Troubleshooting - Absolute OF-S90 oilfree Manual

GB
Before any operation on the compressor, disconnect the plug from the socket.
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Empty air tank of air before dismantling any part of compressor unit's pressure sys-
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tem.
Following operations must be done by a specialist.
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3.1 The compressor does not start
a) No power from mains. Check fuses and socket.
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b) Breakage or loose joints in electrical connections. Check with tester for continuity.
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c) Pressure in air tank too high for activation of pressure switch. The pressure switch
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makes circuit only when pressure has dropped to preset start pressure.
d) Leaky non-return valve. Take off the flexible pressure pipe to see if air leaks out
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from the valve. If so, unscrew the valve cap (Fig.4 item 1), clean the rubber disk (item
2) and his place with a dry cloth and assembly the whole with care . If the leakage per-
sists, the whole valve must be replaced.
e) The capacitor is defective. Replace it.
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f) The thermal relay has switched off the compressor due to overheating. When
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cooled, the compressor will automatically turn on at the suitable temperature.
3.2 The compressor does not reach the maximum pressure
a) Check any air leak (See point 3.6).
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b) Check the pressure switch efficency and if necessary adjust it (See point 2.2
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Pressure adjustment).
c)The non-return-valve is clogged so creating a flow restriction.
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Clean or replace the valve.
3.3 The compressor works, but pressure does not increase in tank (or increase too
slowly)
a) Air filter clogged. Clean or replace.
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b) Check any air leak (See point 6).
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3.4 The compressor works but does not load
The defect can be due to a valve or a gasket break. Replace the damaged part imme-
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diately.
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Troubleshooting

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