Commissioning, Operation And Maintenance - Haier CA0035EAND Service Manual

9. Commissioning, Operation and Maintenance

9.1 Unit commissioning
The steps of:
1) The wired remote operating power, if found fault code display unit, first eliminate the fault, confirm trouble-free
unit, And then start the unit.
2) Test run for 30 minutes, out of the water temperature is stable, adjust the water flow to the nominal value, to
ensure the normal operation of the unit.
3) After the unit is running, running current inspection unit, operating pressure, pressure water system, water flow,
and out of the unit Poor water temperature parameters, and the actual situation on the water flow be adjusted to
ensure that the unit is operating properly.
4) According to the actual weather conditions parameter unit operation, referring to the unit's operating
instructions, optimizing the setting unit Parameters to achieve the best working conditions of the unit.
5) After the shutdown interval of 4 minutes and then put into operation, in order to prevent frequent starting unit.
Note
1) Because the host can start and stop the pump control, when the water system flushing, the pump can not be
controlled by the host Run.
2) Water system is not sufficiently unprecedented row, can not open the unit.
3) The flow switch must be installed correctly, or it may occur without water failure.
4) After commissioning the unit shut down intervals of less than four minutes, shall be manually turned on again.
5) In the regular season operation after stopping the operation of the unit, do not turn off the power, otherwise the
compressor can not get heating, It may cause damage to the compressor.
6) When the compressor is stopped for long periods of operation and cut off the power, remember to re-operate
12 hours before the crew should energize, to Preheating the compressor.
7) Commissioning and maintenance may refer to the project schedule, and prepare documented.
9.2 Operating instructions
Users at every turn, strictly follow the steps specified in the instructions sequentially operations to ensure human,
machine safety. The first start operation should be conducted under the guidance of the company commissioning
engineers.
1) In accordance with the requirements, connect all of cable (wire), internal inspection cabinet and compressor
terminal is solid, if loose, retighten.
2) The power unit will preheat compressor lubricants for more than 8 hours;
3) Open the terminal equipment and check its functioning properly;
4) Open system circulating pump, check the operation direction, check the water system is normal;
5) Check the expansion tank of water, turn on the system water circulation passage of the exhaust valve, exhaust
air despite the Tao;
6) Before turning the unit must be inside the various manual valves fully open.
7) Make sure the power cord is firmly connected, no phase, out of phase problems.
After completion of the above work, until the water temperature reached the requirements, you can start the
terminal equipment into normal cooling operation.
First, before starting preparations
1. After repeated flushing water system piping sewage, water quality cleanliness confirm compliance with the
requirements, the system again after emptying open water pump, confirm the water flow, the outlet pressure to
meet the requirements.
2. Make sure the pump wiring and phase sequence are correct. Because the pump wiring external wiring, so the
control panel can not phase sequence and phase loss conditions were detected pump, so make sure the wiring
is correct.
3. The air piping system must be completely excluded. After Luke give water pipes and exhaust air from the empty
place, to be almost ruled out air, and then open the pump emptying, with or without air pump operation can
listen to the voice, if it is a burst of buzz, or pump outlet pressure gauge pointer swing violently, then the system
is still air, we need to stop the pump repeatedly ruled out open air. Remember: If a lot of air, not
a long time water.
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