnings / functions 




Probe active 


unlocked 



The MGLD.3000 comes preset with superuser password protection. 

This password and the related configuration options are reserved for customer 

support or a customer administrator. 

This way it is possible to set up a user password to protect the device settings 

and/or limit the number of users, for example. 

The superuser password is entered using the numeric keypad. 

Entry, e.g. 123 

For security reasons, the password is shown as a ****** character series. 

BAL_MGLD3000_20101001_en.doc 48-54




Confirm 

Cancel and return to previous leak search mode 

Once the superuser password has been entered correctly, the following dialog 

is displayed for setup and activation of a user password. 

Service - Setting up password (user) Menus Warnings / functions 




Probe active 


unlocked 



The user password can contain a sequence of digits 0… 9 of any length you 

like. 

Touch the password field display in the entry dialog (numeric keypad). 

Delete the time displayed password 

Enter the new password, e.g. 123 

Confirm and return to previous password dialog 

Cancel, reset to original values and return to previous password dialog 

Activating/deactivating password protection 

Press the button for password protection - the display will change from deactivated 

(dark blue background) to activated (light blue background) depending 

on the status 

Confirm, accept value/settings, and return to previous leak search mode 

Cancel, reset to original settings and return to previous leak search mode 

BAL_MGLD3000_20101001_en.doc 49-54



Service - Contact information Menus Warnings / functions 




Probe active 


unlocked 



This menu displays the relevant contact information for sales and service. 


4.4. Shutting off the device 

The device can be shut off in any leak search mode by briefly pressing the power switch on the rear of the 

base unit once. The device will automatically power down in approx. 20 sec. and shut off. 

If the remaining battery charge level falls below 2%, the device will likewise power down and shut off 

automatically. 

The leak search mode that is active before shutdown and all settings will be saved and will be available 

after the unit is restarted. 

In the event that an automatic power down is required, the device can also be switched off manually by 

pressing the power switch for approx. 3 seconds. 

Attention 

While the base unit is on the docking unit and the latter is connected to the mains power, the battery will 

continue to charge after shutdown. 

BAL_MGLD3000_20101001_en.doc 50-54



4.5. Warning and error messages 

Warning and error messages 


Warning symbol blinks 

Probe active 




Yellow background 

Warning/error present 

In case of an error or a warning message, this will be indicated by a yellow 

background and a blinking warning symbol. 

To determine the type of error or warning, press the pictogram! 

The error code (top left), the error number (top right), and the error message 

will then be displayed in the following dialogue. 

If multiple warning- or error messages appear, these can be displayed by 

pressing the arrow keys. 

Press the "OK" button to acknowledge the messages displayed and delete 

them from the error memory. The error dialog will then close. 

When there are no warning- or error messages, the background color will be 

dark blue and the warning symbol will be inactive. 

Close the error dialogue. 

BAL_MGLD3000_20101001_en.doc 51-54



The following error messages can be output: 

Error code Error message Cause / recommendations 

6101 No Probe present No probe was connected to the base unit. 

Switch off the device. Check the connection on the electropneumatic 

connection line on the base unit and on the probe. 

Check the connection line for damage such as kinks or cracks. 

Switch the device back on. 

6201 Probe: Heating Sensor The hand probe is initialized and the sensor is heated. This warning 

message will disappear when the sensor has finished heating 

(approx. 1-2 min.). If the warning message is still displayed after 

2 min., restart the device. 

6202 Probe: Reading Calibration 

Data 

The hand probe is initialized and the calibration data is read. This 

message shows an error while reading the calibration data from 

the probe. To correct the error, restart the device. 

6203 Probe: Writing Calibration 

Data 

Once the test- and calibration procedure is completed, the correction 

factor that is calculated is saved in the probe. The message 

indicates that an error occurred while saving the correction 

factor. To ensure correct transfer of the correction factor, repeat 

the test- and calibration procedure. 

6204 Probe: Reduced Flow The current through the probe is monitored by a current sensor. 

6205 Probe: No Flow A current that is too low, or a complete absence of current, in the 

hand probe can have the following causes: 

• Contamination/clogging of the Teflon tip 

• Damage (cracks, kinks in the connection line) 

• Insufficient connection of the probe to the connection line 

After correcting the root problem, the current is re-established. It 

can take up to 30 sec. to determine the current. 

In case of error the measurement characteristics of the device 

can be reduced. A determination of the gas concentration is still 

possible, although the conversion to leak rates is incorrect. 

