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Fig. 13 Circulation cooling
Maintenance and repair
W
2
Manometer
W
3
Pressure compensation tank
W
4
Ball valve
W
5
Vent screw (heat exchanger)
W
6
Vent screw (cooling water circulation)
R
Heat exchanger
W
1
W
2
W
3
R
F
W
5
W
6
W
4
7.2.3 Cooling
Check the cooling water system and the pipes every month.
Continuous flow cooling
Depending on the contamination of the cooling water, the dirt trap (Fig. 5/U
6
) has to be serviced after appro-
priate periods. For this purpose, open the screw plug and clean the integrated mesh filter.
Circulation cooling
WARNING
Danger of injury when dealing with compressed air!
When the filter is blown off with compressed air, loose solid particles or powder dust
swirling around may cause injury to the eyes. Inhaling can damage lungs.
Ø
Wear protective glasses and dust mask when cleaning the filter with compressed
air.
a) Regularly check the orifices for the cooling air inlet (Fig. 3/E) and the protective grid of the fan (Fig. 13/V
A
)
and clean them by blowing off.
b) It is also required regularly to inspect the cooling air outlet (Fig. 13/F) on the grid of the heat exchanger
(Fig. 13/R) and to clean it by blowing off.
c) Check the filling pressure on manometer (Fig. 13/W
2
) and refill cooling water if necessary. The filling pres-
sure may not exceed
0.6 bar (g)
and may not get below
1.2 bar (g)
.
Prematic AG, Märwilerstrasse 43, 9556 Affeltrangen www.prematic.ch
Tel. 071 918 60 60, Mail: [email protected]