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Compressor
The compressor (4, Fig. 2.3) comprises a semi-hermetic housing with integrated scroll compressor,
brushless DC motor, and electronics. When the air conditioning system is switched on, the compressor will
be activated via pin 1 of the compressor's cable harness, and driven with the required revs per minute
(PWM-signal). When in operation, it compresses the refrigerant to the required condensation pressure.
The integrated electric motor includes a soft-start function to prevent current peaks being transmitted to the
on-board supply, a voltage monitoring (21 V to 31 V), an overload protection, and a temperature monitoring
of electronics (+0°C to 105°C). Outboard limits the compressor is switched off. Restarting is effected by
repeatedly switching on the system.
The functions of the compressor is blocked, if there is no supply of power
from the on-board system via pin 4 of the compressor's cable harness
(chain of safety pressure switch and icing sensor).
Rooftop Air Conditioning System Citysphere
NOTE
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