Section VI - Servicing
Routine Maintenance
Isolate Unit
1. Close inlet and discharge isolation
valves and allow pressure to vent off
the system. On systems with Auto
Start/Stop, if the system is stopped
(Auto Start/Stop active), the manual
override lever on the pilot valve can
be pulled to de-pressurize the system.
Gas will vent through the membrane
exhaust port until the system is
depressurized. In addition the third
filter has a manual drain valve that
can be opened to de-pressurize the
system.
Change Filter Elements ~
Annually
* Perform Element changes only when
system is de-pressurized.
1. Unscrew the housing from the filter
head and drain off any oil in the
housing into a suitable container. Stuff
clean rag into filter bowl to keep unit
clean while changing the elements.
2. Unscrew the locking nut on the
bottom of the element and discard the
element. Replace the element with a
new one of the appropriate grade and
replace the locking nut. Do not over
tighten.
3. Auto drain – Each filter is fitted with
an internal automatic float drain to
carry away condensate (water & oil).
There should only be a small amount
of liquid in the housing. As the level of
the oil increases, the float rises and
discharges liquid from the housing. If
a large amount of oil is found, remove
the auto drain, clean or replace.
4. Replace Filter housing. After
replacing the element, remove the
rag and screw the housing back on to
the filter head. Do not over tighten.
Housing is sealed with an o-ring, so
gently hand-tighten.
5. Repeat this process for all three (3)
filters (1, 2 & 3 - standard/1, 2 & 4 -
premium).
Quincy Compressor-DEFENDER™
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