Technical Service Manual PM2300 Series Liquid Oxygen Reservoir

Technical Service Manual 

PM2300 Series Liquid Oxygen Reservoir

Contents 

Preface............................................................................................................................................2 

Definition of terms.....................................................................................................................2 

Safety information - Warnings and cautions...................................................................2 

1.0 Theory of Operation...........................................................................................................3 

2.0 Warnings and cautions......................................................................................................3 

3.0 Product Specifications.....................................................................................................6 

4.0 Service Tools Equipment Requirements.....................................................................7 

5.0 easymate Reservoir Fill Procedure..............................................................................8 

6.0 Troubleshooting...............................................................................................................12 

7.0 Removal, disassembly, assembly, Installation & replacement Instructions..... 13 

7.1 LOX Level Indicator Panel Removal & Installation for one (1) piece Shroud............................................ 13 

7.2 Battery Replacement................................................................................................................14 

7.3 PC Board Removal & Installation.............................................................................................15 

7.4 Shroud removal & installation..................................................................................................16 

7.1a LOX Level Indicator Panel Removal & Installation for two (2) piece Shroud ........................................19 

7.2a Battery Replacement for two (2) piece shroud......................................................................20 

7.3a PC Board Removal & Installation for two (2) piece shroud...................................................21 

7.4a Shroud removal & installation for two (2) piece shroud ......................................................22 

7.5 Fill Connector removal, disassembly, reassembly & installation......................................................25 

7.6 Pressure Relief Valve removal & installation............................................................................27 

7.7 Warming Coil removal & installation........................................................................................29 

7.8 VTF Valve removal & installation..............................................................................................31 

7.9 Economizer Valve removal, test & installation.........................................................................32 

7.10 Manifold Assembly removal, disassembly, reassembly & installation...................................37 

7.11 Handle Ring removal & installation.........................................................................................48 

8.0 Operation Verification Procedure.......................................................................................... 52 

Economizer Valve Assembly P/N 504985........................................................................................56 

One (1) piece Shroud Assembly......................................................................................................57 

Two (2) piece Shroud Assembly......................................................................................................58 

PM2300 Series Liquid Oxygen Reservoir 


1

Preface 

Customer Service / Tech Support 

Phone 

Phone 

Fax 

Fax 

Web www.XXXXXXXXXXXXX.com 

This manual is intended to guide and help a qualified service technician in the safe handling, service, 

repair and calibration of the EasyMate PM2300 Series Liquid Oxygen Reservoir. A qualified service 

technician should be trained in the safe handling of liquid oxygen and understand its inherent 

dangers. All qualified technicians should have completed the XXXXXXXXXXXXX EasyMate Series 

Liquid Oxygen System Technical Service Training Program. It is recommended that only facilities 

with individuals who have completed this program service the EasyMate Reservoir. 

DO NOT attempt to use or perform any service function on the EasyMate PM2300 

Series Liquid Oxygen Reservoir unless you have read and understand this manual 

as well as the User Manual. 

Prior to servicing (or packaging and shipping the PM2300 Series Liquid Oxygen Reservoir for service) 

all oxygen must be depleted. 

To deplete oxygen from the PM2300 Series Liquid Oxygen Reservoir, attach a flowmeter to the 

oxygen outlet and set to 6 LPM and allow it to flow until the EasyMate Reservoir is completely empty 

as indicated by the cessation of flow and the lack of head pressure. 

Place in a well ventilated area away from sources of ignition when allowing to deplete. 

Definition of terms 

LOX Liquid Oxygen 

GOX Gaseous Oxygen 

NER Normal Evaporation Rate 

VTF Vent-To-Fill 

OVP Operation Verification Procedure 

Safety information - Warnings and cautions 

DANGER 

WARNING 

CAUTION 

Indicates an imminently hazardous situation which, if not avoided, will result in 

death or serious injury. 

Indicates a potentially hazardous situation which, if not avoided, could result in 

death or serious injury. 

Indicates a potentially hazardous situation which, if not avoided, may result in 

minor or moderate injury. 

Symbol indicates the device complies with the requirements of Directive 93/42/EEC 

concerning medical devices and all applicable International Standards. 

(On CE marked Devices ONLY) 



2

1.0 Theory of Operation 

The EasyMate Reservoir is intended to provide supplemental oxygen to the long term oxygen 

patient up to 24 hours per day in an efficient easy to use package utilizing XXXXXXXXXXXXX’s 

unique thermal liquid level sensor system. 

When used in conjunction with the EasyMate PM2200 Liquid Oxygen Portable the EasyMate 

PM2300 Liquid Oxygen Reservoir provides the most efficient, reliable and state of the art 

ambulatory LOX system available. 

While at home, the patient can receive continuous flow oxygen from the EasyMate Reservoir via 

a Flowmeter (P/N 1MFA1863) or a Dial Flowmeter (P/N PM2300FCV) or by filling (as per the user 

manual) their portable LOX unit (EasyMate Portable PM2200 Series) and ambulate in or away 

from their home without having to connect to the EasyMate Reservoir. 

Liquid oxygen stored in the EasyMate Reservoir is typically saturated and boiling at a temperature 

somewhere between about -277°F (-172°C) and -265°F (-165°C). The constant transfer of heat 

from the atmosphere into the EasyMate Reservoir keeps the liquid oxygen boiling and vaporizing 

into gas. If the heat energy transferring into the liquid oxygen is not controlled, vaporization 

occurs too rapidly, and excess oxygen is vented to the atmosphere and wasted. The cryogenic 

container is designed to minimize the transfer of heat from the atmosphere to the liquid oxygen 

contents. This is done by slowing the transfer of heat energy. 

Gaseous oxygen is produced in two ways within the EasyMate Reservoir. First by the normal 

evaporation rate boiling off the LOX and generating head pressure, until relief valve pressure is 

reached, where it vents off to the atmosphere. Secondly, by vaporization within the warming coil 

by allowing LOX to be pushed up the capillary tube and into the warming coil. This is controlled 

by the economizer valve. 

When filling a portable the head pressure pushes the LOX up the withdrawal/fill tube and out the 

fill connector when its VTF Valve is opened. 

When not in use the EasyMate Reservoir will eventually empty by venting off gaseous oxygen to 

the atmosphere continuously at a rate equal to the containers NER value, about 1.35 lbs. per day. 

2.0 Warnings and cautions 

WARNING 

This equipment is not intended for use by patients who would suffer immediate, permanent, 

or serious health consequences as a result of an interruption in the oxygen supply. 

• DO NOT smoke in an area where oxygen is being used or stored. 

• DO NOT disassemble or repair the EasyMate Reservoir, this could create a hazardous condition 

or cause equipment failure. If you have problems, questions, or are unsure if equipment is 

operating properly, call your Liquid Oxygen Supplier. 

• DO NOT use if dirt or contaminants are present on or around fill connectors on the Portable 

or EasyMate Reservoir. 

• DO NOT use oils, greases, lubricants or any combustible materials on or near the EasyMate 

Reservoir. Wash hands properly prior to usage. 

• DO NOT touch liquid oxygen or parts that have been in contact with liquid oxygen. Liquid oxygen 

is extremely cold (-297°F/-183 °C). When touched, liquid oxygen, or parts of the equipment that 

have been carrying liquid oxygen, can freeze skin and body tissue. Fill the EasyMate Reservoir 

with only Medical Grade Liquid Oxygen. (USP applies only in the United States) 



3

WARNING 

• DO NOT point discharging oxygen toward anyone or toward any flammable material. 

• DO NOT attempt to adjust the pressure setting of the pressure relief valve; it has been 

pre-set at the factory. 

Keep equipment in a well-ventilated area at all times. The EasyMate Reservoir periodically 

releases small amounts of oxygen gas that must be ventilated to prevent buildup. 

• DO NOT store liquid oxygen equipment in a closet, car / trunk, or other confined area. 

• DO NOT place blankets, draperies, or other fabrics over equipment. 

TO AVOID INCREASED RISK OF FIRE 

• Keep the EasyMate Reservoir away from electrical appliances. Use and store the EasyMate 

Reservoir at least five feet from electrical appliances that may cause heat or sparks. 

