20
Figure 22. Diagnostics mode.
1. Dispensing volume. 2. Grade I water quality. 3. TOC monitor (HPLC & Bio). 4. Polishing mod-
ule status. 5. Water level in storage tank. 6. Pre-filter countdown. 7. Grade II water quality. 8.
Deionization module status.
6.6.
Unit rinsing
. A rinsing is neccessary before starting the operation. Press the
Run
key (fig. 21/1) to start the rinsing cycle. Leave the unit rinsing for 2 hours.
Attention!
Check the fittings inside the unit for leakage.
Check the water flow in the REC OUT tube abd drain tube. The water flow in the drain
tube must be 2
–5 times stronger than in the REC OUT tube. If the REC OUT tube
flow is dtronger, then the RO membrane is damaged. Stop the unit by pressing the
Run
key and contact the service.
6.7.
Filling the tank
. Press and hold the
Run
key for 2 seconds. If the tank is connected
and not full and the feedwater supplying pressure is adequate, display shows the
Filling tank stage change. Unit fills the storage tank with Grade II water. As soon as
the tank is full, unit shuts off the water supply and displays the Tank Full message.
This takes approximately 1 hour with an empty tank.
6.8.
Recirculation
(models
HPLC
and
Bio
only). Allow the unit to fill the storage tank,
disconnect water supply and setup the recirculation schedule as shown below. Leave
the unit recirculating for 8 hours. Recirculation removes all remaining organic con-
tamination and lowers the TOC levels below 2 ppb.
Attention!
Microfilter / ultrafilter must be rinsed before use! When the tank is full,
press the
Dispense
key (fig. 21/4) and let flow at least 10 L of purified
water through the filter.
6.9.
Menu of the unit
(figure 23). Additional settings for the unit are available by pressing
the
Menu
key (fig. 21/2). To navigate the menu, use arrow keys (fig. 21/9), to select
an item, press the
ОК
key (fig. 21/10), to return to the previous level or to exit the
menu
– the
Menu
key.
6.9.1. Volumetric Dispense (figure 24). This menu item controls turning on the volumetric
dispense and setting the dispensed water volume by pressing the
Dispense
key (fig.
21/4). Select the set dispense volume (0.01 to 10 L, with 0.01 L increment) using the
up and down arrow keys. To change the next digit, press the
Mode
key (fig. 21/3).
To confirm the changes, press the
ОК
key.
