Wexxar WF30T, Operation And Service Manual

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WF30T Case Former Troubleshooting & Repairs
- 10-106 -
Table 56: Jaw not moving
Problem Possible Cause Solution
Compressed
air not
connected Connect air supply.
Mechanical
Jam
Clear mechanical jam.
Socket loose Tighten socket.
Open Circuit
Cable broken Replace cable.
Valve head against surface
of mounting bracket Add a washer/spacer between the
mounting bracket and valve base.
Mechanical
interference
of valve head Valve head is being
pressed by other object
Remove object.
Overheating /
Too cold Usual cause is high / low
ambient temperature When ambient temperature is over 40°
or below 0° centigrade.
Auto drain of the filter is not
working; water accumulated
in the cup is not discharged Drain water in the filter cup and fix the
auto drain valve or replace the filter
cup.
Water
Condensation
Too much water in the
air supply Dry the air before it enters the
machine.
10.6.1 Other Typical Pneumatic Issues
Forming head and/or jaw too fast
1. Air pressure regulators set too high
•
Air pressure at machine’s main regulator should be 90 PSI.
•
Air pressure at mast regulator should be 70 PSI.
•
Air pressure at jaw regulator should be 70 PSI.
Valve malfunction: valve spool stuck / does not actuate
1. No power supply
•
Verify that the solenoid valve is connected to a DC 24 V power supply.
2. No setpoint
•
Check the control unit and connection (PLC output).
3. Valve slide stuck
•
Replace servo valve.
Valve malfunction: valve spool oscillates
1. Power supply too low
•
Ensure that the power supply is between 17-30 Volts DC.