HAIER CHILLER
stop
3.Lack of refrigerant
2.Re-adjust the set temperature
3.Recharge the refrigerant
Discharging pressure
is too high
1.Pipe or filter is blocked
2.Refrigerant is too much or there is
non-condensed gas
3.Condenser is dirty and heat
releases badly
1.Clean pipeline, change the filter
drier
2.Release the redundant refrigerant
or the non-condensed gas.
3.Clean the condenser
Discharging pressure
is too low
1.Lack of refrigerant
2.Compressor failure
1.Recharge refrigerant
2.Change the compressor
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.
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.
Tendency
Item Unit
Recharge
water
Chilled
(cooling) water
Corrosion Dirty
PH value (25
℃
)
6.5-8.0
6.5-8.0
0
0
conductance
（
25
℃
）
μ
S/cm
<200 <800
0
0
Chlorine ion (Cl
-
) mg
Cl
-
/L <50
<200
0
Vitriol ion (SO
-2
) mg
SO
-2
/L <50
<200
0
Acid consumption
（
PH4.8
）
mg
CaCO
3
/L
<50 <100
0
Basic
items
Full rigidity
mg
CaCO
3
/L
<50 <200
0
Iron
（
Fe
）
mg Fe/L
〈
0.3
<1.0 0 0
Sulfur ion
（
S
2-
）
mg S
2-
/L /
/
0
Ammonium ion
（
NH
4
+
）
mg NH
4
+
/L
〈
0.2
<1.0 0
Reference
items
Silicon dioxide
（
SiO
2
）
mg SiO
2
/L <30
<50
0
