Frymaster Gas Rethermalizers FBKR18 Series - Manual (Page 37)

6-4
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
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 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.
Ignitor Wire
Flame Sensor
Wire