Watson-Marlow Qdos30 Universal - Manual (Page 66)

Watson-Marlow qdos30 Universal and Universal+ Pump User Manual 66
19 Troubleshooting
If the pump display remains blank when the pump is switched on, make the following
checks:
• Check that mains power is available to the pump.
• Check the fuse in the wall plug if one is present.
If the pump runs but there is little or no flow, make the following checks:
• Check that fluid is supplied to the pump.
• Check for any kinks or blockages in the lines.
• Check that any valves in the lines are open.
19.1 Leak detection
If a leak is detected the pump will display the following message:
Follow the instructions in 20 Pumphead replacement on page 56 to replace your
pumphead.
If this message is repeated when power is returned to the pump remove the
pumphead, check that the mounting face is clean and free of debris and refit the
pumphead, taking care to ensure it is correctly orientated with the arrow pointing
upwards.
If the message constantly repeats after several pumphead installations, then there
may be a leak detection sensor failure. Please contact Watson-Marlow for repair.
If you need to bypass a faulty leak detection sensor then you can do so by pressing
IGNORE. If the power is cycled, the leak detection sensor will be switched back on.
If the leak detector is IGNORED then the leak detection off icon will be displayed on
the HOME screens.