Lauda P 10 User Manual

4.9 Cooling water
4.9.1 Cooling water requirements
NOTICE!
Risk of cooling circuit leaking due to corrosion
Device damage
 Do not use corrosive cooling water.
The following safety notice is relevant for devices containing natural refrig-
erant:
CAUTION!
Risk of cooling circuit leaking due to corrosion
Fire, explosion
 Do not use corrosive cooling water.
Cooling water is subject to specific purity requirements. A suitable procedure
must be employed to purify the cooling water in line with the contamination
in the water and maintain the water quality. Unsuitable cooling water may
cause the condenser and the entire cooling water circuit to become blocked
or damaged, or start to leak. The entire cooling circuit and cooling water
circuit may sustain extensive consequential damage as a result.
 Free chlorine consisting of disinfectant, for example, and water con-
taining chloride will cause pitting corrosion in the cooling water circuit.
 Distilled, deionized and demineralized water are unsuitable due to their
reactivity and will cause corrosion in the cooling water circuit.
 Sea water is unsuitable due to its corrosive properties and will cause
corrosion in the cooling water circuit.
 Iron particles and water containing iron will cause corrosion in the
cooling water circuit.
 Hard water is unsuitable for cooling due to the high lime content and will
lead to calcification of the cooling water circuit.
 Cooling water containing suspended matter is unsuitable.
 Untreated, unpurified water such as river water or cooling tower water is
unsuitable due to its microbiological content (bacteria), which can settle
inside the cooling water circuit.
Data Value Unit
pH value
7.5 - 9.0
---
Hydrocarbonate [HCO
3
-
]
70 - 300
mg/L
Chloride < 50 mg/L
Requirements
Suitable cooling water quality
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Lauda P 10 Specifications

General

Brand	Lauda
Model	P 10
Category	Thermostat
Language	English