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Laboratory with small chillers need to be regular maintenance, in addition, in the operation, but also need to pay attention to whether the operation is in accordance with the specifications, improper operation caused by chiller problems.
, what are the common chiller problems caused by maintaining and mishandling?1. Failure to check refrigerants on time, resulting in low refrigerant content.
The refrigerant volume is too low, the direct result is the compressor load increase, power consumption increase, noise vibration increase, but the cooling mechanism cold effect is reduced, in addition, through the high-pressure exhaust end pressure gauge to observe, exhaust pressure will become higher, exhaust temperature over the high.
if you want a more intuitive check for refrigerant filling, observe it through a refrigerant mirror.
some cases, especially in the case of long-term lack of refrigerant, will result in the compressor can not be cooled, destroy the compressor, reduce compressor life, and compression opportunities because refrigerant less can not inhale lubricants, which is very serious.
2. Failure to regularly inspect condensers, evaporators of foreign objects, debris, dust, etc., and failure to replace filters in a timely manner - resulting in poor cooling effect, or even complete non-cooling.
chillers need to regularly check the condenser, evaporator dust, foreign objects, to do regular cleaning, for enterprises with "long non-stop operation demand", should be 3-6 months on the condenser, evaporator, etc. for ash treatment, and need to be replaced according to the actual use of drying filter, otherwise the cooling mechanism cold efficiency will be reduced, until uncooled.
3. Voltage does not meet the standard, improper operation directly on, if the compressor is not installed protective devices, may burn the compressor.
the voltage of the power resources provided by the enterprise for the chiller should meet the actual requirements of the chiller.
4. No shutdown, vacuum before filling refrigerant.
or, using a compressor to vacuum, this operation is not standard.
not handled in a timely manner when the system enters the air.
caused problems with chiller pressure, cooling efficiency and cooling capacity.
vacuum is to be done before filling refrigerant, it is recommended to use vacuum pump and other professional equipment for vacuum pumping operation.
vacuum to achieve the air pressure value to meet the requirements, continuous vacuum can not reach a fixed, manufacturer's requirements of the pressure value, it is necessary to detect leakage, fill the leak after vacuum again and fill refrigerant.