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Trouble Shooting of Bottle-Top Dispenser Application

Trouble Shooting of Bottle Top Dispenser Application

Bottle top dispenser maintenance and problem checking is key process for pipetting instruments. Here list 5 mainly problems for dispenser using, caused problem analysis and actions for better use.

Problem 1: Piston difficult to move

  • Possible cause: Formation of crystals, dirty
  • Corrective action:

Stop dispensing immediately

Loose piston by circular motion, but do not disassemble

Follow all cleaning instructions

Problem 2: Filling not possible

  • Possible cause: Volume adjusted to minimum setting

Corrective action: Set to required volume

  • Possible cause: Sticking filling valve

Corrective action:

Clean the filling valve. If necessary replace the valve with sealing washer

Problem 3: Instrument does not dispense liquid

  • Possible cause: Discharge tube closure cap pushed on

Corrective action: Remove closure cap

  • Possible cause: Discharge tube not firmly connected or damaged

Corrective action: Push on the closure cap

Hold the piston in place, and push the original manufacturer‘s discharge tube on firmly. Replace a deformed or damaged discharge tube

Problem 4: Air bubbles in the instrument

  • Possible cause: Reagent with high vapor pressure has been drawn in too quickly

Corrective action:

Slowly draw in reagent

  • Possible cause: Seal not inserted, knurled locking nuts not firmly connected

Corrective action:

Double check that seal is in place, and that the knurled locking nuts at the discharge tube are firmly seated and finger tight

  • Possible cause: Air not expelled from the instrument

Corrective action:

Priming the instrument

  • Possible cause: Filling tube not firmly connected or damaged

Corrective action:

Push the filling tube on firmly. If necessary cut off approx.

1 cm of tube at the upper end and reconnect it or replace filling tube

  • Possible cause: Valves dirty, not firmly installed or damaged

Corrective action:

Cleaning procedure

Tighten the valves using the mounting tool. If necessary, replace the valves and sealing washers

Problem 5: Discharge tube not firmly connected or damaged

  • Possible cause: Valves dirty, not firmly installed or damaged

Corrective action:

Push the original manufacturer‘s tube on firmly

  • Possible cause: Filling tube not firmly connected or damaged

Corrective action:

Cleaning procedure. Push the filling tube on firmly. If this does not suffice, cut off approx

1 cm of tube at the upper end and re-connect it or replace filling tube

  • Possible cause: Valves not firmly installed or damaged

Corrective action:

Clean the instrument. Tighten the valves using the mounting tool, if necessary replace the valves and sealing washers

  • Possible cause: Sticking filling valve

Corrective action:

Clean or replace discharge tube, if necessary

2018-06-15T08:57:49+00:00 January 12th, 2018|