Manual

Maintenance
19
Fans When ordering a replacement fan, be sure to specify the model, the
fan part number, ac voltage, and fan position. The fan will be
provided with lugs and leads of the right length for direct attachment
to the terminal block.
+ NOTE: Different fans are used in the 115V and 230V loads. Also,
the fan style depends on its position in the blower; A is in front, B
is in the middle, and C is at the rear, nearest the terminal block.
To replace a fan, follow these instructions:
1. Pull the fan grill out so that its upper flanges come free from the
housing, then pull it down and remove it.
2. On the terminal block, remove the lugs and leads for the defective
fan. All L1 leads go to terminals 5 and 6, and all L2 leads to
terminals 2 and 3.
+ NOTE: It may be necessary to loosen the harness clamps on the
other fans to release the required wires.
3. Remove the four fan mounting screws and remove the fan.
4. Insert the replacement fan in the same position and orientation,
and replace the screws.
5. Connect the leads to the terminal block. All L1 leads go to
terminals 5 and 6, and all L2 leads to terminals 2 and 3.
6. Replace the fan grill.
7. Connect the unit to ac power. Set the switch to MANUAL
momentarily to check that the fans are working properly, then set
it back to AUTOMATIC.
WARNING
Disconnect the unit from all power sources before servicing.
The unit may be energized from multiple sources.
The potential for electric shock exists.