Kemper PROTECT RPZ Bedienungsanleitung Seite 24

7
Removal, installation and cleaning the drain valve
Both anti-pollution check-valves and the drain
valve can be removed for maintenance purposes.
All work can be performed without removing the
housing from the pipeline (inline service). Only
authorised specialists are allowed to perform
maintenance.
1.
Close cut-off valves 1 and 2
1.
(see Illustration 3).
2.
Reduce the pressure by opening the ball
2.
valves 3, 4 and 5 (see Illustration 3).
3.
Unscrew pressure control line 14 on the
3.
drain valve.
4.
After loosening the screws, pull down drain
4.
connection 7 and unscrew with the help of
an oil filter strap.
5.
5.
Take off the drain valve.
6. If necessary, clean or replace.
• If no dirt particles are visible but a fault
was observed while inspecting the
drain valve, the drain valve should be
replaced (see accessories/spare parts).
• Clean the area around the valve seat
and the opening slot (e.g., by carefully
blowing out)
Illustration 4: Removal, installation and cleaning
the drain valve
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7. Assemble in the reverse sequence.
7.
•
Grease the O-rings well with Unisilikon
250 or a grease that does not contain
mineral oil.
Note! Otherwise it is possible that the
O-rings will be destroyed.
•
Replace damaged O-rings, see chapter
10, spare parts.
8.
8. Close the ball valves.
9.
9. Slowly open the cut-off valves.
10. Vent the system through the ball valves.
10.
11 11. Check the drain valve.
12.
12 Connect the dust plugs to the ball valves.
Warning!
Never dismantle the anti-pollution
check valve and drain valve from
each other.
High danger of injury!
14