• DO NOT use near any type of flame or flammable/explosive substances. Use and store 

EasyMate Reservoir at least five (5) feet away from equipment such as furnaces, water 

heaters, and stoves that may contain open flames. 

EXTREME COLD HAZARD 

• Extreme cold hazard. Liquid oxygen discharge from the Fill Connector can occur. When 

disconnecting the transfer line, never stand directly over the EasyMate Reservoir Fill Connector. 

If the EasyMate Reservoir Fill Connector stays open and minor liquid oxygen discharge 

occurs, carefully engage and disengage the transfer line to help dislodge any ice or other 

obstruction. If major liquid oxygen discharge (steady stream) occurs, open the VTF Valve (if 

safely possible) to vent pressure and stop the release of liquid oxygen. Open windows and 

doors to ventilate the room and do not walk on areas exposed to liquid oxygen for 60 minutes 

after frost disappears. 

• DO NOT press or move the plastic poppet in the center of the fill connector on the 

EasyMate Reservoir. This will cause a release of liquid oxygen from the fill connector. 

• DO NOT leave the Liquid Oxygen System unattended during the filling operation. 

FIRE HAZARD 

• Fire hazard. Liquid oxygen spilled on asphalt or any other combustible surface will 

increase the possibility of fire if an ignition source is present. ALWAYS fill the unit on a 

noncombustible surface, such as concrete or a steel drip pan. 

• Fire hazard. Liquid oxygen spillage will occur if the EasyMate Reservoir is tipped over. 

Before transporting, secure the EasyMate Reservoir containing liquid oxygen in an upright position. 

• Fire hazard. Oxygen can accumulate in a delivery vehicle. Exhaust vent gases to outside of 

vehicle. 

CAUTION 

• Only individuals instructed and trained in its use should operate this device. 

• This device contains magnetic, ferrous material that may affect the results of an MRI. 

• Only use oxygen safe liquid leak detector to test for leaks. 

• DO NOT autoclave. 

• DO NOT gas sterilize. 

• DO NOT clean with aromatic hydrocarbons. 

• DO NOT immerse device in any kind of liquid. 

• Store device in a clean well ventilated area when not in use. 

• Avoid tipping the EasyMate Reservoir over or placing it in a position where it could be 

knocked over and become damaged. 



4

Safety Facts 

Fire Safety 

The possibility of fire exists when the combination of a fuel, source of ignition, and oxygen is 

present, reference Figure 1. High concentrations of oxygen (air is approximately 21% oxygen) 

greatly enhance the possibility of combustion. 

• Obtain all replacement parts for medical oxygen equipment from the manufacturer. 

• Before servicing, clean all tools that come into contact with the oxygen system. 

• Use only recommended oxygen compatible cleaning and leak detection products. 

• Keep the EasyMate Reservoir upright at all times. Secure liquid oxygen equipment when 

transporting to prevent accidental tip over and spillage. 

• If a liquid oxygen spill occurs indoors, open doors and windows to ventilate the area. Avoid 

sources of ignition and do not walk on or roll equipment over the affected area. 

• Any clothing or porous material that is splashed with liquid oxygen or otherwise absorbs 

high concentrations of oxygen should be removed and aired for at least one hour away from 

any source of ignition. 

OXYGEN SOURCE 

Approximately 16% required 

for combustion. 

Normal air contains 21% oxygen. 

Some fuel materials contain 

sufficient oxygen within their 

make-up to support burning. 

OXYGEN 

FUEL 

HEAT 

IGNITION SOURCE 

Open flame - the sun 

Hot surfaces 

Sparks and arcs 

Friction - chemical action 

Electrical energy 

Compression of gases 

GASES 

Propane 

Butane 

Hydrogen 

Acetylene 

Carbon Monoxide Others 

Natural Gas 

LIQUIDS 

Gasoline Kerosene 

Turpentine Alcohol 

Paint Cod Liver Oil 

Varnish Lacquer 

Lotions Olive Oil 

Creams Others 

SOLIDS 

Coal Plastic 

Wood Sugar 

Paper Grain 

Cloth Hay 

Wax Cork 

Grease Others 

Figure 1, Combustion Triangle 

Explosion Safety 

• Liquid oxygen at atmospheric pressure expands at a ratio of approximately 860:1 (at 0 psig) 

when vaporizing into a gas, reference Figure 2. This can occur very rapidly when exposed to 

the heat in the atmosphere. 

• Ensure that the specified pressure relief devices are present and functioning properly in any 

device that will contain liquid oxygen. This includes transfer hose assemblies. 



Figure 2, LOX Expansion Ratio 

5

3.0 Product Specifications 

Model Series 

Models 

Dimensions, Weights and Capacities 

PM2300 Series Liquid Oxygen Reservoir “EasyMate” 

PM2335-0, PM2335-0CE, PM2345-0, PM2345-0CE 

(With Puritan-Bennett Fill Connector) 

Model PM2335 series, (35 Liter) 

LOX Capacity 

35 liters 

LOX Capacity 

88.1 lbs (40 kg) 

Gaseous equivalent 

30,100 liters 

Maximum Operating Pressure 23 psig (1.59 bar) 

Weight Empty 

44.7 lbs (20.3 kg) 

Weight Full 

132.8 lbs (60.2 kg) 

Shipping weight 

57.5 lbs (26.1 kg) 

Height 30 1 /4” (76.84 cm) 

Diameter 16” (40.6 cm) 

Model PM2345 series, (45 Liter) 

LOX Capacity 

45 liters 

LOX Capacity 

113.3 lbs (51 kg) 

Gaseous equivalent 

38,700 liters 

Maximum Operating Pressure 23 psig (1.59 bar) 

Weight Empty 

50.7 lbs (23 kg) 

Weight Full 164 lbs (74.4 kg) 

Shipping weight 

63.2 lbs (28.7 kg) 

Height 33 5 /8” (86.41 cm) 

Diameter 16” (40.6 cm) 

Operating Conditions 

Operating Temperature Range 0°F to 104°F (-17.7°C to 40°C) 

Storage Temperature Range 

-40°F to 158°F (-40°C to 70°C) 

Humidity 

95% Noncondensing 

Altitude 

uP TO 10,000 ft (3,048 meters) 

System Operating Specifications 

LOX Level Indicator Battery 

LOX Level Indicator 

Outlet Fitting Type 

Oxygen DISS Outlet Connection 

Maximum usable Flow 

NER 

Nominal Operating Pressure 

9 volt (Approx. life, 1 year) 

thermal sensor with LED Display 

oxygen Male DISS with demand check 

Restricted to a maximum flow of 8 lpm ±1 lpm 

directly from outlet fitting. 

6 LPM 

1.5 lbs/day NEW (0.68 kg/day) 

18 – 23 psi (1.24 – 1.59 bar) 



6

4.0 Service Tools Equipment Requirements 

Hand Tools: • #1 Phillips screw driver 

• #2 Phillips screw driver 

• 7/16 socket with 4” extension and ratchet handle 

• 1/2”, 9/16”, 5/8”, 3/4”, 7/8” and 1” combination wrenches 

• 5/32” hex key wrench (Allen) 

• Internal Snap Ring Pliers 

• Wire cutters 

• Dental pick or small Awl 

• 7/8” Flat open end wrench (P/N 504715) 

• VTF Valve Key (P/N 505400) 

• EasyMate Reservoir User Manual (P/N 505129) 

Supplies: • Loctite® 222MS or equivalent low strength thread locking compound 

• Alcohol for cleaning 

• Oxygen safe liquid leak detector 

Test Equipment: • Pressure test assembly (P/N 505646), reference Figure 3 

• LOX EasyMate Reservoir Pressurization Assembly (P/N 505650), 

reference Figure 4 

• Liter Meter kit, 0 – 8 LPM (P/N 505652), reference Figure 5 

• Economizer Valve Test kit (P/N 505651), reference Figure 6 

Figure 3 Figure 4 



Figure 5 figure 6 

7

5.0 easymate Reservoir Fill Procedure 

5.1 Liquid oxygen source requirements 

Refer to all applicable governing standards for the handling, storing, transport and filling of liquid 

oxygen. 

