Watson-Marlow 704U - Manual (Page 2)

Watson-Marlow Bredel E-Manuals
http://www.watson-marlow.it/pdfs-global/m-704su-gb-03.htm[10/07/2012 14:21:14]
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 and rollers 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.
4 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 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.
5 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 dangerous voltages (at mains potential) inside the
pump. If access is required, isolate the pump from the mains
before removing the cover. All Molex connections should be
checked before the case top is replaced.
6 Recommended operating procedures
On variable speed models please note that the mechanical speed variator must not be
adjusted when the motor is not running.
Do site the fluid reservoir above the pump wherever possible.
Do keep delivery and suction lines as short and direct as possible.
Do use gradual sweeping bends in installation pipe work with minimum radius equal to five
times the tubing diameter. Avoid tight pipeline bends, pipe reducers and excessive lengths
of smaller bore tubing than that in the pumphead, particularly in pipelines on the suction
side.
Do ensure that there is always a minimum of one metre of smooth bore flexible tubing
connected to the discharge port of the pumphead. This will help minimise any impulse
losses and pulsation in the pipeline. This is especially important with viscous fluids and