Daikin PreciseLine Series Installation And Maintenance Manual page 114

Figure 123: Fan Shaft Set Screw Locations
7. Remove the four motor mounting bolts using a wrench to
hold the nut on the underside of the motor base.
8. Slide the motor shaft out of the fan hub while supporting
the motor.
Figure 124: Motor Mounting Bolts
To replace with poly phase motor:
1. Place the new motor on the base and insert the shaft into
the fan hub, leaving the set screws loose.
2. Install the motor mounting bolts, washers and nuts
leaving the nuts loose.
3. Adjust the motor on the base and the fan on the shaft so
that the fan is straight and centered in the housing.
4. Tighten the mounting bolts and shaft set screws.
5. Push the sled into the cabinet until it is against the back
stop and the fan housing is tight against the front panel.
6. Reinstall and tighten the five sled screws.
7. Reattach the VFD bracket on the front panel
8. Reconnect the motor wires to the VFD.
IM 1267-7 • PRECISELINE AIR HANDLER
Horizontal Unit Sizes 030 - 050
(Welded Aluminum Airfoil Plenum Fans)
1. Turn the switch disconnect handle to the off position.
NOTE: Single fan model shown.
2. Remove the screws holding the access panel in place.
3. Detach the low-voltage and power wires from the fan
motor by releasing the plastic connectors.
NOTE: Remember the fan motor orientation when installing
a new fan. Matching the motor orientation will ensure
wires can reach the connectors of the new motor.
114
Maintenance
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