Three reasons why high and low temperature test chambers cannot cool down

There are three main reasons why the high and low temperature test chamber cannot cool down: First, the control system fails, resulting in the compressor cold can not start
.

At this point, we check
the electrical components that control the compressor and its bypass.

The greater possibility is that the intermediate relay or contactor is damaged, and it can be replaced with a new one
.

Second, the compressor current is too large or the pressure is too large, resulting in thermal relay or pressure controller jump protection
.

At this point, the thermal relay and pressure protector can be
restored.

Third, the refrigeration compressor has failed
.

One of the important and complex parts of the high and low temperature test chamber* is the refrigeration system, as opposed to the rest of
the high and low temperature test chamber.

The refrigeration system is more troublesome is that when a failure occurs, it is more difficult to overhaul and time-consuming
.

Second, the cost of maintenance is high
.

The main reasons for the compressor failure are: First, there is a gap in the copper pipe welding point, and the Freon leaks
.

At this time, it is necessary to weld the copper pipe, and then vacuum, hold the pressure, and fill the freon test machine
.

Second, the components of the refrigeration system have failed
.

The relevant refrigeration components are replaced, but only if the Freon is released
.

After the replacement is completed, it is still necessary to carry out welding, vacuuming, packing, and freon filling
.