Wexxar WF-10T, Operation And Service Manual

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WF-10T Case Former Machine Maintenance
9-86
9.5
Pneumatic Troubleshooting
The pneumatic system of your WEXXAR Case Former is designed to give long, trouble-free
service. Most pneumatic problems can be avoided by ensuring that the machine receives a
supply of clean, dry air, and that the lubricator is properly adjusted, and always filled with the
correct oil. Some common problems are as follows:
Table 28: General Pneumatic Troubleshooting Reference
Problem Possible Cause Remedial Action
Machine
becomes
sluggish in
operation
Inadequate air
supply to the
cylinders
Verify that the regulator set at 90 PSI. Check
the inlet filter and replace it if necessary.
Check settings of flow controls on solenoid
valves. Refer to Section 2.6.1:
‘Compressed
Air’
to ensure that an adequate volume of air
is supplied.
Constant
leakage from
air-cylinder rod
seals
Wear of seal and/or
piston rod bushing
Replace or repair cylinder. Seal kits are
available for all cylinders except for the
disposable type.
Replace solenoid valve, or strip and clean the
solenoid air pilot actuated valve assembly.
Erratic solenoid
valve
Varnish buildup in
solenoid air pilot
actuated assembly
of solenoid valve
Note:
Use only non-abrasive non-chlorinated
solvents such as mineral spirits.
Table 29: Cylinders too slow
WARNING!
PROCEED WITH EXTREME CAUTION. STAY CLEAR OF ALL
MECHANISMS.
Problem Cause Solution
Low Air Pressure
Regulator set point
too low
Verify that the regulator set at 90
PSI. Check the inlet filter and
replace it if necessary. Check
settings of flow controls on solenoid
valves. Refer to Section 2.6.1:
‘Compressed Air’
to ensure that an
adequate volume of air is supplied.
Auto drain of the
Filter-Regulator not
working; water
accumulated in the
cup is not discharged
Drain the 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.
Overheating /
Too cold
Usually caused by
high ambient
temperature
When ambient temperature is
over 40F or below 0°
centigrade.