MEDIAJET – Operating instructions V09 Maintenance
51
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5.3 Leak test
It is recommended to perform a leak test about every 3 months or when dosing
errors occur. A leak test will reveal worn or defect tubing or pumphead.
Procedure:
1 Load a silicone tubing in the pumphead.
2 Position the dispensing end of the tubing below the pumphead height into a
container.
3 Put the aspiration tube in liquid and keep the PRIME key pressed to fill the
tubing completely without any bubbles.
4 Lift the aspirating end of the tubing as high as possible above the
pumphead. The system is tight, if the liquid level do not decrease and no
liquid flow out of the lower dispensing end.
If the system is leaking, you have to check whether the tubing or the pumphead
is worn:
Repeat the leak test with a new tubing (only use original INTEGRA tubings, see
“7.3
Consumables” on page 60).
• If system is tight, the tubing was worn and the problem is solved.
• If the system is still leaking, the pumphead is worn (e.g. lever loose,
mechanical play) and need to be replaced, see “7.1
General accessories” on
page 58.
ASSISTANCE
Work around until a new pumphead is available: Put a rubber band (5 to 8 mm
wide) around the pumphead to help holding it fully closed during operation.
Repeat the leak test to confirm that the work around works.
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