Watson-Marlow Bredel DuCoNite 25 User manual

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Disc
The disc inserted in the front cover contains the user manual of the models DuCoNite®
25 and DuCoNite®32. The disc also contains a replacement instruction for the pump
hose. This replacement instruction is only for users that are familiar with the
replacement procedures in the user manual.
How to use the disc
1 Put the disc in the disc drive.
2 Close the disc drive.
The disc will start automatically.
3 Wait until the various language versions appear on screen.
4 Select the required language (click 1x with the left mouse button).
The PDF reader program will automatically start and the required user manual
appears on screen.
Shortcuts
In the left margin you will find the various chapters and paragraphs. These can be
accessed directly by clicking on the required chapter or paragraph.
In the text you will find hyperlinks to chapters or paragraphs. These hyperlinks are linked
with the required chapters or paragraphs. By clicking a shortcut the required chapter or
paragraph appears on screen.
System requirements
The program on the disc requires a PC with the following minimum system
requirements:
•Disc drive
The following software must be installed on the PC:
•PDF reader program
•An Internet browser

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Hose pump series
DuCoNite®25 and DuCoNite®32
Manual

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© 2013 Watson-Marlow Bredel B.V.
All rights reserved.
The information provided herein may not be reproduced and/or published in any form,
by print, photoprint, microfilm or any other means whatsoever (electronically or
mechanically) without the prior written authorisation of Watson-Marlow Bredel B.V.
The information provided can be changed without prior notification. Watson-Marlow
Bredel B.V. or one of its representatives cannot be held liable for possible damage
resulting from use of this manual. This is an extensive limitation of the liability which
applies to all damage, inclusive of (without limitation) compensating, direct , indirect or
consequential damage, loss of data, income or profit, loss or damage to possessions
and claims of third parties.
Watson-Marlow Bredel B.V. provides the information in this manual "as is" and does not
take any responsibility and does not give any guarantee on this manual or its content.
Watson-Marlow Bredel B.V. rejects all responsibilities and guarantees. Furthermore,
Watson-Marlow Bredel B.V. does not take responsibility for and does not guarantee that
the information in this manual is accurate, complete or up to date.
Names, trade names, brands, etc. used by Watson-Marlow Bredel B.V. may not, as per
the legislation concerning the protection of trade names, be considered as available.

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CONTENTS
1 GENERAL
1.1 How to use this manual .......................................................................... 8
1.2 Original instructions ................................................................................ 8
1.3 Other supplied documentation ................................................................ 8
1.4 Service and support ................................................................................ 8
1.5 Environment and disposal of waste ........................................................ 9
2SAFETY
2.1 Symbols ................................................................................................ 10
2.2 Intended use ......................................................................................... 10
2.3 Use in potentially explosive atmospheres ............................................. 11
2.4 Use in corrosive atmosphere ................................................................ 11
2.5 Responsibility ........................................................................................ 11
2.6 Qualification of the user ........................................................................ 12
2.7 Regulations and instructions ................................................................. 12
3 WARRANTIES
4 DESCRIPTION
4.1 Identification of the product ................................................................... 14
4.1.1 Identification of the product ....................................................... 14
4.1.2 Identification of the pump .......................................................... 14
4.1.3 Identification of the gearbox ...................................................... 14
4.1.4 Identification of the electric motor .............................................. 15
4.1.5 Identification of the frequency controller .................................... 15
4.1.6 Identification of the pump hose ................................................. 15
4.2 Construction of the pump ...................................................................... 16
4.3 Operation of the pump .......................................................................... 16
4.4 Pump hose ............................................................................................ 18
4.4.1 General ...................................................................................... 18
4.4.2 Hose compression force adjustment (shimming) ...................... 19
4.4.3 Lubrication and cooling ............................................................. 19
4.5 Gearbox ................................................................................................ 19
4.6 Electric motor ........................................................................................ 20
4.7 Motor frequency controller .................................................................... 20
4.8 Available options ................................................................................... 20

