29
8. Errors/Troubleshooting
Please heed the operation
manual GWM
for error messages that are displayed at the control unit.
The solenoid valve does not open abruptly. It opens gently through a servo-controlled membrane. This normally prevents pres-
sure surges in the drinking water line. Pressure surges occur if pressure differences greater than 2 bar exist between the stand-
ing pressure and flow pressure.
If a shut-off valve or pressure reducing valve is installed in the drinking water line upstream of the system, this must be restrict-
ed until the pressure surge has disappeared when opening the solenoid valve. The disadvantage of this method is a low feed
volume. You must check whether the feed volume is still sufficient for normal process water consumption. In doing so, the fill
level in the process water storage tank must not fall so low that the pressure booster is switched to dry run protection. If the
pressure booster still switches to dry run protection, then the pressure side must also be reduced.
The oxygen supply by the air compressor for biological treatment is too low or possibly interrupted. Please check the hose
connections (see 7.1.4) and operating parameters for air compressor/filtration (see
operation manual GWM
) and adjust/increase
as required.
It is not always possible to completely avoid a slight greywater odour in the installation room or process water. As
such, this is not considered an odour nuisance as such.
We recommend a separate (roof) ventilation line for the greywater buffer tank (see 5.4).
Heed the
operation manual GWM
as well!
9. Disposal
The packaging material should be recycled as wastepaper.
The product should be sent free of charge to the manufacturer, DEHOUST GmbH.
8.1.
Errors displayed at the control unit
8.2.
Pressure surges in drinking water line
8.3.
Odours in the installation room/at the consumers
