Section 6
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. 33
Maintenance
6.1 General
Normal operation of your compressor depends upon per-
forming maintenance and service correctly and according
to a consistent schedule.
To help you follow this schedule, the ShopTek™ micro-
processor controller has a programmable service timer.
When the service timer reaches the programmed value,
the controller will display a service reminder message in
the status column. (After service is performed, you must
reset the service timer. For more information, see the
EC2000 Controller Operation Manual.)
6.2 Daily maintenance
If the compressor is run 24 hours a day, perform the ser-
vices listed in Section 6.2.1 and Section 6.2.2 frequently.
6.2.1 Before starting the compressor
• Check the compressor fluid level and add fluid
if necessary.
• Drain the water from the moisture separator.
6.2.2 After starting the compressor
• Monitor the electronic controller display for any
fault messages or abnormal readings (for
example, unusually high or low temperatures or
pressures).
• Check for fluid or air leaks, excessive vibration,
or unusual sounds.
6.3 Recommended maintenance
schedule
6.3.1 Service at 50 operating hours
• Replace the fluid filter element.
• Check the condition of the purge oil return line
filter and replace the filter if necessary.
WARNING
Isolate the compressor from the power supply
before performing any maintenance or service
work.
WARNING
Do not disassemble any component of the com-
pressor when the compressor is running or pres-
surized. Before disassembling any compressor
component, shut down the compressor, isolate
the compressor from any sources of external
pressure, and bleed the compressor’s internal
pressure to zero.
WARRANTY NOTICE
Failure to use Sullair genuine parts when servic-
ing a Sullair compressor may void your warranty.
WARNING
If you need to open the fluid filler plug, wait for
the fluid level to settle and the separator tank to
depressurize.
Table 6-1: Standard maintenance intervals
Fluid
Change intervals
1
(all hours are operating hours)
Fluid
2
Fluid
filter
3
Fluid/air
separator
element Air filter
3
Sullube
®
10,000 hours 1000 hours
6 months or
4000 hours
2000 hours
1
If multiple intervals are listed, change the item at whichever interval
is reached first.
2
Or when required by fluid analysis or known contamination.
3
If the compressor is in a dusty environment, you should service the
fluid and air filters more frequently.
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