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3.
3.2.4
Capacity control
A capacity setting is also achieved through speed control using a frequency
inverter in the speed range of 500 to 1500 rpm.
The capacity setting in the reciprocating compressors is achieved by raising and
lowering the suction valves on the refrigerant compressor using the control oil
pressure.
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19.12.2019
Expelling oil from the draining vessel
After evaporation, hot gas is led via the solenoid valve (2310.1) into the drain-
ing vessel for a short while and this pushes the oil into the crankcase of the
reciprocating compressor.
The control time parameters for the solenoid valves can be set at the control
panel.
Notice
For details of the control process, see documentation of the control.
► The documentation for the controller is part of the product documenta-
tion.
Description
Functional description
53
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