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Airmac Owner’s Manual
August 2006
© Glenco Manufacturing Pty Ltd
Page 22 of 44
Slowly open the outlet valve, if fitted, provided that it is connected to a suitable
compressed air hose(s) and/or distribution pipe(s) not open to the atmosphere.
When compressor operation is no longer required, always turn the pressure switch to
the OFF position marked “0” before switching off the electricity supply and/or unplugging
the supply lead. Always use the pressure switch to turn the compressor on and off
otherwise the electric motor may be damaged.
240 Volt Dual Pump Air Compressors
Check that both electricity supplies are turned off.
Check that the compressor’s isolating switch (mounted on the dual DOL starter
enclosure) is turned off.
Check that the compressor’s pressure switch is turned to the OFF position marked “0”.
Plug in both of the compressor’s electrical supply leads.
Switch on both electricity supplies.
Turn on the compressor’s isolating switch.
Turn the compressor’s pressure switch to the ON / AUTO position marked “I”. The
compressor will now start automatically whenever the air receiver pressure drops to or
below the preset 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). The compressor is specially designed so that one pump starts approximately
two seconds after the other in order to minimize total starting current.
Slowly open the outlet valve, but only if it is connected to a suitable compressed air
hose(s) and/or distribution pipe(s) not open to the atmosphere.
When compressor operation is no longer required, always turn the pressure switch to
the OFF position marked “0” before turning off the isolating switch, switching off the
electricity supplies and/or unplugging the supply leads. Always use the pressure switch
to turn the compressor on and off otherwise the electric motors may be damaged.
415 Volt Air Compressors
Check that the electricity supply is turned off.
If fitted with a star-delta starter, check that the compressor’s isolation 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.