6-5
6.4 Troubleshooting the Built-In Filtration System
PROBLEM PROBABLE CAUSES CORRECTIVE ACTION
Pump won’t start.
OR
Pump stops during
filtering.
A. Thermal overload switch has
tripped on an overheated motor.
Test: If the pump stopped
suddenly during the filtering
process, especially if after several
filtering cycles, the pump motor
has probably overheated. Place
the filter handle in the OFF
position, allow the pump to cool
for at least 45 minutes, and then
press the reset button on the
pump motor. Attempt to
activate the pump.
A. If the pump runs normally after
resetting the thermal overload
switch, the pump was
overheated.
Always filter with the cooking
oil/shortening at or near frying
temperature.
Allow the pump motor to cool
off for about 10 minutes after
filtering two full frypots one after
the other.
Check the filter paper after each
frypot is filtered. Replace the
paper if there is a large
accumulation of sediment.
B. Failed filter handle microswitch.
Test: If this is a multi-pot fryer,
attempt to operate the pump
using a different handle. If the
pump starts, the handle
microswitch is out of alignment
or has failed.
When the handle is placed in the
ON position, the lever on the
microswitch should be firmly
pressed against the switch. If so,
the switch has failed. If not, the
switch is loose and/or
misaligned.
B. If the switch is loose, tighten the
screws holding it in place,
ensuring that when the handle is
placed in the ON position, the
lever on the microswitch is
pressed firmly against the switch.
If the switch has failed, call FAS.
C. Pump blockage.
Test: Close the drain valve. Place
the filter handle in the OFF
position, allow the pump to cool
for at least 45 minutes, and then
press the reset button on the
pump motor. Pull the filter pan
from the unit and then activate
the pump. If the pump motor
hums and then stops, the pump
is blocked.
C. Pump blockages are usually
caused by sediment build-up in
the pump due to improperly
sized or installed filter paper and
failure to use the crumb screen.
Call FAS to have blockage
cleared.
Ensure that filter paper is of the
proper size and is installed
properly, and that the crumb
screen is used.
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