HRX-OM-M005
Chapter 7 Product Maintenance
HRZD Series
7.1 Water Quality Management
7-1
Chapter 7 Product Maintenance
7.1 Water Quality Management
Table 7-1 Water Quality Standards
Substance
Facility water
spec.
Circulating water
spec.
pH (25°C)
6.5 to 8.2
6.0 to 8.0
Electrical conductivity (25°C) (µs/cm)
100 to 800
0.5 to 300
Chloride ion (mgCl-/L)
Max. 200
Max.50
Sulfate ion (mgSO
4
2-
/L) Max.
200
Max.50
Acid consumption (pH4.8) (mgCaCO
3
/L) Max.
100 Max.50
Total hardness (mgCaCO
3
/L) Max.
200
Max.70
Calcium hardness (mgCaCO
3
/L) Max.
150
Max.50
Ionic silica (mgSiO
2
/L) Max.
50
Max.30
Iron (mgFe/L)
Max. 1.0
Max.0.3
Copper (mgCu/L)
Max. 0.3
Max.0.1
Sulfide ion (mgS
2-
/L)
Not be detected
Ammonium ion (mgNH
4
+
/L) Max.
1.0
Max.0.1
Residual chlorine (mgCl/L)
Max. 0.3
Max.0.3
Free carbon dioxide (mgCO
2
/L) Max.
4.0
Max.4.0
Standards
Filtering (µm)
Max. 5
* According to the Water quality guideline for refrigeration air-conditioning equipment: JRA-GL-02-1994
Only designated circulating fluids are permitted to be used in the
product.
Potential failure or fluid leak may occur if disregarded, which can
result in electric shock, ground fault or freezing of fluid.
Be sure to use potable water (tap water) compliant with water quality
standards in the table below for ethylene glycol aqueous solution and
facility water.
If the periodic inspection finds a nonconforming substance in the
facility water, clean the facility water circuit and recheck the quality of
the facility water.
Ensure the circulating fluid is not contaminated by oil, moisture, or
foreign substances.
Potential product failure due to insufficient cooling and freeze may
occur if disregarded.
Summary of Contents for HRZD020-W1S-W1S
Page 24: ...HRX OM M005 Chapter 2 Name of Each Section 2 1 Name of Each Section HRZD Series 2 2 ...
Page 98: ...HRX OM M005 Chapter 5 Product Operation 5 3 Operation Screen HRZD Series 5 54 ...
Page 128: ...HRX OM M005 Chapter 8 Appendix 8 8 Thermo Chiller Daily Inspection Sheet HRZD Series 8 20 ...
