Installation, Operation, & Maintenance for CRFF-E Series
Page:
1
7 of
2
6
Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | [email protected] | www.krueger-hvac.com
Removal and Installation of the CRFF-E-ARSM with Access Room Side Motor
Disconnect the unit from the electrical power source before attempting any service.
Electrical service should be performed by licensed electricians or authori
z
ed
K
RUEGER
service technicians.
1.
To gain access to the motor, remove the gel seal filter (See Figure 5)
2.
Prior to removing motor/blower assembly, remove blower wheel to expose motor connectors on motor. Using an
adjustable wrench loosen the two set screws that attach the blower wheel to the motor shaft. Disconnect the two
brown wires from the capacitor, using a pair of pliers. Disconnect 5-pin and 16-pin wire harnesses from the
electrical box housing and remove the tubing for test port, if installed.
3.
While supporting the motor/blower assembly from below, remove the six machine screws that secure the venturi
ring to the bottom face of the lid.
4.
Using a 5/32” (0.40 cm) Allen wrench, remove the blower wheel from the motor shaft. Remove motor from the
venturi ring by removing the three # 10 bolts.
5.
Before removal of the motor mount bracket, measure the precise location of the bracket on the motor. Remove
the bracket.
6.
Replace with the new motor and reassemble by reversing the above steps. Set the location of the motor mount
bracket as measured (see above Step 6). Set the spacing at 0.25” (6.35 mm) clearance between the blower and
the upper motor plate/prefilter frame creating a 0.
1
1” (2.80 mm) overlap between the wheel and the venturi ring.
When reinstalling the assembly, align the plate to insure that the leads will reach the electrical box.
GROMMET
MACHINE
SCREW
AND WASHER
WELLNUT
VENTURI
RING
BLOWER
WHEEL
MOTOR
!
FIGURE 5: CRFF-ARSM WITH ROOM SIDE ACCESSIBLE MOTOR REPLACEMENT
SCREEN
GEL SEAL
FILTER
BAFFLE
ASSEMBLY
MOTOR / BLOWER
ASSEMBLY
ELECTRICAL
CONNECTORS
LOCATED IN
THE INNER
PREFILTER WALL
PLENUM
Tools Required:
3/16
"
"
Ball Driver, Phillips screw bit, Head Driver, Battery Operated Drill, (2) 8” adjustable
wrenches, 3/8
"
(10 mm) hex head wrench, #2 standard screwdriver, and pliers.
Summary of Contents for CRFF-E
Page 27: ......
