ALBIN PUMP ALHP Series Guida
since 1928
ALBIN PUMP
ALHP in-line pulsation dampener
Manual of maintenance
Manual of maintenance
CONTENTS
1 GENERAL 3
1.1 How to use this manual 3
1.2 Service and support 3
1.3 Disposal of waste and the environment 3
1.4 Specications 3
2 SAFETY 3
2.1 Symbol 4
2.2 Intended use 4
2.3 Compliance Pressure Equipment Directive 4
2.4 Use in Potentially Explosive Environments (ATEX) 4
2.5 Responsibility 4
2.6 Qualication of the user 5
2.7 Regulations and instructions 5
3 WARRANTY CONDITIONS 5
4 DESCRIPTION 5
4.1 Identication of the product 5
4.2 Operation of the pulsation dampener 5
4.3 Pulsation dampener hose 6
4.4 Pulsation dampener selection 6
5 INSTALLATION AND COMMISIONING. 7
5.1 Unpacking 7
5.2 Inspection 7
5.3 Installation conditions 7
5.3.1 Ambient conditions 7
5.3.2 Set-up 7
5.4 Lifting and moving the pulsation dampener 7
5.5 Pressurizing the pulsation dampener 8
6 MAINTENANCE 9
6.1 Cleaning the pulsation dampener hose internally 9
6.2 Removing the pulsation dampener hose 9
6.3 Mounting the pulsation dampener hose 10
7 TROUBLESHOOTING 11
8 DIMENSIONS 12
9 TECHNICAL SPECIFICATIONS 13
1 GENERAL
1.1 How to use this manual
This manual is intended as a reference book by means of which qualied users are able to in-
stall, commission, operate and maintain the pulsation dampener mentioned on the front cover.
1.2 Service and support
For information with respect to specic adjustments, installation, maintenance or repair that
fall beyond the scope of this manual, contact your Albin Pump SAS representative. They will
be happy to help. Make sure you have the following information at hand:
• serial number pulsation dampener
• type number pulsation dampener
You will nd this data on the identication plate of the pulsation dampener
1.3 Disposal of waste and the environment
Enquire within your local government about the possibilities for reuse or environment friendly
processing of packaging materials, (contaminated) lubricant and oil.
Always observe the local rules and regulations with respect to processing (non-reus-
able) parts of the pulsation dampener.
1.4 Specications
Pulsation absorption can be as much as 85%.
Best result when the pick of maximum pulsation is +- 6 bar
Minimum pulsation dampening pressure: 2 bar
Maximum dampening pressure on air: 10 bar
Maximum temperature: 70°C
2 SAFETY
2.1 Symbols
In this manual the following symbols are used:
WARNING
Procedures, which, if not carried out with the necessary care, may result in serious dam
age to the pulsation dampener or in serious bodily harm.
CAUTION
Procedures not carried out with the necessary care, may result in serious damage to the
pulsation dampener, the surrounding area or the environment.
Remarks, suggestions and advice.
Procedures, remarks, suggestions or advice which refers to use in potentially explosive
atmospheres (ATEX) in accordance with European guideline 94/9/EC.
2.2 Intended use
The pulsation dampener is exclusively designed for the damping of pulses on the discharge
side of an Albin hose pump. After consultation with your Albin Pump SAS representative, and
only on certain conditions, the pulsation dampener may be used as a pressure relief valve. Ev-
ery other or further use is not in conformance with the intended use1. The manufacturer can-
not be held responsible for any damage or harm resulting from this. The pulsation dampener is
designed in conformance with the current European standards and directives. Only use the pul-
sation dampener in conformance with the intended use described above. If you want to change
the application of your pulsation dampener, contact your Albin Pump SAS representative rst.
2.2.1 The “intended use” as laid down in EN 292-1 is “…the use for which the technical
product is intended in accordance with the specications 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.
2.3 Compliance Pressure Equipment Directive
The pulsation dampeners as mentioned on the front cover are in full compliance with the Euro-
pean Pressure Equipment Directive 97/23/EC.