This fill procedure will help in the safe and efficient fill of the EasyMate Reservoir. 

The EasyMate Reservoir must only be filled with Medical Grade Liquid Oxygen. The saturation 

pressure should be a minimum of 23 psig (1.59 bar) to ensure proper operation and prevent 

any delay in use. In order to achieve the saturation pressure of the EasyMate Reservoir, the 

saturation pressure of the LOX fill source must be considered. The fill source saturation pressure 

requirement depends on the type of filling technique used. The most common technique 

“Standard Fill” uses a fill source with a saturation pressure of 40 - 50 psig (2.76 - 3.45 bar). The 

less common technique is the “Fast Fill” that requires a LOX saturation pressure of 20 - 22 psig 

(1.38 - 1.52 bar). In this case, the fill source must have a pressure building system, so that head 

pressure in the fill source can be raised in order to transfer the LOX into the EasyMate Reservoir. 

5.2 Required Equipment 

Liquid Oxygen source 

Liquid oxygen transfer line 

VTF Key (P/N 505400), reference Figure 7. 

Pressure gauge, fill monitoring (P/N 505648) or Pressure test assembly ( P/N 505646) or 

equivalent, reference Figure 8. 

Figure 7 

Figure 8 



8

EasyMate Reservoir Fill Procedure (continued) 

5.3 Pre-Fill Inspection 

Perform the following visual inspection procedure of the EasyMate Reservoir and determine its 

operational status before filling. Correct any problems before filling the EasyMate Reservoir. 

5.3.1 Ask the patient (where applicable) if there are any questions or concerns regarding the 

equipment since the last fill. 

5.3.2 Visually inspect the EasyMate Reservoir for overall product integrity (for example, 

damaged or missing components). 

5.3.3 Verify that all labels are present and legible on the unit, reference Figure 9, for CE Models 9a & 9b. 

5.3.4 Verify that no frost or heavy condensation is present on the container below the shroud and that 

there is no excessive venting from the relief valve. (Some venting from the relief valve is normal.) 

5.3.5 Verify that the liquid oxygen content level is consistent with the delivery schedule and 

expected patient usage. 

NOTE: A flashing bottom light for a half second “ON” and a half second “OFF” for eight (8) 

second duration, indicates the battery needs to be replaced. 

5.3.6 Verify that the fill connector is not worn, leaking, or damaged. 

5.3.7 Verify that the slots on the VTF Valve are not bent or broken. 

5.3.8 Verify that the Condensation Collection Container is in place and empty. 

Fill Connector Label 

Serial Number (SN) Label 

location is on the Container 

opposite the Condensation 

Collection Container 

LOX Level Label 

Oxygen Outlet 

Fitting Label 

Warning & Data Label 

Flowmeter 

Label 

Fill Connector Label 

Figure 9 

LOX Level Label 

Oxygen Outlet 

Fitting Label 

Flowmeter Label 

LOX Label 

CE Label 

Warning & Data 

Label 



Figure 9a 

9 

Figure 9b

5.4 Fill Procedure 



DANGER 

Explosive hazard. Extreme high pressure can rupture a transfer line. Make sure the 

specified pressure relief valve is present, in the proper location, and functioning properly on 

the transfer line assembly. 

WARNING 

• Fire hazard. Liquid oxygen spilled on asphalt or any other combustible surface will 

increase the possibility of fire if an ignition source is present. Always fill the unit on a 

noncombustible surface, such as concrete or a steel drip pan. 

• Explosive hazard. Extreme high pressure can rupture a transfer line. Make sure the 



• Fire hazard. Liquid oxygen spillage will occur if the EasyMate Reservoir is tipped over. Before 

transporting, secure EasyMate Reservoir units containing liquid oxygen in an upright position. 

• Fire hazard. Oxygen can accumulate in a delivery vehicle. Exhaust vent gases to outside of 

vehicle. (See CGA Safety Bulletin SB-9.) 

5.4.1 Wear proper protective clothing during the fill process. 

5.4.2 For the fill method being used, verify the proper saturation pressure of the fill source per 

section 5.1. 

5.4.3 Attach one end of the transfer line source adapter to the liquid withdrawal valve of the 

source tank. Position the source adapter relief valve straight up. 

5.4.4 Attach a 0 – 30 psig (0 – 2.07 bar) fill pressure gauge (P/N 505648 or equivalent) to the EasyMate 

Reservoir Oxygen Outlet Fitting. If the EasyMate Reservoir contains some liquid oxygen, verify that 

the EasyMate Reservoir pressure gauge reads in the range of 19 – 22 psig (1.31 – 1.52 bar). If the 

pressure reading exceeds 25 psig (1.72 bar), service is required DO NOT fill the EasyMate Reservoir. 

5.4.5 Remove the fill connector cover from the fill connector, if present. 

5.4.6 Check the fill connectors on both the EasyMate Reservoir and the fill adapter to ensure 

that they are clean and dry. Wipe the connectors with a clean, lint-free cloth or blow-dry 

with gaseous oxygen or nitrogen as needed. 

5.4.7 Using the VTF Key (P/N 505400), open the VTF Valve on the EasyMate Reservoir by 

rotating the tool a 1/4 counterclockwise. 

NOTE: At this point you may hear a venting noise if the EasyMate Reservoir unit is pressurized. 

5.4.8 Engage the transfer line to the fill connector on the EasyMate Reservoir by aligning the fill 

connector on the transfer line directly over the fill connector on the EasyMate Reservoir. 

Apply downward force. 

5.4.9 Maintain a downward force on the transfer line fill adapter while slowly opening the liquid valve 

on the source tank. At this point a vigorous audible venting noise will confirm that the filling 

process has begun. Adjust the source tank liquid valve as needed to maintain the pressure 

on the gauge at 19 – 21 psig (1.31 – 1.45 bar) during the fill. 

NOTE: It may be necessary to open the source tank liquid valve completely and partially close 

the EasyMate Reservoir VTF Valve to maintain the proper pressure throughout the fill. 

5.4.10 Close and reopen the VTF Valve on the Reservoir after 45 to 60 seconds have passed. This 

will minimize the possibility of the VTF Valve freezing in the open position. 

NOTE: As the level of liquid oxygen nears the top of the Reservoir inner container, the sound 

and appearance of vapors escaping through the VTF Valve will change. The vapor 

will become denser, and as liquid oxygen reaches the VTF Valve, a discharge of liquid 

oxygen will be visible and audible. 

10

WARNING 

Extreme cold hazard. Liquid oxygen discharge from the fill connector can occur. When 

disconnecting the transfer line, never stand directly over the EasyMate Reservoir fill connector. 

If the EasyMate Reservoir fill connector stays open and minor liquid oxygen discharge occurs, 

carefully engage and disengage the transfer line to help dislodge any ice or other obstruction. 

If major liquid oxygen discharge (steady stream) occurs, open the VTF Valve (if safely possible) 

to vent pressure and stop the release of liquid oxygen. Open windows and doors to ventilate the 

room and do not walk on areas exposed to liquid oxygen for 60 minutes after frost disappears. 

5.4.11 When you observe the first steady discharge (greater than 1 second) of liquid oxygen from 

the VTF Valve, close the VTF Valve and disconnect the transfer line from the EasyMate 

Reservoir by lifting the fill adapter straight up. If the transfer line will not disengage close 

the liquid valve on the source tank and allow the transfer line and fill connectors to thaw. 

CAUTION 

If the VTF Valve freezes in the open position, terminate the fill by disconnecting the transfer line 

and then allow the VTF Valve to warm until it closes easily. If the VTF Valve remains open for a 

period of time, the liquid oxygen in the unit will desaturate to a pressure lower than required. 

5.4.12 Close the source tank liquid valve when the frost melts from the transfer line assembly. 

5.4.13 Replace the fill connector cover, if present, on the EasyMate Reservoir. Close the source 

tank liquid valve when the frost melts from the transfer line assembly. 

5.5 Post-Fill Inspection 

Perform the following procedure to inspect the EasyMate Reservoir and determine its operational 

status after filling it with liquid oxygen. Correct observed problems before placing the unit in service. 

