Air Filter Maintenance; Air/Oil Separator Elements Replacement - Sullair LS20T Operator's Manual And Parts List

6. Lubricate the new seals with the same type of
fluid used in the compressor and position each
seal in its appropriate place.
7. Carefully push the element into position under
the housing/head.
8. Replace the canister by threading back onto the
filter head.

AIR FILTER MAINTENANCE

Refer to Figure 7-2. Air filter maintenance should
be performed when the air filter maintenance mes-
sage is displayed. The air filter is equipped with a
primary and a secondary element. As previously
stated, the Supervisor II will alert you as to when the
primary element maintenance is necessary. When
removing the primary element, always check the
secondary element for visible dirt, grease/oil, or
damage. The secondary element must be changed
after every sixth primary element inspection. DO
NOT clean the secondary element.
AIR FILTER ELEMENT REMOVAL
1. Clean exterior of air filter housing.
2. Remove the cover/element assembly by loosen-
ing the wing nut securing it.
3. Pull the cover/element assembly out of the hous-
ing.
4. On the inside of the element, you will notice a
lock ring, which fastens the cover to the ele-
ment. Remove the lock ring and pull the cover
and element apart.
5. Clean the interior of the housing by using a damp
cloth. DO NOT blow dirt with compressed air.
6. Inspect the secondary element and replace if
necessary. This element is NOT cleanable.
7. To remove the secondary element, unscrew the
secondary restriction indicator from the threaded
rod running through the element. Pull the ele-
ment out of the housing.
8. Install the new secondary element and replace
the restriction indicator.
9. With the secondary element in place, clean or
replace the primary element. Cleaning instruc-
tions follow.
ELEMENT INSPECTION
1. Place a bright light inside the element to inspect
for damage or leak holes. Concentrated light
will shine through the element and disclose any
holes.
2. Inspect all gaskets and gasket contact surfaces
of the housing. Should faulty gaskets be evi-
Figure 7-3 Separator Element Replacement
*
Primary Replacement Element P/N 250034-122
**
Secondary Replacement Element P/N 250034-134
dent, correct the condition immediately.
3. If the clean element is to be stored for later use,
it must be stored in a clean container.
4. After the element has been installed, inspect and
tighten all air inlet connections prior to resuming
operation.
PRIMARY ELEMENT REPLACEMENT
1. Place the element in position on the cover and
replace the locking to secure the cover and ele-
ment.
2. Install the cover/element assembly and replace
the wing nut. Tighten the wing nut so to seat the
element gasket fully.
AIR/OIL SEPARATOR ELEMENTS REPLACE-
MENT
Refer to Figure 7-3. The separator elements must
be changed when
Required" message is displayed, or once a year,
whichever occurs first. Order separator elements,
number 250034-122 (primary) and number 250034-
134 (secondary). Follow the procedure explained
below for separator element replacement.
Section 7
MAINTENANCE
"Separator Maintenance
33