The working principle of the cold water machine is to inject a certain amount of water into the water tank of the machine, and the water is cooled by the cooling system of the cold water machine.
The cooling water of the low temperature is fed into the equipment which needs to be cooled, the cooling water of the cold water machine takes the heat away and the temperature is increased and then return to the water tank.
Use.
High pressure failure and treatment measures of cold water machine
(1), the cooling water temperature is high, the condensation effect is poor. The water temperature is high and the heat dissipation is poor at the rated condition of the cooling water required by the chiller unit at 30~35.
, will inevitably lead to high condensation pressure, this phenomenon often occurs in the high temperature season.
(2), the cooling water flow is insufficient, can not reach the rated water flow. The main performance is the unit's water pressure difference between the inlet and outlet is small (and the system is put into operation.
At the beginning of the pressure difference compared to the beginning of the row, the difference in temperature. The reason for the lack of water flow is the system of water shortage or there is air, the solution is in the pipe
Exhaust valve exhaust valve installed on the road;
(3) fouling or blockage of the condenser. Condensate water is generally used in tap water, at more than 30 degrees Celsius is easy to scale, but also because the cooling tower is open
The direct exposure to the air, dust foreign matter is easy to enter the cooling water system, resulting in dirty condenser.
(4) refrigerant charging too much. This kind of circumstance usually occurs after the maintenance, displays for the suction and exhaust pressure, the equilibrium pressure is high, the compression
Machine operating current is also high. Should be under rated conditions in accordance with the suction and exhaust pressure and the balance of pressure and running the current bleeding, until normal.
(5), the refrigerant mixed with air, nitrogen and other non condensing gas. This situation generally occurs after the maintenance, vacuum pumping is not complete. Only row
.
Drop, re pumping vacuum, re filling refrigerant.
(6) false alarms caused by electrical failure. Due to the high voltage protection relay with damp, bad contact or damage, the unit electronic board is affected with damp or damage,
Communication failure caused by false positives.
East Star Refrigeration