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Regumaq X-45
Maintenance
10. Maintenance
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.
10.1 Maintenance
Carry out the following maintenance work once a year.
Complete the maintenance report promptly after
the completion of each maintenance. You will fi nd
a corresponding form in the appendix. Sign the
report and provide the user with a copy.
10.1.1 Leakage check (visual inspection)
f
Check all connections to the outside to the pipework
and inside the station for moisture. If necessary,
retighten screw connections or replace defective seals.
f
Check the heat exchanger for damp spots.
Especially in connection with discolouration,
damp spots indicate the formation of corrosion.
Leaking heat exchangers must be replaced.
10.1.2 System pressure check
f
Compare the actual values in the storage cylinder and
the potable water circuit with the last maintenance or
handover report.
f
Readjust deviations in the potable water circuit at the
pressure reducer.
f
If the pressure in the storage cylinder circuit is too low,
increase the water pressure.
f
If the pressure in the storage cylinder is too high, there
could be a corrosion problem in the heat exchanger.
Defective heat exchangers must be replaced.
138114082-V04.04.2022
10.1.3 Functional check of the safety valves
(potable water circuit)
Check the function of the safety valves at six-month
intervals in accordance with DIN EN 806-5.
10.1.4 Water sampling
If required by law for your application environment, take
samples from the potable water circuit of your installation
at the prescribed intervals.
To do this, connect a water sampling valve (see Fig. 9 on
page 21) to the fi ll and drain ball valve for potable water
17
(hot) (position
in Fig. 1 on page 11).
Another sample must be taken at the furthest
draw-off point.
Insofar as an additional pipe is used for circulation
operation, connect a third water sampling valve to
the intended connection and take an appropriate
water sample there.
10.1.5 Actuation of the four shutoff ball valves
NOTICE
Risk of damage to due pressure surge!
The abrupt fi lling of the station can lead to damage,
e.g. to the sensors or sealing points.
!
Always open and close ball valves slowly.
In the course of maintenance, actuate the four shutoff ball
7
9
16
valves (positions
,
,
This loosens deposits and keeps the valves operable.
10.1.6 Electrical components and plug
connections
Check:
•
the cable plug connections of all components
connected to the controller for fi rm seating and
integrity.
•
the correct positioning of the temperature sensors.
10.1.7 Functional control of the check valve of
the circulation set
If you use a circulation set in the potable water system,
check the check valve for correct functioning. Observe the
documentation of the potable water circulation set.
The annual control of the check valve is a normative
requirement according to DIN EN 806-5.
18
and
in Fig. 1 on page 11).
55
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