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7.2
Parameters for water quality
Check that the water contained in the water circuit, which goes through the heat exchangers of the machine (evaporators, condensers,
desuperheaters, recovery units), meets the following requirements throughout the life of the plant:
1
2
3
4
5
Hydrogen carbonate (HCO
6
7
8
Hydrogen sulfide (H
9
10
11
12
Free carbon dioxide (CO2)
13
14
15
16
17
* < 0,1 with low salt content; < 0,02 with high salt content.
Installation, use and maintenance manual - Translation of the original instructions
You are not allowed to close the stop valves on water inlet and outlet of the unit when the hydraulic
circuit is filled with fluid. Otherwise you risk to damage the unit.
PARAMETER
pH
Electrical conductivity
Total hardness
Chloride (Cl-)
-)
3
(HCO
-) / (SO4
-)
3
2
Solphate (SO4
-)
2
S)
2
Nitrate (NO
-)
3
Oxygen
Free Chlorine (Cl
)
2
Ammonia (NH
)
3
Ammonium (NH
+)
4
Iron (Fe)
Aluminum (Al)
Manganese (Mn)
Table 9: Water values of the water circuit.
NOTICE
UNIT
-
μS/cm
°dH
ppm
ppm
ppm/ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
ppm
EN
REQUIREMENT
7.5 - 9
10 - 500
4.0 - 8.5
< 100
70 - 300
> 1.0
< 70
< 0.05
< 100
< 0.02 *
< 0.5
< 5
< 0.5
< 2
< 0.2
< 0.2
< 0.05
76
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