Water Characteristics - Bosch Compress 3000 DW FOO Installation Instructions Manual

Make sure that the appliance is in "manual"
mode before activating the „Purg".
"man" must be written on the display.
If "auto" is displayed:
▶ Select "man" mode ( page 26,
section 5.6).
CAUTION: Risk of scalding!
▶ Ensure that draining water from the
purge valve presents no risk to people or
property.
▶ Open purge valve (at least one complete rotation, Fig. 13,
[1]) until water drops out through the purge valve outlet.
Ensure that water drains correctly.
1
Fig. 13 Purge valve
[1] Purge valve
[2] Condenser (gas/water heat exchanger)
▶ Close purge valve.
▶ Open the purge screw of the circulation pump and leave it
opened until the water leaks uniformly without visible air
bubbles.
Fig. 14 Circulation pump purge screw
Compress 3000 DW FOO
▶ Close the circulation pump purge screw.
▶ Wait for about 5 minutes until „Purg" mode goes off.
▶ Rotate circulation pump speed selector to position „I".
If, after a few minutes of operation (up to 20-30 minutes),
display shows „E09",you should:
▶ Reset the appliance ( page 36, paragraph „Resetting the
▶ Activate „Purg" function ( page 33, section 5.7.6) and

4.8.1 Water characteristics

Usage of water with unsuitable characteristics can result in
shortened product life.
50 - 100
2
100 - 150
150 - 250
250 - 350
350 - 600
total hardness mg/l
6720646160-50.2V
Fig. 15
Please note that the Langelier saturation Index depends on the
water temperature and the above information considers two
extremes: 10 °C and 70 °C.
While corrosion is higher at low water temperature, scaling is
more important at higher water temperature.
In case of water hardness above 600 mg/l, the Langelier
saturation index must be determined to evaluate the necessity
for water treatment.
Please require help from your technical assistance.
To ensure that the sacrificial anode works properly, the water
conductivity must be within the limits of Tab. 4. In case not,
treatment is required. Always ensure the water characteristics
described in Fig. 15 when applying water treatment targeting
6720801244-19.2V
the water conductivity
The number of minutes remaining are displayed.
During the 5min the „Purg" function lasts,
open the purge valve for a few seconds
several times. This will release some air
excess from the water loop.
Filling and purge procedures are now completed.
system").
repeat the subsequent purge steps described above.
5.5 6.0 6.5 7.0
<50
Water treatment not required (-0.5 < LSI < 1.5)
Water treatment required against scaling (LSI > 1.5)
Water treatment required against corrosion (LSI < -1.5)
Water treatment may be needed against corrosion (-1.5 < LSI < -0.5)
Water treatment vs water characteristics
Installation instructions | 21
pH
7.5 8.0 8.5 9.0 9.5
LSI: Langelier Saturation Index
6720801244-17.3V
6 720 808 869 (2014/06)