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5 INSTALLATION
5.1 Unpacking ............................................................................................ 21
5.2 Inspection ............................................................................................. 21
5.3 Installation conditions ........................................................................... 21
5.3.1 Ambient conditions .................................................................... 21
5.3.2 Set-up ........................................................................................ 21
5.3.3 Pipework ................................................................................... 22
5.3.4 Variable Frequency Drive .......................................................... 23
5.3.5 High Level Control (HLC) .......................................................... 24
5.4 Lifting and moving the pump ................................................................ 25
5.5 Placing the pump .................................................................................. 25
6 COMMISSIONING
6.1 Preparations ......................................................................................... 26
6.2 Commissioning ..................................................................................... 27
7 MAINTENANCE
7.1 General ................................................................................................. 28
7.2 Maintenance and periodic inspections ................................................. 28
7.3 Additional maintenance in potentially explosive environments ............ 30
7.4 Cleaning the pump hose ...................................................................... 30
7.5 Changing lubricant ............................................................................... 31
7.6 Changing oil in gearbox ........................................................................ 32
7.7 Replacing pump hose ........................................................................... 33
7.7.1 Removing pump hose ............................................................... 33
7.7.2 Cleaning the pump head ........................................................... 35
7.7.3 Fitting the pump hose ................................................................ 36
7.8 Exchanging replacement parts ............................................................. 39
7.8.1 Replacing pressing shoes ......................................................... 39
7.8.2 Replacing seal ring and bearings .............................................. 41
7.9 Adjusting hose compression force (shimming) ..................................... 44
7.10 Options ................................................................................................. 47
7.10.1 Revolution counter .................................................................... 47
7.10.2 Drain connection ....................................................................... 48
8 STORAGE
8.1 Hose pump ........................................................................................... 49
8.2 Pump hose ........................................................................................... 49

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9 TROUBLESHOOTING
10 SPECIFICATIONS
10.1 Pump head ........................................................................................... 55
10.1.1 Performance .............................................................................. 55
10.1.2 Materials .................................................................................... 56
10.1.3 Surface treatment ...................................................................... 57
10.1.4 Chemical resistance chart DuCoNite® coating ......................... 57
10.1.5 Lubricant table pump ................................................................. 58
10.1.6 Weights ..................................................................................... 58
10.1.7 Torque figures ........................................................................... 60
10.1.8 Shims specifications .................................................................. 62
10.2 Lubricant table gearbox ........................................................................ 63
10.3 Gearbox ................................................................................................ 64
10.4 Electric motor ........................................................................................ 65
10.5 Frequency controller ............................................................................. 65
10.6 Parts list ................................................................................................ 66
10.6.1 Overview ................................................................................... 66
10.6.2 Cover assembly ......................................................................... 67
10.6.3 Rotor assembly ......................................................................... 68
10.6.4 Pump housing assembly ........................................................... 69
10.6.5 Support assembly ...................................................................... 71
10.6.6 Flange assembly ....................................................................... 72
10.6.7 Revolution counter assembly .................................................... 73
10.6.8 Lubricants .................................................................................. 73
SAFETY FORM
NOTES

GENERAL
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1 GENERAL
1.1 How to use this manual
This manual is intended as a reference book by means
of which qualified users are able to install, commission
and maintain the hose pumps mentioned on the front
cover.
1.2 Original instructions
The original instructions for this manual have been
written in English. Other language versions of this
manual are a translation of the original instructions.
1.3 Other supplied documentation
Documentation of components such as electric motors,
gearboxes, etc. is normally not included in this manual.
But if additional documentation is supplied, you must
follow the instructions in this additional documentation.
1.4 Service and support
For information with respect to specific adjustments,
installation, maintenance or repair jobs which fall
beyond the scope of this manual, contact your Bredel
representative. Make sure you have the following data
at hand:
•Serial number hose pump
•Article number pump hose
•Article number gearbox
•Article number electric motor
•Article number frequency controller
You will find these data on the identification plates or
stickers of the pumphead, the pump hose, the gearbox
and the electric motor. Refer to § 4.1.1.

GENERAL
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1.5 Environment and disposal of waste
Inquire within your local government about the
possibilities for reuse or environment-friendly
processing of packaging materials, (contaminated)
lubricant and oil.
CAUTION
Always observe the local rules and regula-
tions with respect to processing (non reus-
able) parts of the hose pump.

SAFETY
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2SAFETY
2.1 Symbols
In this manual the following symbols are used:
2.2 Intended use
The hose pump is exclusively designed for pumping
suitable products. Every other or further use is not in
conformance with the intended use.
The "Intended use" as laid down in EN 292-1 is "… the
use for which the technical product is intended in
accordance with the specifications of the manufacturer,
inclusive of his indications in the sales brochure". In
case of doubt it is the use which appears to be its
intended use judging from the construction, execution
and function of the product. Observing the instructions
in the user’s documentation also belongs to intended
use.
WARNING
Procedures which, if not carried out with
the necessary care, may result in serious
damage to the hose pump or in serious
bodily harm.
CAUTION
Procedures which, if not carried out with
the necessary care, may result in serious
damage to the hose pump, the surrounding
area or the environment.
Remarks, suggestions and advice.

