CCI Thermal Technologies AV - Advanced Vertical Unit Heater - Manuel (Page 8)

8
REPAIR & REPLACEMENT
W A R N I N G
Heater should only be serviced by qualified
personnel with heating equipment experience.
Disconnect heater from power supply before
repairing heater. Lock the switch in the
off (open) position and/or tag the switch to
prevent unexpected power application.
Heater surfaces may be hot.
1. After repairing any component:
a. Check that electrical connections are correct and
secure.
b. Remove any foreign material from enclosures,
c. Install and secure all covers.
d. Ensure that all fasteners are tight.
e. Remove all foreign objects from heater.
f. Ensure air exits through louvers and fan rotates
counterclockwise when viewed from rear of heater
(see Figure 9).
MOTOR, FAN, AND
FAN GUARD
1. Remove bolts holding motor to the motor mount.
2. Remove the two piece fan guard assembly (see Figure 10).
3. Lift the motor assembly off the motor mount.
4. Before removing the fan, measure and record the location of
the fan hub on the motor shaft (see Figure 11). If fan is difficult
to remove, use a gear puller on the fan hub.
5. To reassemble, position fan on motor shaft and tighten set
screws.
6. Place motor assembly onto motor mount and fasten the fan
guard to cabinet.
7. Center fan in shroud opening. Leave approximately 1/16” to
3/16” (1.6 to 4.8 mm) gap between the motor and fan guard.
(see Figure 8).
8. Bolt motor to motor mount. Manually spin the fan blade to
ensure it rotates freely before applying power.
9. Air must exit through louvers and fan must rotate
counterclockwise when viewing from the rear of the heater
(see Figure 9).
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FIGURE 9
FIGURE 10
FIGURE 11
FIGURE 8 FIGURE 12
1/16” to 3/16”
(1.6 to 4.8 mm)
Support
back of
heater
Fan
rotation
Air
intake
Core
Bolts
Motor -
mount
Bolts
REPAIR & REPLACEMENT
WARNING
Heater should only be serviced by qualified
personnel with heating equipment experience.
Disconnect heater from power supply before
repairing heater. Lock the switch in the
off (open) position and/or tag the switch to
prevent unexpected power application.
Heater surfaces may be hot.
1. After repairing any component:
a. Check that electrical connections are correct and secure.
b. Remove any foreign material from enclosures,
c. Install and secure all covers.
d. Ensure that all fasteners are tight.
e. Remove all foreign objects from heater.
f. Ensure air exits through louvers and fan rotates
counterclockwise when viewed from rear of heater (see
Figure 9).
MOTOR, FAN, AND FAN GUARD
1. Remove bolts holding motor to the motor mount.
2. Remove the two piece fan guard assembly (see Figure 10).
3. Lift the motor assembly off the motor mount.
4. Before removing the fan, measure and record the location of the
fan hub on the motor shaft (see Figure 11). If fan is difficult to
remove, use a gear puller on the fan hub.
5. To reassemble, position fan on motor shaft and tighten set
screws.
6. Place motor assembly onto motor mount and fasten the fan
guard to cabinet.
7. Center fan in shroud opening. Leave approximately 1/16” to
3/16” (1.6 to 4.8 mm) gap between the motor and fan guard.
(see Figure 8).
8. Bolt motor to motor mount. Manually spin the fan blade to
ensure it rotates freely before applying power.
9. Air must exit through louvers and fan must rotate
counterclockwise when viewing from the rear of the heater (see
Figure 9).