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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
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 valve is blocked.
• The vacuum pump is blocked or corroded.
Vacuum / Pressure Troubleshooting (508DT & 508FS)
Raise table in the up position. Turn the vacuum on.
Place your finger over the vacuum
hole and check the reading you get
on the vacuu gauge.
If the vacuum gauge reading of
22”Hg or higher is normal. A lower
reading indicated poor vacuum where
attention is required.
If the vacuum appears to be weak or non-existent check the following:
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