Troubleshooting Guide - Fisherbrand 12867913 Manuel D'utilisation

Troubleshooting Guide

Most problems can be avoided by reading and following the instructions in this operating manual. Below we list some of those
most commonly experienced along with suggestions for solving them. If, however, these should not resolve the issue, or if you have
questions not covered below, please contact Fisher Scientific.
Trouble
Air bubbles appear in discharge nozzle
Barrel does not fill with liquid
Dispensing not possible
Wrong dispense volume
Possible cause
Liquid reservoir is empty
•
Too fast filling action
•
Leaking piston
•
Leaking discharge valve
•
Inlet tube not fitted correctly
•
Blocked dispense nozzle
•
Discharge valve stuck
•
Instrument not calibrated
•
www.eu.fishersci.com/fisherbrand
Solution
Refill reservoir and prime unit
•
Fill and dispense more slowly
•
Clean piston. If problem persists
•
replace piston
Clean unit by flushing throughly.
•
If problem persists, replace the
discharge valve
Connect inlet tube correctly
•
Disassemble the dispense nozzle
•
and flush with cleaning fluid
Clean unit by immersing valve
•
assembly in cleaning fluid. If
problem persists, replace valve
assembly
Follow steps of User Calibration
•
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