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10.2. Compressor with additional water cooling
10.2.1. Water connection
When the compressor is positioned at the operation location, connect the cooling water
tubes to the appropriately marked ports in the compressor wall or frame. To adjust flow,
install the ball valve on the outlet port.
The required water temperature at the inlet is 20±5ºC. The inlet and outlet ports are marked
with the arrows.
10.2.2. Description of construction and operation of the screw compressors with
additional water cooling
The compressor is equipped with the additional heat exchanger. In the exchanger, oil heat
is absorbed by water supplied from outside. The additional oil thermostat is installed outside
the exchanger. In the compressor with additional water cooling, the oil is cooled first by the
heat exchanger and, in the case of insufficient cooling or missing water, by the standard
air-cooled oil cooler. The compressor is designed in such a away to be able to safely and
correctly work with shut off supply of cooling water.
Except for connection of water to the inlet and outlet port, the compressor does not require
any special service operations. During installation and first start-up, using the valve on the
water outlet port adjust such a water flow to maintain the oil temperature within the range
80-95ºC.
P [kW]
30
∆T[K]
V[l/min]
30
(complement to the description in section 5 )
Water/oil heat exchanger
Thermostat
Water inlet port
Water outlet port
Fig. 24 Screw block and motor with the electric heater.
Demand for cooling water
37
45
55
75
90
35
45
55
75
90
Operating and Maintenance Manual 09/2019 – part I
Screw compressors
110
132
160
200
20
110
120
150
185
250
315
250
300
45
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