17
Service Manual for
AHPO / EPO Proofer Oven
the unit and follow lockout / tagout procedures.
There are two Oven Heat Elements, one on each side of oven.
The Elements are behind the Oven Ceiling Panel.
1. Remove the Oven Ceiling Cover; refer to the COVERS
AND PANELS section of this manual for specific
instructions.
2. Insert screwdriver blade here
and ease panel out if needed.
1. Remove screws
Figure 30. Oven Ceiling Panel Removal
Use care when removing the Oven Ceiling Panel
to prevent damage to the fan blades.
2. Remove four screws, two at each end of the suspect
Element. Retain the screws for reuse.
Oven Heats Elements
Figure 31. Oven with
Oven Ceiling Panel Removed
3. Remove the wire form supports.
4. Drop the Element away from the top wall, being careful
not to damage the wire connected to each end of the
Element.
Pull enough wire though holes so as to not
have it pull back into hole when it is removed, as that will
likely require you to remove a top panel in order to retrieve
the wire.
5. Tag and disconnect the Element wires.
6. Using an Ohmmeter, check the Element for continuity.
7. Repeat these steps on the remaining Element if needed.
8. Reverse these steps to install a new Element.
Tighten the Heat Element connection to 30
inch pounds torque.
If there is high-temperature silicone caulking
around the Heat Element ends where they pass though the
top wall, this caulking may be damaged when removing
a Heat Element and should be replaced as needed during
reassembly.
OVEN CIRCULATION FAN
Disconnect the electrical power to
the unit and follow lockout / tagout procedures.
The Oven Circulation Fan is located on the top of unit.
Removing the Oven Circulation
Fan requires the use of a ladder. Use ladder safety
protocols while working on this area of the unit.
1. Remove the Oven Fan Cage and Wire Harness Cover on
the top of the unit. Refer to the COVERS AND PANELS
section of this manual for specific instructions.
2. Remove the Oven Ceiling Panel; refer to the COVERS
AND PANELS section of this manual for specific
instructions.
3. Tag and disconnect the wires to the fan motor.
4. Using an Ohmmeter test the motor for short circuits or
open conditions. If motor fails these tests, it must be
replaced.
5. Remove the bolt that secures the Oven Fan Wheel to
the Oven Fan Motor. Retain the bolt for reuse.
6. Remove the Oven Fan Wheel.
Mounting
Bolt
Figure 32. Oven Fan Wheel Mounting Bolt.
