User manual

S07.0.1Y.6C-04 Operating Manual GEWAS 181 A - 1/2" / ... - 3/4" / ... - 1" page 5 of 6
9 What to do in case of alarm
Turn off the possibly connected device and the GEWAS control unit (POWER to „0“).
Seek and eliminate error causes.
Possible error causes:
- A water film is located at the water sensor.
- The contacts of the water sensor are bypassed (e.g. via a metal surface)
- The water sensor has been disconnected or is defective.
Turn on the GEWAS control unit (POWER to „1“) and press service button at the same time.
Turn on the connected device (if necessary).
10 Operating and maintenance advices
1
Please Note: When the control unit is turned off, the power socket could be electrically live,
and for that, a connected device is turned on!
Attention: Before turning off the control unit, for turning off the alarm, the device connected to the
GEWAS 181A (e.g. Washing machine, dish washer, etc.) should be turned off, be-
cause it will be turned on when you deactivate the control unit.
2
The solenoid valve is servo controlled. This means that the pressure on the water inlet must be at
least 0.5 bar higher than the pressure on the water outlet. This will be circumstance when the wa-
ter flows out of the outlet with opened water supply. When this condition is not fulfilled, the sole-
noid valve will not be able to open.
3
Pressing the SERVICE button on turning on the device is not required.
This is for deactivating the internal power saving circuit in order to raise the pull-in power of the
solenoid valve to about 4-times. This is to prevent that in the course of time calcification of the
solenoid valve make it opening difficulty resp. inhibit opening.
4
It may happen that the solenoid valve closes and does not open again after a short electrical pow-
er outage. In this case you have to turn the control unit off and on again  the solenoid valve will
open again.
5
In order to ensure long-time and trouble-free operation the device has to be checked regularly (like
its usual with any safety device). Therefore the sensor contacts of the water sensor have to be
bypassed (by a spoon, knife, etc.) at least every month. When doing so the solenoid valve should
react with an audible .clack.. This is for making sure that, even with calcareous water and not reg-
ularly operated, the solenoid valve is fully operational regardless of the calcareous deposits.
6
The solenoid valve is operated with an internal power saving circuit. The total power consumption
at permanent operation will only be 4 W. It is normal that the solenoid valve is warming up (the
magnetic head to approx. 50°C and the brass housing will get hand-hot).
7
In order to ensure tightness in perpetuity, foreign substances (like stones, sand, etc.) must be kept
away from the tube of solenoid valve.
8
The device has to be treated and handled carefully in accordance with the above specification (do
not throw, do not bump into sth. etc.).
9
!!! Do NOT use the GEWAS in a humid environment !!!
10
Keep the magnetic head dry! Water may destroy the magnetic head!
Pay attention that the water tap is tight in order to prevent that no water drops onto the solenoid
valve resp. the magnetic head.