Chinese
Introduction to common faults
l High temperature at the rotor outlet
l Main motor overload
l Loading / unloading failure of air compressor
l Frequent loading and unloading of air compressor
l Short service life of three-stage filter
High temperature at the rotor outlet
l High ambient temperature
l Poor ventilation
l Dirty or blocked cooler
l Low oil level
l Insufficient oil supply
l Temperature control valve fault
l Cooling fan fault
lTemperature sensor fault
Main motor overload
When the unit starts, tripping may occur due to motor overload that is caused by
l Air valve opening
l Slow release of star contactor
l Minimum pressure valve fault, resulting in main pipe air pressure reflux
l Excessively low overload protection value set
l Power problem
l Excessively low voltage (less than 360V)
l Excessively low actual supply voltage due to thin power line
l Excessively low actual supply voltage and phase loss due to insufficient transformer capacity
Frequent loading and unloading of unit
l Virtual connection of solenoid valve power line
l One-way valve installed at the compressor outlet, thin exhaust pipe
l Small pressure zone set
l Filter blocked
l Fault in refrigerated air dryer
l Small volume of air storage tank
l Unstable user's air consumption
Short service life of three-stage filter - reasons ↓
l Dusty environment
l High ambient humidity
l High exhaust temperature
l Carbon deposition in oil
l Maintenance not timely
l Non-standard maintenance
l Incomplete draining of old oil
l Non-original spare parts, inferior lubricating oil