vc999 RS420, Maintenance Manual

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TROUBLESHOOTING GUIDE
DIE BOTTOMS
DIES ACTIVATING SLOWLY OR NOT AT ALL (cont’d)
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Check the lifting system lubrication.
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Check the die lift cylinder for damage or air pressure loss.
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Check the air lines to the die lift cylinder for damage or pressure loss.
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If the die lift cylinders are equipped with quick exhausts, check them for proper
function or contamination.
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Check the blue 740 valves in the pneumatic cabinet, V1-V4, for contamination or
possible air pressure loss.
DIE TOPS
WATER LEAKS IN DIE
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Check o-ring between die and utility block
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Check water hose
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Check seal die top, calcium build up in the dies
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Clean and remove calcium deposits
FORMING SYSTEM
WRINKLE IN POCKET/POCKETS NOT FORMED WELL
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Check heating / forming time
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Check heating / forming pressure
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Check filler plates, use only aluminum plates
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Check air line to die for damage
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Check water, water temperature should be 50F-80F(10C-27C)
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Check temperature of supply air, cold air used during air forming can cause poor
package form from premature cooling of the film
DAMAGED POCKETS
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Check radius plate for damage
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Check film thickness and draw depth, use heavier material for deeper pockets
FORMING DIE WHISTLES
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Check 4 mm silicone cord for wear or damage
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Check forming / heating pressure, decrease in pneumatic cabinet
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Decrease forming time
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Check die gap