Operating and Maintenance Manual 09/2019 – part I
Screw compressors
18
The condensate removed from the machine must be directed to the appropriate tank and
then disposed in accordance with the applicable environmental protection regulations.
Electrical system
The dryer is connected directly to the compressor terminal block. The dryer is started
directly when voltage is supplied to the power supply terminal block.
Further operation is performed automatically by means of the compressor controller that
first starts the dryer and then compressor. After the compressor start, the dryer continues
operation for the set time and then it is stopped.
5.6 Description of the dryer maintenance
The frequency of maintenance operations applies to the machine operation in normal
conditions (i.e. operation in the environment free from dust and ventilated room). When the
machine is operated in dusty environment, the frequency of maintenance operations must
be increased.
Fig. 7 Condensate drain in the compressor
Fig. 8 Condensate drain in the compressor with dryer
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