Williamson 350 VSL User manual

www.wmcpumps.com [phone]
Williamson Manufacturing Co Ltd
Unit 5, Lady Bee Industrial Estate
Albion Street
Southwick
West Sussex BN42 4EP UK
Email: [e-mail]
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.
350 VSL Operator Manual
SAFETY, CAUTIONS AND WARNINGS
INSTALLATION 1-2
350 VSL CONTROLS AND CONNECTORS
AND MATERIALS OF CONSTRUCTION 3
350 VSL SERIES PUMP SPECIFICATIONS 4
OPERATION / TUBING INSTALLATION
OPTION AND FLOW RATES 5-6
FUSE REPLACEMENT / ROLLER
ASSEMBLY REPLACEMENT PROCEDURES 7
TROUBLESHOOTING / REPLACEMENT
PARTS 8
Table of contents.
Note: Every precaution for accuracy has been taken in the preparation of this manual, however, Williamson
Manufacturing Co Ltd. neither assumes responsibility for any omissions or errors that may appear nor assumes
liability for any damages that result from the use of the products in accordance with the information contained in
this manual.
POTENTIAL RISK OF ELECTRIC SHOCK
DO NOT use DC motor pump with a damaged or altered power cord or power supply. Contact the
factory or an authorized service facility for repair.
Disconnect power cord before moving or disposing of pump.
CAUTION – This Pump Has Been Evaluated with Water Only.
WARNING - Risk of electric shock – This pump is supplied with a grounding conductor and grounding-
type attachment plug. To reduce the risk of electric shock, be certain that it is connected only to a
properly grounded, grounding-type receptacle.
Before installing or servicing the pump, read the pump manual for all safety information and
complete instructions. Installation and Product must adhere to all regulatory and compliance codes
applicable to the area.

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.
Safety, Cautions & Warnings.
When changing flow direction, allow the pump to
come to a complete stop before starting again. Failure to do
so could cause permanent damage to the motor.
Replace the fuse only with one of the same types and rating.
The fuse rating and type are stated on the rear panel.
This Pump Has Been Evaluated for Use With Water Only.
To reduce risk of electric shock, pull plug before servicing this pump.
"WARNING": This equipment must be earthed.
"WARNING": "Risk Of Electric Shock – This Pump Has Not Been Investigated For
Use In Swimming Pool Or Marine Areas."
Installation.
Before use:
· Voltage and frequency of power supply must be the same as shown on unit
specification label.
· The AC power must be Grounded
· WIRING CONNECTIONS: All wiring and electrical connections must comply
with local and national electrical codes.
· Enclosure should be either placed on a dry flat surface or mount enclosure to
wall using wall mounting hardware provided. The ambient temperature should
not exceed 40° C and adequate air flow should be provided for.
· Tubing should be clean and routed so that bend radii are at a minimum four (4) times the tube
diameter.
· Use a tube size of appropriate diameter for the flow rate and viscosity required.
CAUTION: Motor life will be drastically reduced if left in the stalled position for extended periods.
Williamson Manufacturing Co Ltd
Unit 5, Lady Bee Industrial Estate
Albion Street
Southwick
West Sussex BN42 4EP UK
Email: [e-mail]

350 VSL Operator Manual
Controls and Connectors.
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.
Materials of Construction
Enclosure Powder Coated Steel - IP22 rated
Pump Head Polycarbonate; IXEF
Rollers Stainless Steel
Bearings Sealed Stainless Steel Bearings
Materials of Construction.
Williamson Manufacturing Co Ltd
Unit 5, Lady Bee Industrial Estate
Albion Street
Southwick
West Sussex BN42 4EP UK
Email: [e-mail]

Specifications & Description
Model Series 350 VSL
Pump Head 350 Series – 4 Roller
Control Type Variable Speed
Speed Control +/- 2%
Directional Control Bi-directional
Motor Type Brushless DC
Duty Cycle Continuous
Tube Wall Thicknesses Accepted -
Metric 1.6mm (1/16”) & 2.4mm(3/32”)
Tube Bores Accepted – 1.6mm 0.8mm (1/32”) to 7.9mm (5/16”)
Tube Bores Accepted – 2.4mm 0.8mm (1/32”) to 6.4mm (1/46”)
Voltage 100-240V 50/60Hz
Plug type IEC 320-C13
Max Working Pressure 25 psi
Compliance (US and Canada)
UL778
FCC Part 15b Class A
ICES-003, Issue 6: 2016
Compliance (Europe for CE Mark) EN 55014-1:2006/A12009/A2:2011
EN 55014-2:2015
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.
Specifications.
350 VSL Operator Manual
Williamson Manufacturing Co Ltd
Unit 5, Lady Bee Industrial Estate
Albion Street
Southwick
West Sussex BN42 4EP UK
Email: [e-mail]

