The principle of air energy heat pump refrigeration and air conditioner refrigeration principle is similar. Heat pumps utilize high heat refrigerant vapor generated by the compressor, which enters the condenser through a four-way valve to release heat and condense into a liquid, and then the refrigerant goes to the evaporator to absorb heat and cool the indoor air, and the evaporated refrigerant vapor is sucked into the compressor through a reversing valve to achieve the refrigeration cycle.
The key to the heat pump's heating function is the addition of an electromagnetic four-way valve. By switching the direction of the four-way valve, the flow direction of the refrigerant is changed, making heating, hot water and other functions can be realized.
Air energy heat pump unit consists of to be composed of compressor, water pump, liquid storage tank, filter, heat exchanger, axial fan, insulation water tank, electronic expansion valve and electronic controller. The complexity and precision of the air energy heat pump unit is quite high, there is no technical reserves of air energy manufacturers produced by the unit can not guarantee its stability, low failure rate.
Maintenance methods
1, air-source heat pump is a high degree of automation equipment, the use of regular unit status checks, if you can carry out long-term effective maintenance and repair of the unit, the unit's operational reliability and service life will be unexpectedly improved.
2, air source heat pump often check the power supply of the unit and the electrical system wiring is solid, whether the electrical components have abnormal action, if any should be promptly repaired and replaced.
3, the water filter installed outside the machine should be cleaned regularly to ensure that the water quality in the system is clean, in order to avoid damage to the host caused by the filter dirty clogging unit.
4, do not pile up debris around the unit, so as not to block the air inlet and outlet, the unit should be kept clean and dry around, well ventilated.
5, the user should pay attention to the use and maintenance of air energy heat pump unit: all safety protection devices in the unit are set up in the factory, do not disassemble or adjust.
6, often check the water system water, tank safety valves, level controllers and exhaust devices work properly, so as to avoid air into the system to reduce the amount of water circulation, thereby affecting the unit's heat production and the reliability of the unit's operation.
7, often check the unit's various components of the working situation, check the machine pipeline joints and filling valves whether there is oil, to ensure that the unit refrigerant without leakage.
8, around the unit should be kept clean and dry, well ventilated. Clean the air-side heat exchanger every year to maintain good heat transfer.
9, check the water pump, water line valves is whether the work is normal, water pipeline and water pipe joints are leaking.
10, the host condenser cleaning, we recommend that every two years using 50 ℃ -60 ℃, the concentration of 15% of the hot phosphoric acid solution to clean the condenser, start the host comes with a circulating pump to clean for 3 hours, and finally cleaned with tap water 3 times. In order to take over when cleaning. Prohibit the use of corrosive cleaning fluid to clean the condenser.
11, if the downtime is long, should be set in the pipeline water discharge, and cut off the power supply, set the protective cover. When running again, carry out a full inspection of the system before starting the machine.
12, when the actual water temperature of the air source heat pump water heater is not consistent with the value displayed on the control panel of the unit, please test whether the temperature sensing device is in good contact.
13, the water tank needs to be used for a period of time (generally 3 months, depending on the local water quality) need to clean the scale.
14, unit failure, the user can not be resolved, please report to the after-sales service department in a timely manner, and inform the fault code, in order to send maintenance in a timely manner.