Viega 2243.10, Instructions For Use Manual

Page: 55 / 62

Error Cause Result
Insufficient pressure (min. 0.1 MPa
(1 bar) flow pressure). Increase
pressure
Air in the line Vent the line
Control defect Check and if applicable replace
control
Message "Flowthrough (4–20 mA)"
no signal Terminal not properly connected Check or establish the connection
Connection pipeline too long Length of connection pipeline
max. 50 m with 0.5 mm
2 ; or
choose larger cross section
Message "Flushing ongoing"
without flush command Magnet valve leaks or does not
close Check magnet valve, clean or
replace if necessary
Magnet valve does not close,
pressure too high Lower the pressure; install pres-
sure reducer if necessary. Oper-
ating pressure: max 0.8 MPa
(8 bar)
Flow switch blocked Check the flow switch, clean or
replace if necessary
Flow switch defective / short-cir-
cuit Replace the flow switch
Hygiene flushing interval every 3
days for 10 s – no malfunction Consider the safety function of the
control in the evaluation done by
an external control
Leaking water Backflow with water leaks Remedy the backflow
3.6 Care and maintenance
3.6.1 General notes
To ensure proper functionality, the flush valve must be inspected once
per month and maintained once per year, see
Ä Chapter 3.6.3 „Perform
maintenance“ on page 56.
If it is connected to a building control system, set the BCS in such a
way to provide for checks of the regular water exchange in the respec-
tive pipeline section, see
Ä „Connecting the external sensor“
on page 38.
This guarantees the smooth operation and proper functionality of the
flush valve. In this way, you prevent stagnation of the water in the con-
nected pipeline sections and any resulting deterioration of the drinking
water.
If the flush valve is not connected to a building control system or
another higher-level control, you need to carry out an additional inspec-
tion once per week.
Handling
Flush valve universal 55 from 62