North Ridge Pumps Hose pump Series User manual

Product Specification Sheet
X-Cel House, Chrysalis Way, Langley Bridge, Eastwood, Nottinghamshire NG16 3RY
Tel: [phone] | Email: [email protected] | Website: www.northridgepumps.com
Hose pump series
Bredel 25 and Bredel 32
Manual

5
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 Responsibility ........................................................................................ 11
2.5 Qualification of the user ........................................................................ 12
2.6 Regulations and instructions ................................................................. 12
3 WARRANTY CONDITIONS
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 .......................................................................... 17
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
5 INSTALLATION
5.1 Unpacking ............................................................................................. 21

6
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 Frequency controller ................................................................. 23
5.4 Lifting and moving the pump ................................................................ 24
5.5 Placing the pump .................................................................................. 24
6 COMMISSIONING
6.1 Preparations ......................................................................................... 25
6.2 Commissioning ..................................................................................... 26
7 MAINTENANCE
7.1 General ................................................................................................. 27
7.2 Maintenance and periodic inspections ................................................. 27
7.3 Cleaning the pump hose ...................................................................... 29
7.4 Changing lubricant ............................................................................... 29
7.5 Changing oil in gearbox ........................................................................ 31
7.6 Replacing pump hose ........................................................................... 31
7.6.1 Removing pump hose ............................................................... 31
7.6.2 Cleaning the pump head ........................................................... 34
7.6.3 Fitting the pump hose ................................................................ 34
7.7 Exchanging replacement parts ............................................................. 37
7.7.1 Replacing pressing shoes ......................................................... 37
7.7.2 Replacing seal ring, bearings and wear ring ............................. 39
7.8 Adjusting hose compression force (shimming) ..................................... 43
7.9 Fitting options ....................................................................................... 45
7.9.1 Fitting a high-level float switch .................................................. 45
7.9.2 Fitting a high and low level float switch ..................................... 47
7.9.3 Replacing the revolution counter ............................................... 48
8 STORAGE
8.1 Hose pump ........................................................................................... 50
8.2 Pump hose ........................................................................................... 50
9 TROUBLESHOOTING
10 SPECIFICATIONS
10.1 Pump head ........................................................................................... 56

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10.1.1 Performance .............................................................................. 56
10.1.2 Materials .................................................................................... 57
10.1.3 Surface treatment ...................................................................... 58
10.1.4 Lubricant table pump ................................................................. 58
10.1.5 Weights ..................................................................................... 59
10.1.6 Torque figures ........................................................................... 60
10.1.7 Shims specifications .................................................................. 61
10.2 Lubricant table gearbox ........................................................................ 62
10.3 Gearbox ................................................................................................ 63
10.4 Electric motor ........................................................................................ 63
10.5 Frequency controller ............................................................................. 64
10.6 Parts list ................................................................................................ 65
10.6.1 Overview ................................................................................... 65
10.6.2 Cover assembly ......................................................................... 66
10.6.3 Rotor assembly ......................................................................... 67
10.6.4 Pump housing assembly ........................................................... 68
10.6.5 Support assembly ...................................................................... 69
10.6.6 Flange assembly ....................................................................... 70
10.6.7 Revolution counter assembly .................................................... 71
10.6.8 Lubricant .................................................................................... 71

GENERAL
8
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 the motor and
the Variable Frequency Drive (VFD) is normally not
included in this manual. However, 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
9
1.5 Environment and disposal of waste
Enquire 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
10
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
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.
WARNING
Procedures, remarks, suggestions or
advice which refer to use in potentially
explosive atmospheres in accordance with
the ATEX Directive 94/9/EC.

SAFETY
11
and function of the product. Observing the instructions
in the user's documentation also belongs to intended
use.
Only use the pump in conformance with the intended
use described above. The manufacturer cannot be held
responsible for damage or harm resulting from use that
is not in conformance with the intended use. 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 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.
Immediately contact your Bredel representative, if you
noticed a potential danger while using your 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.

SAFETY
12
2.5 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.
2.6 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.