5.5.1 Verify that the EasyMate Reservoir fill connector is closed and not leaking. 

5.5.2 Verify that the VTF Valve is completely closed and not leaking. 

5.5.3 Verify that the fill pressure gauge attached to the EasyMate Reservoir Oxygen Outlet Fitting 

reads at least 20 psig (1.38 bar) within five minutes after terminating the fill. 

5.5.4 Verify that there is no frost or heavy condensation on the container below the shroud. 

5.5.5 Verify that all lights are illuminated when the contents indicator button is activated. 

5.5.6 Disconnect the pressure gauge from the EasyMate Reservoir Oxygen Outlet Fitting. 

5.6 Checking Saturation Pressure 

Perform the following procedure as needed to determine the saturation pressure of the liquid 

oxygen in the EasyMate Reservoir unit. 

5.6.1 Attach a 0 – 30 psig (0 – 2.07 bar) fill pressure gauge (P/N 505648 or equivalent) to the 

EasyMate Reservoir Oxygen Outlet Fitting. Note the pressure indicated on the gauge. 

5.6.2 Momentarily open the VTF Valve on the EasyMate Reservoir and observe the pressure 

gauge pointer as it drops. 

5.6.3 Note the pressure value where the gauge pointer drops the lowest and then close the VTF Valve. 

This is the approximate saturation pressure of the EasyMate Reservoir. Saturation pressure readings 

between 18 and 23 psig (1.24 – 1.59 bar) are in the acceptable pressure range. 

DANGER 

Explosive hazard. Extreme high pressure can rupture a transfer line. Make sure the 





11

6.0 Troubleshooting 

Problem Probable Cause Remedy 

1. LOX leaking from fill 

connector. 

2. LOX leaking from engaged fill 

connector. 

3. Unable to disengage transfer 

line or portable from fill 

connector. 

4. Excessively long Portable fill 

time. 

5. Low EasyMate Reservoir 

pressure 

6. High EasyMate Reservoir 

Pressure 

a) Ice crystals preventing poppet 

from closing completely. 

b) Damaged poppet or fill connector 

a) Lip seal on mating fill connector 

is damaged. 

a) Fill connectors are frozen 

together due to moisture. 

a) EasyMate Reservoir is empty. 

b) No head pressure due to major 

leak, defective Pressure Relief 

valve or open VTF Valve. 

a) VTF Valve not completely closed. 

b) EasyMate Reservoir not filled with 

LOX at proper saturation pressure. 

c) Pressure Relief Valve(s) not 

closing at proper pressure. 

d) Leak at a system Fitting (Warming 

Coil, threaded connection etc.). 

e) Economizer Valve stuck in the 

open position. 

a) Pressure relief Valves not opening 

at proper pressure 

7. Low flow at oxygen outlet a) Low pressure at oxygen outlet. 

b) Outlet Fitting Assembly Restrictor 

partially clogged. 

c) Partial obstruction in Capillary 

tube. 

8. No flow at oxygen outlet a) EasyMate Reservoir is empty. 

b) No head pressure due to major 

leak, defective Pressure Relief 

valve or open VTF Valve. 

c) Outlet Fitting Assembly Restrictor 

completely clogged. 

d) Total obstruction in Capillary 

tube. 

9. Liquid level indicator reads 

incorrectly 

a) Battery voltage low. 

b) Battery dead. 

10. High liquid oxygen loss rate a) Loss of container vacuum. 

b) Leak in system connection 

(Warming Coil, threaded 

connection etc.). 

11. Relief Valve(s) venting during 

extended use of oxygen at 

flows above 0.5 LPM 

a) Relief Valve(s) defective 

b) Economizer valve not functioning 

properly 

a) Engage and disengage mating fill 

connector several times to dislodge 

ice crystals. 

b) Open VTF Valve to vent head pressure 

to stop leak. 

a) Replace lip seal 

a) Close liquid valve on source tank and 

allow the fill connector to thaw. 

a) Fill EasyMate Reservoir. 

b) Find leak and repair. 

a) Close VTF Valve completely. 

b) Re-saturate LOX in EasyMate 

Reservoir. 

c) Test and/or replace Pressure Relief 

Valve(s). 

d) Perform leak test. 

e) Test and adjust and/or replace 

Economizer Valve. 

a) Test and/or replace Pressure Relief 

Valves 

a) See symptom 5. 

b) Replace Outlet Fitting Assembly. 

c) Clean and/or replace Capillary Tube 

and Warming Coil. 

a) Fill EasyMate Reservoir. 

b) Find leak and repair. 

c) Replace Outlet Fitting Assembly. 

d) Clean and/or replace Capillary Tube 

and Warming Coil. 

a) Replace battery. 

b) Replace battery. 

a) Perform NER test. 

b) Perform leak test. 

a) Replace relief Valve(s) 

b) Test and adjust or repair economizer 

valve 



12

7.0 Removal, disassembly, assembly, Installation & replacement 

Instructions 

7.1 LOX Level Indicator Panel Removal & Installation for one (1) piece Shroud, reference Figures 10 - 14 

(For two (2) piece shroud, reference page 19.) 

Removal 

7.1.1 Remove retaining screw. 

7.1.2 Pry up LOX Level Indicator Panel at its front edge. 

7.1.3 Lift off LOX Level Indicator Panel enough to access the Ribbon Cable and Grounding Cable, 

if equipped. 

7.1.4 Remove the Ribbon Cable by pulling the lock sleeve on the connector away from the PC 

board, disconnect Ribbon cable. 

7.1.5 Remove the Grounding Cable (if equipped) by pulling its bayonet connector off the 

corresponding terminal. 

Installation 

7.1.6 Connect the Grounding Cable (if equipped) to the PC Board. 

7.1.7 Connect the Ribbon Cable to the PC board with the contacts towards the battery side of 

the PC Board. Slide the locking sleeve towards the PC board to secure. 

NOTE: To insure proper orientation of the Ribbon Cable activate the LOX Level Indicator 

button. The lower LED should blink on and off (indicating empty if EasyMate 

Reservoir is empty) or will display the normal LOX level sequence ending with the 

level of the LOX in the EasyMate Reservoir. If the lower four and upper four LEDs 

flash alternately the Ribbon Cable has been connected upside-down. 

7.1.8 Align the tabs on the top of the LOX Level Indicator Panel with their corresponding slots in 

the Shroud and lower into position. 

7.1.9 Secure with retaining screw. 




13

Removal, disassembly, assembly, Installation & replacement Instructions 

(continued) 


Figure 14 

7.2 Battery Replacement for one (1) piece shroud, reference Figure 15 - 16 

(for two (2) piece shroud reference page 20) 

7.2.1 Remove LOX Level Indicator Panel as per section 7.1. 

7.2.2 Carefully lift bottom of battery away from the PC Board and disconnect from terminals. 

NOTE: Please discard batteries in accordance with local recycling practices. 

7.2.3 Align the new battery with the appropriate terminals and snap in to position. 

CAUTION 

DO NOT install the battery in reverse polarity. This will cause permanent damage to the PC Board. 

7.2.4 Install the LOX Level Indicator Panel as per section 7.1. 



14


(continued) 


7.3 PC Board Removal & Installation for one (1) piece shroud, reference Figure 17 - 18 


Removal 

7.3.1 Remove LOX Level Indicator Panel as per section 7.1. 

7.3.2 Remove Battery as per section 7.2. 

7.3.3 Remove all four (4) PC Board retaining screws and set aside along with the Ground Cable 

Terminal (if equipped). 

7.3.4 Remove the PC Board from the LOX Level Indicator Panel. 

Installation 

7.3.5 Place the PC Board into its position on the LOX Level Indicator Panel and align with 

mounting screw holes. 

