LabTower EDI
Ultrapure water system
23
11.1.4 Operating hours:
A fourth press on the menu-key in this menu allows the operating hours of the UV-lamp and the
reverse osmosis pump to be displayed. The operating hours counter for the UV-lamp registers
the total length of time for which the lamp was switched on. When the maximum operating time
is reached, the "
UV-time"
fault message is triggered. The limiting value is set in the OEM menu.
There is no limiting value for the reverse osmosis pump.
The display shows:
UV-Time
0000 h
RO Time
0000 h
12.1.5 Pretreatment operating hours:
A fifth press on the menu-key in this menu brings the operating hours of the pre-treatment
cartridge to display.
The limiting value for this operating time is set in the UV menu. The fault message that is
displayed when the limiting value is exceeded is
"Pretreatment"
.
The operating hours of the pretreatment are counted whenever the reverse osmosis pump is
running.
The display shows:
Pretreatment
0000 h
11.1.6 Cleaning:
A sixth press on the menu-key in this menu allows cleaning to be carried out should there is a
need for it. The cleaning process is triggered by pressing the Enter-key. The pump then starts
and the inlet solenoid valve and the rinsing solenoid valve open for a period of 60 seconds.
During cleaning, no faults or measured values are displayed. When the cleaning process has
finished, the system is in the last operating mode (operating or stand-by).
The remaining cleaning time is displayed during cleaning.
