18 care and maintenance, 19 troubleshooting – Watson-Marlow 323Du User Manual
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Watson-Marlow 323E, 323S, 323U and 323Du User Manual
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18 Care and maintenance
The pump is sealed to IP31 and is suitable for wipe down cleaning. Do not use sol-
vents, mechanical scourers, strong organic acids, or alkali based cleaning solutions.
Remove any tubing, detach the pumphead, and wash the pumphead thoroughly with
a mild solution of detergent in water.
Check moving parts of the rotor from time to time for freedom of movement. Lubri-
cate pivot points and rollers occasionally with Teflon lubricating oil.
The pump has a good, broad chemical resistance to inorganic acids, saline solutions,
alkalis, some hydrocarbons and a large number of oils and greases. It is suitable for
wipe down but not for long term contact with alcohols. The case may be damaged by
contact with strong acids or strong solvents
There are no user serviceable parts inside the pump. The unit should be returned to
Watson-Marlow or its appointed agents or distributors for service.
19 Troubleshooting
If the pump display remains blank when the pump is on, make the following checks:
Check the position of the voltage selector switch at the rear of the pump.
Check the mains power switch at the rear of the pump.
Check that mains power is available to the pump.
Check the fuse in the fuse drawer of the IEC mains power connector at the rear
of the pump.
Check the fuse in the mains power plug if one is present.
If the pump runs but there is little or no flow, make the following checks:
Check that the tube and rotor are in the pumphead.
Check that fluid is supplied to the pump.
Check that the tube is not split or burst.
Check for any kinks or blockages in the lines.
Check that any valves in the lines are open.
Check that the correct wall-thickness tube is being used.
Check direction of rotation.
Check that the rotor is not slipping on the drive shaft.
If trouble persists, technical assistance for this product is available from your
distributor or Watson-Marlow Ltd, Falmouth TR11 4RU, United Kingdom.
E, S, U, Du
E, S, U, Du