CHAPTER 13
CARE AND CLEANING OF THE FILTER SYSTEM
13.1 Filtration Problems
One of the most common errors is placing the filter
paper on the bottom of the filter pan rather than on
top of the filter screen.
Whenever the complaint is “the pump is running,
but no oil is returning,” check the installation of the
filter paper, and ensure that the correct size paper is
being used. While you are checking the filter
paper, verify that the o-ring on the bottom of the
filter pan (and on the suction tube if applicable) is
present and in good condition. A missing or worn
o-ring allows the pump to suck air and decrease its
efficiency.
For Filter Magic Systems, if the pump runs, but does not return oil, the most likely causes are that the
filter carriage is not properly positioned all the way to the rear of the fryer or the suction tube o-rings
are missing or worn.
If the pump motor overheats, the thermal overload will trip and the motor will not start until it is
reset. If the pump motor does not start, press the red reset switch located on the end of the motor.
If the pump then starts, something caused the motor to overheat. If the motor runs for a prolonged
period, it may overheat. Allow the motor to cool down for at least 30 minutes and press the reset
button.
The pump may also overheat for one of the following reasons:
• Shortening solidified in the pan or filter lines.
• The operator attempted to filter oil or shortening that was not heated. Cold oil and shortening are
thicker and cause the pump motor to work harder and overheat.
If the pump will not return oil and you hear a humming sound just before the overload trips, the pump
is blocked. Paper which is incorrectly sized or installed will allow food particles and sediment to
pass through the filter pan and into the pump. When sediment enters the pump, the gears may bind
causing the motor to overload, tripping the reset circuit breaker. Solidified shortening in the pump
may also prevent it from turning, with the same result.
The filter screen must go in the bottom of the pan
first. The filter paper goes on top of the screen.
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