No electricity box or the display does not show.
Please check whether the special brake of the cold storage is malfunctioning or disconnected. The display is normal, the library lamp is normal, but the compressor does not work.
Answer
Check whether the three-phase power is missing two-phase or whether the pressure controller has tripped (see item 4 below for the reasons for tripping and recovery work). Check whether the emergency stop button is in good condition.
No cooling or the cooling effect is poor.
Please check whether the special brake of the cold storage is malfunctioning or disconnected. The display is normal, the library lamp is normal, but the compressor does not work.
- Check whether the condenser of the refrigerator is full of dust or not well ventilated, and remove it as required.
- Check whether the frost on the cooler in the storage is too thick, and manually defrost or reset various parameters of the cold storage (such as resetting the temperature in the storage, shortening the freezing time, extending the defrosting time, etc.)
- Check whether the seal of the cold storage is intact and eliminate it. Check whether the rotation of the condenser of the cold storage and the blades of the cooling fan are correct, and adjust the rotation of the fan by adjusting the phase sequence of the power supply.
- Check whether the parameter setting of the STC-9200 controller of the cold storage is correct and re-adjust. Check whether the STC-9200 controller of the cold storage is malfunctioning and replace it.
- Check whether the parameter setting of the STC-9200 controller of the cold storage is correct and re-adjust. Check whether the STC-9200 controller of the cold storage is malfunctioning and replace it.
Electrical Box Noise
Please turn off the power and press the iron suction of the contactor to eliminate the noise. If the noise still exists when the AC contactor is working, you must ask an electrician to remove the AC contactor to remove the sundries on the suction iron of the contactor. Replace the AC contactor of the same model.
Machine Noise
Please check whether the cold storage startup time is too long, whether it is caused by vibration or mechanical failure (please stop and check).
No Start/Stop
Check whether the condenser is full of dust, poor ventilation, or high ambient temperature, which causes the condenser pressure of the refrigerator to be too high. In order to protect the compressor, the machine stops running under the action of the pressure controller and waits for removal. After the gray reaches good heat dissipation, press the black reset button on the voltage controller, and the machine will automatically resume operation. The parameter setting of STC-9200 controller is wrong, just reset it. The refrigeration is not good. Please refer to fault 2. The temperature control fails. The electrical appliance is damaged. After closing, the cold storage distribution box did not respond, but the three-phase power was normal. Please check the neutral line to see if there is 220V voltage.
Air Cooler Dripping.
Please check whether the drain pipe of the air cooler is blocked or has dirt.
The lighting in the library does not turn on.
Please check whether the switch beside the warehouse door is out of order and the bulb is damaged. When checking, cut off the power supply and pay attention to the waterproof of the lamp when installing the lampshade.
Inguralarr Start/Stop
When the ambient temperature is high, after the refrigerator has been running for a period of time, the temperature of the refrigerator has not reached the set value and the refrigerator will be shut down in advance. This is because the condensing pressure of the refrigerator is too high due to the increase of the ambient temperature. In order to protect the compressor, the machine stops running under the action of the pressure controller. After the heat dissipation is good, press the black reset button on the pressure controller, and the machine is Can automatically resume operation. And check whether the condenser is full of dust or not well ventilated. Do not arbitrarily adjust the set value on the pressure controller, otherwise the pressure controller will not play the role of protecting the refrigerator. Under normal circumstances, cold storage parts (various valves, controllers) have been set, and there are no user-adjustable parts.
The lighting in the library does not turn on.
Please adjust the hinge on the door and the distance between the door lock and the library body. (The adjustment complex degree should not be too large, otherwise the door opening and closing will be very inflexible.) Regularly check whether the power supply voltage is normal (three-phase four-wire), check whether the rotation of the condenser of the cold storage and the blades of the air cooler is correct, and adjust the rotation of the fan by adjusting the phase sequence of the power supply. Check whether the protection function of the main power switch is normal and effective (there should be a test button to check the protection function on the main switch).
Evaporator turning while compressor not working
heck whether the pressure controller is damaged, check whether the AC contactor is damaged, check whether the refrigeration system is blocked by ice or dirty, and check whether the main power supply is normal. Please operate the above inspection by personnel who have relevant experience or are familiar with the working conditions of the cold storage.
Door is not closed tightly.
Please check whether the drain pipe of the air cooler is blocked or has dirt.