15
Donaldson Company, Inc.
Factory-Installed HEPA or 95% DOP Final
Filter
HEPA filters provide 99.97% efficiency on 0.3 micron
particles. 95% DOP filters are less efficient than HEPA’s
but generally provide longer final filter life.
The HEPA or 95% DOP final filter is attached to the side
of the WSO M unit using side-mounted latches.
Final Filter Removal and Installation
1. Release the latches on both sides of the HEPA/95%
DOP filter frame. Dispose of used filter properly. Do
not wash.
2. Install new HEPA/95% DOP filter with the gasket
facing the frame and the airflow arrow pointing away
from the unit.
Retrofit Kit Field Installation
An afterfilter installation retrofit kit is available for
customers who decide to add a HEPA or 95% DOP
filter to an existing field-operating WSO M machine-
mountable unit originally configured with a standard
exhaust. The field kit includes: afterfilter, adaptor with
latches and hardware.
latch
HEPA or 95% DOP final filter
airflow
HEPA or 95% DOP Final Filter Replacement
Electrical Connection
Electrical installation, service,
or maintenance work must
be performed by a qualified electrician and
comply with all applicable national and local
codes.
Turn power off and lock out electrical
power sources before performing service or
maintenance work.
Do not install in classified hazardous
atmospheres without an enclosure rated for
the application.
WSO M mist collectors must be equipped with a
customer-supplied safety disconnect with short circuit
protection, contactors, and overload protection.
Complete the wiring as shown in 3 Phase Motor Starter
Wiring.
Unwired Units
1. Remove the exhaust pack. Remove all bolts
and lift starting at one corner.
The gasket material is fragile
and must be handled with care. If the gasket is
disrupted, reposition evenly around the inner
and outer flanges when replacing the exhaust
panel.
U
V
W
RED
WHITE
BLACK
MOTOR
3~
PE
GRN/YEL
U
V
W
PE
PREWIRED IN FACTORY
PROVIDED & WIRED BY OTHERS
JUNCTION BOX
CONNECT
T
O
MOT
OR
ST
AR
TER
3 Phase Motor Starter Wiring