2.4 Use In Potentially Explosive Environments (ATEX)
The pulsation dampeners ALHP20 to ALHP125 do not fall under the European guideline 94/9/
EC: Equipment for Use in Potentially Explosive Atmospheres (ATEX), if following instructions
are respected:
• Pulsation Dampener to be installed, operated and maintained according this manual,
with respect to earthing (see: 5 Installation and Commissioning), allowable pressures
and temperatures (see: 1.4 Specications).
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 or by negligence during instal-
lation, use, maintenance and repair of the pulsation dampeners mentioned on the front cover.
Depending on the specic working conditions or accessories used, additional safety instruc-
tions can be required.
Immediately contact your Albin pump SAS representative, if you notice a potential danger
while using your pulsation dampener.
WARNING
The user of the pulsation dampener is always fully responsible for observing the local
valid safety regulations and directives. Observe these safety regulations and directives
when using the pulsation dampener.
2.6 Qualication of the user
The installation, operation and maintenance of the pulsation dampener should be carried out
by well trained and qualied users. Temporary staff and persons in training may only use the
pulsation dampener under the supervision and responsibility of well trained and qualied us-
ers.
2.7 Regulations and instructions
• Everyone who works with the pulsation dampener should be aware of the content 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 pulsation dampener.
3 WARRANTY CONDITIONS
The manufacturer offers a two year warranty on all parts of the pulsation dampener. This
means that all parts will be repaired or replaced free of charge with the exception of consum-
ables such as hoses, seals or parts which have been misused or have been intentionally dam-
aged.
If no original Albin parts are used, every warranty claim 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 completed and signed safety form, as
present in the back of this manual. The safety form must be applied to the outside of the ship-
ping 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 specic clean-
ing 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 Albin ump SAS made by any person, including rep-
resentatives of Albin pump SAS., its subsidiaries, or its distributors, which do not accord with
the terms of this warranty shall not be binding upon Albin ump SAS unless expressly approved
in writing by a Director or Manager of Albin ump SAS.
4 DESCRIPTION
4.1 Identication of the product
The pulsation dampener and pulsation dampener hose can be identied by the contents of the
name plate on the pulsation dampener housing and the hose label.
The name plate of the pulsation dampener contains the following information, relevant for
identication: Type name: company name, serial number.
4.2 Operation of the pulsation dampener
The Albin pulsation dampener reduces the pulses created in the discharge line by the hose
pump. This is achieved by means of a thick-walled, reinforced rubber hose which is mounted
in a carbon steel, cylindrical pressure vessel. The hose is surrounded by compressed gas (air or
nitrogen).
Pulses are created when a pressing shoe leaves the pump hose, while rotating. Instantly the
volume in the discharge line will increase with the volume of the pressing shoe. This will result
in a pressure drop in the discharge line.
When the discharge pressure drops, the pulsation dampener hose collapses and compensates
for the released volume of the pressing shoe in the discharge line. Hereby the pulse will be
reduced.
Dependant on the application the dampener can reduce the pulse down to 10%. The damp-
ener is most effective above 3 bar discharge pressure. The pulsation dampeners can be applied
up to a operating pressure of 15 bars. The pulsation dampeners are safeguarded for over-pres-
sure by a pressure-relief valve.
4.3 Pulsation dampener hose
The pulsation dampener hose liner material should be chemically resistant to the product to be
pumped. Dependent on the specic requirements of your application, a matching hose should
be selected.
For each pulsation dampener, various hose types are available. The material of the inner liner
of the hose determines the hose type. Each hose type is marked by a unique colour code.
Hose type Material Colour line
NR Natural rubber white
NBR Buna rubber Yellow
EPDM EPDM Red
Consult your Albin representative for hose pumps for more detailed information about the
chemical and temperature resistance of pulsation dampener hoses.
Store the pulsation dampener hose in a cool, dry place and do not subject it to sunlight.
4.4 Pulsation dampener selection
The pulsation dampener types mentioned on the front cover are functional with more than one
type of Albin Pump hose pump type. In the following table the right pulsation dampener can
be selected to match your hose pump: Selection table pump and pulsation dampener
Pulsation dampener type Hose Pump type:
ALHP20 ALHO5, ALH10, ALH15, ALH20
ALHP40 ALH25, ALH32, ALH40, ALHX40
ALHP50 ALH 50, ALH65
ALHP100 ALH100, ALHX80, ALH80
ALHP125 ALH125
5 INSTALLATION AND COMMISIONING
5.1 Unpacking
When unpacking carefully follow the instructions as given on the packaging or on the pulsation
dampener.
