GEM KMG Series Installation And Maintenance Manual page 19

12 • OPERATING AT THE RATED HEAT OUTPUT
CHECKING NOMINAL HEAT CAPACITY
M VERSION
- Chamber Burner
Check the depth of the screw "A" in
accordance with table 5 of the "Tecnical gas
data" booklet,using a gauge.
Shift the J3 jumper in TEST position - see
picture
Check that the burner fan speed, corresponds
to the data given in table 5 of the "Technical
gas data" booklet.
Set 180 °C convection cooking at low speed
(where applicable), otherwise at normal speed.
Check the speed at position "IGN", with the J3
jumper in TEST position.
After testing, shift the J3 jumper in the initial
NORM position.
Check the speed on position "MIN".
Set the normal speed and check the speed at
position "MAX".
Conversion: As mentioned above, every appliance is factory set to burn the type of gas specified,
it may become necessary nonetheless to convert the appliance from one type of gas to another.
Therefore, only personnel authorized by the company and belonging to the technical service who
have the corresponding technical handbook can do this work.
A
3
19
90027360rev00
Check the combustion, CO (ppm) and CO
(%) values, with an appropriate instrument:
Start the oven working, 180 °C convection
mode, open the door and activate the micro-
door with a magnet fixed with tape, the oven
restarts and wait for approximately 5 minutes.
Position the flue gas collection probe in the
flue gas outlet pipe (chamber and boiler).
The CO
must be for:
2
Natural gas between 9% and 10.5%
L.P.G. between 9% and 13%
The CO must be no greater than 300 ppm
(measured).
Carry out the test in both convection and
steam mode.
If these readings are outside the ranges,
proceed as stated in the technical manual.
F or the conversion from natural gas to LPG,
or vice versa, proceed as described in the
technical manual.
Reading in:
D-E = Hz (0-200Hz)
D-F = V (0-6 V )
DC DC
- Boiler Burner
Repeat these operations, setting 100 °C steam
cooking.
J3
MAX
MIN
IGN
E F D
2