Test equipment and test equipment maintenance and maintenance methods
There are many types of environmental testing equipment, but the most used environmental testing equipment is the high-temperature, low-temperature, hot-humidity test chambers. Now, most of them are high-temperature, low-temperature, hot-humidity test chambers, ie, constant temperature and humidity chambers, which are more difficult to repair. Other environmental testing equipment is large and representative. The following is an example of constant temperature and humidity, the constant temperature and humidity of the structure and some common faults and troubleshooting methods.
Common faults and troubleshooting methods:
malfunction
category
malfunction
phenomenon
System check
Method of exclusion
Electricity
Device
unit
Minute
No
Have
Electricity
source
Is the external power supply connected/the voltage is normal?
Reconnect
Power line/connection contact is good
Is the power fuse contact good or burned or damaged?
Reinstall/replace the core (seat)
whole
machine
Do not
can
start
move
Whether the connection is good
Reconnect
The master switch contact is good / burned or damaged
Repair/replacement
Contactor or relay contact is good/whether it is burned or damaged
Whether the instrument over temperature setting is correct/whether it is burned or damaged
Reset/replace
Power input (phase sequence relay) phase sequence connection is correct/whether it is burned or damaged
Reconnect/replace
Pressure controller pressure adjustment is correct / whether burned or damaged
Re-adjust/replace
No
Have
plus
heat
Whether the connection is good
Reconnect
Meter display is normal/output
Repair/replacement
Instrument settings are correct
Reset
Whether the blower switch is on/whether it is damaged or damaged/whether the contactor is connected or burned out
Open/Change/Connect
Test equipment and test equipment maintenance and maintenance methods
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