Rainin Pipetman F Series Manual

Contents

Rainin Pipetman F Series Manual Manual pdf 9 page image

7Troubleshooting and RepairsPipetman pipettes provide exceptional performance andlong-term service. Use these procedures in case of phys-ical or chemical damage.Sample SplashIn case of suspected accidental entry of liquids into thePipetman mechanism:1. Remove the tip ejector by pulling the plastic collar.2. Unscrew the shaft coupling holding the shaft to thepipette body.3. Holding Pipetman upside down, remove the shaftand inspect the seal assembly and piston for contam-ination. Clean with distilled water or IPA if contami-nant is still wet and corrosion is evident. Dry with alint-free tissue and reassemble after inspecting theinterior of the shaft for contaminant.4. If staining and/or corrosion of the piston is evident(due to previously dried sample material), do not usethe instrument. Return to Rainin for service.Note: Never grease any Pipetman components(with the exception of the grease seal on modelsF-5001 to 10ML prior to serial number N05803D.)Leaks, Inaccuracy, Abnormal StrokePossible causes:1. Loosened shaft. Tighten coupling by hand.2. Split or cracked shaft. Remove the tip ejector andinspect the shaft for fracture or split end. Replace theshaft if necessary. If the shaft was dropped, remove itand the seal assembly to see if the piston is bent. Ifso, return the instrument for service.3. Ejector interferes with tips. If there is no gap be-tween the tip and the end of the ejector arm, then thetip ejector is loose. Refer to the photos for properrepositioning of the ejector arm.4. Worn seal and/or O-ring. Dismantle your Pipetmanas described in “Sample Splash”. Replace the sealand O-ring if necessary, referring to the appropriateexploded view on pages 10-11.5. All models have a polyethylene seal and rubber O-ring. Replacement is easy – just pull off the old sealand O-ring and position the new seal and O-ring onthe piston in the orientation shown in the explodedview. Reassemble Pipetman-F.