Service manual
Service Manual for Flexible Batch Broiler Units
30
WARNING
DISCONNECT THE ELECTRICAL POWER
TO THE BROILER AND FOLLOW
LOCKOUT / TAGOUT PROCEDURES.
1. Make sure the broiler is off and unplugged.
2. Remove the Lower Control Side Service Panel.
Refer to the COVERS and PANELS section of the
manual.
3. Remove the Blower Motor Assembly.
4. Check and clean the Blower Wheel as needed.
5. Check that the wheel turns freely.
6. Measure the resistance of the Blower Motor winding.
The normal resistance across the Blower Motor winding
should be 22.2Ω ± 2.2Ω.
NOTE: If the resistance is low, the winding may be
shorted. If the resistance is high the winding is open.
If the Blower Motor tests OK, the problem is probably
with the Blower Motor Relay.
TESTING THE RELAYS
There are two 24VDC Solid-State Relays in the broiler.
One controls the Blower Motor, while the other controls
the Conveyor Drive Motor.
1. Remove the Lower Control Side Service Panel.
Refer to the COVERS and PANELS section of the
manual.
2. Turn on the Main Power Switch.
3. The Blower Motor only runs when there is a call
for ignition of the upper Infrared Burners. The
Conveyor Drive Motor only runs for 6 seconds at
the end of a cook cycle. To test the relay, check for
24VDC on the input of the relay. At the same time,
monitor AC current to either the Blower Motor or
the Conveyor Drive Motor. When no relay input
voltage is present, there will be no amperage draw
on the output of the relay.
4. Using an Ohmmeter, check for continuity across
output terminals. If Ohmmeter indicates continuity,
Relay is OK. If Ohmmeter indicates no continuity,
Relay is faulty.
NORMAL MOTOR RESISTANCE (120V, 60 HZ)
Wires to Test Resistance
Black and Brown 24.2 Ω
Black and Orange 24.2 Ω
Brown and Orange3 49.2 Ω
CHECKING CONVEYOR DRIVE MOTOR
CAPACITOR
If the motor tests OK, check the Capacitor. The
Capacitor is located in the service area on the control
side of the broiler.
WARNING
DISCONNECT THE ELECTRICAL POWER
TO THE BROILER AND FOLLOW
LOCKOUT / TAGOUT PROCEDURES.
1. Remove the Lower Control Side Service Panel.
Refer to the COVERS and PANELS section of
the manual.
2. Disconnect the wires connected to the Capacitor.
3. Discharge the Capacitor by shorting both terminals
to ground at the same time.
4. Use an Ohmmeter to test the Capacitor.
NOTE: If both the Drive Motor and Capacitor test
OK, the problem is probably with the Drive Motor
Relay.
CHECKING AND TESTING THE BLOWER
MOTOR
The Blower Motor provides air to the Upper Infrared
Burners. These burners will not function properly if
the Blower Motor is not supplying a sufcient amount
of air to them. The rst thing to check is the Blower
Wheel for grease and debris build up. Also, inspect for
a loose or damaged Blower Hose.