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Instruction book
By-pass valve (BV) starts opening the oil supply from cooler
(Co) when the oil temperature has increased to 60 degrees
Celsius. At approx. 75 degrees Celsius all the oil flows through
the oil cooler.
1.1.3 Cooling and condensate drain systems (Fig.
1.4)
The cooling system comprises air cooler (2) and oil cooler
(6). The compressors are air-cooled; the cooling air is
generated by fan (3).
A condensate trap (12) is provided in the air outlet system.
Full-feature compressors have an extra condensate trap on the
integrated dryer. Each trap is equipped with a valve for
automatic condensate draining during operation (2 and 5-Fig.
1.5) and a manually operated valve (1 and 4-Fig. 1.5) for
draining after stopping the compressor.
1.2 Regulating system
If the air consumption is less than the air output of the
compressor, the net pressure increases. When the net pressure
is higher than the setpoint (desired net pressure), the regulator
will decrease the motor speed. If the net pressure keeps on
rising when the motor runs at minimum speed, the regulator
will stop the motor. If the motor is stopped automatically and
the net pressure approaches the setpoint, the regulator will
restart the motor.
1.3 Elektronikon control module
The control module consists of an Elektronikon regulator and
a control panel.
1
Dryer
2
Air cooler
3
Fan, compressor coolers
4
Fan motor
5
Vent plug, oil cooler
6
Oil cooler
7
Check valve, air inlet
8
Oil drain plug
9
Check valve/oil stop valve
10 Compressor element
11 Arrow, rotation direction
12 Condensate trap
M1 Compressor motor
Fig. 1.4 Rear view of GA18 VSD
