Replacing Fryer Components; Replacing The Computer Or The Computer Wiring Harness - Frymaster BIGLA30 Series Service Manual

2. Disconnect the sensing wire from one of the burner ignitors and connect it to the positive lead of the meter.
Connect the negative lead of the meter to the terminal from which the sensing wire was removed.
Flame Sensor Wire
3. Place the fryer power switch in the ON position to light the burners. After the frypot temperature reaches
200F (93C), wait at least one minute before checking the reading. NOTE: The closer the unit is to
normal operating temperature, the more accurate the reading will be.
1.9

Replacing Fryer Components

1.9.1 Replacing the Computer or the Computer Wiring Harnesses
1. Disconnect the fryer from the electrical power supply.
2. The computer bezel is held in place by tabs at the top and bottom. Slide the metal bezel up to disengage the
lower tabs. Then slide the bezel down to disengage the upper tabs.
3. Remove the two screws from the upper corners of the computer. The computer is hinged at the bottom and
will swing open from the top.
4. Unplug the wiring harnesses from the connectors on the back of the computer marking their position for
reassembly and disconnect the grounding wires from the terminals. Remove the computer by lifting it from
the hinged slots in the control panel frame.
Ground Wire Terminal
Communication Wires
5. Install the replacement computer. Reinstall the control panel assembly by reversing steps 1 thru 4.
6. Setup the computer following the instructions on page 4-9 in the Installation and Operation manual. Setup
MUST be performed prior to readdress.
7. Once setup is complete on all replaced computers, CYCLE POWER TO ENTIRE FRYER SYSTEM. See
section 1.14.6 to reset control power.
8. Check software version and if necessary update the software. If a software update was necessary, follow
the instructions to update the software in section 1.18.
1.9.2 Replacing the Temperature Probe, ATO Probe, AIF Probe, Oil Level Sensor or
High-Limit Thermostat
1. Disconnect the fryer from the electrical supply.
2. Drain cooking oil below the level of the probe or thermostat.
3. Lift up on the bezel to disengage the tabs on its lower edge from the control panel frame.
4. Remove the top two screws in the upper corners of the computer.
5. Swing the computer out from the top and allow it to rest on its hinge tabs.
6. Disconnect the computer wiring harness and ground wire from the back of the computer and remove the
computer by lifting it from the hinge slots in the control panel frame.
7. Disconnect the ignition cables from the ignitors by grasping the boots and gently pulling toward you.
8. Disconnect the flame sensor wires from the flame sensors.
9. Disconnect the sound device lead from the interface board.
1-7
Ground Wire Terminal
20-Pin Connector
Locator Wire