Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | [email protected] | www.krueger-hvac.com
Installation, Operation, & Maintenance for CRFF-E Series
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Removal and Installation of the Motor (CRFF-E and CRFF-E-ARS Models)
Disconnect the unit from the electrical power source before attempting any service.
Electrical service should be performed by licensed electricians or authorized KRUEGER
service technicians.
Tools Required:
Phillips Head Driver, Battery Operated Drill, (2) 8" adjustable wrenches, 3/8” (10mm) Hex Head Wrench,
Pliers, and #2 Screwdriver
1.
To gain access to the motor, remove the ceiling panel next to the unit, if applicable.
2.
Switch the ON-OFF switch to the off position.
3.
Remove the prefilter o
f the prefilter frame. (See Figure 4)
4.
Loosen the electrical box cover screws (2), and slide/lift off cover. (See Figure 4)
5.
Make note of all wire locations for
re-installation
later.
6.
Disconnect 5-pin and 16-pin wire harnesses from the
electrical box housing and remove tubing for test port, if
installed
.
7. Remove the eight mounting screws to free the motor/blower assembly from the lid assembly. If using power
drivers, set the unit to a low torque setting to avoid stripping the sheet metal screws. Carefully remove housing
assembly, paying attention to wire routing.
(See Figure 4)
8. Using an adjustable wrench loosen the two set screws that attach the blower wheel to the motor shaft.
9. Mark the location of the motor support bracket (belly band), then loosen the bolt just enough to allow the motor
support bracket to slid off the motor.
10. Using the removed motor, mark the new motor with the location of the motor support bracket.
11. Replace with the new motor and reassemble by reversing the above steps 1-8. Set the spacing at 0.25” (6.35
mm) clearance between the blower and the upper motor plate/prefilter frame. This will give a 0.11” overlap
between the venturi ring and the blower.
!
FIGURE 4: MOTOR REPLACEMENT
PREFILTER
ON/OFF SWITCH
VENTURI RING
MOTOR
BLOWER WHEEL
Power Entrance
Summary of Contents for CRFF-E
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