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8.3 Flushing and filling the circuits
!
CAUTION
Material damage!
Opening shut-off valves quickly produces pressure surges.
• Always open shut-off valves slowly and in a controlled manner.
ü All flow meters must be completely open.
ü The system pressure must not exceed 3 bar when flushing
and filling.
1. Close ball valves 1 and 2 on the manifold.
2. Close all valves on the return using the protective caps.
2
1
10
3. Attach the flushing and filling hose to the fill and drain valve 3
on the supply side; the discharge outlet on fill and drain valve
4 must be open.
4. Completely open the valve on the circuit to be flushed using
the protective cap.
5. Flush the circuit with clear water.
6. Once flushing is over, close the control valve and flush/fill the
next circuit.
7. Once the flushing and filling procedures are complete, remove
the hose from the end set (fill and drain valves 3 and 4).
8. When venting using the end set Q1 and KFE90, follow illustra-
tions A and B on this page.
9. The protective end caps are to be fully closed off once the
system has been flushed and filled.
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4
HKV2013AF-IM-DE-W-UK-03-2023-Rev.2 | Part no. 10086671
A
B
EN
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