the upper water level sensor causes the water relay (K2) to open. This cuts power to the water sole- noid valve, which closes, cutting off water flow into the cookpot.
6.2Accessing the Rethermalizer for Servicing
DANGER
Moving a rethermalizer filled with hot water may cause spilling or splattering of the hot water. Always drain the cookpot before attempting to relocate the unit for servic- ing.
1.Shut off the gas supply to the unit. Unplug the electrical power cord. Disconnect the unit from the gas supply.
2.Remove any attached restraining devices.
3.Relocate the rethermalizer for service accessibility.
4.After servicing is complete, reconnect the unit to the gas supply, reattach restraining devices, and plug in the electrical power cord.
6.3Cleaning the Gas Valve Vent Tube
Refer to
6.4Checking the Burner Manifold Gas Pressure
Refer to
6.5Measuring Flame Current
When the burner flame is properly adjusted, it will produce a current between 3.5 ∝A and 6.5 ∝A. Flame current is measured by placing a microamp (not milliamp) meter in series with the white sens- ing wire on the ignitor. This is accomplished as follows:
1.Turn the unit OFF (press the 
button).
2.Disconnect the white flame sensor wire from one of the burner ignitor assemblies and connect it to the positive lead of the meter. Connect the negative lead of the meter to the terminal from which the sensing wire was removed.
3.Turn the unit ON (press the 
button). When a cold unit is first turned on, the burner will cycle on and off repeatedly until the temperature in the cookpot reaches 180°F (82°C). When the water in
Ignitor Wire
Flame Sensor
Wire