Repair & Replacement - Ruffneck AH-12A-A Série Guide D'utilisation

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