ShopTek™ ST45, ST55, ST75 (U.S.A. & Mexico) Operation & Maintenance Manual
6: Maintenance
88292021-240 R01
Subject to EAR, ECCN EAR99 and related export control restrictions.
35
6.4
Compressor maintenance
Refer to
Section 7: Parts List
for the part numbers of all
items mentioned in this section.
6.4.1
Adding compressor fluid
When adding compressor fluid, only use new fluid of the
same type that is already in the compressor. Using dirty
or used fluid may cause poor performance, foaming, and
clogging of the filter element, nozzle, or pipes.
1. Shut down the compressor, bleed pressure
to zero, and allow the compressor to cool.
2.
Slowly
loosen the fluid filler cap by turning it
to the left by hand to allow any trapped air to
vent, then remove the cap.
3. Pour fluid into the fluid filler.
4. Replace the fluid filler cap by turning the cap
to the right by hand until it will not turn any
further. Ensure the O-ring is properly seated.
5. Run the compressor for a short period of
time and check the fluid level through the
sight glass, adding more fluid if necessary
(see
Section 6.3.7: Compressor fluid levels
).
6.4.2
Changing compressor fluid
When changing compressor fluid, only use new fluid of
the same type that is already in the compressor. Using
dirty or used fluid may cause poor performance, foaming,
and clogging of the filter element, nozzle, or pipes.
Figure 6-2: Compressor fluid levels
1. Fluid filler
2. Sight glass
A. Maximum fluid level
B. Normal fluid level
C. Minimum fluid level
WARNING
Do not attempt any maintenance when the com-
pressor is running or pressurized. Stop the com-
pressor, relieve all internal pressure, and isolate
the power supply before performing mainte-
nance. Only a competent person, experienced in
compressor service, should perform any service,
including maintenance.
WARRANTY INFORMATION
Mixing of fluids other than Sullube
®
will void the
compressor’s warranty.