7.3.6 Install the retaining screws and the Ground Cable Terminal (if equipped) with the upper left screw. 




15


(continued) 

7.4 Shroud removal & installation, for one (1) piece shroud reference Figures 19 – 27 


Removal 

7.4.1 Remove the LOX Level Indicator as per section 7.1. 

7.4.2 Remove the two (2) Outlet Fitting Retaining Screws. 

7.4.3 Push the Outlet Fitting Assembly inwards to release it from the Shroud. 

7.4.4 Push the Ribbon and Ground Cables into the unit through their access slot in the Shroud. 

7.4.5 Loosen the three (3) Shroud retaining screws. 

NOTE: It is not necessary to completely unscrew and remove the Shroud Retaining Screws 

to remove the Shroud. Loosening them about three (3) turns should be enough to 

remove the Shroud. 

7.4.6 Carefully lift the Shroud up and off the unit. 

Figure 19 



Figure 20 

16


(continued) 


Figure 23 



17


(continued) 

Installation 

7.4.7 Position the Shroud at a 90° angle to its installed position with the Outlet Fitting in line with 

its position on the Shroud. 

7.4.8 Pass the Outlet Fitting through its corresponding port in the Shroud. 

7.4.9 Pass the Ribbon and Ground Cable (if equipped) through their access slot in the Shroud. 

7.4.10 Rotate the Shroud down onto the unit making sure of the alignment of the Shroud Retaining 

Screws and their corresponding slots in the Shroud. 

7.4.11 Tighten Shroud Retaining Screws while applying downward pressure on the Shroud. 

7.4.12 Install the LOX Level Indicator Panel as per section 7.1. 





18


(continued) 

7.1a LOX Level Indicator Panel Removal & Installation for two (2) piece Shroud , reference Figures 10a - 14a 

(For one (1) piece shroud, reference page 13.) 

Removal 

7.1a.1 Remove retaining screw. 

7.1a.2 Pry up LOX Level Indicator Panel at its rear edge. 

7.1a.3 Lift off LOX Level Indicator Panel enough to access the Ribbon Cable. 

7.1a.4 Remove the Ribbon Cable by pulling the lock sleeve on the connector away from the PC 

board, disconnect Ribbon cable. 

Installation 

7.1a.5 Connect the Ribbon Cable to the PC board with the contacts towards the battery side of 

the PC Board. Slide the locking sleeve towards the PC board to secure. 

NOTE: To insure proper orientation of the Ribbon Cable activate the LOX Level Indicator 

button. The lowest LED should blink on and off (indicating empty if EasyMate 

Reservoir is empty) or will display the normal LOX level sequence ending with the 

level of the LOX in the EasyMate Reservoir. If the lower four and upper four LEDs 

flash alternately the Ribbon Cable has been connected upside-down. 

7.1a.6 Align the tabs on the top of the LOX Level Indicator Panel with their corresponding slots in 

the Shroud and lower into position. 

7.1a.7 Secure with retaining screw. 

Figure 10a 

Figure 11a 



19


(continued) 

Figure 12a 

Figure 13a 

Figure 14a 

7.2a Battery Replacement for two (2) piece shroud, reference Figure 15a - 16a 

(for one (1) piece shroud, reference page 14) 

7.2a.1 Remove LOX Level Indicator Panel as per section 7.1a. 

7.2a.2 Carefully lift bottom of battery away from the PC Board and disconnect from terminals. 

NOTE: Please discard batteries in accordance with local recycling practices. 

7.2a.3 Align the new battery with the appropriate terminals and snap in to position. 

CAUTION 

DO NOT install the battery in reverse polarity. This will cause permanent damage to the 

PC Board. 

7.2a.4 Install the LOX Level Indicator Panel as per section 7.1a. 



20


(continued) 

Figure 15a 

Figure 16a 

7.3a PC Board Removal & Installation for two (2) piece shroud, reference Figure 17a - 18a 


Removal 

7.3a.1 Remove LOX Level Indicator Panel as per section 7.1a. 

7.3a.2 Remove Battery as per section 7.2a. 

7.3a.3 Remove all four (4) PC Board retaining screws. 

7.3a.4 Remove the PC Board from the LOX Level Indicator Panel. 

Installation 

7.3a.5 Place the PC Board into its position on the LOX Level Indicator Panel and align with 

mounting screw holes. 

7.3a.6 Install the retaining screws. 

Figure 18a 

Figure 17a 



21


(continued) 

7.4a Shroud removal & installation for two (2) piece shroud , reference Figures 19a – 27a 


Removal 

7.4a.1 Loosen the three (3) Shroud retaining screws. 

NOTE: It is not necessary to completely unscrew and remove the Shroud Retaining 

Screws to remove the Shroud. Loosening them about 3 turns should be enough 

to remove the Shroud. 

7.4a.2 Carefully lift the Shroud up and off the unit. 

7.4a.3 Remove the LOX Level Indicator as per section 7.1a. 

7.4a.4 Remove the two (2) Outlet Fitting Retaining Screws. 

7.4a.5 Remove one (1) Indicator Housing Retaining Screw. 

7.4a.6 Guide the Ribbon cable out of the Indicator Housing through the access slot. 

7.4a.7 Slide Indicator Housing off of Outlet Fitting 

7.4a.8 Loosen and remove compression fitting on the rear of Outlet Fitting. 

7.4a.9 Remove two (2) Housing Bracket Retaining on Indicator screws on Handle Ring and two (2) 

Indicator Housing Bracket Retaining screws on the Manifold. 

7.4a.10 Remove Indicator Housing Bracket. 

Figure 19a 



Figure 20a 

22


(continued) 

Figure 22a 

Figure 21a 

Figure 23a 



23


(continued) 

Installation 

7.4a.11 Install Indicator Housing Bracket, by securing two (2) Indicator Housing Bracket 

Retaining screws at Handle Ring and two (2) Indicator Housing Bracket Retaining screws 

on the Manifold. 

7.4a.12 Connect and tighten compression fitting onto rear of Outlet Fitting. 

7.4a.13 Slide Indicator Housing onto Outlet Fitting. 

7.4a.14 Guide the Ribbon through the access slot in the Indicator Housing. 

7.4a.15 Install and tighten one (1) Indicator Housing Retaining Screw. 

7.4a.16 Install and tighten the two (2) Outlet Fitting Retaining Screws. 

7.4a.17 Install Shroud onto unit insuring of the alignment of the Shroud Retaining Screws and 

their corresponding slots in the Shroud. 

7.4a.18 Tighten Shroud Retaining Screws while applying downward force on the Shroud. 

7.4a.19 Install the LOX Level Indicator Panel as per section 7.1a. 

Figure 24a 

Figure 25a 

Figure 26a 

Figure 27a 



24


(continued) 

7.5 Fill Connector removal, disassembly, reassembly & installation, reference Figures 28 – 33 

Removal 

7.5.1 Remove the Shroud as per section 7.4 for one (1) piece shroud or 7.4a for two (2) piece shroud. 

7.5.2 Using a 7/8” deep socket, hold the Fill Connector Body and use a 1” box wrench on the 

Compression Nut to loosen the nut. 

NOTE: The Fill Connector has been installed with a high torque and will require 

considerable force to remove. 

7.5.3 Unthread the Fill Connector from the Manifold Assembly and remove. 

NOTE: • The Compression Nut and Compression Ferrule should not come off or be 

removed from the Manifold Neck. 

• Whenever the Poppet Assembly is removed, all parts (including Neck, Compression 

Ferrule, Compression Nut, Poppet Assembly, Spacer and Poppet Retaining Snap 

Ring) should be cleaned of debris before reassembly. Debris in the Fill Connector 

may cause it to leak. 

Figure 28 




25


(continued) 

Disassembly 

7.5.4 Using internal snap ring pliers remove the Poppet Retaining Snap Ring. 

7.5.5 Remove the Poppet Spacer and Poppet Assembly. 


Assembly/replacement 

7.5.6 Place Poppet Assembly into the Fill Connector body. 

7.5.7 Place the Poppet Spacer in to the Fill Connector body. 

7.5.8 Using internal snap ring pliers install the Poppet Retaining Snap Ring. 

Figure 33 

Installation 

7.5.9 Thread the Fill Connector on to the Manifold Neck finger tight. 

7.5.10 With a 1” box wrench and a 7/8” socket wrench tighten the Fill Connector Compression 

Nut 1/4 turn past finger tight. 

