Appendix A Rti Service Issues - Frymaster BIELA14-T Series Service Manual

BIELA14-T SERIES GEN III LOV™ ELECTRIC FRYERS
Appendix A: RTI (Restaurant Technology Inc.) Service Issues
A.1 RTI FIB Tests
RTI (Restaurant Technology Inc.) provides fresh and waste bulk oil service for McDonald's.
The instructions in this manual for using a bulk oil system for filling and discarding oil are for
an RTI system only. These instructions may NOT be applicable to other bulk oil systems.
The LOV-T™ fryer will ONLY operate with RTI systems that have the new RTI updated three-
pole float switch. If the float switch is the older two-pole switch, call RTI. These float
switches are polarity specific which may short to ground and damage an FIB board.
AC voltage measurements from the Hirschman connector on rear of fryer:
Pin 1 to Pin 2 - 24 VAC.
Pin 1 to Pin 4 - 24 VAC when waste tank is full, 0 VAC when it is not full.
Pin 1 to Pin 3 - 24 VAC when RTI add switch and pump is on, 0 VAC when it is off.
Troubleshooting
All return and drain valves should be closed and pump should be off while the FIB is resetting. If any
of the valves or the pump is on during reset, the FIB board is bad or wires are shorted.
RTI pump is not operating or Oil Reservoir is not filling:
NOTE: DO NOT CHECK PINS WITH HARNESSES UNPLUGGED AS SHORTING THE PINS MAY OCCUR
WHICH WILL DAMAGE THE BOARD.
Normal measurements (FIB C7 12-pin or rear of FIB box (J1 30-pin) connector with everything
connected)
See page A-4 to ensure that no other function is taking priority over adding oil to jug.
1. Reset the power; wait 60 seconds and see if the valve opens.
With the Orange JIB (Oil Reservoir) button pressed:
2. Voltage at FIB board C7 from Pin 5 to Pin 6 (FIB board J1 from Pin 21 to Pin 22) should be 24 VAC;
if not, check connections from RTI 24VAC transformer and check transformer.
3. Voltage at FIB board C7 from Pin 6 to Pin 7 (FIB board J1 from Pin 21 to Pin 23) should be 24 VAC
when filling JIB or vat; if not, the FIB board is bad or wires to pump relay are shorted or both.
4. Voltage at Fresh Add Pump Relay should be 24 VAC; if not, check wiring from FIB board. The relay
is located on top of RTI system.
Waste full signal:
Voltage at FIB board C7 Pin 5 to Pin 8 (FIB board J1 from Pin 22 to Pin 24) should be 24 VAC when
full, 0 VAC when not full; if no voltage level change, the connection from RTI switch or FIB board is
bad.
A–1