1-8
Motor overload can be caused by:
•
Solidified shortening in the pan or filter lines,
or
•
Attempting to filter unheated oil.
Cold oil is more viscous, causing the pump motor to trip a breaker. Always filter with the oil at
operating temperature [~350°F (177°C)].
If the motor runs but the pump does not, there is a blockage in the pump or lines. Incorrectly sized
or installed paper/pads will allow food particles and sediment to pass through the filter pan and into
the pump. When sediment enters the pump, the gears bind, causing the motor to overload, again
tripping the breaker. Shortening that has solidified in the pump will produce the same result.
A pump seized by debris or hard shortening must be disassembled, cleaned, and reassembled. Use
the following procedure:
1.
Disconnect power to the filter system.
2.
Remove the front cover of the pump to access the gears inside (see illustration below- 8-GPM
pump shown), if the pump is accessible inside the cabinet.
Remove bolts to remove
pump cover.
Remove debris or hardened
shortening to free gears.
3.
If the front cover is not accessible, the pump must be removed from the pump motor (remove
input/output plumbing from the pump prior to removing pump). Remove three setscrews from
the pump-shaft housing to disengage the pump from the motor. Remove the gears and
thoroughly clean all internal components. Ensure the inside of the pump housing is free of any
debris or hardened shortening before reassembling.
Failure to completely clean the inside
housing and ring gear will cause gear binding after reassembly.
Filter paper/pads that are the wrong size or installed incorrectly will also allow food particles and
sediment to pass through and clog the suction tube in the bottom of the filter pan. Particles large
enough to block the suction tube may indicate that the crumb tray is not being used.