42
Operation Manual
Figure 54: Secondary Filter Assembly.
Cover
A
Filter Bag
Pressure Gauge
Pressure Switch
Filter Inspection
1. Loosen the 3 eye bolts (Figure 52) secur-
ing the lter housing cover and swing the
lid open.
2. Lift the lter bags (Figure 53) from the
lter housing and inspect for debris.
Replace as necessary.
Secondary Filter (40k Operation Only)
The secondary lter, or polishing lter, is used
for 40K operation only. When operating at 40K,
monitor the lter pressure gauge (Figure 54)
for an indication of lter condition. During
normal operation, the pressure gauge should
be within the 30 to 40 psi (2 to 2.75 bar) range.
When differential pressure inside the lter
housing between the clean side and the dirty
side drops approximately 7 to 10 psi (0.48 to
0.69 bar), the pressure switch on the lter
housing will trip and the engine will shut off to
protect the unit from damage. Replace the
dirty lter cartridge if this occurs.
ATTENTION
Filter bags are not washable. Any attempt to wash
or ush a bag for reuse could damage the bag.
This may allow debris past the lter and into the
valves causing damage.
ATTENTION
Extended operation with a dirty lter will lead to
lter failure and allow debris to reach the valves
causing damage to the valves.
It is important to know the condition of your
lter cartridge. Standard units come with a
pressure gauge on the lter. In order to monitor
the condition of the lter it is important to note
the engine operating speed and housing pressure
when the lter is rst changed. Refer to “Filter
Cartridge Replacement” on page 43 for more
information.
Figure 53: Filter Bag Removal.
Figure 52: Filter Housing Cover
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