FAN FILTER UNIT - HIGH EFFICIENCY
INSTALLATION & SERVICE INSTRUCTIONS
Service: Changing Motors in the Field
Top Access Motor/Blower Assembly
Sample line string below:
FFU-HE/24/48/RSR/BC/ECM/115/10//CT//HEPA//ECMDX//WK/DSW/PC/
TMB
/ATS/MBAS/FBAS/WPF/PL-AL/F-AL/PL-B12/
F-B12
NOTE:
Disconnect the unit from the electrical power source before attempting any service. Electrical service should be performed
by a licensed electrician or authorized service technician.
NOTE:
When performing any type of maintenance on the FFU-HE, be careful to reduce as much as possible the potential for
introducing the internals of the unit to dirt, dust, and debris that may be present in the unit’s external environment.
STEP 1:
Gain access to the top of the unit by removing adjacent ceiling, or access panel.
STEP 2:
Bend up pre-filter retaining clips and remove the pre-filter (non-ducted), or remove the duct collar/pre-filter housing and
pre-filter (if applicable) via screws (ducted) to expose motor assembly. Reference the below figures for further detail.
Pre-filter Retaining Clips – Non-Ducted
Remove Duct Collar
Remove Pre-Filter
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