Compressor Fluid Levels; Compressor Maintenance; Adding Compressor Fluid; Changing Compressor Fluid - Sullair ShopTek ST18 Operation & Maintenance Manual

ST18 & ST22 (U.S.A. & Mexico) Operation & Maintenance Manual
6.3.6

Compressor fluid levels

1. Fluid filler
2. Sight glass
A. Maximum fluid level
B. Normal fluid level
C. Minimum fluid level
Figure 6-1: Compressor fluid levels
Check the fluid level when the compressor is running.
The fluid level in the sight glass should normally be
between halfway and three-quarters of the way up the
sight glass.
• While the compressor is running, the fluid level
should never exceed the maximum fluid level
shown in Figure 6-1.
• Fluid should be added before the fluid level
drops below the minimum fluid level shown in
Figure 6-1.
88291013-137 R05
Subject to EAR, ECCN EAR99 and related export control restrictions.

6.4 Compressor maintenance

Refer to Section 7: Parts List for the part numbers of al
items mentioned in this section.
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.
6.4.1

Adding compressor fluid

When adding compressor fluid, only use new Sullube
fluid. Using dirty or used fluid may cause poor perfor-
mance, foaming, and clogging of the filter element, noz-
zle, or pipes.
WARRANTY INFORMATION
Mixing of fluids other than Sullube
compressor's warranty.
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 6.3.6: Compressor fluid levels).
6.4.2

Changing compressor fluid

When changing compressor fluid, only use new Sullube
fluid. Using dirty or used fluid may cause poor perfor-
mance, foaming, and clogging of the filter element, noz-
zle, or pipes.
6: Maintenance
WARNING
®
will void the
®
®
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