Doc. # 01
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04
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033A
1)
Verify that vacuum pump is running.
2)
Examine the rubber blanket for holes or cuts.
3)
Check that the holes in the back left screen stop
is not blocked. Turn on the pump and verify that
there is vacuum through the left stop.
4)
Check that the clear tube protruding through left
side of cabinet wall is unobstructed. This is the
vacuum pump exhaust.
5)
Verify that the back glass seal is not damaged.
If it is not try tightening the front cams just
slightly. If this does not work, pull the glass away
and inspect the seal, then reseat the glass
squarely against the back seal and retighten the
front cams.
6)
There is a foam seal around the perimeter of the
lid between the rubber blanket and lid frame.
With the lid locked down, check that the lid seal
and blanket is contacting the glass at all four
sides. If this seal is not contacting the glass it
will be necessary to adjust the lid lower.
Proceed as follows (pictures below for
reference).
a)
Remove both Lid Lifting Cylinders from their
upper mounting stud. Carefully lower the lid.
b)
Rear Seal Adjustment
.
Start with the lid
down and locked.
Using a 1/2" wrench,
loosen the top nut 1/2 turn then tighten the
bottom nut 1/2 turn. This will adjust the lid
down .025". Do this to both sides until
vacuum seal is achieved
c)
Front Lid Adjustment.
Using a 9/16
wrench, loosen (2) bolts at each front corner
about 1/8 of a turn. Using a piece of wood
and a hammer, tap on the top bolt head
slightly to move the bearing down. Be
careful to avoid moving it too much. For
reference, measure from the top of the
bearing to the bottom of the lid when closed,
do not adjust more than 1/16 of an inch.
Retighten all fasteners.
7)
Contact Vastex for technical support if these
steps fail to resolve the problem.
Troubleshooting
Rear Lid Adjustment
Rear Lid Adjustment Nuts
Loosen 1/8 turn for adjustment
Front Lid Adjustment
(All models)
Loss of Vacuum
This can be caused by several problems. Check the
following items in order listed.
Pg. 10
