Troubleshooting Guides - Dean D20 series Service & Parts Manual

Motor and Gear Problems (cont.)
If the lift cycles correctly but fails to remain in the up position, the problem is a failed motor brake.
A failed motor brake cannot be repaired and requires replacement of the motor itself. If power is
reaching the motor but the motor fails to run, the motor is burned out and must be replaced.
Electronic Problems
This category encompasses problems with the relays, microswitches, capacitors, resistors, interface
board, wiring, and controls.
Troubleshooting the electronics of the modular basket lift is simply a process of verifying current
flow through the components up to and including the motor. Using a multimeter set to the 250 VAC
range, check the connections on both sides of the component for the presence of 120 VAC. The
simplified wiring diagrams on the preceding pages identify the components and wiring connection
points.
1.9

Troubleshooting Guides

The following troubleshooting guides are intended to assist service technicians in quickly isolating
the probable causes of equipment malfunctions by following a logical, step-by-step process.
1.9.1 General Troubleshooting
PROBLEM
Burner won' t ignite.
Light in ON/OFF switch
is not illuminated.
ON/OFF switch is on,
but the switch light is not
illuminated.
ON/OFF switch is on and
the switch light is
illuminated, but there is
no output to gas valve.
DECATHLON SERIES GAS FRYERS
CHAPTER 1: SERVICE PROCEDURES
PROBABLE CAUSES
A. ON/OFF switch is off.
A. No voltage at switch.
A. Drain microswitch circuit (filter-
equipped units) is open.
B. Voltage is present at ON/OFF switch,
but continuity of the switch in ON
position is not "0".
C. Continuity of thermostat is not "0"
(cooking oil/shortening temperature is
at least 15°F below electronic/
operating thermostat setting).
D. Gas valve is suspect.
A. Turn ON/OFF switch on.
A. Ensure line voltage is present at the
switch.
A. Ensure drain valve is fully closed and
microswitch is functioning. Replace
microswitch if defective.
B. ON/OFF switch is defective. Replace
switch with a known working switch.
C. Thermostat(s) is/are defective.
Replace defective thermostat with a
known working thermostat.
D. Go to "No burner flame" section.
1-39
CORRECTIVE ACTION