Frymaster BIELA14 1.12RTI Service Issues 1.12.1 RTI MIB Tests, Troubleshooting, Waste full signal

1.12RTI Service Issues

1.12.1 RTI MIB Tests

The LOV™ 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 MIB board.

Normal measurements (MIB J6 8-pin connector with everything connected)

AC voltage measurements:

Pin 1 to Pin 2 - 24 VAC.

Pin 2 to Pin 8 - 24 VAC when waste tank is full, 0 VAC when it is not full.

Pin 2 to Pin 3 - 24 VAC when RTI fill pump is on, 0 VAC when it is off.

Using the RTI test box, PN# 108-0716 allows a quick and easy way to check the 24VAC, the waste full switch and when the RTI pump is operating.

Troubleshooting

All return and drain valves should be closed and pump should be off while the MIB is resetting. If any of the valves or the pump is on during reset, the MIB board is bad or wires are shorted.

RTI pump is not operating or JIB is not filling:

See page 1-26 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 JIB button pressed:

2.Voltage at MIB board from Pin 1 to Pin 2 should be 24 VAC; if not, check connections from RTI 24VAC transformer and check transformer.

3.Voltage at MIB board from Pin 1 to Pin 3 should be 24 VAC when filling JIB or vat; if not, the MIB board is bad or wires to pump relay are shorted or both.

4.Voltage at Add pump relay should be 24 VAC; if not, check wiring from MIB board. The relay is located on top of RTI system.

5.Check voltage at ATO board on J8. Pin 9 to Pin 1 should be 24 VAC with the orange button pressed.

Waste full signal:

Pin 2 to Pin 8 should be 24 VAC when full, 0 VAC when not full; if no voltage level change, the connection from RTI switch or MIB board is bad.

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