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.
Before Inserting Tube:
· WARNINGS: Tubing breakage may result in fluid being sprayed from pump. Use appropriate measures to
protect operator and equipment.
· The 350 VSL pump is equipped with a safety switch so that when the front cover is lifted up, the pump
stops. Be sure the Pump System is off before removing or installing tubing. Fingers or loose clothing could
be caught in the pump mechanism.
Tube Inspection:
· Tubing should be inspected periodically for tears, cracks, cuts, abrasions, inability to pull a vacuum,
reduction or loss of flow.
· Tubing life may be extended by periodically repositioning the occluded tubing
Turning Pump On:
· Make sure the speed is set to the minimum setting.
· Push UP on the ON/OFF switch to turn the power ON and run pump clockwise.
· Turn knob clockwise to increase the speed of the pump. The higher the percentage setting, the faster the
speed of the pump.
· Push DOWN on the ON/OFF switch to turn the power ON and run pump counter clockwise.
· The Laboratory Drive Units are self-priming. Verify the suction side tubing is submerged into medium
being pump.
· Prime the tubing for at least 5 minutes. 15 minutes for stable flow.
CAUTION: When changing flow direction, allow the pump
to come to a complete stop before starting again. Failure to
do so could cause permanent damage to the motor.
Operation.
Williamson Manufacturing Co Ltd
Unit 5, Lady Bee Industrial Estate
Albion Street
Southwick
West Sussex BN42 4EP UK
Email: [e-mail]

1. Disconnect the suction and discharge tubing from the pump tubing.
2. Simply lift cover, occlusion will lift and release the tubing.
3. Pull tubing out of pump and replace tubing.
4. Close cover completely
Inspect all tubing regularly and replace if any sign of deterioration
occurs. Always wear safety glasses and protect clothing when
working with chemicals. Pump can run dry without damage.
350 SERIES PUMP HEAD TUBE REPLACEMENT PROCEDURE:
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.
Tube Bore
Model Settings 8mm* 6mm 5mm 3mm 1.6 0.8
350 VSL
Max. 1860 1310 800 380 93 20
Min. 95 66 40 20 5 1
Flow Rates mL/Min
* Limited to 1.6mm wall thickness tubing Flow rates are for guidance only and will be
effected by: Tube material, tolerances, age, back
pressure & fluid viscocity.
350 VSL Operator Manual
Williamson Manufacturing Co Ltd
Unit 5, Lady Bee Industrial Estate
Albion Street
Southwick
West Sussex BN42 4EP UK
Email: [e-mail]

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.
Fuse Replacement Procedure.
Roller Assembly Replacement Procedure.
1. Disconnect power to pump.
2. The fuse holder is located on the back of the case.
3. Pull the fuse tray out as shown in photo below.
4. Remove old fuse and replace with the same catagory & rating fuse.
5. Slide fuse tray back in to lock.
Roller Assembly may be easily changed out for:
· Different tube wall thicknesses (1.6mm vs 2.4 mm)
· Number of Rollers (3, 4 or 6 Rollers Assemblies)
· Pump cleaning
1. Turn power off to the drive unit and lift the pump cover.
2. Using a 1/16” Allan wrench, remove the 2 screws holding the Bearing Bridge to Housing. (Figure 1)
3. Pull Bearing Bridge and locating pins straight out of Housing. Remove thrust washer. (Figure 2)
4. Remove Roller Assembly by pulling and sliding it off the output shaft. (Figure 3)
Figure 1 Figure 2 Figure 3
5. To install new roller assembly, reverse steps 1 through 4.
6. Push new Roller Bracket onto output shaft. (Figure 4)
7. Replace thrush washer. (Figure 5)
8. Push Bearing Bridge, Guide Pins and Bearing back onto output shaft. (Figure 6)
9. Using an 1/16” Allen head tool, install and tighten the two mounting screws. (Figure 1)
Figure 4 Figure 5 Figure 6
Williamson Manufacturing Co Ltd
Unit 5, Lady Bee Industrial Estate
Albion Street
Southwick
West Sussex BN42 4EP UK
Email: [e-mail]

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: [e-mail]
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.