Controller Malfunctions; Filtration Malfunctions - Frymaster FilterQuick FQG30 Service Manual

Initiation of the melt cycle with FilterQuick™ controllers is automatic. Problems may originate from the controller
itself, the temperature probe, or a malfunctioning heat relay on the interface board.
FAILURE TO CONTROL AT SETPOINT
Problems in this category may be caused by the temperature probe, the interface board, or the controller.

1.10.4 Controller Malfunctions

RECOVERY TIME
Recovery time – is a method of measuring a fryer's performance. Put simply, it is the time required for the fryer to
increase the oil temperature from 250ºF to 300ºF (121ºC to 149ºC). This range is used as a standard since ambient
kitchen temperatures can affect the test if lower ranges are used.
The FilterQuick™ controller performs the recovery test each time the fryer warms up. An operator can view the
results of the test any time the fryer is above the 300ºF (149ºC) point by pressing the check button once when the
fryer is on. The test results will be displayed in the controller's LED panel in minutes and seconds. The maximum
acceptable recovery time for FilterQuick™ FQG30 Series gas fryers is two minutes and twenty-five seconds .
1.10.5

Filtration Malfunctions

The majority of filtration problems arise from operator error. One of the most common errors is placing the filter
paper/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
paper/pad, including that the correct size is being used. While you are checking the filter paper/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.
A pump seized by debris or hard shortening can usually be freed by manually moving the gears with a screwdriver or
other instrument as illustrated on the following page. Make sure power to the pump motor is off before trying
this.
1. Disconnect power to the filter system.
2. Remove the input plumbing from the pump.
3. Use a screwdriver to manually turn the gears.
FLOW
1-19
PUMP
Sediment
Particle
Up for
reverse
Down for
forward