7.5.11 Install the shroud as per section 7.4 for one (1) piece shroud or 7.4a for two (2) piece shroud. 



26


(continued) 

7.6 Pressure Relief Valve removal & installation, reference Figures 34 – 39 

Removal 


7.6.2 Slide the Retaining Clip of the top of the Economizer Assembly. 

7.6.3 Remove the Retaining Clip Washer from the top of the Economizer Assembly. 

7.6.4 Remove the Pressure Relief Valve Retaining pins by pulling them straight out of the 

Economizer Assembly. 

7.6.5 Remove the Pressure Relief Valves from the Economizer Assembly. 

NOTE: Both Pressure Relief Valves are identical and relieve within the same pressure range. 





27


(continued) 

Installation 

7.6.6 Apply silicone lube to the Pressure Relief Valve sealing O-ring. 

7.6.7 Install the Pressure Relief Valve(s) into the Economizer Assembly. 

7.6.8 Install the Pressure Relief Valve Retaining Pins into the Economizer Assembly. 

7.6.9 Install the Retaining Clip Washer on to the Economizer Assembly. 

7.6.10 Install the Retaining Clip on to the Economizer Assembly. 


Figure 38 

Figure 39 



28


(continued) 

7.7 Warming Coil removal & installation, reference Figures 40 – 45 

Removal 


7.7.2 Holding the Outlet Fitting Assembly with a wrench loosen the Warming Coil Compression 

Nut with a wrench and disconnect. 

7.7.3 Holding the Economizer Valve Outlet Fitting with a wrench loosen the Warming Coil 

Compression Nut with a wrench and disconnect. 

7.7.4 Cut the 4 Cable Ties holding the Warming Coil to the Drip Tray and discard the Cable Ties. 

7.7.5 Carefully pull the Warming Coil away from the Economizer Assembly allowing the Capillary 

tube inside the Warming Coil to slide out and remain connected to the Economizer Assembly. 

Figure 40 

Figure 41 

Figure 40A 




29


(continued) 

Installation 

7.7.6 Carefully feed the capillary Tube into one end of the Warming Coil until the Compression 

Nut engages the fitting on the Economizer Assembly. 

7.7.7 Thread the Compression Nut onto the fitting on the Economizer Assembly finger tight. 

7.7.8 Using a wrench to hold the Economizer Valve Outlet Fitting tighten the warming Coil 

Compression nut with a wrench 1/8 turn past finger tight. 

7.7.9 Connect the Outlet Fitting Assembly to the other end of the Warming Coil. Insure that the 

outlet fitting is only finger tight and oriented correctly. 

7.7.10 Using a wrench on both the Outlet Fitting Assembly and the Compression Nut tighten the 

compression nut 1/8 turn past finger tight. 





30


(continued) 

7.8 VTF Valve removal & installation, reference Figures 46 - 48 & Table 1 

Removal 


7.8.2 Using a wrench to hold the fitting on to the Manifold Assembly and a wrench on the VTF 

Valve assembly, loosen and remove the VTF Valve Assembly. 

Figure 46 

Installation 

7.8.3 Apply three (3) wraps of oxygen safe Teflon Tape to the male threads of the VTF Valve 

Fitting on the Manifold Assembly in a clockwise direction. 

7.8.4 Thread the VTF Valve on to the Manifold Assembly until finger tight. 

7.8.5 Using wrenches on both the Manifold Fitting and the VTF Valve tighten at least one (1) 

complete turn ending with the VTF Valve in it proper orientation. 





31


(continued) 

7.9 Economizer Valve removal, test & installation , reference Figures 49 - 68 

Removal 

7.9.1 Remove the Shroud as per section 7.4 for one (1) piece shroud or 7.4a for two (2) piece shroud.. 

7.9.2 Remove the Warming Coil as per section 7.7. 

7.9.3 Hold the Economizer Valve Assembly with your hand and loosen the Economizer Valve Outlet 

Fitting with a wrench. 

NOTE: Only loosen the Economizer Valve Outlet Fitting, DO NOT REMOVE. 

7.9.4 Using a wrench on both the Economizer Inlet Fitting and its Lock Nut, loosen the Lock nut. 

7.9.5 Holding the Economizer Inlet Fitting with a wrench, unthread the Economizer Valve from its 

inlet fitting. 

7.9.6 Carefully slip the Economizer Valve Assembly off the Capillary tube. 

Figure 49 

Figure 50 




32


(continued) 

7.9 Economizer Valve removal, test & installation (continued) 

Bench Test 

7.9.7 Thread an Economizer Valve Inlet Test Fitting into the inlet of the Economizer Valve finger tight. 

NOTE: The inlet side has the flat area around the Inlet. DO NOT OVER TIGHTEN! The 

Economizer Valve will crack and leak if the fittings are over tightened. 

7.9.8 Insert and secure the Economizer Outlet Test Fitting finger tight in to the Economizers Outlet. 

NOTE: DO NOT OVER TIGHTEN! The Economizer Valve will crack and leak if the fittings 

are over tightened. 

7.9.9 Connect the DISS female fitting of the Pressure Test Assembly to the Economizer Valve 

Inlet Test Fitting. 

7.9.10 Connect a variable air or oxygen source 0 – 25 psi (0 –1.72 bar) to the bottom DISS male 

fitting (with ball valve) of the Pressure Test Assembly. 

7.9.11 Connect a flow indicator (liter meter) to the Economizer Outlet Test Fitting. 

7.9.12 Slowly increase the pressure source to 18 psig (1.24 bar). There should be no flow 

indicated on the liter meter. If so proceed to step 7.9.13. 

7.9.13 If flow is indicated on the liter meter turn the Economizer Valve Adjustment Screw slowly 

clockwise until there is no flow indicated on the liter meter. 

7.9.14 Slowly increase the pressure source to 19 psig (1.31 bar). There should be flow indicated 

on the liter meter. If so proceed to step 7.9.15. 

7.9.15 If there is no flow indicated on the liter meter, decrease the pressure source to below 18 psig 

(1.24 bar). Turn the Economizer Valve Adjustment Screw counter-clockwise 1/2 turn and 

repeat steps 7.9.11 to 7.9.14. 

NOTE: If you can not set the Economizer Valve as per steps 7.9.11 to 7.9.13 replace the 

Economizer valve diaphragm and retest. 

7.9.16 Slowly increase pressure source to 22 – 23 psig (1.52 – 1.59). Flow should still be 

indicated on the liter meter. 

7.9.17 Decrease pressure source to 18 psig (1.24 bar) there should be no flow indicated on the liter 

meter. If flow is indicated on the liter meter go back to step 7.9.12 and reset Economizer Valve. 

7.9.18 When the Economizer Valve has been adjusted to within specification, place a drop of 

Loctite 222MS on the Economizer Valve Adjustment Screw to secure. 

7.9.19 Disconnect the variable pressure source being sure to depressurize first. 

7.9.20 Remove the pressure source and Pressure Test Assembly. 

7.9.21 Remove the Economizer Inlet and Outlet Test Fittings. 




33


(continued) 

Figure 55 

Figure 56 

Figure 57 

Figure 58 

Table 1, Economizer Test Chart 

Inlet Pressure 

Condition 

18 psi (1.24 bar) No Flow from Economizer 

19 psi (1.31 bar) Flow from Economizer 

22 – 23 psi (1.52 – 1.59 bar) Flow from Economizer 



34


(continued) 





35


(continued) 

7.9 Economizer Valve removal, test & installation (continued) 

Installation 

7.9.22 Carefully feed the capillary tube into the Economizer Valve Inlet through the Economizer 

Valve and out the Economizer Valve Outlet Fitting. 

7.9.23 Carefully thread the Economizer Valve assembly onto the Manifold until the fitting bottoms 

in the Economizer Valve body. DO NOT OVER TIGHTEN! The Economizer Valve will crack 

and leak if the fittings are over tightened. 

7.9.24 Turning counter-clockwise, position the Economizer Valve at a 45° angle to the front. 

7.9.25 Thread the Economizer Valve Lock Nut up against the Economizer Valve body finger tight. 

7.9.26 Hold the Economizer Valve with one hand in its position tighten the Economizer Valve 

Lock Nut with a wrench against the Economizer Valve body. 

