32
33
EN
EN
The CO
2
gas concentration is calculated as follows:
The following overview shows the required room volumes for common CO
2
cylinder sizes (calcu-
lated on the basis of a CO
2
gas density of 2 kg/m³):
Gas volume or cylinder content (m³)
Room volume (m³)
CO
2
gas concentration in the room (vol.%) =
CO
2
cylinder
content
(kg)
Content
(m
3
)
Content
(l)
Room volume required
for safety reasons (m³)
Room surface area required for
safety reasons (m²)
(for a room height of 2.5 m)
2
1
1,000
35
13.5
3
1.5
1,500
51
14.4
5
2.5
2,500
85
34
6
3
3,000
105
41
10
5
5,000
170
68
If the calculated gas concentration of 3% is exceeded, the following measures are possible:
» Use of a smaller CO
2
gas cylinder
» Increase in the size of the room (e. g. by removing doors)
» Installation of a CO
2
gas warning device in accordance with DIN 6653–2
» Installation of technical ventilation
INSTALLING
Note!
A functional check of the gas pressure reducer should be carried out before installing the CO
2
cylinder.
The CO
2
pressure should be set at 3.5 bar. Depending on personal taste this can be set up to
4 bar. The higher the pressure the more sparkling the water.
Functional check and connection
1. Check the gas pressure reducer for visible external damage (
1
).
2. Screw the gas pressure reducer onto the CO
2
cylinder.
3. Close the shut-off valve (
2
).
4. Open the pressurised gas cylinder valve and close it again (
3
).
5. Check for leaks.
6. Open the pressurised gas cylinder valve (
3
).
7. Use the adjusting screw (
4
) to set the working pressure to approx. 3.5 bar (
5
) – green mark.
8. Use the adjusting screw (
4
) to increase the pressure to 7 bar – red marking (
5
).
9. Use the adjusting screw (
4
) to slowly increase the pressure step by step until a slight blow-
off begins.
10. Use the adjusting screw (
4
) to increase
the pressure further until the safety valve
opens fully with a loud noise. Observe
the pressure gauge (
5
); this should not
exceed a value of approx. 7.7 bar.
11. Close the pressurised gas cylinder valve
(
3
) immediately afterwards and turn the
adjusting screw (
4
) back to 0 bar to pre-
vent icing.
12. Open the pressurised gas cylinder valve (
3
)
again and set the correct working pressure
of 3.5 bar (
4
).
13. Connect the hose to the gas pressure
reducer (
6
).
14. Connect the hose to the CO
2
inlet of the
water dispenser.
15. Open the shut-off valve (
2
).
3
5
1
4
2
6
Fig. 10: Connecting the pressurised CO
2
gas
cylinder
Caution!
Only open the CO
2
gas cylinder a quarter of a turn (opening the valve completely has no influ-
ence on the amount of CO
2
in the water).
Connect the CO
2
gas cylinder as shown in fig. 11.
4
3 2
1
1. CO
2
connection (CO
2
INLET)
2. Hose
3. Hand wheel for regulating the pressure
4. CO
2
gas cylinder
Fig. 11: Connecting the CO
2
gas cylinder
Summary of Contents for AQA drink Pro 20 HCA
Page 96: ...190 191 NOTES NOTES ...
