9
7 JAW MAINTENANCE AND SERVICE SPARES
Under normal operating conditions it will be necessary to replace certain expendable items that
are readily available from our spares department. Use of non-Star genuine parts or the incorrect
part number can cause damage to the machine and invalidate the warranty.
Before replacing any sealing jaw items ensure the machine is switched off and unplugged.
Replacing consumable items
To gain access to carry out a service on the fixed jaw it is necessary to remove the fixed clamp
jaw. This is done by unscrewing the two Allen bolts that hold it to the sealing jaw, being careful
not to lose the spacer washer.
Barrier Tape: The barrier tape is a brown Teflon coated cloth designed to prevent plastic sticking
to the element ribbon. If this becomes burnt or damaged peel the old tape off, removing any
excess adhesive from the jaws. Take a length of new tape, remove one of the adhesive strips
and stick it to the front of the jaw, remove the other adhesive strip and stick to the back of the
jaw. The tape should be applied loosely so it is not in contact with the element ribbon when the
jaws are open.
Element Ribbon: Remove the barrier tape as above. Place the loading pins through the
expansion blocks and holes in either end of the jaw to keep the springs under compression and
loosen the Allen key bolt. Remove the old ribbon. Cut a length of new element ribbon slightly
longer than the jaw and fold one end back on itself by about 5mm. Place this end in one of the
expansion blocks and tighten the Allen bolt. Measure the length of ribbon required to fit into
the other expansion block, cut to length and fold the end back 5mm. Fit in the other expansion
block and tighten the Allen bolt. Remove the loading pins and re-cover with barrier tape. Ensure
on double heat machines that the two elements line up to produce a good seal.
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