Manuel d'utilisation - EMGA

Gas connections
51
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Checking the nominal heating capcity
The heating capacity should be checked by authorised personnel or the responsible organisation, on the basis of the data
provided in this operating manual. This check should be performed for new installations, transformations or adaptations
to other types of gas, and after every maintenance procedure.
The nominal heating capacity and connection pressures can be obtained using the technical data table. Components
sealed with red paint must never be adjusted.
The specified nominal heating capacity is obtained using the nozzles as described in the correpsonding table in the
Technical data booklet, at the connection pressure specified for each type of gas.
If you wish to carry out a further nominal heating capacity check, it can be performed using the volumetric method, by
means of a meter and a timer.
The exact volume which should pass through per time unit can be found in the correspinding table in the Technical data
booklet. This connection value should be maintained in the specified area, with a tolerance of ±5%. If any deviations are
detected, you should make sure that the nozzles fitted have the correct diameter and are being used with the correct inlet
pressure.
Checking the connection pressure
The connection pressure should be measured while the appliance is in operation, using a fluid pressure measuring device
(for example, a "U"-shaped pressure gauge with a resolution of 0.1 mbar or an electronic pressure gauge); make sure the
recorded pressure value matches the value provided in the corresponding table.
To check the inlet pressure, shut off the upstream gas valve and remove the gas supply pipe, inserting a T-fitting between this pipe
and the gas inlet of the oven; connect a suitable pressure gauge to the free terminal on the T-fitting and record the reading.
If the recorded pressure value is much lower than the the value indicated in "CHART A" (more than 0.2 mbar below
the value indicated in the table), contact your local gas supplier.
Caution!
Solenoid valve components which have been adjusted and sealed by the manufacturer should not be tampered with for
any reason.
Operational check
Start the appliance in accordance with the operating instructions.
Make sure the appliance does not leak.
Check the formation, cross-lighting and appearance of the flames through the burner venilation openings; it is particularly
important that the flames are strong and bright blue in colour, with no yellow tips.
User recommendations
The technician responsible for installation must instruct the customer/user on the fundamental safety aspects regarding
oven operation, referring to the information contained in this "Instruction manual" supplied with the oven. Every nonroutine
maintenance procedure (replacing malfunctioning components, adapting to other gases, etc.) must be performed
by a technician with the necessary professional qualifications; once these procedures have been completed, a general
operational check of the oven is required.
For this reason we recommend a maintenance contract is drawn up, stipulating that the appliance is inspected - and the
electrical, gas and plumbing connections thoroughly checked - at least twice a year.
The end user accepts full responsibility for the daily operation and cleaning of the appliance.
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