DA Series
Operation Manual
33
8.3 Setting and Description of Other Protection and Warning
See the introduction given in Section 5.6 and 5.7 of this manual.
8.4 Failure Causes and Troubleshooting
Failure
Cause
Troubleshooting
Startup failure
Fault of control voltage
Check the specification of the control voltage, fuse and
connection cord
Actuation of emergency switch
Check whether the emergency actuates or the contact is
disconnected
Failure of the power supply to
turn on
Check whether the power supply is turned on
Check the power supplies of the motor and controller
Low voltage
The diameter of the wiring is too small / change the
specification of the wiring diameter
The voltage of power supply is too low/ adjust it to the right
voltage
Under-pressure
of the system
The requirement of the system
for air exceeding the capacity of
the compressor
Add air compressor
Poor actuation of inlet valve
Check and maintenance
Leakage of system air
Check and maintain the pipeline
Belt slipping
Adjust the tension of the belt
Inlet filter too dirty
Replace the inlet filter
Controller pressure too low
Check the accuracy of the settings and pressure detector
Draining solenoid valve unable
to close
Check whether the solenoid valve is excited, the valve gets
stuck
And the controller outputs signals (connection cord or relay)
Air
pipeline
obstructed,
the
valve not full opened
Check the pressure of each parts within the air compressor
and remove the obstruction or open the valve
Over-dampness
of the system
Improper
installation
of
the
water drain pipe of the air
compressor pipeline
Modify the improper arrangement of water drain pipe
Poor heat dissipation of the
cooler
The cooler is too dirty and requires cleaning
Air dryer not installed
Air dryer not opened
Install and open the air dryer
Great
pressure
fluctuation
Air
requirements
fluctuating
sharply
Increase the capacity of air reservoir
The scope of set pressure of
empty/ loaded car too large
Change the pressure settings
Excess
of
oil
content
in
the
exhaust
and
great
oil
consumption
Leakage
of
lubricating
oil
System
Check whether the oil lines and oil seals leak or replace the
parts
Oil separator obstructed
Replace the oil separator
Leakage of oil separator
Check the oil separator
Oil return pipeline obstructed
Check all the parts of the oil return pipeline and remove any
foreign matter
The compressor running under
the set pressure
Reduce the air consumption or add air compressor and
adjust the compressor to operate under the nominal
pressure
