350 VSL Operator Manual
www.wmcpumps.com
The Williamson Manufacturing Company Ltd provides no
warranty on usage of pumps. We recommend that life tests be carried out
prior to use. This information is given in good faith and believed to be correct
at the time of publishing. The Williamson Manufacturing Company Ltd
cannot accept responsibility for inaccuracy or any errors contained herein.
Copyright the Williamson Manufacturing Company Ltd 2008.
Williamson Manufacturing Co Ltd
Unit 5, Lady Bee Industrial Estate
Albion Street
Southwick
West Sussex BN42 4EP UK
Email: sales@williamsonpumps.co.uk
PROBLEM POSSIBLE CAUSE SOLUTION
Fluid Leaking
Pump tube worn Replace tubing
Excessive back pressure Ensure system pressuredoes
not exceed pressure rating
Tube connections not tight Ensure tubing connections are
properly connected
Tube Life Shortened
Roller bracket assembly worn
out
Replace roller bracket
assembly
Check tubing is compatible
with roller size. Tubing should
be snug but not tight against
the rollers
Verify that the correct roller
assembly is being used for the
correct tube wall thickness
Fluid is not compatible with
tubing material
Check fluid to tube material
compatibility
Pump will not start
Blown fuse Check for blown fuse & replace
if necessary
No Supply Verify that the unit is plugged
into a functioning socket
IEC plug loose connection Verify the power cord is firmly
attached to IEC receptacle
Gearbox assembly worn Replace unit
Unit is on but pump will not
turn
Check tubing is compatible
with roller size. Tubing should
be snug but not tight against
the rollers
Verify that the correct roller
assembly is being used for the
correct tube wall thickness
Pump runs but does not meet
rated flow
Pump tube worn Replace tubing
Gearbox assembly worn Replace unit
Fluid viscosity too high Reduce viscocity
Pumping height is too high Reduce pumping height
Trouble Shooting.
