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E. Maintenance and service
Examination before trial run
1. Check the water tank is filled with water, and open the water outlet tap till water flow out.
2. Check the water pressure is normal (0.15Mpa~0.7Mpa).
3. Check the circulation pipes are filled with water or other anti-freezing liquids.
4. Check the air inlet or outlet is well connected; and the air outlet pipe heat insulation is
completed.
5. Check the power supply voltage is normal, whether according with the nameplate
requirement.(Range ± 10%).
6. Check whether the equipped parts are screwed /locked well.
7. Check whether the wirings are according with the Circuit diagram, and the earth-wire
is connected.
8. Check whether the wind inlet and outlet has been cleaned up and no obstacle.
9. Check whether the condensate drain pipe is connected well and no blockage.
After power-ON, check the control panel display is normal.
10.
Trial running
1. After the machine starts, to hear and determine whether there is abnormal sound or
collision during operation, if there is abnormal sound, stop the unit immediately and
check for it until there is no abnormal sound to continue operation.
2. For the first time power on, the compressor will have 3 minutes delay protection function.
3. Observe whether the drainage of condensate water is smooth, prevent the chassis
stagnant or spill water.
4. For the first time discharge hot water or start the units after a long time closure,
the water tap of outlet pipe may flow muddy water, this is a normal phenomenon, and
continue to drain for a period of time can be cleared.
5. After stop operation for a long time, there may have condensation water hereabout
the air outlet or pipe (especial in humidity weather), this is a normal phenomenon, use a
dry washcloth to clean it or by air dry.
6. The advance setting parameters of the operation panel has been set at the factory,
users no need to reset it, the maintenance person should be carefully set if needed.
Maintenance and service
1. After carry and move the unit by the first time installation, and connects the water pipes and
filled the tank with water. The machine should be rest for 1-2 hours before start trial running.
2. The water heater inlet filter needs to be cleaned once per 3 months. At the same time, we
suggest draining all the storage water and repeatedly wash for 2-3 times to remove the dirt and
sediment.
3. To clean the fin heat exchanger, use a hard nylon brush to clean it or the dustproof filter-net.
Be careful not to damage the copper tube. If there has compressed air, use a high pressure air
tube to clean the fin heat exchanger. This needs to be done once per 2-3 months.
4. When overheating appears, opaque cover can be used to cover one of the solar collectors.
If there is no demand for hot water for a long time, all the collectors should be covered
without fail.
5. Check the working situation of the machine and pipes regularly. When a problem appears, it
can be found and solved in time.
6. In freezing area, the performance of the anti-freezing liquid should be checked regularly.
7. Check the safety valve monthly to avoid leakage and blockage.
8. When clean the water tank or heat exchanger must turn off the machine and power supply.
9. If the supply cord is damaged, it must be replaced by the manufacturer or its service
agent or a similarly qualified person.
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