5.2 Inspection
Check that your delivery is correct and check it for any transport damage
5.3 Installation conditions
5.3.1 Ambient conditions
Make sure the ambient temperature, during normal operation of the pulsation dampener, does
not fall to below -20°C, and does not exceed +65°C.
5.3.2 Set-up
When installing the pulsation dampener consider the following points:
• The pulsation dampener will not be effective for variable pump speeds or variable dis
charge pressures.
• Limit the presence of sharp bends. Make sure that the radius of the bent discharge line
is as large as possible. It is recommended to use Y-connections instead of T-connec
tions.
• The pulsation dampener will be most effective if it is directly mounted onto the hose
pump. Minimise the distance between pump and pulsation dampener.
• The pulsation dampener may be installed in either the horizontal or vertical position.
• The pulsation dampener must be suitably supported.
If installed in potentially explosive atmospheres properly earth the pulsation dampener
and respect the instructions as mentioned in paragraph: “Use in Potentially Explosive
Environments (ATEX)”
• Avoid, at all times, a pressure higher than the maximum operating pressure.
• Avoid too heavy loads on the anges. The maximum forces are given in the table below:
5.4 Lifting and moving the pulsation dampener
To lift, move and position the pulsation dampener, suitable hoisting belts must be used. The
best place to attach the hoisting belts is immediately behind both anges of the pulsation
dampener. Keep in mind the pulsation dampener’s weight. For weights see also paragraph
“Weights table”.
WARNING
If the pulsation dampener is to be lifted, ensure that all safety regulations for lifting
movements are adhered to and that the lifting is carried out by qualied personnel
only.
5.5 Pressurizing the pulsation dampener
CAUTION
Do not pressurize the pulsation dampener if it is not built into the pipe system. Con
sider the maximum operating pressure. Exceeding the maximum operating pressure may
lead to serious injuries or damage to the pump and the environment.
CAUTION
Consider the lling medium for the pulsation dampener housing – in this case com
pressed air or nitrogen. If in doubt concerning the correct lling medium for your
pulsa tion dampener, contact your Albin Pumps representative for assistance.
Pressurize the vessel to approximately 85% of the actual working pressure of the hose
pump. Then ne-tune the pressure until optimal dampening is reached.
1. Shut the ball valve (pos. 17) on the pulsation dampener.
2. Connect the lling medium to the lling nipple.
3. Apply pressure to the pulsation dampener by the lling medium.
4. Open the ball valve (pos. 17) gently. Filling medium will now enter and pressurize the
vessel. Check the pressure gauge (pos. 20) for the actual pressure inside the vessel.
5. Pressurize the vessel to approximately 85% of the actual working pressure of the hose
pump.
6. When the required pressure is reached, shut off the ball valve (pos. 17). If the vessel is
pressurized over the maximum allowable working pressure, the pressure-relief valve will
open automatically.
7. Leave the pulsation dampener pressurized for at least 20 minutes. If the pressure has
dropped, check the pulsation dampener for any leakage or see paragraph
“Troubleshooting” for solving the problem.
CAUTION
If you want to check the function of the pressure-relief valve, apply pressure to the
vessel just over the maximum working pressure. The valve should automatically open. If
not, do not apply more than 1000 kPa (10 bar) to the vessel, relieve the pressure and
replace the pressure-relief valve.
8. Fine-tune the pulsation dampener, by adjusting the pressure inside the vessel while
the pump is running, to an optimal dampening.
6. MAINTENANCE
During the development of the pulsation dampener, Albin Hose Pumps has once more applied
its reputation in the area of simplicity, reliability, and maintenance-friendliness. However, care-
ful maintenance and, in particular, scrupulous cleaning are essential conditions for problem-
free operation of the pulsation dampener.
• Before carrying out any maintenance to the pulsation dampener, please thoroughly
acquaint yourself with the directives in the paragraph “Safety”.
