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Instruction book
5 ADJUSTMENTS AND SERVICING
PROCEDURES
5.1 Air filters (16-Fig. 1.2)
1. Stop the compressor and switch off the voltage. Remove
the filters.
2. Fit the new filters.
3. Reset the air filter service warning using key <<Reset>> in
submenu <<Service>> 1).
5.2 Coolers
Keep the coolers clean to maintain the cooling efficiency.
Stop the compressor and switch off the voltage. On GR,
unscrew bolts (4-Fig. 1.3) and rotate the fans away from the
cooler block. Blow air from the compressor elements
compartment through the coolers towards the drive motor
compartment. Remove any dirt. Reposition and fix the fans.
Make sure that the fans rotate freely.
Note
If it should be necessary to wash the coolers with a cleansing
agent, consult Atlas Copco.
On GR W, consult Atlas Copco for cleaning.
5.3 Safety valve (2-Fig. 1.3)
Operating
Operate the safety valve by unscrewing the cap one or two turns
and retightening it.
Testing
The valve can be tested on a separate compressed air line. If
the valve does not open at the pressure specified in section 7.3,
consult Atlas Copco.
Warning Never run the compressor without safety valves.
No adjustments are allowed.
5.4 Oil/water separators (Fig. 5.1)
As an option, an oil/water separation system can be integrated
inside the bodywork to separate the major part of the oil from
the condensate. The condensate meets the requirements of the
environmental codes.
The system includes an OSD315 oil/water separator connected
to the condensate trap downstream of the air cooler. The
condensate is led from the condensate trap through inlet (4)
and filter (5) towards water vessel (3) where the oil rises due to
the difference in specific mass. The water flows through
condensate outlet (1) to the outside of the bodywork. The oil
flows into collector (6) which must be emptied regularly.
For Full-feature compressors, the system also includes an
OSD90 connected to the dryer condensate trap. OSD90 are
additionally provided with a pre-filter (7) and a pressure gauge
(8).
Servicing procedure
1. Stop the compressor and switch off the voltage.
2. Close the outlet valve and open the valve underneath the
air cooler condensate trap.
3. Oil the gaskets of the new filters, fill the filters with water
and fit them.
4. On OSD90, unscrew the pre-filter housing, fit a new pre-
filter and fit the housing using a new O-ring.
5. Inspect the strainer/restrictors at the inlet of the separator
vessels, clean and reinstall them. Close the valve underneath
the condensate trap.
Footnote chapter 5
1) See "User manual for Elektronikon regulator".
1 Water outlet
2 Oil outlet
3 Water vessel
4 Condensate inlet
5 Filter
6 Oil collector
7 Pre-filter
8 Pressure gauge
Fig. 5.1 OSD90/315 oil separators (option)
1
23
4
5
6
1
6
2
3
4
5
7
8
51446F
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