Replacing The Interface Board - Frymaster Enodis BIPH52/55 Service Manual

13. Rotate the top of the component box out of the frame and carefully pull it out enough to
disconnect the wiring harness plug from the back of the box. If the unit is equipped with built-in
filtration, disconnect the wires from the filter switch. This will leave one set of wires, enclosed
in spiral wrap, connected to the component box.
14. Remove the box and set it atop the fryer to expose the temperature probe and high-limit
thermostat.
15. Cut the leads of the probe or thermostat, as appropriate, near the component and unscrew it from
the frypot.
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16. Apply Loctite PST56765 pipe thread sealant or equivalent to the replacement part threads and
screw the replacement part into the frypot, torquing to 180 inch-pounds.
17. Unscrew and remove the temperature probe (or high-limit thermostat) from the frypot.
18. Connect the wires from the new component as follows:
a. If replacing the temperature probe, use a pin pusher to disconnect (one at a time) the red and
white leads from the connector and insert the corresponding leads from the new probe.
b. If replacing the high-limit thermostat, use a pin pusher to disconnect the lead running to the
connector and insert the corresponding lead from the new thermostat. Disconnect the other
lead from the drain safety switch and connect the remaining lead from the new thermostat.
19. Reverse steps 1 through 14 to complete the procedure.

1.6.3 Replacing the Interface Board

1. Disconnect the fryer from the electrical power supply.
2. The controller bezel is held in place by tabs at the top and bottom. Slide the bezel up to
disengage the lower tabs. Then slide the bezel down to disengage the upper tabs.
3. Remove the top two screws in the upper corners of the control panel.
4. Hinge the controller down. Allow it to rest on its hinge tabs to access the 15-pin connector on
the back.
5. Disconnect the 15-pin wiring harness from the back of the controller and from the interface
board.
6. Use a 5/16" nut driver (P/N 802-0352) to remove the nut and green ground wire from the back of
the controller.
7. Remove the controller by lifting it up and out from the hinge slots in the control panel frame.
8. Disconnect the wires attached to the interface board, marking or making a note of the wires and
terminals to facilitate reconnection.
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