Elmo Rietschle S-VSI 301, Operating Instructions Manual, Page: 76 / 84

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Maintenance and repair
Refill cooling water:
a) Release the vent screw (Fig. 13/W
6
) on the cooling water circuit.
b) Fill the cooling water circuit with water-Glysantin-mixture (ratio 70:30) on the ball valve (Fig. 13/W
4
), until
the cooling water escapes through the vent screw (Fig. 13/W
6
).
Close the vent screw (Fig. 13/W
6
)
c) Fill the cooling circuit until its pressure is max. 1.2 bar (g) .
Check pressure by manometer (Fig. 13/W
2
).
Replace cooling water:
a) Open ball valve (Fig. 13/W
4
), release vent screws (Fig. 13/W
5
, W
6
) and drain old cooling water in a suitab-
le container.
b) Fill air in the pressure compensation tank (Fig. 13/W
3
) to 0.5 bar (g).
c) Release the vent screws on the heat exchanger (Fig. 13/W
5
) and on the cooling water circuit (Fig. 13/W
6
).
d) Fill the cooling water circuit with water-Glysantin-mixture (ratio 70:30) on the ball valve (Fig. 13/W
4
) until
the cooling water escapes through the vent screw (Fig. 13/W
5
) of the heat exchanger.
Close the vent screws (Fig. 13/W
5
).
e) Further fill the cooling circuit until cooling water escapes through the vent screw (Fig. 13/W
6
).
Close the vent screws (Fig. 13/W
6
).
f) Fill the cooling circuit until its pressure is max. 1.2 bar (g) .
Check pressure by manometer (Fig. 13/W
2
).
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