© Glenco Air & Power Pty Ltd
threaded male air line fitting. Check that the threaded connection is secure by ensuring that it has
been properly tightened and also by trying to pull the air hose or pipe away from the outlet valve.
Check that the outlet valve is closed.
Plug in both of the compressor’s electrical supply leads.
Switch on both electricity supplies.
Turn the compressor’s pressure switches to the ON / AUTO position marked “I” one at a time; it
doesn’t matter which one goes first. The compressor will now start automatically whenever the air
receiver pressure drops to or below the pre-set cut-in pressure of approximately 650 kPa (94 psi). It
will also stop automatically whenever the air receiver pressure reaches approximately 870 kPa
(126 psi).
Slowly open the outlet valve, but only if it is connected to a suitable compressed air hose(s) or
distribution pipe(s) not open to the atmosphere.
It is normal that one compressor pump may re-start or stop a few seconds after the other. If the
compressed air demand is low, only one compressor pump may operate. Should this be a normal
condition, you may choose to operate only one of the compressor pumps and alternate between
them so as to apportion their wear and tear evenly.
When compressor operation is no longer required, always turn the pressure switches to the OFF
position marked “0” before switching off the electricity supplies or unplugging the supply leads.
Always use the pressure switches to turn the compressor on and off otherwise the electric motors
may be damaged.
6.4 415 Volt Air Compressors
Check that the electricity supply is turned off.
If fitted with a star-delta starter, check that the compressor’s On / Off switch is turned to the “OFF”
position and that the emergency stop button is released (which can be verified by turning the stop
button head clockwise one-quarter of a turn).
Check that the compressor’s pressure switch is turned to the “OFF” position.
Connect an air hose or flexible pipe to the compressor’s discharge outlet valve using a compatible
threaded male air line fitting. Check that the threaded connection is secure by ensuring that it has
been properly tightened and also by trying to pull the air hose or pipe away from the outlet valve.
Check that the outlet valve is closed.
Plug in the compressor’s electrical supply lead if it is fitted with a plug. Otherwise, check that the
supply lead is permanently connected (or “hard-wired”) to the electricity supply.
Switch on the electricity supply.
Turn the compressor’s On / Off switch to the “ON” position, if fitted.
Turn the compressor’s pressure switch to the “AUTO”. The compressor will now start automatically
whenever the air receiver pressure drops to or below the pre-set cut-in pressure of approximately
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