Copyright 2010 Biological Controls
8/19/2010
6
5.
MAINTENANCE INFORMATION
Remove power from the Blower Module before starting maintenance
routines. Procedures involving electrical wiring should only be performed by
qualified electricians.
5.1.
Blower Module
The Blower Module requires no maintenance since it is equipped with permanently lubricated
bearings. The facility power is connected to a circuit-breaker (fuse for 1/5 HP option) mounted in
this module. The breaker/fuse should never open during normal operation. Always consult an
electrician if the breaker/fuse opens since this usually indicates a more serious electrical problem.
5.1.1.
Blower Removal
In the unlikely event the blower must be removed from the Blower-Module chassis follow these
steps:
•
Remove the intake collar plate from the blower box by removing the screws around the
periphery. Disconnect the internal power cable (three (3) conductors connecting the motor
to the Blower-Module electrical box. This cable will be reused if a new motor is installed.
•
Use a ¼” inch hex socket to unfasten the four #6 sheet-metal screws that connect the blower
exhaust-port to the blower chassis.
•
Remove the six (6) ¼-20 hex-head bolts holding the blower motor-mounts to the chassis.
The blower along with the motor mounting feet can now be withdrawn from the blower
chassis for repair or replacement.
•
Transfer the mounting feet to the new motor using the same hardware. Reinstall in the
reverse order.
5.2.
Filter Module
The Filter Module contains the HEPA and Pre-filter media that requires renewal when indicated by
the Air Pressure Gauge or optional Air Switch change-filter LED mounted on the wall mounted
control unit. When the Air Switch option is not provided the Wall Switch Control Plate will not
include the “Chg Fltr” Red LED.
All units are factory tested and meet or exceed both Electrical Hi-Pot and Particle-Count (99.997%
clean exhaust-air @ .3micron particle size) tests per FDA requirements. A ¼ inch diameter probe-
port is accessed by removing a plastic snap-in cover in the center of the rear panel chassis-cover
when field testing is required.
The UV lamps require change-out every 8000 hrs (approximately 1 year) of continued use. Log the
Hour-Meter readings to determine the UV maintenance schedule. The UV view-port mounted on
the control panel will glow blue when the UV bulbs are active.
