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Fig. 6 Circulation cooling
Product overview and functioning
U
1
Vent valve
U
2
Temperature control
U
4
Liquid level monitor
V
A
Fan (IP 44)
W
1
Circulation pump (IP 42)
W
2
Manometer
W
3
Pressure compensation tank
R
Heat exchanger
W
1
W
2
W
3
U
2
U
1
U
4
V
A
R
4.7.2 Circulation cooling (water-air-heat exchanger)
With circulation cooling, the compressor is filled onetime with a water-Glysantin-mixture. This is continuous-
ly pumped through the compressor and the heat exchanger using a circulation pump. The heat exchanger is
air-cooled (fan).
For safety reasons, the cooling system is fitted with a temperature control.
The required pressure compensation is controlled by a pressure compensation container filled with air.
Temperature control
Monitors the temperature of the cooling water. Default mode: T
max
= 60 °C
Liquid level monitor / manometer
Monitors the filling level of the cooling water. Factory-provided filling quantity (filling pressure): p
max
= 1.2 bar
Pressure compensation container
Controls the operating pressure of the cooling water. System pressure: p
max
= 1.2 bar
Circulation pump
Pumps the cooling water through the compressor. Voltage: 230 V AC
Fan
Cools the cooling water in the heat exchanger. Voltage: 230 V AC
For connection of sensors see chapter 5.6.2 on page 23.
The operating instructions for the monitoring elements are enclosed with the machine.
Prematic AG, Märwilerstrasse 43, 9556 Affeltrangen www.prematic.ch
Tel. 071 918 60 60, Mail: [email protected]