Replacing The Filter Motor Or Filter Pump; Ato (Automatic Top-Off) And Filtration Malfunctions And Service Procedures - Frymaster BIELA14-T Series Service Manual

1.10.7 Replacing the Filter Motor or Filter Pump

1.
Disconnect the fryer from the electrical power supply and reposition it to gain access to both the front and rear.
2.
Remove the filter pan and lid from the unit.
3.
Remove the lower back panel.
4.
Disconnect the flexline running to the oil-return manifold at the rear of the fryer as well as the pump suction flexline at
the end of the filter pan connection.
5.
Remove the cover plate from the front of the motor and disconnect the motor wires.
6.
Remove the nuts and bolts which secure the filter pump motor bridge to the rear vertical brace.
7.
Remove the screws that secure the bridge to the lower rear brace.
8.
Remove the nut which secures the front of the bridge to the brace.
9.
Get a good grip on the bridge, carefully pull it forward off the rear brace and lower the entire assembly to the floor.
Once on the floor, pull the assembly out the front of the fryer.
10.
When required service has been completed, reverse steps 2-9 to reinstall the bridge.
11.
Reconnect the unit to the electrical power supply, and verify that the pump is functioning correctly using the functions
in the filter menu (i.e., using the fill vat from pan function when engaged, the motor should start and there should be
strong suction at the intake fitting and outflow at the rear flush port.)
12.
When proper operation has been verified, reinstall the back panels and the filter pan and lid.
13.
Reposition the fryer under the exhaust hood to return the fryer to service.

1.11 ATO (Automatic Top-off) and Filtration Malfunctions and Service Procedures

The automatic top-off system is activated when the oil level falls below the top sensor in the front of the frypot. The signal
is sent to the FIB (Filter Interface Board) which sends a signal to the VIB (Valve Interface Board) to engage the return
actuator to the frypot and turn on the ATO pump. The pump draws oil from the JIB (Jug In Box) through the rear return
manifold into the rear of the frypot. Once the oil level has satisfied the sensor, the pump turns off and the actuator closes.
The FIB (Filter Interface Board) also oversees and controls filtration and bulk oil functions. It
receives and sends data over the CAN (Controller Area Network) to and from various
sensors, boards and controllers. It activates the filtration cycle sending information to the
VIB (Valve Interface Board) boards controlling when actuators should open and close.
The FIB board is located inside the box, behind the oil reservoir (see Figure 17). The power
for the FIB board, the filter pump relay, and top off pump are supplied from the 24VDC
power supply in the FIB box. The 24VDC power supply also provides power, which passes
through the FIB board to the VIB board, to the rotary actuators. The power for the VIB
board microprocessor is supplied from the SIB.
The 24VAC transformer in the left component box powers the fresh oil solenoid for bulk oil.
1.11.1 Auto Top Off Troubleshooting
Problem
Fryer tops off cold.
No power to FIB board
Incorrect vat tops off.
Probable Causes
Incorrect setpoint.
A. J1 connection unplugged.
B. Power supply malfunction.
A. Wired incorrectly.
B. Flex lines connected to wrong
vat.
Corrective Action
Ensure setpoint is correct.
A. Check to ensure J1 on front of FIB board is fully
locked into connector.
B. Check that proper voltage is present at the power
supply. See table in section 1.11.4.
A. Check wiring. Ensure the ATO probes are connected
to correct vat and harness positions.
B. Ensure the correct flex lines are connected to correct
vat.
1-23
Figure 17