Kval 979-2, System Reference Manual

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Troubleshooting
58
979-2
Troubleshooting the Air Cylinders
Most cylinders have an extend and retract port. To adjust the extend motion of a cylinder you must
adjust the flow control on the retract port; this regulates the air flow exhausting from the cylinder and
the opposite is true for the retract motion.
1.
Check the air pressure to the machine.
2.
Check the flow controls to see that they are adjusted correctly and to the proper specifications.
3.
Check for any obstructions to the cylinders such as screws or a mis-
placed tool etc. FOLLOW ALL SAFETY GUIDELINES AND
SIGNS DURING THIS PROCESS.
4.
Check the solenoid air valves:
a.
The solenoid valves can be manually operated by pushing
the red manual override button on the end of the valve.
b.
If the valve seems to be leaking, the seals may be dry or contaminated with water or it maybe
that the cylinder “O” rings are damaged and air is passing from one side to the other side of the
cylinder which means the air is exhausting through the solenoid valve. It maybe is necessary to
purchase a rebuild kit or a new cylinder.
c.
If the valve is not receiving an electrical signal, for instructions. It might be necessary to call
in a specialist or check with KVAL customer service at 1-800-553-5825.
5.
If an Air Leak is coming from an exhaust port on the solenoid air bank:
Manual over-
ride button
CAUTION : Once activated, The valve will allow full
pressure to cylinder. Make sure you are clear of all moving
parts.