SMC Networks HRR010-A-10 Series, Operation Manual

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HRX-OM-X084
Chapter 8 Control, Inspection, Exchange and Cleaning
HRR Series 8.1 Quality Control of Circulating Fluid and Facility Water
8-1
Chapter 8 Control, Inspection,
Exchange and Cleaning
8.1 Quality Control of Circulating Fluid and Facility
Water
Table 8-1 Quality criteria for clean water (tap water)
Item Unit
Criterion
Circulating fluid Facility water
Standard
item
pH (at 25
o
C)
－
6.0 to 8.0
6.5 to 8.2
Electric conductance
(at 25
o
C)
[μS/cm]
100 to 300 100 to 800
Chloride ion [mg/L] 50 or less 200 or less
Sulfuric acid ion [mg/L] 50 or less 200 or less
Acid consumption
(at pH 4.8)
[mg/L] 50 or less 100 or less
Total hardness [mg/L] 70 or less 200 or less
Calcium hardness [mg/L] 50 or less 150 or less
Ion silica [mg/L] 30 or less 50 or less
Referential
item
Iron [mg/L] 0.3 or less 1.0 or less
Copper [mg/L] 0.1 or less 0.3 or less
Sulfide ion [mg/L] Not detected Not detected
Ammonium ion [mg/L] 0.1 or less 1.0 or less
Residual chlorine [mg/L] 0.3 or less 0.3 or less
Free carbon dioxide [mg/L] 4.0 or less 4.0 or less

Quoted from the standard “JRA-GL-02-1994”, The Japan Refrigeration and Air Conditioning Industry Association.
Use specified fluids only. If other fluids are used, they may damage the
product, causing fluid leakage, or result in hazards such as electric
shock or leakage of electricity.
When using clear water (tap water), ensure that it satisfies the water
quality criteria shown in the table below.
Replace the circulating fluid and/or the facility water if any problems
are found in the regular check. Even if no problems are found, some of
the water in the tank evaporates and impurity concentration in the
circulating fluid increases. Replace the circulating fluid on the tank
once in every 3 months. Refer to the section "8.2 Inspection,Exchange,
Cleaning" for regular inspection.