Manual Part No: 931762-01
MV1 Gas Steamer
- 16 –
Manual Rev No: 2
SERVICE AND MAINTENANCE
Maintenance
MUST
only be carried out by a competent person. Ensure that the gas and electricity
supply to the appliance has been turned “
OFF
” before dismantling any components.
1)
Turn the steamer on and check that the gas pressure at the test point is as stated on the date
plate.
2)
Remove the oven shelves and the lower panel covering the top of the steam generator tank, and
check the water level against the level indicator at the back of the tank. If level is incorrect,
remove the front control panel and adjust the float to re-set the water to the correct level.
3)
Drain an amount of water from the generator tank and check that the water re-fills to the correct
level, checking that the water flow is unobstructed between the header tank and the steam
generator tank.
NOTE! It is possible to remove the end cap from the pipework to enable the connecting water
pipe to be cleared of any blockage. De-scale the tank as required.
4)
Remove the two screws fixing the control panel, and check that the float switch operation is
satisfactory by depressing the float below the water level, noting that the main burner goes out
and then re-lights as the float switch is released. Also check that the cross lighting between pilot
and burner is smooth and positive.
Any scale build up on the float switch or float valve must be removed.
5)
Replace oven shelves, generator tank top cover and control panel.
6)
Remove the four screws securing lower heat shield, followed by three screws securing the upper
heat shield in the bottom compartment of the steamer.
7)
Check that the pilot flame is satisfactory and that the flame is impinging correctly on the
thermocouple and thermopile probes.
8)
Brush clean the main burner and clear the burner ports of any lint build up as required.
9)
Re-fit the heat shield in lower compartment.
10)
Insert a thermometer probe into the steam outlet vent in the top panel of the steamer.
11)
Turn the steamer on and observe the temperature rise on the thermometer. The thermostat
should cut off 97
°
C to 98
°
C. Adjust the thermostat as required.
12)
The thermostat should cut back in at approximately 88
°
C.
13)
Check the condition of the door seals
