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COMMON COMPUTER COMPLAINTS
Most problems concerning computers have to do with programming them. There are two common
complaints:
1. Fryer constantly displays “HI.”
Cause: Setpoint is incorrect or missing.
Corrective Action: Check setpoint and refer to the M2000 computer manual for instructions to
adjust the setpoint.
2. Temperature is displayed in Celsius.
Cause: Computer is programmed to display in Celsius.
Corrective Action: Turn the computer off then press 1658.
1.7.5 Filtration Malfunctions
The majority of filtration problems arise from operator error. One of the most common errors is
placing the filter pad on the bottom of the filter pan rather than over the filter screen.
Whenever the complaint is “the pump is running, but no oil is being filtered,” check the installation
of the filter pad, including that the correct size is being used. While you are checking the filter pad,
verify that the O-rings on the filter pan suction tube are present and in good condition. Missing or
worn O-rings will allow the pump to suck air and decrease its efficiency.
If the pump motor overheats, its 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 front of the motor.
If the pump then starts, something caused the motor to overheat. It may be just that several frypots
in a large battery of fryers were being filtered one after the other and the pump became hot. Letting
the pump cool down for at least a half-hour is all that is required in this case. More often, the pump
overheated for one of the following reasons:
• Shortening that remained in the pan after previous filtering solidified in the suction tube
recess in the bottom of the pan or the suction tube, itself. Adding hot oil to the pan and
waiting a few minutes will usually correct this problem. A flexible wire can be used to clean
out the suction tube and the recess in the bottom of the pan. NEVER use compressed air to
blow solidified shortening out of the suction tube!
• The operator attempted to filter oil that was not heated. Cold oil is thicker and causes the
pump motor to work harder and overheat.
If the motor hums but the pump does not rotate, there is a blockage in the pump. Incorrectly sized or
installed paper will allow food particles and sediment to pass through the filter pan and into the
pump. When sediment enters the pump, the gears can bind up and cause the motor to overload,
tripping the thermal overload. Solidified shortening in the pump will also cause it to seize, with
similar results.