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Service\Repair Formech FM660
Vacuum / pressure system
If the vacuum or pressure appears to be weak or non-existent check the following.
The mould baseboard is not restricting the vacuum inlet in the drape table.
NOTE: If the mould baseboard is too soft it may pull down under vacuum and block the
vacuum inlet.
The mould is adequately vented to allow trapped air to be evacuated.
The table and clamp seals are in good order and the table is locking properly at the top of its
travel.
There are no holes drilled in the drape table.
The filer box cover is correctly fitted.
If all the above points are OK and you can hear the pump running when you switch it on then one of
the following points will be the cause of the problem. If the pump does not run, refer to the Electrical
trouble shooting section above.
A pipe is loose, damaged or blocked.
The pump filter is blocked
The vacuum\pressure valve is blocked or corroded.
The vacuum pump is blocked or corroded.
If the heater has been left in the forward position, with no plastic in the clamp frame, the table will start
to overheat. The pipe attached to the back of the table will shrink and constrict the passage of air.
Pipes become less flexible over time and may loosen or crack.
Pneumatics (FM660PT version only)
Check oil in lubricator daily.
Providing there is a good filtered regulated and lubricated air supply, using a 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.
Other problems that cylinders and solenoid valves may suffer from are: -
Lack of electrical supply - Check appropriate circuitry.
Solenoid has become open circuit - Replace with new solenoid.
Return mechanism jammed or broken - Dismantle valve to investigate.
Replace if required.
Wet or dirty air supply - Check condition of air compressor and condensate management
system.
Internal leaks within valves & cylinder.
