Atlas Air Compressor - Manual (Page 10)

Instruction book
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1.4 Regulating system on SF Skid - Tank-mounted - Twin
The air net pressure is kept within limits by a pressure switch mounted in the cabinet below the control
panel (Fig. 1.10). The switch is connected to the air outlet and electrically connected in the circuit of
the drive motor. The switch opens and closes its contacts at pre-set pressures.
1 Pressure
gauge
2 On/off switch
3 Hourmeter
4
Air pressure switch/circuit breaker
Fig. 1.10 Control panel SF Skid - Tank-mounted - Twin
When the contacts are closed, the circuit to the drive motor is made: the compressor is operating. The
air output is maximum.
When the pressure reaches the pre-set maximum, the circuit to the drive motor is broken, causing the
compressor to stop. The air output is stopped.
Protecting the compressor
The compressor will be shut down in case temperature switch (TSHH11-Fig. 2.7) trips.
Warning
Before carrying out any inspection or repair, stop the compressor, switch off the voltage, open the
isolating switch and depressurize the compressor.