Formech IMD508, Installation, Operating And Service Manual

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Manual - Formech IMD508
31
Fault Diagnostics / Maintenance
Before any maintenance work is carried out, both electrical and air supplies must be locked in the
OFF position. Only a qualified electrical technician may work on any parts carrying mains voltage.
That person is responsible for ensuring that the machine is in a safe condition before allowing
services to be restored.
Pneumatics
Providing there is a good filtered regulated lubricated air supply, using good quality airline oil, maintenance
will be minimal. However, a thorough inspection of the machine is necessary from time to time. Any
mechanical damage of pipes and fittings should be dealt with before re-using the machine.
Always lock air supply OFF and bleed out system air before attempting any maintenance of air
system.
Excessive oil dripping or air escaping from a cylinder nose bush usually suggests that the seals require
replacement. Seal kits are available for cylinders. Internal leaks within cylinders and valves are usually
detected when a cylinder creeps into the wrong position or air continually seeps out of the valve exhaust
port. Again seal kits can be provided - please specify cylinder / valve number & model when ordering.
Other problems that solenoid valves may suffer from are:
1) Lack of electrical supply - Check appropriate circuitry
2) Solenoid has become open circuit - Replace with new solenoid
3) Return mechanism jammed or broken - Dismantle valve to investigate. Replace if required.
4) Wet or dirty air supply - Check condition of air compressor and condensate management system.
If the machine is to be not used for more than a few hours the compressed air system should be
de-pressurised.
We strongly recommend fitting a lubricator to the main air supply if the machine is intended to be used for
daily production. This will extend the working life of the pneumatic cylinders and valves.
Adjust the lubricator such that the oil level drop can be noticed over the course of one days full use. Do not
allow excessive amounts of oil to enter the pneumatic system.
Many problems can be caused by water in the pneumatic system.
General lubrication
Bearing housings, slide and rails should be checked periodically, and lubricated when necessary using high
temperature lithium grease.
Clamp & Table Seals
These are regarded as a consumable part and should be replaced when signs of wear become apparent.
(See section dealing with Vacuum)