6
BLOWER AND PLENUM ASSEMBLY
1. Support the Blower and Plenum Assembly while removing the 4 screws from top
hose interface.
2. Unp lug the 3 pin har ness fro m the te mpera ture sen sor to the Front P anel C ontrol.
Some units may have two 3 pin harnesses to be removed. If this is the case, the
sensors must be marked so that they can be reconnected to the same location when
reassemb led. Keep the heat shrin k with the p lugs. This m ust be reinstalle d to
keep harnesses from vibrating free.
3. Unplug the 4 pin harness connecting the Front Panel Control and the Blower and
Plen um A ssem bly.
4. Remove the Green wire from the Blower housing.
5. Remo ve the assem bly from the b ack of the unit.
6. To remove the Blower from the Plenum assembly remove the 3 or 4 nuts holding
the blower to the Plenum.
FRONT PANEL CONTROL AND FACE PLATE
1. Remove the Blower and Plenum assembly as shown above.
2. Remove the 6 #4 nuts from the studs holding the front panel to the chassis using a
1/4 inch nut driver.
3. Disconnect the brown wire from the Time-out control board. Some units may have
connecters in-line with the brown wire. If this is the case disconnect the wire at
the connecters.
4. Disconnect the White and Black wire harness using the in-line connectors.
5. Disconnect the 2 pin Self-test switch harness from the control board.
6. With a SHARP razor knife carefully cut the silicone sealant between the front
panel and the chassis.
7. Lift the Front Panel from the chassis.