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Fig. 5 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 continuously
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 5.4.2 on page 20.
The operating instructions for the monitoring elements are enclosed with the machine.
