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Declaration of conformity
When the tube monitor is used with any Watson-Marlow pump it complies with Low
Voltage Directive 2006/95/EC.
Declaration of incorporation
When this 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.
Watson-Marlow Limited warrants, subject to the conditions below, through either WatsonMarlow 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
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 WatsonMarlow 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 WatsonMarlow Limited unless expressly approved in writing by a Director or Manager of WatsonMarlow Limited.
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 product is unused. If the product has been used, the
fluids that have been in contact with the product and the cleaning procedure must be
specified along with a statement that the equipment has been decontaminated.
Safety
In the interests of safety, this product 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 mains
interface. If access is required, isolate the product from the mains
before removing the cover. All Molex connections should be
checked before the case top is replaced.
Introduction
In the event of a spillage within a pump, fluids normally contained within the tube can
escape. The Watson-Marlow tube monitor will detect all liquids, including oils, paraffin and
other non-conductive fluids, acting as a "watchdog" to shut down the pump in the event of
a spillage.
Installation
Warning This device must not be used in hazardous areas.
All pumps
Place the sensor pad under the pumphead, with the printed side uppermost. Pumpheads
such as the 303D, cassette pumpheads and the 701R have a drain hole under the
pumphead. The pad should be placed directly under this.
Auto-control pumps
Fit the plug from the tube monitor into the auto/remote connection on the rear of the
pump. If other connections are required (Voltage or Current speed control signal,
direction, etc), these may also be made.
On "IP55 Washdown" pumps, ensure that multiple cables going into the auto-plug are
correctly sealed, or that a multicore cable is taken to an IP55 junction box (mounted
close to the pump) and split into the auto-control cable and tube monitor cable.
On auto-control pumps, the tube monitor uses the Run/Stop connection, but an
additional Run/Stop volt-free switch may be wired in parallel for process control. If either
the tube monitor trips or the additional switch closes, the pump will stop.
Ensure the drive is not set in IRS (inverse remote stop) mode.
Manual control and fixed speed pumps
Connect the tube monitor to the input socket of the Mains Interface. Remove the top
cover and ensure that the voltage selector switch is set for the appropriate mains supply
(120V for 100-120V 50/60Hz, 240V for 220-240V 50/60Hz).
Route the mains supply cable through the entry point marked "Mains In" and connect to
the terminal block as shown on the printed diagram. Route the pump mains lead
through the entry point marked "Mains Out" and connect to the terminal block as shown
in the diagram. Replace the cover and secure. Ensure that power is available at the
Mains Interface (an LED is visible through the top cover).
The Mains Interface is rated at 240V, 4A and is suitable for all Watson-Marlow single
phase pumps.
The Mains Interface also incorporates an external "volt free contact" to allow an alarm
system to be initiated if the tube monitor detects a spillage. The connections are clearly
marked on the cover, and the change-over contacts are rated at 1amp, 24V. A suitable
plug for this connection is included.
Operation
When the tube monitor is correctly connected to either an auto-control pump (which is
switched on) or to the Mains Interface, and the sensor pad is in place, an LED will be
illuminated.
The material on which the pad is placed affects the sensitivity of the tube monitor, and the
potentiometer must be adjusted until it will just reset. Ensure that the pad is wiped
completely dry before setting the sensitivity.
If the "Trip" LED is illuminated, press the "Reset" button (hold down for one to two
seconds before releasing). If the Trip LED remains illuminated, reduce the setting on the
"Sensitivity" potentiometer and press Reset again.
If the "Set" LED is illuminated, increase the sensitivity until the tube monitor trips. Reduce
the setting slightly and press Reset.
This Sensitivity control may also be used to determine the amount of liquid required to trip
the pump. By reducing the Sensitivity, more liquid will be needed to land on the Sensor
Pad before the pump stops.
Replacement sensor pads
The Sensor Pad is coated with a resistant Polyester film and should be wiped dry after any
spillage. If, after repeated use, it becomes damaged, a replacement Sensor Pad, complete
with lead and connector, may be ordered.
Replacement pad order code 059.4521.000
To fit the replacement pad, disconnect the tube monitor from the pump or Mains Interface.
Remove the tube monitor cover and disconnect the two-way Molex connection. Unscrew the
gland connection (and locknut). Remove the cable, complete with connector, through the
entry point. Feed the new lead and connector back through the entry and plug into the
PCB. Re tighten the gland and refit the cover securely, ensuring that the three LEDs are
visible through the window.
Watson-Marlow is a registered trademark of Watson-Marlow Limited.
Disclaimer The information contained in this document is believed to be correct but
Watson-Marlow Limited accepts no liability for any errors it contains, and reserves the right
to alter specifications without notice.
Publication history
PB0145gb-02; m-tubemon-gb-02.htm: Watson-Marlow tube monitor
First published 08 02.
Decontamination certificate
In compliance with the UK Health and Safety at Work Act and the Control of Substances
Hazardous to Health Regulations, you are required to declare the substances which have
been in contact with product(s) you return to Watson-Marlow or its subsidiaries or
distributors. Failure to do so will cause delays. Please ensure that you fax us this form and
receive an RGA (Returned Goods Authorisation) before you despatch the product(s). A
copy of this form must be attached to the outside of the packaging containing the
product(s). Please complete a separate decontamination certificate for each product.
You are responsible for cleaning and decontaminating the product(s) before return.