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What are the maintenance steps of the low temperature chiller?

ClassificationIndustry News 137

What are the maintenance steps of the low temperature chiller?

1. The air-cooled condenser of the FL +5°C ~ +35°C Water Chillers uses air as the cooling medium. Because there is often dust in the air, some of the dust will stick to the outer surface of the condenser fins, which will deteriorate the cooling effect of the condenser over time, especially in places with relatively bad environment, so it should be cleaned regularly.

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The cleaning method is as follows: pure dust can be blown out with compressor air, etc. If there is much dirt, the cooling pipe and fin should be cleaned with non-corrosive cleaning agent to improve the cooling effect.

2. For the water-cooled condenser of the low-temperature refrigeration circulator, the main problem is to remove the scale. The cleaning cycle depends on the water quality. If the water quality is poor, it should be cleaned at least once a year; If the water quality is good, it can be cleaned once every 2-3 years.

The low-temperature refrigeration circulator is equipped with a sleeve-type water-cooled condenser, which can be pickled. The specific operation method is to remove the condenser, drain the accumulated water, and then inject 10% dilute sulfuric acid solution into the valve until there is a solution outflow position at the outlet.

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The dilute sulfuric acid can be discharged after it stays in the condenser for 20~30min. Repeat this for two or three times. Finally, install the connecting pipe between the cooling water pipe and the condenser, open the cooling water valve for flushing for 10~20min, and the anti-scaling and cleaning work is over.

The specific cleaning method of the condenser of the low-temperature refrigeration circulator is shown above. It is recommended that the enterprise regularly develop a cleaning plan to improve the use efficiency of the low-temperature refrigeration circulator.

When starting the air-cooled low-temperature refrigerator unit, check whether the rotation direction of the fan is correct. If the fan is turned forward, it can be started and operated. If the fan is turned backward, it means that the power wiring is in reverse phase, and it must be replaced before starting.

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The set values of various protection devices of the unit have been set in the factory. Users should not change them at will.

In case of fault alarm and shutdown of the unit, first press the stop button of the unit (the alarm light will be off), then check the cause of the fault, and do not force the unit to start up and run until the fault is eliminated.

It is not allowed to shut down the unit by cutting off the main power supply in case of emergency; If the unit is stopped for a long time in winter, turn off the unit first, then turn off the main power supply, oil heater and drain the water in the system.

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