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Discharging pressure
is too high
Discharging pressure
is too low
19. Water quality management
If the quality of chilled water and cooling water is bad, it not only will cause dirty in the heat transmission
pipe, effect the heat exchanging efficiency, lower the unit performance, but also make corrosion in the pipe,
which will result in the serious problem. The customer should deal with the water according to the below
table. In the chilled water system, the soft water should be utilized. Check the water quality in a certain
period; if it cannot pass the requirement, measures should be taken immediately.
Item
PH value (25℃)
conductance
（25℃）
Basic
Chlorine ion (Cl
items
Vitriol ion (SO
Acid consumption
（PH4.8）
Full rigidity
Iron（Fe）
Sulfur ion（S
Reference
Ammonium
+
（NH
）
items
4
Silicon
（SiO
）
2
20. Daily maintenance
Note: Before performing any maintenance and repair to the unit, please cut off power supply.
Electricity leakage will cause body injury.
In order to exert the unit's performance fully, must pay attention to the following items:
1. Electric wire Connection: the power supply provided should be within the compressor permitted
range.
3.Lack of refrigerant
1.Pipe or filter is blocked
2.Refrigerant is too much or there is
non-condensed gas
3.Condenser
is
releases badly
1.Lack of refrigerant
2.Compressor failure
Unit
μS/cm
-
-
)
mg Cl
/L
-2
-2
)
mg SO
/L
mg
CaCO
/L
3
mg
CaCO
/L
3
mg Fe/L
2-
2-
）
mg S
/L
+
ion
mg NH
/L
4
dioxide
mg SiO
/L
2
2.Re-adjust the set temperature
3.Recharge the refrigerant
1.Clean pipeline, change the filter
2.Release the redundant refrigerant
dirty
and
heat
3.Clean the condenser
1.Recharge refrigerant
2.Change the compressor
Recharge
Chilled
water
(cooling) water
6.5-8.0
6.5-8.0
<200
<800
<50
<200
<50
<200
<50
<100
<50
<200
〈0.3
<1.0
/
/
〈0.2
<1.0
<30
<50
HAIER CHILLER
drier
or the non-condensed gas.
Tendency
Corrosion
0
0
0
0
0
0
0
Dirty
0
0
0
0
0
0
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