HP10E / HP12E / HP15E / HP20E - Dairy design9. Troubleshooting
9-2 © VEMAG 2013
Fault Cause Remedy
Weight uctuations. Unsuitable double screw.
Double screw and double screw
housing worn.
Insufcient vacuum, vacuum unsta-
ble (vacuum display uctuating).
Deformed feed screw, wrong double
screw set.
Check double screw, use 48 mm
double screw pitch for portioning
small portions.
Measure double screw and double
screw housing for wear with a feeler
gauge. Air gap between screw and
housing max. 0.5 mm.
Close air relief bores in double screw
housing. Check vacuum system.
Check feed screw. Gap between
bottom edge of feed screw and top
edge of housing must be
110 - 120 mm.
Drop in output. Double screw and double screw
housing worn.
Vacuum too low.
Deformed feed screw.
Check double screw and double
screw housing for wear. Measure
air gap between double screw and
double screw housing.
Check vacuum setting. The vacuum
should be set so that there is no
product in the vacuum pot.
Check feed screw. Gap between the
bottom edge of the feed screw and
the top edge of the housing must be
110 - 120 mm.
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