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11.
Taking out of service
For safety-relevant instructions regarding possible residual energy, please refer to
Chapter 4.3 Residual
energy.
11.1.
Draining
If the system is filled and there is a risk of frost, suitable measures must be taken to protect the liquid from
frost. The complete cold water circuit must be fully drained before any lengthy stoppage of the unit. Do this
as follows:
Drain the tank via the drain cock provided
(when doing so, close the shut-off valve leading the level sensor)
Drain the evaporator via the drain cock provided
Drain the pump using the drain plug provided
The drain cock is marked on the unit by the symbol in
Figure 22
.
Figure 22: Marking of the drain cock
The position of the drain plug is shown in
Figure
25
.
Figure 23: Position of the pump drainage (horizontal type)
To prevent frost damage the cold water circuit must then be flushed with a mixture of water and
40 % by vol Antifrogen-N (or equivalent).
ATTENTION! Decommissioning must only be carried out by professional and qualified
technicians.
They must also be familiar with the local regulations.
Drain plug
(Allen key 10 mm