Maksan MKF-20G, Installation, Operation And Maintenance Manual, Page: 28 / 33

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7.CONVERSION TO DIFFERENT TYPE
OF GAS
7.1 ACCESS TO COMPONENTS
(See Figs. “7” and “8” following)
7.2 REPLACEMENT OF MAIN BURNER INJECTOR
● To gain Access to the main burner injectors, remove the RH
side panel.
● Slacken screw
“A” and undo injector “C”. (fig. “7”)
● Remove the injector “C” with the one corresponding to the
type of gas supply, as indicated in
Table 2.
● The injector diameter is indicated in hundredths of a
millimetre on the injector body (i.e. a3.5 mm Ø injector is
marked 350).
● Fit the new injector “C” in aerator “B”, remount the assembly
in its original position and tighten down the injector.
7.3 TESTING THE PRIMARY AIR ON THE MAIN
BURNER
(Fig. “8”)
● The primary air flow rate is correct when the flame does not
detach when the burner is cold or backfire when the burner is
hot.
● To adjust the primary air flow rate, proceed as follows:
● Slacken screw “A” and adjust aerator “B” to distance “H” as
shown in Table 2.
● Retighten screw “A”.
7.4 REPLACEMENT OF PILOT BURNER INJECTOR
(Fig. “8”)
● Remove ignition electrode “C”.
● Undo fitting “A” on the pilot line.
● Remove injector “B” and replace with the one corresponding
to the type of gas supply, as indicated in Table 2.
● The injector identification number is stamped on the injector
body.
● Reconnect the pilot line with fitting “A”.
● Remount ignition electrode “C”.
● The gas shut-off valve is not fitted with a minimum
adjustment screw. The operation of the burner is therefore ON
or OFF.
7.5 GAS CONVERSION PLATE
If the appliance is converted to a different gas supply, affix the
correct adhesive tag indicating the new gas type in avisible
location on the outside of the oven. The relevent tag is selected
from those contained in the bag supplied with the appliance.
8. SAFETY DEVICES
The appliance is fitted with the following safety devices:
Protection
fuses (see electrical wiring diagram) mounted
behind the control panel.
To replace, unscrew the cap and replace the blown fuse with
another of the same rating. The correct rating is indicated on
the corresponding fuse plate.
Oven chamber safety thermostat ( manual reset type)
mounted behind the control panel. The safety thermostat shut
off the power supply to the convection heating system. The
thermostat must only be reset by qualified technicans after
first eliminating the cause of the fault.
Thermal cut-out inside fan motor. If the fan motor overheats,
the thermal cut-out trips and blows fuse F1, causing the
appliance to shut down (see electrical wiring diagram).
The thermal cut-out must only be reset by qualified
technicans after first eliminating the cause of the fault and
replacing fuse F1 with another of the same rating. To replace
the fuse, open the control panel, unscrew the cap an replace
the blown fuse with another of the same rating. The correct
rating is indicated on the corresponding fuse plate.
9. OPERATION TEST
- Switch on the appliance following the instructions for use.
- Test the appliance for gas leaks.
- Test the operation of the gas exhaust system.
- Test burner ignition and flame uniformity by removing the
RH side panel (where necessary) and checking the flame
through the corresponding ports.
- Using the instructions manual, explain the operation,
routine maintenance and cleaning instructions to the user.
10. SERVICING
Access to components requiring routine maintenance may be
easily gaind by opening the control panel or removing the LH
side panel and rear panel.
Important: The appliance is factory-set to the gas
type indicated on the adhesive labels affixed to
both the appliance and packaging. To convert the
aplliance to a differenet gas supply, scrupulously
follow the instructions indicated below, and use
the injectors in the bag supplied with the oven.
Attention:
After conversion, refit the oven outer panels.
Important:
-
Exercise due care since certain areas of the
oven exerior get hot during use.
-Do not cover the exhausts on top of the
appliance.