7 | Operation
OPM BWT PERMAQ® Pico Rev. 2.0 EN
EN
32
The selected actuators are deactivated automatically when inspection mode is ended.
7.7 Internal disinfection/chemical cleaning
Disinfection and cleaning is performed by the BWT service team.
Over the device service life, deposits form on the concentrate side of the RO module, which
gradually reduces the permeate output. This undesirable process of deposition (scaling) can
be counteracted to some extent by using a chemical cleaning agent. For this purpose, the
same program function
DESINFECTION int.
is used to both disinfect and clean the RO mod-
ule. Disinfection and chemical cleaning differ only in the choice of chemicals (AQUARIS DES
for
disinfection and Osmoclean C
for cleaning).
The full disinfection/cleaning process is described in the chapter
Chemical cleaning of the RO module [
39].
7.8 External disinfection/chemical cleaning
Disinfection and cleaning is performed by the BWT service team.
This function is used if you are using an external disinfection or cleaning device. Such devices
are provided with a circulation pump that is combined with a tank. Purified water (permeate)
and the chemical disinfectant/cleaning agent is filled into this tank. This mixture is then circu-
lated through the device over a long period of time.
The raw water and permeate valves are opened together for a longer period of time if the ex-
ternal disinfection/cleaning mode is active. The cleaning solution can then be circulated un-
der slight pressure (with a long exposure time) through the device.
Lime scale Ex-Mobil
Lime scale Ex-Mobil
Fig.
24: External rapid anti-scaling device for carrying out external cleaning
7.9 Alarms and messages
If a system-related parameter exceeds or falls below the limiting value set in the
SERVICE
MENU
, an audible alarm is triggered and an alarm message is shown on the display. An alarm
priority and a date and time stamp is assigned to each alarm. Based on the alarms triggered,
the service team can draw conclusions for the purpose of troubleshooting. The last 20 alarms
can be stored and viewed. If the memory is full, the existing messages are successively over-
written (ring memory).
You can find an alarm overview and more detailed information about troubleshooting from
chapter
To read the alarm information, proceed as follows:
1) Choose
ALARMS/MESSAGES
>
Read
and press the
OK button
to confirm.