Watson Marlow Pumps 720DuN User Manual

Contents

Watson Marlow Pumps 720DuN User Manual Manual pdf 78 page image

Watson-Marlow 720DuN User Manual 7825 TroubleshootingIf 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 fuseholder in the centre of the switchplate at the rear ofthe 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 yourdistributor, or Watson-Marlow Ltd, Falmouth TR11 4RU, United Kingdom.