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6.4.9 Servicing air inlet shut-down
valve
The air shut-off valve is part of the refinery
equipment and is mounted on the piping between the
engine inlet and the motor charge air cooler outlet.
The valve prevents combustion air to enter the engine.
When an overspeed is detected, the engine will
shutdown (emergency stop) and the air shut-off valve
will close.
To reset the air shut-off valve, pull the handle of the
valve up until a click is heard.
6.4.10 Servicing water separator
The water separator in the back of the unit filters
water condensate out of the compressed air, before
the air is discharged through the outlet valves.
Water condensate from the water separator is drained
through a nipple in the bottom of the frame. Connect
a drain hose to the nipple and make sure that the
condensate is properly disposed of.
Service the filter of the water separator every 500
hours.
6.4.11 Servicing electric blow-off valve
The blow-off valve, fitted on the MP air inlet pipe, is
opened to release air when the air inlet throttle valve
is closed; it closes when the throttle valve is opened.
Replace the membrane, the diaphragm valve
assembly (1) and the spring every 2000 hours (kit
2906 0568 00).
6.4.12 Servicing automatic fire
suppression system
Preventive maintenance
Check the heat sensitive detection wire for actual
damage. A damaged detection wire can lead to a false
release of the fire suppression system.
Periodic maintenance
To give maximum assurance that the system will
operate as intended, maintenance must be performed
every six months or sooner, depending on the
operating and/or environment conditions.
Maintenance must be performed by authorized
personnel only. Please contact Atlas Copco.
All maintenance activities are to be recorded in a
logbook.
Do not use a high pressure cleaner
to clean the fire suppressing system
or parts of it.
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