Replacing The Ato Board, Ato Pump Relay Or Transformer; Replacing The Ato Pump; Replacing The Ato Solenoids - Frymaster OCF30 Service & Parts Manual

1.11.4 Replacing the ATO Board, ATO Pump Relay or Transformer

Disconnect the fryer from the electrical power
supply. Locate the ATO box (see Figure 1 on
page 14), behind the JIB (Jug In Box). Remove
the cover to expose the transformer and ATO
board (see Figure 2).
wires or harnesses.
component and reattach all wires or harnesses.
Replace the cover. Once replaced, reconnect the
power.
CYCLE POWER TO ENTIRE
FRYER SYSTEM. See section 1.11.7 on page
1-19 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 1.13. Remove and restore power to ALL controllers
after power has been restored to the ATO board. Press the TEMP button on one of the M3000
controllers, with the controller in the OFF position, to verify software version of the ATO. If the
version is not visible, the ATO may not be connected properly.

1.11.5 Replacing the ATO Pump

Disconnect the fryer from the electrical power
supply. Locate the ATO pump (see Figure 3),
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 4). The plumbing can be pulled from the
pump. Loosen the four nuts attaching the pump
to the pump tray.
component and reverse above steps.
replaced, reconnect the power.

1.11.6 Replacing the ATO Solenoids

Disconnect the fryer from the electrical power supply. Locate the top off manifold in the rear of the
fryer. The top off manifold is the smaller of the two manifolds. The solenoids are attached to the
manifold (see Figure 5). Mark and unplug any wires. Replace the defective component and reattach
all wires or harnesses. Once replaced, reconnect the power.
Solenoid
Mark and unplug any
Replace the defective
Replace the defective
Once
Figure 3
1-18
Figure 2
Figure 4
Top off
manifold
Figure 5