L/S Precision Variable-Speed Drives Operating Manual
5-1
Masterflex
Section 5
Troubleshooting
Symptom
Remedy
Unit will not turn on.
If the unit is plugged into a GFCI protected circuit verify
that the circuit has not been tripped or reset the circuit.
Verify that the unit is plugged into a functioning outlet.
Verify that the power cord is firmly attached to the unit.
Verify that the fuse for the incoming voltage is not
blown (located in the slot next to the power cord).
Unit will turn on
Check the tubing. Tubing should be snug, but not tight,
but pump will not spin.
against the rollers.
Verify that the mode EXT/INT is set correctly.
Error XX is displayed on the screen.
Err's 3 & 10, check pump for obstructions, all other Errs
return unit for repair.
Unit will turn on but display would
Verify that the incoming voltage meets the required
dim and pump will not spin.
minimum of 90Vrms.
Unit vibrates excessively when
Check that the tubing was loaded properly.
pump is running.
Unit will turn on, display shows ready, Check that OHS (Open Head Sensor) cable
drive will not run after pressing start.
on Pump Head is plugged into drive.
Troubleshooting
Chart
