11
I n s t a l l a t i o n , O p e r a t i o n , & M a i n t e n a n c e M a n u a l
MAC 10
®
LEAC2
Fan Filter Unit
■
Service: RSRE Motor Removal and Installation
Tools Required:
3/16 hex head wrench, Phillips head screwdriver
Note:
It is highly recommended to also change the motor capacitor when changing the motor.
Step 1.
To gain access to the motor, remove the gel seal HEPA/ULPA filter.
Step 2.
Switch the ON/OFF power switch on top of the unit to the OFF position, or, if easier, OFF at the breaker panel.
Step 3.
Disconnect motor wire harness connector from top panel, per filter removal instructions on page 9.
Step 4.
Remove the four screws mounting the blower bracket to the upper plate, and cut cable tie securing blower cable to
blower bracket. Remove motor mount assembly from plate.
Step 5.
Place motor mount assembly on workstation. Remove the four screws mounting the motor to the blower bracket.
(Note orientation of blower cable to bracket.)
Step 6.
Install new motor/blower and components previously removed in reverse order to complete work. Carefully tighten
motor mount bracket screws. Don’t forget to reinstall challenge port tubing.
WARNING
DISCONNECT THE UNIT FROM THE ELECTRICAL
POWER SOURCE BEFORE ATTEMPTING
ANY SERVICE.
WARNING
ELECTRICAL SERVICE SHOULD ONLY
BE PERFORMED BY LICENSED ELECTRICIANS OR
AUTHORIZED ENVIRCO SERVICE TECHNICIANS.
MOTOR MOUNTING BRACKET
CABLE TIE (FOR MOTOR CABLE)
MOTOR/BLOWER ASSEMBLY
MOTOR/BLOWER ASSEMBLY CONNECTOR
MOTOR BRACKET MOUNTING HARDWARE (4X)
#10-32 x 1/2 PHP SCREW
#10 LOCKWASHER
MOTOR MOUNTING HARDWARE (4X)
M6x16mm PHP SCREW
M6 LOCKWASHER
NOTE ORIENTATION OF MOTOR/BLOWER ASSEMBLY
AND MOTOR MOUNTING BRACKET, CABLE IS ORIENTED
AT NOTCH IN MOTOR MOUNTING BRACKET AND CABLE
TIED TO SIDE OF THE MOTOR MOUNTING BRACKET.
PREFILTER BRACKET
Figure 9.2 - Motor Replacement
Figure 9.2: RSRE Motor Replacement
PUSH-FIT BULKHEAD UNION
PREFILTER BRACKET
PRESS RING IN AND
PULL OUT ELBOW
(FFU ASSEMBLY SHOWN WITHOUT PREFILTER AND ELECTRICAL COVER)
Figure 8 - Motor Replacement
Figure 8: Challenge Port Detail
Innovators in Clean Air Technology | www.envirco.com | Installation, Operation & Maintenance