Envirco MAC 10 LE-DC - Manual (Page 15)

MAC 10
®
LEDC
4x4 Fan Filter Unit
15 Innovators in Clean Air Technology | www.envirco.com | Operation & Maintenance
I n s t a l l a t i o n & S e r v i c e M a n u a l
■ Service: Standard and RSR Motor Removal and Installation
Tools Required: Phillips Head Driver, Battery Operated Drill, (2) 8” adjustable wrenches, 10 mm hex head wrench,
#2 screwdriver, and slip joint pliers
Step 1. To gain access to the motor, remove the ceiling panel next to the unit, if applicable.
Step 2. Switch the ON-OFF switch to the off position.
Step 3. Loosen the electrical box cover screws (2), and slide/lift off cover.
Step 4. Make note of all wire routing and locations for later reinstallation.
Step 5. Disconnect 4-pin and 5-pin wire harnesses from the electrical box housing and remove the tubing for test port, if
installed.
Step 6. Remove the twelve 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.
Step 7. Unwire the control cap by removing the cap cover and unplugging the cable connector to the motor from inside, then
pull back through the grommet next to the motor. Rubber grommet will need to be removed for connection clearance.
Step 8. Remove the six 10 mm bolts from the motor mounting plate to motor housing assembly.
Step 9. Using one adjustable wrench, loosen the hex nut that attach the blower wheel to the motor shaft while holding motor
shaft still with the second wrench. Remove blower wheel from motor shaft and the c-clip for reuse with new motor.
Step 10. Remove the motor mounting hardware from the backside of the motor mounting plate. Replace with the new motor
and reassemble by reversing the above order.
WARNING
DISCONNECT THE UNIT FROM THE ELECTRICAL
POWER SOURCE BEFORE ATTEMPTING
ANY SERVICE
WARNING
ELECTRICAL SERVICE SHOULD ONLY
BE PERFORMED BY A LICENSED
OR QUALIFIED ELECTRICIAN.
Motor/Electrical Removal Motor Assembly
Motor Housing
Assm.
Motor Mounting Plate
10 mm bolts
Mounting
Screws
Motor Mounting
Hardware
Motor Mounting
Plate
Motor Shaft
Hex Nut
Motor
Blower
Wheel
C-Clip
Wiring
Grommet