oventrop Regumaq X-25 Operating Instructions Manual page 43

"Regumaq X-25"
20
4
Illust. 37: Cleaning of the measuring turbine
(4)
Fill and drain ball valve for potable cold water
(5)
Flow sensor for potable water circuit VTY 20
(12) Temperature sensor for potable cold water /
circulation, S3
(20) Collar nut heat exchanger side
(21) Collar nut potable water supply
7. Loosen the collar nut of the fl ow sensor (position (5)
in Illust. 37) with an 24 mm spanner.
8. Loosen the collar nut of the temperature sensor
for potable cold water / circulation (position (12) in
Illust. 37)
9. Remove the fl ow sensor (position (5)) and the tem-
perature sensor for potable cold water / circulation
(position (12)) carefully from the system component.
10. Remove the O-rings and keep these safe from con-
tamination until required again for reassembly.
11. Loosen the collar nut potable water supply (position
(21) in Illust. 37) with a 38 mm spanner.
12. Loosen the collar nut heat exchanger side (position
(20) in Illust. 37) with a 37 mm spanner.
13. Remove the system component carefully from the
station.
NOTICE
Overheating of the measuring turbine!
The bearing of the measuring turbine is cooled
by the water fl ow during operation. The use of
compressed air for cleaning can lead to irrepa-
rable damage due to overheating.
f Clean the measuring turbine with running
water only.
14. Clean the sleeve with measuring turbine. Remove
any residue such as hemp remains with (running)
water.
Direct the fl owing water through the system com-
ponent in the opposite direction to the fl ow (from
position (20) to position (21) in Fig. Illust. 37). This
is where a water hose with an appropriate spray
nozzle is particularly suitable.
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15. Check whether the measuring turbine is free from
extraneous substances and running smoothly once
again.
16. If the cleaning process was successful, reinstall the
system component by following this sequence in
reverse order.
If the measuring turbine is still
blocked, the sleeve with measuring
turbine must be removed as described
in section 9.4.2.1.
Once removed, the fl at seals cannot be reused.
Use new seals for reassembly (see „4.2 Sealing
set" auf Seite 20).
17. Close the lower fi ll and drain ball valve for potable
cold water (see position 17 in Illust. 36
1 on page 10 ).
18. Bleed the potable water circuit (see section 7.2 on
page 29)
19. Restore the power supply.
9.4.2.1 Removal of the sleeve with measuring
turbine
Required tools
• Locking ring pliers J2 (e.g. EAN 4003773-
048534).
1. Loosen the locking ring (see position (22) in Illust.
38) using appropriate locking ring pliers.
Illust. 38: Locking ring
(22) Locking ring
2. Remove the locking ring.
Troubleshooting
and in Illust.
22
43