7.9.27 Connect the Warming Coil as per section 7.7. 


Figure 63 

Figure 64 

Figure 65 

Figure 66 



36


(continued) 


7.10 Manifold Assembly removal, disassembly, reassembly & installation, reference 

Figures 67 - 113 

Removal or removal and disassembly 


7.10.2 Remove the Torque Plate Retaining Screw. 

Skip to steps 7.10.11 & 7.10.12 if you wish to remove the Manifold as an assembly. 


7.10.3 Remove the VTF Valve as per section 7.8. 

7.10.4 Loosen and remove the VTF Valve Inlet Fitting. 

7.10.5 Remove the Economizer Valve Assembly as per section 7.9. 

7.10.6 Loosen and carefully remove the Economizer Valve Inlet Fitting by slipping it off the 

Capillary Tube. 

7.10.7 Remove the Ribbon Cable Access Port Cover. 

7.10.8 Lift and hold Torque Plate out of your way. 

7.10.9 Using a thin 7/8” open end wrench (P/N 504715) loosen and remove the Manifold Neck 

Assembly and Torque Plate. 

7.10.10 Lift and move Torque Plate as needed to loosen and unthread the four (4) Manifold 

Retaining Screws. 

7.10.11 Carefully lift the Manifold Assembly out of the EasyMate Reservoir Container. 

NOTE: Care should be taken so that Sensors on Sensor Board are not damaged while 

extracting Manifold Assembly from Cryogenic Container. 

7.10.12 Cut the four (4) pieces of Stainless Steel wire that secure the Sensor Board to the Sensor 

Board Spacers and the Fill Tube. 

7.10.13 Carefully feed the Ribbon Cable out the bottom of the Manifold Assembly. 

7.10.14 Carefully feed the Capillary Tube out the bottom of the Manifold. 

7.10.15 Remove the (4) Sensor Board Spacers from the Fill Tube. 

7.10.16 Slide the Manifold Spacer and O-ring off the Fill Tube. 

7.10.17 Slide the Manifold Body off the Fill Tube. 

NOTE: Be aware of the Fill Tube Compression Ring located on top of the fill tube flared 

end in the Manifold Body. 



37


(continued) 

Figure 69 

Figure 70 

Figure 71 

Figure 72 




38


(continued) 

Figure 75 

Figure 76 

Figure 78 

Figure 77 



39


(continued) 

Figure 79 

Figure 80 

Figure 81 

Figure 82 

Figure 83 



40


(continued) 

Reassembly and/or installation 

Skip to step 7.10.26 if installing an assembled Manifold assembly 

7.10.18 Slide the Fill Tube into the top of the Manifold and through the O-ring and Manifold 

Spacer Plate. Note the orientation of Spacer Plate and Manifold. 

7.10.19 Feed the Capillary Tube into the Economizer valve port on the Manifold and through the 

O-ring and the Spacer Plate. 

7.10.20 Feed the Ribbon Cable through the Spacer Plate & O-ring then into its port from the 

bottom of the Manifold. 

7.10.21 Insure that the hole in the bottom of the Sensor Board aligns with the hole in the bottom 

of the Fill Tube. 

7.10.22 Attach the four (4) Sensor Board Spacers to the Fill Tube. 

7.10.23 Secure the Sensor Board, Capillary Tube, Fill Tube and Sensor Board Spacers with 3” 

length of .024” Stainless Steel wire. 

NOTE: • Insure that a Sensor Board Spacers are positioned at bottom, middle and top 

of the Sensor Board and one at the top of the Fill Tube about 1 1/4” below the 

Manifold Spacer. 

• At bottom of Fill Tube , ensure stainless steal wire passes through hole in 

Sensor Board, Sensor Board Spacer and Fill Tube. 

7.10.24 Place the Container Flange O-ring onto the Container Flange. 

7.10.25 Carefully slide the Manifold Assembly into the Container. 

7.10.26 Orient the Manifold Assembly so the Ribbon Cable is aligned with the Condensation 

Collection Container. 

7.10.27 Place a drop of Loctite 222MS thread locking compound on the threads of each Manifold 

Retaining Screw. 

7.10.28 Install the Manifold Retaining Screws into the Manifold and secure to 70 in/lbs torque. 

7.10.29 Install the Ribbon Cable Access Port Cover. 

7.10.30 Place the Fill tube Compression Ring Plate side up or to the Fill Tube Plate in the 

Manifold Assembly. 

7.10.31 Install the Manifold Neck Assembly and Torque Plate onto the Manifold Assembly and 

tighten. 

7.10.32 Place a drop of Loctite 222MS thread locking compound on the threads of the Lock Plate 

Retaining Screw. 

7.10.33 Secure the Torque plate with the Torque Plate Lock Screw. 

7.10.34 Apply three (3) wraps of oxygen safe Teflon Tape to the male threads of the inlet side of 

the Economizer Valve Inlet Fitting. 

7.10.35 Carefully feed the Capillary Tube through the Economizer Valve Inlet fitting. 

7.10.36 Thread the Economizer Valve Inlet Fitting into the Manifold and tighten. 

7.10.37 Install the Economizer Valve Assembly as per section 7.9. 

7.10.38 Apply three (3) wraps of oxygen safe Teflon tape to both ends of the VTF Valve Inlet Fitting. 

7.10.39 Thread and tighten one end of the VTF Valve Inlet Fitting into its port on the Manifold 

Assembly. 

7.10.40 Install the VTF Valve as per section 7.8. 




41


(continued) 


Figure 86 



42


(continued) 

Figure 87 

1 1 /4” 

31.8 mm 

9 3 /4” 

247.7 mm 

17 1 /4” 

438.2 mm 

Figure 88 

26 1 /2” 

673.1 mm 



43


(continued) 

Figure 89 

Figure 90 

Figure 91 

Figure 92 




44


(continued) 

Figure 95 

Figure 96 

Figure 97 

Figure 98 

Figure 99 



45


(continued) 

Figure 100 

Figure 101 

Figure 102 

Figure 103 




46


(continued) 

Figure 106 

Figure 107 

Figure 108 

Figure 109 




47


(continued) 


7.11 Handle Ring removal & installation, reference Figures 112 – 121 

Removal 



7.11.3 Remove the Manifold Assembly as per section 7.10. 

7.11.4 Remove the Rubber Drip Skirt by stretching it over the Container’s manifold flange. 

7.11.5 Lift off the Drip Pan. 

7.11.6 Remove the Condensation Collection Container. 

7.11.7 Loosen and remove the Handle Ring retaining Nuts, Washers and the Ground Cable 

(if equipped). 

7.11.8 Lift off the Handle Ring. 




48


(continued) 


Figure 118 

Installation 

7.11.9 Insure that the Wicking Pad is in position around the Containers neck. 

7.11.10 Position the Handle Ring on to the EasyMate Reservoir Canister so the Pump-out Port 

passes through its clearance hole in the Handle Ring. 

7.11.11 Apply one or two drops of Loctite 222MS Thread Locking Compound to the threads of 

the 5 retaining studs on the Container. 

7.11.12 Install the Handle Ring Retaining Washers. 

7.11.13 Position the Container so the Condensation Collection Container slot is towards you. 

7.11.14 Install the Grounding cable, if equipped onto the stud just to the left on the 

Condensation Collection Container Slot. 

7.11.15 Install the Condensation Collection Container as per User manual. 

7.11.16 Install the Drip Pan so its drip hole aligns with the Condensation Collection Container. 

7.11.17 Install the Manifold Assembly as per section 7.10. 

7.11.18 Install the Warming Coil as per section 7.7. 




49


(continued) 

Figure 119 

Figure 120 

Figure 121 

Figure 122 

7.12 Economizer Valve Diaphragm Replacement, reference Figures 121 - 128 

7.12.1 Remove the Economizer Valve Assembly as per section 7.9. 

7.12.2 Slide the Retaining Clip off the top of the Economizer Assembly. 

7.12.3 Remove the Retaining Clip Washer from the top of the Economizer Assembly. 

7.12.4 Remove the Economizer Valve Cap Retaining Screws. 

7.12.5 Remove the Economizer Valve Cap and Diaphragm Spring and Seat. 

7.12.6 Remove and discard the Economizer Valve Diaphragm. 

7.12.7 Install a new Economizer Valve Diaphragm. 

7.12.8 Install the Diaphragm Spring and Economizer Valve Cap. 

7.12.9 Install the Economizer Valve Cap Retaining Screws. DO NOT OVER TIGHTEN! The 

Economizer Valve will crack and leak if the fittings are over tightened. 

