How to deal with the failure of biochemical incubator
Shanghai Jianhu made a summary of the failures encountered during the use of the biochemical incubator equipment, as shown in the following table:
Fault phenomenon
Fault reason
Troubleshooting
No power on
(Light does not shine)
No power in the power outlet or poor contact with the plug
repair
The power cord of the box is broken or the plug is not plugged in
Repair, re-insert
The power switch is broken (or not turned on)
Replace and turn on the power switch
Fuse blown
If the power is still blown after the replacement, you need to check whether the motor and other parts are short-circuited (the motor will be damaged, there will be odors, the wire package is black, etc.) or through the shell (insulation resistance is 0), and then restart after repair.
No display
Wiring dropped or the instrument burned out
Reconnect the wires or replace the meter
the meter shows
"----"
Bad sensor or broken wire (drop)
Repair or replace Pt100 (100Ω at 0 ℃, 0.3Ω / ℃)
Temperature value exceeds the control range
Use the appropriate temperature value within the specified value
Compressor is broken or pipeline is blocked or R134 leaks
Replace, plug, add R134
Compressor overheat protector starts
When the compressor temperature drops, it will recover naturally
Compressor protector burned out (scorched smell)
Replace protector
Temperature runaway and
AL1 alarm light is on
AL1 setting is incorrect
Reset
Triac is broken down
The temperature controller is broken (AL1 alarm light is not on)
Replace the temperature controller
Does not heat up
Bad temperature controller
HEAT light is on, the bidirectional thyristor is not conducting
Replace the temperature controller
The timer function is used, and then the temperature drops
Make ST ≠0
Large temperature control error
There may be a static difference
The fan is broken (does not turn)
Replace the fan
Pt100 is in poor contact, the resistance becomes larger
Rewire
PID and other parameters are set incorrectly
Readjust the parameters
Too much frost on the condenser and low cooling power
Heat up to defrost
Fan sound abnormal
Or noisy
(Greater than 70db (A))
Bad fan or compressor fan
Replace the fan
The air duct plate or wind blade is damaged after wiping
Repair, replace
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