401U
401u-gb-03.pdf
Declarations
Declaration of
conformity
Declaration of
Incorporation
Responsible person: Christopher Gadsden, Managing Director, Watson-Marlow Limited, Falmouth, Cornwall
TR11 4RU, England. Telephone +44 (0) 1326 370370. Fax +44 (0) 1326 376009.
When this pump unit is used as a stand alone pump it complies with: Machinery
Directive 2006/42/EC, EMC Directive 2004/108/EC.
When this pump unit is to be installed into a machine or is to be assembled with other
machines for installations, it must not be put into service until the relevant machinery
has been declared in conformity with the Machinery Directive 2006/42/EC.
Two year warranty
Watson-Marlow Limited warrants, subject to the conditions below, through either Watson-Marlow Limited, its
subsidiaries, or its authorised distributors, to repair or replace free of charge, including labour, any part of this
product which fails within two years of delivery of the product to the end user. Such failure must have
occurred because of defect in material or workmanship and not as a result of operation of the product other
than in accordance with the instructions given in this manual.
Conditions of and specific exceptions to the above warranty are
• Consumable items such as tubing, rollers and motor brushes are excluded.
• Products must be returned by pre-arrangement carriage paid to Watson-Marlow Limited, its subsidiaries,
or its authorised distributor.
• All repairs or modifications must have been made by Watson-Marlow Limited, its subsidiaries, or its
authorised distributors or with the express permission of Watson-Marlow Limited, its subsidiaries, or its
authorised distributors.
• Products which have been abused, misused, or subjected to malicious or accidental damage or
electrical surge are excluded.
Warranties purporting to be on behalf of Watson-Marlow Limited made by any person, including representatives
of Watson-Marlow Limited, its subsidiaries, or its distributors, which do not accord with the terms of this
warranty shall not be binding upon Watson-Marlow Limited unless expressly approved in writing by a
director or manager of Watson-Marlow Limited.
Information for returning pumps
Equipment which has been contaminated with, or exposed to, body fluids, toxic chemicals or any other
substance hazardous to health must be decontaminated before it is returned to Watson-Marlow Limited or
its distributor.
A certificate included at the rear of these operating instructions, or signed statement, must be attached to the
outside of the shipping carton.
This certificate is required even if the pump is unused. If the pump has been used, the fluids that have been
in contact with the pump and the cleaning procedure must be specified along with a statement that the
equipment has been decontaminated.
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Safety
In the interests of safety, this pump and the tubing selected should only be used by competent, suitably
trained personnel after they have read and understood this manual, and considered any hazard involved.
Any person who is involved in the installation or maintenance of this equipment should be fully competent
to carry out the work. In the UK this person should also be familiar with the Health and Safety at Work
Act 1974.
There are no user serviceable parts inside this pump. The unit should be turned
to Watson-Marlow for service.
Installation
• The 401U/D is suitable for single phase mains electricity supplies only via the 230VAC-15VAC mains
transformer or a 100-240VAC-18VDC mains adaptor. The CW/STOP/CCW front panel potentiometer
should be set in the STOP position before the power supply is connected by inserting the mains
transformer jack plug into the back panel socket.
• Use only the approved 15V Mascot type 810 AC/AC adaptor or the 18VDC CMP SA07H18 AC/DC
adaptor supplied with the pump.
• To ensure correct lubrication of the gearbox, the pump should be run only while its feet are standing on
a horizontal surface. The pump should be positioned to allow a free flow of air around it.
Recommended operating procedures
DO keep delivery and suction lines as short as possible using a minimum number of swept bends.
DO use suction and delivery pipelines with a bore equal to or larger than the bore of the tube fitted in the
pumphead. When pumping viscous fluids, the losses caused by increased friction can be overcome by
using pipe runs with a cross sectional area several times greater than the pumping element.
DO run at a slow speed when pumping viscous fluids.
DO fit an extra length of pump tube in the system to enable tube transfer. This will extend tube life and
minimise the downtime of the pumping circuit.
DO keep the track and rollers clean.
The self-priming nature of peristaltic pumps means valves are not required. Any valves fitted must cause no
restriction to flow in the pumping circuit.
When using Marprene tubing After the first 30 minutes of running, re-tension the tube in the pumphead by
releasing the track latch and pulling the tubing on the delivery side a little. This is to counteract the normal
stretching that occurs with Marprene which can go unnoticed and result in poor tube life.
Tube selection The chemical compatibility list published in the Watson-Marlow catalogue is only a guide.
If in doubt about the compatibility of a tube material and the duty fluid, request a tube sample card for
immersion trials.
Troubleshooting
If the pump fails to operate, make the following checks to determine whether or not servicing is required.
• Check the mains supply is available at the pump (green LED).
• Check the fuse in the mains socket (where fitted).
• Check that the pump is not stalled by incorrect fitting of tubing.
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Manual operation
cwccw cwccw cwccw
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IP21
• Insert the mains transformer jack plug into the round socket on the pump back panel.
EU US UK AU18VDC CMP SA07H18
• Pumps delivered with multi-plug mains adaptor: see pictures above for how to change plugs.
• Switch power on at the mains socket. Power at the pump will be signalled by the illumination of a green
LED on the pump front panel.
• The manual speed control potentiometer has three positions.
Centre position (III) means that
the pump rotor will be stopped
cw position (III) means the rotor
will rotate clockwise at its set speed
ccw position (III) means the rotor
will rotate counter-clockwise at its
set speed.
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cwccw
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cwccw cwccw
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• The speed setting dial is calibrated in proportion of maximum speed from 0-10 which represents a 10:1
speed reduction ratio from the maximum speed of the pump. Turn the control knob clockwise to increase
the speed and counter-clockwise to decrease the speed.
• When changing the direction of flow, turn the ccw<off>cw switch to its central off position until the
pumphead rotor stops; then turn it to the required direction of rotation which will re-start the pump.
• If returning from auto control to manual control, disconnect the process signal from the pump.
In the event of a power failure, the pump will automatically re-start when the power is
returned. This will occur under manual or remote control.
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