Cleaning Of The Volume Flow Sensor; Required Tools; Cleaning Of The Measuring Turbine; Fig. 33: Potable Water Circuit - oventrop Regumaq X-45 Operating Instructions Manual

Regumaq X-45
Troubleshooting
9.4 Cleaning of the volume fl ow sensor
If not hot potable water can be added at the draw-off
points, there is an operational fault. As listed in the
troubleshooting table in par. 9.1 on page 47, this can
have several causes.
f
If easy to determine causes such as a de-energised
controller can be ruled out, check the volume fl ow
sensor for contamination.
A contaminated sensor means that the volume
fl ow of the cold water inlet or of the cold water in-
let with circulation pipe is no longer detected. As
a result, no more tapping is registered and the cir-
culation pump of the storage cylinder circuit is no
longer activated. In the heat exchanger, energy is
no longer transferred to the potable water circuit.
7
5
4
3
1
Fig. 33: Potable water circuit
1
Temperature sensor for potable water (hot) S2
3 Heat exchanger
4 Fill and drain ball valve for potable water (cold)
5 Volume fl ow sensor for potable water circuit
VTY 20
7 Shutoff ball valve for potable water (hot)
9 Shutoff ball valve for potable water (cold)
10 Safety valve for potable water circuit (10 bar)
11 Connection for circulation pipe
12 Temperature sensor for potable water (cold)/
circulation S3
17 Fill and drain ball valve for potable water (hot)
52
9 10
12
17
9.4.1

Required tools

•
24, 37 and 38 mm spanner
•
Fuse tongs J2 (e.g. EAN 4003773048534).

9.4.2 Cleaning of the measuring turbine

CAUTION
Risk of scalding due to hot media!
If the station has been in operation, there is a risk of
scalding due to unintentional escape of hot water
or water steam.
!
Allow the system to cool down.
!
Wear safety goggles.
CAUTION
Risk of burns on hot components!
Touching hot components can cause burns.
!
Wear safety gloves.
NOTICE
Risk of damage due to pressure surge!
11
The abrupt injection of water into the station can
lead to damage, e.g. to the sensors or sealing
points.
!
Always open and close ball valves slowly.
1
Disconnect the controller from the power supply at all
poles.
2
Slowly close the shutoff ball valve for potable water
(hot) (position
on page 11).
3
Slowly close the shutoff ball valve for potable water
(cold) (position
on page 11).
4
Unscrew the cap of the lower fi ll and drain ball valve
for potable water (hot) (position
and in Fig. 1 on page 11).
52
5
Connect the drain hose for potable water to the lower
fi ll and drain ball valve for potable water (hot) (position
17
in Fig. 33 on page 52
11).
6
Open the lower fi ll and drain ball valve for potable
water (hot) (position
in Fig. 1 on page 11
7
in Fig. 33 on page 52 and in Fig. 1
9
in Fig. 33 on page 52 and in Fig. 1
17
in Fig. 33 on page
and in Fig. 1 on page
17
in Fig. 33 on page 52
).
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