• Any repair to the pulsation dampener is to be carried out by skilled and authorised
users only.
• After cleaning and maintenance work, do not use the pulsation dampener until all parts
that have been removed, are reinstalled correctly.
WARNING
Release the pressure from the pulsation dampener by means of the ball valve near the
pressure-relief valve, before starting on any work to the pulsation dampener.
WARNING
Protect your hands and face from any dangerous substances when handling or
examining the pulsation dampener hose.
CAUTION
After maintenance has been carried out, and before switching the pump back on,
ensure that all valves present in the pipe work are opened.
6.1 Cleaning the pulsation dampener hose internally
The inside of the pulsation dampener hose is easily cleaned by ushing the pump and pulsa-
tion dampener with clean water. If a cleaning uid is added to the water, it must be checked
that the hose liner material is resistant to that.
With many products to be pumped, it is necessary to clean the pulsation dampener hose
immediately once the pump is stopped, to avoid solidication and hardening of the product
within the hose.
6.2 Removing the pulsation dampener hose
1. Disconnect the electrical supply from the corresponding pump and close any valves to
minimise product loss.
2. Position a tray under the pulsation dampener. This tray must be sufciently large to
collect all liquid products inside the pulsation dampener.
3. Release all pressure from the pulsation dampener using the ball valve (pos. 17).
WARNING
If the pulsation dampener hose is cracked or worn, liquid product to be pumped may
escape via the ball valve (pos. 17). Therefore, take the necessary safety precautions.
4. Support the pulsation dampener in such a way that it cannot fall during disassembly.
5. Remove the mounting bolts from both anges. Lift the pulsation dampener onto a
suitable workbench. Adhere to the instructions for lifting and moving as mentioned in
paragraph “Lifting and moving the pulsation dampener”.
6. Loosen the hose clamps (pos. 8) from both ends.
7. Unscrew the bolts (pos. 11 and 12) from both anges (pos. 9).
8. Unscrew the locknut (pos. 7) on both sides until the compression on the pulsation
dampener hose has relieved.
9. Remove both inserts (pos. 10) from the pulsation dampener hose.
10. Remove both metal rings (pos. 5 + 6), O-rings (pos. 4) and neck-rings (pos. 3)
11. Remove the mounting bolts from both ange supports (pos. 9) together with the inserts
(pos. 10).
12. Remove the pulsation dampener hose from the housing.
6.3 Mounting the pulsation dampener hose
After the pulsation dampener hose has been removed, as described in “Removing / replacing
the pulsation dampener hose”, the (new) hose can be mounted in the pulsation dampener.
CAUTION
If you are mounting a new pulsation dampener hose, and you wish to continue pumping
the same product, ensure that the colour code of the new hose matches the colour code
of the old, used hose.
1. Check all parts to be mounted for any damage and replace when necessary.
2. Grease all metal parts which are not corrosion-protected and O-rings with Molykote®
55M or equivalent.
3. Place one of the collar bushes (pos. 3) in the dampener housing. Install the pulsation
dampener hose (pos. 2). Place the second collar bush (pos. 3).
4. Slide both O-rings (pos. 4) at both ends over the pulsation dampener hose.
5. Place both metal rings (pos. 5 + 6) and hand-tighten both pressing rings (pos. 7).
6. Loosely place the hose clamps (pos. 8) at both ends.
7. Loosely place the anges on both sides (pos. 9) and place the inserts. (pos. 10)
8. Tighten the pressing rings (pos. 7) (see also paragraph “Torque values”).
9. Tighten both anges (pos. 9) using the corresponding bolts and spring washers. (pos. 11
and 12)
10. Lift the pulsation dampener from the work bench and place it back into the pipe
work. Observe the instructions for lifting and moving as mentioned in paragraph “Lifting
and moving the pulsation dampener”. Mount and tighten the mounting bolts to the
anges at both ends.
11. Connect the electrical supply to the hose pump and open all necessary valves.
12. Pressurize the pulsation dampener following the steps in paragraph “Pressurizing the
pulsation dampener”.
13. Tighten both hose clamps (pos. 8) (see also paragraph “Torque values”).
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