7.12.10 Install the Retaining Clip Washer onto the top of the Economizer Assembly. 

7.12.11 Install the Retaining Clip onto the top of the Economizer Assembly. 

7.12.12 Adjust the Economizer Valve as per Section 7.9. 

7.12.13 Install the Economizer Valve Assembly as per section 7.9. 



50


(continued) 

Figure 123 

Figure 124 

Figure 125 

Figure 126 




51


(continued) 

8.0 Operation Verification Procedure (no LOX in EasyMate Reservoir), reference Figures 129 – 132 

8.1 Visual Inspection 

8.1.1 Visually inspect the EasyMate Reservoir for damage or missing components. 

8.1.2 Verify that all labels are present and legible including: 

a) Fill Connector Label 

b) LOX Level Label 

c) Oxygen Outlet Fitting Label 

d) Warning Label & Data 

e) Serial Number Label 

8.1.3 Verify that the Fill Connector in not worn or damaged. 

8.1.4 Using a VTF Valve Key (P/N 505400), open and close the VTF Valve to verify functionality. 

8.1.5 Verify that the Condensation Collection Container is empty and in place. 

8.2 Verify Liquid Level Indicator 

8.2.1 Press the Liquid Level Indicator Button. 

8.2.2 The bottom LED will flash (blink) slowly for 10 second (2 hz per second). This indicates 

that the EasyMate Reservoir is empty. 

8.2.3 If the LED flashes (blinks) rapidly for 8 second (1 hz per second) this indicates a low 

battery condition. Replace the battery as per section 7.2. 

8.2.4 If the top four (4) and the bottom four (4) LEDs flash (blink) alternately this indicates a 

disconnected or improperly connected Ribbon Cable. Reconnect the Ribbon Cable as per 

section 7.1. 

8.3 Pressurize EasyMate Reservoir, leak test 

8.3.1 Connect a variable oxygen pressure source to the LOX EasyMate Reservoir Pressurization 

Fixture (P/N 505650). 

8.3.2 Connect the EasyMate Reservoir Pressurization Fixture to the Fill Connector. 

8.3.3 Increase variable air or oxygen source to 20 psig (1.38 bar). 

8.3.4 Allow the pressure in the EasyMate Reservoir to stabilize for about 2 minutes. 

8.3.5 Listen for any audible leaks. If leaks are suspected, apply oxygen safe liquid leak detector 

to suspected leak area to confirm. 

8.3.6 Remove the EasyMate Reservoir Pressurization Fixture and make note of the time and the 

pressure on Pressure Test Assembly. 

8.3.7 Allow the EasyMate Reservoir to remain undisturbed for 8 hours. 

8.3.8 Check Pressure on the Pressure Test Assembly, there should not be a loss of more then 

1 psig (0.07 bar). If there is a loss of 1 psig (0.07 bar) or greater, retest for leaks with 

oxygen safe liquid leak detector and repair. 

8.4 Verify Oxygen Outlet Fitting flow (8 LPM) 

8.4.1 Connect a oxygen liter meter to the ball valve outlet fitting of the Pressure Test 

Assembly and open valve. 



52

8.0 Operation Verification Procedure (no LOX in EasyMate Reservoir) (continued) 

8.4.2 Connect a variable oxygen pressure source to the EasyMate Reservoir Pressurization 

Fixture, reference Figure 129. 

8.4.3 Increase variable oxygen source to 20 psig (1.38 bar). 

8.4.4 Allow the pressure in the EasyMate Reservoir to stabilize for about 2 minutes. 

8.4.5 Verify that the outlet flow is 8LPM +/- 1 LPM. 

8.4.6 Remove the liter meter from the Pressure Test assembly and close ball valve. 

8.5 Verify Pressure Relief valves 

8.5.1 Slowly increase pressure on the variable oxygen pressure source until both pressure relief 

valves open (crack). 

NOTE: You may apply oxygen safe liquid leak detector to the Pressure Relief Valves to 

help determine when they open. 

8.5.2 The opening (or cracking) pressure of both Pressure Relief Valves should be 21.5 – 24.5 

psig (1.48 – 1.69 bar). 

8.5.3 If either pressure relief Valve fails to open within the specification, it must be replaced as 

per section 7.6. 

8.5.4 Slowly decrease the variable oxygen pressure source until both Pressure Relief Valves 

have just closed (reset). 

8.5.5 Both Pressure relief valves should have closed (reset) at or above 21 psig (1.45 bar). 

8.5.6 If either Pressure Relief Valve fails to close (reset) within specification it must be replaced 

as per section 7.6. 

Figure 129 



53


8.6 NER Test 

8.6.1 Fill the EasyMate Reservoir as per Fill Procedure in section 5.0 to at least 1/3 full. 

8.6.2 Allow the EasyMate Reservoir to remain undisturbed for approximately 24 hours. 

8.6.3 Carefully place the EasyMate Reservoir on a calibrated weight scale and record weight 

and time. 

8.6.4 Remove from scale and allow the EasyMate Reservoir to remain undisturbed for 

approximately 24 hours. 

8.6.5 Carefully place the EasyMate Reservoir on a calibrated weight scale and record weight 

and time. 

8.6.6 Calculate the NER with the following formula: 

Weight change (lbs.) 

Elapsed Time (hours) 

8.6.7 Confirm that the NER is .0625 lbs. per hour (1.5 lbs. per day) or less. If the NER is higher 

then specification repeat steps 8.7.1 to 8.7.6. If the NER still exceeds specification retest 

for leaks. If no leaks are found container may require repair. An NER value exceeding 

1.5 lbs/day does not necessarily constitute a loss of vacuum. 

Figure 130 



54


8.7 Verify Liquid Level (reference User manual) 

8.7.1 Press the Liquid Level Indicator Activation Button. 

8.7.2 The Liquid Level Indicator LED lights should illuminate in sequence from bottom to top. 

8.7.3 Then the corresponding amount of LEDs will illuminate to the level of LOX in the EasyMate 

Reservoir. The LED will then all turn off (time out) in 5 seconds. 

Figure 131 

Figure 132 



55

ITEM 

NO. 

PART NO. / DESCRIPTION QTY. 

1 504993 - VALVE ASSY, PRIMARY RELIEF ECONOMIZER 2 

2 504986 - MANIFOLD, ECONOMIZER 1 

3 504988 - CAP, MANIFOLD, ECONOMIZER 1 

4 504989 - SCREW, ADJUSTMENT, ECONOMIZER 1 

5 504991 - CAP, SPRING SEAT, ECONOMIZER 1 

6 505104 - SPRING 1 

7 505111 - FITTING, INLET 1 

8 504987 - FITTING, OUTLET, ECONOMIZER 1 

9 504992 - DIAPHRAGM, ECONOMIZER 1 

10 505029 - O-RING #6 1 

11 505638 - O-RING, 9MM x 2MM 1 

12 505211 - WASHER, FLAT 1 

13 505212 - PIN, DOWEL 2 

14 505213 - CLIP, HAIRPIN 1 

15 505334 - GUIDE, INSERT, CAPILARY TUBE 1 

16 505333 - NUT, HEX, LOCK 1 

17 505572 - O-RING, #111, SILICONE 1 

18 503935 - SCREW 2 

18 

15 

9 

6 

5 

1 

11 

16 

2 

10 

4 

3 

14 

12 

13 

17 

1 

8 



Economizer Valve Assembly P/N 504985 

56

One (1) piece Shroud Assembly 

57

Two (2) piece Shroud Assembly 

58

505618 Rev3 (E) 02/10/09 Printed in USA

Technical Service Manual PM2300 Series Liquid Oxygen Reservoir

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