PerkinElmer AVIO 500, Customer Hardware And Service Manual

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Troubleshooting
Pump Problems
Table 6-18. Pump Problems
Problem Possible Cause(s) Corrective Action
Pump rollers stick A spill may have occurred or
the pump head may be worn
and may need to be replaced. Clean the pump head, or replace if
necessary.
Liquid is not
flowing freely The tension on the pump
tubing is too high or low.
Tubing may not be installed
correctly in the channel.
Tubing may be worn.
Use the adjustment screw to adjust the
tension. See Chapter 5, Maintenance
for more information.
Reinstall tubing.
Replace tubing.
Pump tubing is
stretched on one end
and slack on the
other end The tension on the pump
tubing is too tight.
Rollers may be stuck.
Tubing may be worn.
Loosen the adjustment screw.
Check the rollers in the pump head to
see if they roll freely.
Replace tubing.
Pump makes
excessive noise A mechanical problem may
have occurred. Call a PerkinElmer Service
Representative.