Envirco MAC 10 LE-AC - Manual (Page 13)

MAC 10 LE-AC SERVICE MANUAL
7 SERVICE: Removal and Installation of the RSRE Motor
WARNING!
Disconnect the unit from the electrical power source before attempting any
service.
WARNING!
Electrical service should be performed by licensed electricians or authorized
ENVIRCO service technicians.
Step 1. To gain access to the motor, remove the gel seal filter (see Section III).
Step 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 five and
sixteen pin connectors from the motor.
Step 3. While supporting the motor blower assembly from below, remove the six screws
on the underside of the venturi ring and lower the assembly. (See Figure 7).
Note the baffle does not have to be removed to remove the motor/blower
assembly.
Step 4. Before removal of the motor mount bracket, measure the precise location of the
bracket on the motor. Remove the bracket.
Step 5. 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 0.11” (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.
(Referenced by Figures 7 & 8 on page 13)
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