Common troubleshooting methods of vacuum drying oven

Common fault inspection methods of electric vacuum drying oven: 1.
The vacuum cannot be pumped up 1.
The sealing strip is aging and ineffective; Replace the sealing strip, and try not to contact the sealing strip with organic solvents
.

2.
The vacuum pump fails; replace the vacuum pump
.

3.
The door is not closed tightly; close it again and push the glass lightly when starting to vacuum
.

4.
The vacuum degree of the vacuum gauge shows the illusion; replace the vacuum gauge
.

Second, the temperature fluctuates greatly 1.
The external power supply voltage changes greatly; Take voltage stabilization measures to make it meet the power supply requirements of the equipment
.

2.
The temperature control instrument drifts; replace the temperature control instrument
.

3.
No temperature rise 1.
The heater is open circuit; after eliminating the possibility of wiring open circuit, replace the heater if the fault remains
.

2.
The sensor is open circuit; after eliminating the possibility of wiring open circuit, replace the sensor if the fault remains
.

3.
The relay is open circuit; after eliminating the possibility of wiring open circuit, replace the relay if the fault remains
.

4.
The temperature control instrument is not set well; reset the temperature control instrument according to the requirements of the manual
.

 　　Fourth, the temperature control fails and the temperature rises 1.
The sensor is short-circuited; after eliminating the possibility of the wiring short-circuit, replace the sensor if the fault persists
.

 　　2.
The relay is short-circuited; replace the relay
.

 　　3.
The temperature control instrument is invalid; replace the temperature control instrument
.