WARRANTY CONDITIONS
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3 WARRANTY CONDITIONS
The manufacturer offers a two-year warranty on all
parts of the hose pump. This means that all parts will be
repaired or replaced free of charge, with the exception
of consumables, such as pump hoses, hose clamps,
ball bearings, wear rings, and seals, or parts which
have been misused or have been intentionally
damaged.
If parts are used that are not Watson-Marlow Bredel
B.V. (hereafter called Bredel) parts, every warranty
becomes void.
Damaged parts which are covered by the applicable
warranty conditions can be returned to the
manufacturer. The parts must be accompanied by a
fully filled in and signed safety form, as present in the
back of this manual. The safety 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 which can pose a health
risk, must be cleaned before they are returned to the
manufacturer. Furthermore, it should be indicated on
the 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 type
B: Serial number
C: ATEX code and document number, if applicable
D: Year of manufacture
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
15
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
16
4.2 Construction of the pump
A: Pump hose
B: Pump housing
C: Rotor
D: Pressing shoes
E: Cover
F: Support
G: Gearbox
H: Electric motor
I: Adapter without motor (option)
J: Frequency controller (option)

DESCRIPTION
17
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
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 centre 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 colour 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.
•When the compression is too low, this will result
in loss of yield and backflow. Backflow results in
a reduction of the life of the pump hose.
Hose type Material Colour 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
19
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 7.8 describes how to select and install
the shims.
4.4.3 Lubrication and cooling
The pumphead, 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 § 10.1.4 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
20
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 following options are available for the hose pump:
•High (lubricant) level float switch
•Low (lubricant) level float switch
•Revolution counter
•Epoxy pressing shoes
•Stainless steel 316 flanges, flange brackets,
hose clamps, support and mounting articles
•Pump support for non-standard gearbox types
•Special configuration for use in potentially
explosive atmospheres.
The high level float switch is mandatory for
use in potentially explosive atmospheres.
If the pump is to be used in potentially
explosive atmospheres, contact your
Bredel representative.

INSTALLATION
21
5 INSTALLATION
5.1 Unpacking
When unpacking carefully follow the instructions as
given on the packaging or on the hose pump.
5.2 Inspection
Check that your delivery is correct and check it for any
transport damage. Refer to § 4.1.1. Report any damage
immediately to your Bredel representative.
5.3 Installation conditions
5.3.1 Ambient conditions
Make sure that the hose pump is in an area where the
ambient temperature during operation is not lower than
-20 °C and not higher than +45 °C.
5.3.2 Set-up
•The pump materials and protective layers are
suitable for indoor set-up and a protected
outdoor set-up. Under certain conditions the
pump is suitable for limited outdoor set-up or a
salty or aggressive atmosphere. Consult your
Bredel representative for more information.
•Make sure that the floor surface is horizontal
and has a maximum slope of 10 mm per metre.
•Make sure that there is sufficient room around
the pump to carry out the necessary
maintenance activities.
•Make sure that the room is sufficiently
ventilated, so that the heat developed by the
pump and drive can be discharged. Keep some
distance between the ventilation cover of the
electric motor and wall to enable the supply of
necessary cooling air.

INSTALLATION
22
5.3.3 Pipework
When determining and connecting suction and
discharge lines consider the following points:
•The bore size of the suction and discharge lines
must be larger than the bore size of the pump
hose. For more information consult your Bredel
representative.
•Limit the presence of sharp bends in the
discharge line. Make sure that the radius of the
bent discharge line is as large as possible
(preferably 5S). It is recommended to use Y-
connections instead of T-connections.
•It is recommended to use a minimum of three
quarter (3/4) of the hose length as flexible hose
in the suction or discharge line. In this way you
prevent that connection lines must be removed
when changing a pump hose.
•Keep the delivery and suction lines as short and
direct as possible.
•Select the correct mounting material for flexible
hoses and make sure that the installation is
suited for the design pressure of the system.
•Prevent any possibilities of exceeding the
maximum working pressure of the hose pump.
Refer to § 10.1.1. If necessary fit an
overpressure valve.
•Make sure that the maximum forces on the
flanges are not exceeded. The permissible
loads are given in the following table.
CAUTION
Consider the maximum permissible work-
ing pressure on the discharge side.
Exceeding the maximum working pressure
may lead to serious damage to the pump.

INSTALLATION
23
5.3.4 Frequency controller
If the hose pump is fitted with a Bredel Variable
Frequency Drive (VFD), consider the following points:
•Take precautions so the motor does not re-start
automatically after an unscheduled stop.
In the event of a power or mechanical failure,
the Bredel VFD controls the motor to stop.
When the cause of the failure is removed, the
motor can restart automatically. The automatic
restart is dangerous to certain installations of
the pump.
•All control cables outside the enclosure must be
shielded and have a cross sectional area
between 0.22 and 1 mm2. The shielding must
be connected to earth at both ends.
Maximum permissible loads [N] on the pump
flange
Force Bredel 25 Bredel 32
F1 600 600
F2 500 500
F3 200 200
WARNING
A Bredel VFD that is fitted without the con-
trol switch starts automatically when power
is applied.