How to quickly detect the failure of the high and low temperature impact test chamber
Failure to encounter high and low temperature impact test chambers during use is difficult to avoid. Although some minor faults will not affect the life of the test chamber, they will still affect the operator's original test plan. Even the leading companies in the ring test industry can't say that their test equipment will never fail. Therefore, Xiaobian specially asked our technicians about the faults that can be solved by themselves and the corresponding solutions. I hope to give some help to the users.
1. It can be processed according to the judgment judgment displayed on the control instrument, or it can be handled by professional technicians for safety reasons.
2. When the low temperature test is carried out, the test chamber cannot reach the set temperature, so it needs to be observed because of the slow temperature drop or because of the rebound after reaching a certain temperature. If it is the former, you need to check if it is because the studio is not dried before it is carried out. If it is caused by the second reason, then it is necessary to check if the sample inside the studio is too much, so that the internal air cannot be fully circulated. If it is not the fault caused by these two reasons, then you need to find a professional technician to check.
3 , high and low temperature impact test chamber refrigeration compressor unit pressure is low, the actual gas consumption is greater than the refrigeration unit output gas volume ; deflation valve failure ; intake valve failure ; hydraulic cylinder failure ; load solenoid valve failure, zui small pressure valve stuck ; user tube There is leakage in the net ; the pressure setting is too low ; the pressure sensor is faulty ; the pressure gauge is faulty ; the pressure switch is faulty ; the pressure sensor or the pressure gauge input hose is leaking ;
4 , the refrigeration compressor unit can not start, the fuse is broken ; the temperature switch is broken ; the wiring is loose ; the main motor thermal relay operates ; the fan motor thermal relay operates ; the transformer is broken ; there is no power input ; the fault is not eliminated ; the controller is faulty.
5 , fan motor overload, fan deformation ; fan motor failure ; fan motor thermal relay failure ; loose wiring ; cooler blockage ; exhaust air resistance.
6. When using the high and low temperature impact test box for high temperature test, the temperature can not reach the set temperature value, then we need to check the electrical system of the equipment first to remove the fault. If it is caused by slow heating, then check the air circulation system to see if the windshield is normally open. Otherwise, you need to check if the motor is running normally. If the temperature rises directly, causing the over-temperature protection device to alarm, then it is possible to control only the system and need to be replaced by the manufacturer. Do not worry about the failure of the high and low temperature impact test chamber . First, please handle the fault with the common fault table. If you still can't solve the problem, please call the professional maintenance personnel.
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