Cleaning The Gas Valve Vent Tube; Checking The Burner Manifold Gas Pressure; Measuring Flame Current; Replacing Components - Frymaster Gas Rethermalizers FBKR18 Series Installation & Operation Manual

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.
6.3

Cleaning the Gas Valve Vent Tube

Refer to Semi-Annual Checks and Services in Chapter 4, Preventive Maintenance.
6.4

Checking the Burner Manifold Gas Pressure

Refer to Semi-Annual Checks and Services in Chapter 4, Preventive Maintenance.
6.5

Measuring Flame Current

When the burner flame is properly adjusted, it will produce a current between 3.5 µA and 6.5 µA.
Flame current is measured by placing a microamp (not milliamp) meter in series with the white
sensing wire on the ignitor. This is accomplished as follows:
1. Turn the unit OFF (press the
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
on and off repeatedly until the temperature in the cookpot reaches 180°F (82°C). When the
water in the unit exceeds that temperature, the burner will stay on until the setpoint is reached.
Check the reading when the burner has been on continuously for at least one minute.
6.6

Replacing Components

6.6.1 Replacing the Computer or Computer Wiring Harness

Refer to Chapter 5, Section 5.3 for this procedure.
button).
Ignitor Wire
button). When a cold unit is first turned on, the burner will cycle
6-4
Flame Sensor
Wire