SAFETY
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Only use the pump in accordance with the intended use
described above. The manufacturer cannot be held
responsible for damage or harm resulting from misuse.
If you want to change the application of your hose
pump, contact your Bredel representative first.
2.3 Use in potentially explosive atmospheres
The pump head and gearbox mentioned in this manual
are suitable for use in a potentially explosive
atmosphere. The pumps mentioned meet the
requirements as stated in the European Directive 94/9/
EC (ATEX Directive).
The pumps belong to:
•Group II Appliances, category 2 GD ck T4
2.4 Use in corrosive atmosphere
The DuCoNite®pump head is coated (both in- and
externally) with a corrosion and wear resistant coating.
This coating withstands highly oxidising and reducing
media. Refer to § 10.1.4 for a specification.
2.5 Responsibility
The manufacturer does not accept any responsibility for
damage or harm caused by not (strictly) observing the
safety regulations and instructions in this manual and
the also supplied documentation, or by negligence
during installation, use, maintenance and repair of the
hose pumps mentioned on the front cover. Depending
on the specific working conditions or accessories used,
additional safety instructions can be required.

SAFETY
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Immediately contact your Bredel representative, if you
noticed a potential danger while using your hose pump.
2.6 Qualification of the user
The installation, use and maintenance of the hose
pump should only be performed by well-trained and
qualified users. Temporary staff and persons in training
may use the hose pump only under the supervision and
responsibility of trained and qualified users.
2.7 Regulations and instructions
•Everyone who works with the hose pump must
be aware of the contents of this manual and
observe the instructions with great care.
•Never change the order of the actions to be
carried out.
•Always store the manual near the hose pump.
WARNING
The user of the hose pump is always fully
responsible for observing the local valid
safety regulations and directives. Observe
these safety regulations and directives
when using the hose pump.

WARRANTIES
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3 WARRANTIES
The manufacturer offers a two-year warranty on proper
workmanship of all parts of the hose pump. Exclusion is
made for normal wear and tear of consumables such as
pump hoses, lubricant, hose clamps, pressing shoes,
ball bearings, wear rings, seals and rubber bushes, or
parts which have been misused or damaged through
negligence.
This manufacturer's warranty is null and void for any
user who has substituted the parts of an alternate
manufacturer into a Watson-Marlow Bredel (hereafter
called Bredel) hose pump.
Damaged parts may be returned to the manufacturer for
warranty analysis. If failure was determined caused by
faulty workmanship, the manufacturer will repair or
replace the faulty component.
The parts must be accompanied by a fully completed
and signed health and safety form, as present in the
back of this manual. The form must be applied to the
outside of the shipping carton.
Parts which have been contaminated or which have
been corroded by chemicals or other substances that
can pose a health risk must be cleaned before they are
returned to the manufacturer. Furthermore, it should be
indicated on the health and safety form, which specific
cleaning procedure has been followed, and it should be
indicated that the equipment has been decontaminated.
The safety form is required at all items, even if the parts
have not been used.
Warranties purporting to be on behalf of Bredel made
by any person, including representatives of Bredel, its
subsidiaries, or its distributors, which do not accord with
the terms of this warranty shall not be binding upon
Bredel. unless expressly approved in writing by a
Director or Manager of Bredel.

DESCRIPTION
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4 DESCRIPTION
4.1 Identification of the product
4.1.1 Identification of the product
The hose pump can be identified based on the
identification plates or stickers on:
A: Pump head
B: Gearbox
C: Electric motor
D: Pump hose
E: Frequency controller (option)
4.1.2 Identification of the pump
The identification plate on the pump head contains the
following data:
A: Pump model
B: Serial number
4.1.3 Identification of the gearbox
The identification plate on the gearbox contains the
following data:
A: Article number
B: Serial number
C: Type number
D: Reduction ratio
E: Number of revolutions per minute

DESCRIPTION
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4.1.4 Identification of the electric motor
The identification plate on the electric motor contains
the following data:
A: Type number
B: Serial number
C: Article number
D: Mains
E: Frequency
F: Speed
G: Power
H: Power factor
I: Current
4.1.5 Identification of the frequency controller
The identification of the Bredel Variable Frequency
Drive (VFD) can be found inside the VFD. Remove the
cover by loosening the two screws. The identification
sticker contains the following data:
A: Article number
B: Serial number
4.1.6 Identification of the pump hose
The identification sticker on the pump hose contains the
following data:
A: Pump type
B: Reorder number
C: Internal diameter
D: Type of material of inner liner
E: Remarks, if applicable
F: Maximum permissible working pressure
G: Production code

