17
Maintenance
Follow these recommended cleaning and maintenance instructions to
obtain optimum performance and maximum life from your pump.
If the pump is not going to be used for at least 24 hours,
make sure no solvents are left in the pump. Following
this procedure will extend pump lifetime and prevent
seizing.
Routine maintenance
• Flushthepumpthoroughlywithdistilledorde-ionizedwateraftereachuse.
Store the pump dry.
• Avoidrunningthepumpdryforextendedperiods.Thepumpisself-
priming and will dispel entrapped bubbles when orientated vertically.
• Inspectthepumpforsignsofleakageonaregularbasisandcorrectany
problems immediately. Liquid entering the motor housing could damage
the motor and gear assembly.
Leakagefromthepump’sleakportindicatesexcessivebackpressure
and unreliable pumping action. (See Figure 2 on page 4.)
• Wipeupallspillsonandaroundthepumpimmediately
Routine cleaning
The high temperatures associated with autoclaving will compromise
the pump seals. Therefore, chemical procedures should be employed
to ensure sterility. The pump fluid path can be cleaned with any of the
following cleaning solutions:
• Dilutedetergentwash
• Diluteacidandbasewash
Pump5mLof0.1N NaOH, followed by
5 mL (Model M6) or50mL(ModelM50)ofwater, followed by
5 mL of 0.1N HCl, followed by
10mL(ModelM6)or50mL(ModelM50)ofwater
• Dilutebleachwash:
Pump5mLofa10% bleach solution followed by
10mL(ModelM6)or50mL(ModelM50)ofwater