Replacing The Ato Board Or Transformer; Replacing The Ato Pump Or Solenoid; Mib (Manual Interface Board) Service Procedures - Frymaster BIGLA30 Series Service Manual

1.13.3 Replacing the ATO Board or Transformer

Disconnect the fryer from the electrical power
supply. Locate the ATO box (see Figure 1 on page
1-27), behind the JIB (Jug In Box). Remove the cover
to expose the transformers, relay and LON gateway
(if installed) (see Figure 2). Mark and unplug any
wires or harnesses. Once the LON gateway is
removed the ATO board is visible (see Figure 3).
Replace the defective component and reattach all
wires or harnesses.
replaced, CYCLE POWER TO ENTIRE FRYER
SYSTEM. See section 1.14.6 to reset control power.
Check software version and if necessary update the
software. If a software update is necessary, follow
the instructions to update the software in section
1.18.
Press the TEMP button on one of the M3000 computers to verify software version of the ATO. If the version
is not visible, the ATO may not be connected properly.
If the LON board was replaced in a store with a LON network, press and hold the left and right Filter buttons
simultaneously on any controller for 10 seconds. Computer displays TECH MODE. Enter 4557 with
numbered keys. LON WINK will appear on the controller display for four seconds before going away.

1.13.4 Replacing the ATO Pump or Solenoid

Disconnect the fryer from the electrical power
supply. Locate the ATO pump (see Figure 4),
behind the ATO box. Mark and unplug any wires or
harnesses. Press up from the bottom on the quick
disconnects to release the plumbing (see Figure 5).
The plumbing can be pulled from the pump. Loosen
the four nuts attaching the pump to the pump tray.
Replace the defective component and reverse above
steps. Once replaced, reconnect the power.

1.14 MIB (Manual Interface Board) Service Procedures

The MIB (Manual Interface Board) oversees and controls filtration. It receives and sends data over the CAN
(Controller Area Network) to and from various sensors and computers. It activates the filtration cycle, controlling
when actuators should open and close.
The MIB controller is located inside the left cabinet (see Figure 6). In normal operation a cover hides the MIB
controls and only the LED display is visible. The cover is held in place with a T-25 torx screw. In normal
operation, an "A" is displayed for automatic mode. The MIB control board is useful for diagnostic purposes. It
allows manual operation of both the actuators and filter pump without using the M3000 computer
Figure 6: MIB controller cover.
Replace the cover. Once
Mode Display
Vat Selector
Switch
Manual /Auto
Switch
Figure 2
Figure 4
Figure 7
1-28
Figure 3
Figure 5
.
Reset Switch
Drain Switch
Return Switch