Manual - Formech Compac Mini
27
Vacuum / Pressure System
If the vacuum or pressure appears to be weak or non-existent check the following.
Service / Repair
The possible causes of poor vacuum are:
• The mould baseboard is restricting the vacuum hole in the table.
• NOTE: If the mould baseboard is too soft it may pull down under vacuum and block the vacuum hole.
• The mould is inadequately vented to allow trapped air to be evacuated.
• The table and clamp seals are in poor condition or the table is not locking properly at the top of its travel.
• There are holes drilled in the table.
If all the above points are OK and you can hear the pump running when you switch it on then one of the fol-
lowing 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.
Raise and lock the mould table in the up position.
Take off the table mesh.
If the vacuum gauge reads 20”Hg or higher
that is normal. A lower reading indicates
poor vacuum where attention is required.
Turn the vacuum on and place your finger
over the vacuum hole. Check the reading you
get on the vacuum gauge.
