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11.3 CHECKING THE DISPENSED VOLUME
The transfer vessel should be adjusted so that 3.8g of polymer is dispensed when the dispensing
lever is turned.
Remove the top cap (cap on larger chamber) from the transfer vessel then half fill the chamber with
polymer.
Refit the top cap then remove the bottom cap.
Place a container on the bench then hold the transfer vessel upright over the container.
Turn the dispensing lever until the lever is pointing upwards. This allows the polymer to enter the
dispensing mechanism.
Turn the dispensing lever until the lever is pointing downwards. This will dispense a quantity of
polymer into the container.
Weigh the dispensed polymer and check that it weighs 3.8g +0.1g. If the weight is not correct, the
dispensing mechanism must be adjusted.
11.4 ADJUSTING THE DISPENSED VOLUME
The dispensing mechanism contains a central bore with a bottom screw. The volume of the bore is
adjusted by moving the bottom screw up or down.
If the dispensed weight is too low, rotate the bot-
tom screw clockwise, i.e. screw downwards.
If the dispensed weight is too high, rotate the
bottom screw anticlockwise, i.e. screw upwards.
This adjustment should only be necessary when
the vessel is used for the first time or when the
chip size alters, e.g. when changing suppliers.
If different sizes of polymer chip are used regu-
larly it may be a good idea to have one transfer
vessel for each chip size.
68 PET Plus User Manual
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