Honeywell CS071AE User Manual page 11

Description of Problem
Loss of vacuum seal.
Sheet tears during forming.
TROUBLE-SHOOTING GUIDE
Possible Causes
• Air ejection pressure too low
or not long enough.
• Wrong mold material used
for the required draft angle.
• Undercuts on mold too
severe.
• Seal edge on the mold is
bad.
• Material not holding in the
clamp frames.
• Clamp frames too cold.
• Clamp frames not adjusted
properly or not coming up
through the seal edge of the
mold enough.
• Poor mold design.
• Plastic sheet too hot before
forming.
• Thinner gauges, sheet too
cold.
Possible Corrective Action
• Use mold release in areas that are
locking on.
• Increase or extend air ejection
pressure.
• Add more vacuum holes in
strategic places.
• Change to the proper mold
material.
• Use an appropriate mold release.
• Reduce the size of the undercuts.
• Increase the air eject pressure.
• Remove the part from the mold
earlier in the cooling cycle.
• Put the mold on a hinged frame.
• Put removable parts on the mold
that come off when the part is
being removed from the mold.
• Use mold release where
appropriate.
• Repair seal edge on the mold.
• Repair clamp frames or put pins in
them to grip better.
• Heat clamp frames up before
running parts.
• Adjust the clamp frame properly.
• Consider changing the mold
geometry.
• Change the forming technique.
• Increase the radii on the part.
• Cut down heating cycle.
• Cut down heater temperatures,
especially in specific areas.
• Check for hot spots on sheet.
• Increase heating time.
• Check sheet for uniform
temperature.
96