BAL_MGLD3000_20101001_en.doc 52-54



6212, 6213, Probe: Sensor 

6216, 6217, Probe: Calibration Data 

6218, 6221, Probe: Identification 

6222, 6223, 

6224 

6300 Base: No Communication 

6301 Base: Reduced Flow 

6302 Base: No Flow 

The device does not turn on. 

These error numbers indicate a defect in the gas sensor system 

or a storage error in the hand probe. If the error occurs again 

after restarting the device, contact technical support. 

There is a problem with the internal device communication between 

the individual components. If the error occurs again after 

restarting the device, contact technical support. 

The current in the base unit is monitored by a current sensor. A 

current that is too low, or a complete absence of current, in the 

main device can have the following causes: 

• Contamination/clogging of the Teflon tip in the hand probe 

• Damage (kinks in the connection line) 

• Closed inline filter in the main device 

After correcting the root problem, the current is re-established. 

The determination of the current can take up to 30 sec. 

In case of error, the measurement characteristics of the device 

can be reduced. A determination of the gas concentration is still 

possible, although the conversion to leak rates is incorrect. 

The battery is dead and the device is not connected to the power 

supply. 

Check for a proper power connection. Check for proper positioning 

on the docking unit. 

BAL_MGLD3000_20101001_en.doc 53-54



5. Care and service 

Please follow the general safety instructions in 2.2 of these operating instructions. 

Interventions in the device, service or repair works can only be performed by the manufacturer's customer 

service department or by authorized professional technicians. 

5.1. Cleaning and care 

Remove the power plugs from the socket before cleaning. 

External cleaning of the MGLD.3000 and its components may only be performed using a soft, 

lightly moistened, non-dripping cloth. Chemical cleaning agents, abrasives, or solvents may not be used. 

The contacts between the docking unit and the base unit, between the device and connection line, 

probe and connection line, and the interfaces with the rear of the device may only be cleaned with a dry, 

dust-free brush. 

During longer periods between use, the device and hand probes must be wrapped in their original packaging 

materials and placed in storage. Especially with probes, the storage area must be absolutely free of 

any impurities and contaminants, and must be specially protected from the influence of chemical substances, 

e.g. silicone. 

5.2. Service 

Before startup, regularly check the electro-pneumatic connection line for kinks, crushing or compression 

damage, cracks and other damage and/or impurities. Replace damaged connection lines immediately to 

ensure proper leak search results and to protect the device from contamination. 

Also regularly check the Teflon tip and the ventilation inlets/outlets on the rear of the device before startup 

for dirt buildup and contamination and remove these. 

Generally a yearly check of the hand probes by the manufacturer's customer service or by manufacturerauthorized 

technicians / an authorized service center is recommended. 

We also recommend yearly replacement of all filters by the manufacturer customer service department or 

by manufacturer-authorized specialists / an authorized service center. 

BAL_MGLD3000_20101001_en.doc 54-54



5.3. Warranty Limitations 

In the following parts of the claim due to technological features or normal wear and tear is restricted: 

Battery 

6 months 

Membrane pump 8000h membrane, 20000h motor 1) 

Gas sensor (Ref./H2-probe) 24 months 2) 

Photoacoust. chamber (CO2-probe) 12 months 3) 

Plugs 

500 connections 

(Basis unit / Docking station) 

Connetctors (hose) 

1000 connections 

Touch panel 24 months 4) 

1) 

2) 

3) 

4) 

approximate values of the manufacturer to pollution-free intake 

) under normal use. Silicon-containing and sulfur-containing media and not desorbing inorganic 

contaminants, for example, tobacco smoke, oils, fats and liquids can be evaporated at the gas sensor 

lead to toxicity, which may lead to a change of Sensitivity and / or selectivity of the sensor lead. 

Possible consequences are a reduced sensitivity, distorted concentration or ad a background 

concentration. For the early detection of changes in sensor behavior for an annual review of the 

handheld probe by an authorized service center is recommended. The service followed the 

manufacturer must be adhered to-ten. 

in normal use. Vibrations that the highly sensitive optical system damage gene can be avoided. 

Contaminated intake air can cause hardware to perform optical components that affect the function of 

the probe. The service followed the manufacturer must be observed. 

If correct operation. Operate only with clean hands, soft gloves or suitable for touch panel pins. can 

mechanical damage (scratches) or contamination from the touch panel damage and lead to 

malfunction or to a restricted operation of the entire unit. The service followed the manufacturer must 

be observed. 

BAL_MGLD3000_20101001_en.doc 55-54

Vulkan Lokring MGLD.3000 Product Manual - Schoonover, Inc.

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