DESCRIPTION
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4.2 Construction of the pump
A: Cover
B: Rotor
C: Pressing shoes
D: Pump hose
E: Pump housing
F: Support
G: Gearbox
H: Electric motor
I: Frequency controller (option)
J: Adapter without motor (option)
4.3 Operation of the pump
The heart of the pump head consists of a specially
constructed pump hose (A) which lies contorted against
the inside of the pump housing (B). Both ends of the

DESCRIPTION
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hose are connected to the suction and discharge lines
by means of a flange construction (C). A bearing-
mounted rotor (D) with two facing pressing shoes (E) is
in the center of the pump head.
In phase 1 the lower pressing shoe compresses the
pump hose by the rotational movement of the rotor,
forcing the fluid through the hose. As soon as the
pressing shoe has passed, the hose recovers to its
original shape due to the mechanical properties of the
material.
In phase 2 the product is drawn into the hose by the
(continuous) turning motion of the rotor.
In phase 3, the second pressing shoe will subsequently
compress the pump hose. Due to the continuous
rotating movement of the rotor not only new product is
sucked in, but also the already present product is
pressed out by the pressing shoe. When the first
pressing shoe runs from the pump hose, the second
pressing shoe has already closed the pump hose and
the product is prevented from flowing back. This
method of liquid displacement is also known as the
"positive displacement principle".

DESCRIPTION
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4.4 Pump hose
4.4.1 General
A: Outer extruded layer made of natural rubber
B: Four nylon reinforcement layers
C: Inner extruded liner
The pump hose liner material should be chemically
resistant with the product to be pumped. Dependent on
the specific requirements of your application a
corresponding pump hose must be selected. For each
pump model various hose types are available.
The material of the inner liner of the pump hose
determines the hose type. Each hose type is marked by
a unique color code.
The Bredel pump hoses have been carefully machined,
therefore there are minimum tolerances in wall
thickness. It is very important to guarantee the correct
compression of the pump hose, because:
•When the compression is too high, it creates a
too high load of the pump and pump hose,
which may result in a reduction of the life of the
pump hose and bearings.
Hose type Material Color code
NR Natural rubber Purple
NBR Nitrile rubber Yellow
EPDM EPDM Red
CSM CSM Blue
Consult your Bredel representative for
more detailed information about the chemi-
cal and temperature resistance of pump
hoses.

DESCRIPTION
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•When the compression is too low, this will result
in loss of capacity and backflow. Backflow
results in a reduction of the life of the pump
hose.
4.4.2 Hose compression force adjustment
(shimming)
In order to achieve optimal life of the pump hose, the
compression force of the pump hose can be adjusted by
placing a number of shims under the pressing shoes.
The shims (A) are fitted between the rotor (B) and the
pressing shoe (C). The number of shims will vary for
each counterpressure situation.
The paragraph 7.9 describes how to select and install
the shims.
4.4.3 Lubrication and cooling
The pump head, in which the rotor and pump hose can
be found, is filled with Bredel Genuine Hose Lubricant.
This lubricant lubricates the movement between the
hose and the pressing shoes and dissipates the
generated heat via the pump housing and the cover.
The lubricant is food grade. See § 10.1.5 for the
required quantity and NSF registration.
4.5 Gearbox
The hose pump types described in this manual use co-
axial gearbox units.
The gearboxes are fitted with a foot rest. The outgoing
shaft has been fitted with a spline.
Consult your Bredel representative for
lubrication recommendations when operat-
ing the hose pump below 2 rpm.

DESCRIPTION
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4.6 Electric motor
If the electric motor has been standard supplied by the
manufacturer, it is an integrated standardized squirrel-
cage motor. Refer to § 10.4 for specifications. If the
pump is to be used in potentially explosive
atmospheres, contact your Bredel representative.
4.7 Motor frequency controller
Refer to the also supplied documentation of the supplier
and § 10.5. If the pump is to be used in potentially
explosive atmospheres, contact your Bredel
representative.
4.8 Available options
The next options are available for the hose pump:
•Revolution counter
•Drain connection
•Epoxy / titanium pressing shoes and titanium
shims
•Frequency controller
•Pump support for non-standard gearbox types
•Special configuration for use in potentially
explosive atmospheres
WARNING
If the pump is to be used in potentially
explosive atmospheres, contact your
Bredel representative.