SMC Networks HRSH200-A*-20 Series - Chapter 7 Control, Inspection and Cleaning; 7.1 Control of Circulating Fluid Quality

HRX-OM-Q026-B
Chapter 7 Control, Inspection and Cleaning
HRSH Series 7.1 Control of Circulating Fluid Quality
7-1
Chapter 7 Control, Inspection and
Cleaning
7.1 Control of Circulating Fluid Quality
Table 7-1 Quality standard for clean water (tap water)
Standard value
Item Product
For circulating fluid
pH (at 25
o
C)
－
6.0 to 8.0
Electric conductance
(at 25
o
C)
[μS/cm]
100 to 300
Chloride ion [mg/L]
50 or less
Sulfuric acid ion [mg/L]
50 or less
Acid consumption
(at pH 4.8)
[mg/L]
50 or less
Total hardness [mg/L]
70 or less
Calcium hardness [mg/L]
50 or less
Standard
item
Ion silica [mg/L]
30 or less
Iron [mg/L]
0.3 or less
Copper [mg/L]
0.1 or less
Sulfide ion [mg/L]
Not detected
Ammonium ion [mg/L]
0.1 or less
Residual chlorine [mg/L]
0.3 or less
Referential
item
Separation carbonic
acid
[mg/L]
4.0 or less
∗ Quoted from JRA-GL-02-1994, The Japan Refrigeration and Air Conditioning Industry Association.
Use specified circulating fluids only. If other fluids are used, they may
damage the product or result in dangerous hazards.
When using clean water (tap water) ensure that it satisfies the water
standard shown in the table below.
Change the circulating fluid in the tank if any problems are found
during the regular check. Additionally, even if no problems are found,
it is necessary to change the fluid once every 3 months because
evaporation of the fluid causes concentrations of impurities. Refer to
the page containing "7.2 Inspection and Cleaning" for the regular
check.