Cooper & Hunter CH-HP20CMFNM, Руководство пользователя

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Circulating Air Source Heat Pump Water Heater
23
strainer is blocked, whether the air discharged and whether the resistance for the pipeline system is too
big. ΔT should be 3
～
5
℃
.
（
5
）
After test run is finished, clean the strainer on the pipeline before normal operation. After a
period of time (eg: three months), remove and clean the strainer periodically
（
eg: every month
）
for
ensuring normal operation of the unit.
（
6
）
During test run period, if the interval of stop operation for compressor is less than 3mins, do not
turn on the unit with hand. If the operation is no more than 6mins, do not stop operation with hand.
Note: Because the unit adopts totally-enclosed scroll compressor, the phase sequence of power
must be correct.
6.3 Daily operation and maintenance
（
1
）
At the time of ex-factory time, all the safety protection switches have been sent. Users can’t
adjust or eliminated it by themselves.
（
2
）
For the first operation of the unit or restart up the unit when the unit has been cut off power for
a long time (24h above), connect the supply power of the unit in advance to preheat the unit for 8hours
above for avoiding damage to the compressor.
（
3
）
Do not pile up sundries on the unit and accessories. The surroundings of the unit should be
kept dry, clean and well-ventilated. If there’s too much dust on the fins of the condenser, please eliminate
them in time to prevent affecting performance of unit.
（
4
）
Clean the strainer inside the water system periodically to prevent protection or damage to the
unit due to blockage of the water system. Meanwhile, frequently check whether the water supplement
device inside the water system is normal.
（
5
）
If the ambient temperature in winter is below 0
℃
, prohibit cutting off the power. When the unit
won’t be used for a long time, you should not only discharge the water
inside the water system, but also
remove the choke plug of water tank to discharge the water inside the water tank for preventing damage
to the parts inside the unit.
（
6
）
Do not turn on or turn off the unit frequently. Do not close the regulator valve of water system
with hand freely during operation.
（
7
）
Please check the working status of all parts of the unit. Check whether there’s grease on the
pipeline joints inside the unit and refrigerant-charging valve to make sure there’s refrigerant leakage. If
there’s leakage, please contact local appointed maintenance center for maintenance.
（
8
） If there’s malfunction for the unit and the user can’t solve it, please contact local appointed
maintenance center in time.
7 Troubleshooting
Caution: If there’s malfu
nction during operation process, please contact local deader or
appointed maintenance center.
（
1
）
Below phenomenons are not belong to malfunction:
1
）
During operation in winter, the surface temperature of the heat exchanger is lower than outdoor
ambient temperature, and when the surface temperature is lower than 0
℃
, there will be frost on the
surface of heat exchanger, which will affect the heat-exchanging efficiency. Therefore, the control system