Annovi Reverberi AR70BP User manual

MANUALE D’USO E INSTALLAZIONE
INSTRUCTION MANUAL
NOTICE D’UTILISATION ET INSTALLATION
BETRIEBS- UND INSTALLATIONSANLEITUNG
MANUAL DE USO E INSTALACIÓN
AR 70 bp
Istruzioni originali
Original instructions
Notice originale
Originalanleitung
Instrucciones originales
Edizione - Edition - Édition - Ausgabe - Edición: 03/2016
Dati tecnici e prestazioni - Technical and Performance Data - Données techniques et performances -
Technische Daten und Leistungsmerkmale - Datos técnicos y prestaciones
Modello
Model
Modèle
Modell
Modelo
Portata max
Max. ow
Débit max.
Max. Fördermenge
Caudal máx.
Pressione max
Max. pressure
Pression max.
Max. Druck
Presión máx.
N° giri max
Max. rpm
Nbre tours max.
Max. Drehzahl
R.p.m. máx.
Temperatura max
Max. temperature
Température max.
Max. Temperatur
Temperatura máx.
Peso
Weight
Poids
Gewicht
Peso
L/1'
l/min
gpm
U/min
bar psi °C °F kg lb
AR 70 bp 74,1 19,6 20 290 550 60 140 11, 8 26
N° codice manuale
Manual code no.
N° code de la notice
Kode der Betriebs-und
Installationsanleitung
N° código manual
91398

Italiano 3
English 21
Français 39
Deutsch 57
Español 75

English language Use and Installation
21
GENERAL INFORMATION ........................................................................................................................... 22
TECHNICAL INFORMATION....................................................................................................................... 24
SAFETY INFORMATION............................................................................................................................... 27
HANDLING AND TRANSPORT INSTRUCTIONS ................................................................................... 28
INSTALLATION INSTRUCTIONS................................................................................................................ 29
INSTRUCTIONS FOR USE............................................................................................................................ 32
MAINTENANCE INSTRUCTIONS............................................................................................................... 33
TROUBLESHOOTING.................................................................................................................................... 37
WARRANTY CONDITIONS...................................................................................................................................... 95
After-Sales service procedures .................................23
Annexed documentation ............................................23
Checking the ination pressure ...............................35
Checking the oil level....................................................34
Declaration of Incorporation......................................26
Disclaimer ..........................................................................23
Environmental operating limits................................26
General description .......................................................24
General guidelines on water supply
connection ........................................................................30
General safety rules .......................................................27
Glossary..............................................................................23
Inspecting the connections and pipes...................34
Inspecting the Filter.......................................................34
Inspecting the pump mounting ...............................34
Installation.........................................................................29
Installation diagram (guideline)................................31
Intended uses...................................................................25
Lengthy pump lay-os ................................................36
Main components ..........................................................24
Misuses................................................................................25
Mounting the pump .....................................................29
Overall dimensions ........................................................26
Packaging description and unpacking...................28
Preliminary checks .........................................................32
Pump and manufacturer identication .................22
Purpose of the manual .................................................22
Putting the pump back into service........................36
Residual risks ....................................................................25
Safety devices ..................................................................25
Safety recommendations for handling
and lifting...........................................................................28
Safety recommendations for installation..............28
Safety recommendations for maintenance..........33
Safety recommendations for use .............................32
Scrapping the pump......................................................36
Starting and stopping the pump .............................32
Storage................................................................................28
Table of lubricants ..........................................................34
Technical Data..................................................................26
Transport............................................................................28
CONTENTS
INDEX OF CONTENTS

English language Use and Installation
22
1GENERAL INFORMATION
Purpose of the manual
The manufacturer has provided this manual to provide the operating instructions and the criteria to be com-
plied with when installing, using and maintaining the pump identied by designation on the cover.
The manufacturer supplies the original instructions in Italian.
The manufacturer may supply the original instructions in other languages in response to statutory or com-
mercial requirements.
If the pump is sold, the seller must pass on this manual to the new owner along with the appliance.
The instructions are intended for the skilled, suitably trained operators who carry out the installation and rou-
tine maintenance procedures.
Refer to the table of contents for rapid access to the topics covered.
The manufacturer reserves the right to amend the manual without notice, unless the amendments refer to the
pump's level of safety.
The purchaser must ensure that the installation is designed in accordance with the instructions in this manual,
statutory requirements, and the relevant national and local regulations.
The technical instructions in this “Use and Installation Manual” are the property of the manufacturer and must
be treated as condential.
The symbols shown and described below are used to identify safety risks or important information.
Danger - Warning
Identies information or procedures the failure to comply with which may constitute a serious threat
to health and safety.
Caution - Take Care
Identies information or procedures the failure to comply with which may constitute a threat to health
and safety or cause damage.
Information
i
Identies useful and important information or procedures which should be borne in mind.
Pump and manufacturer identication
Data plate
The data plate shown here, containing essential information for safe operation, is axed to every pump.
A) Manufacturer's name and address
B) Model
C) Serial number
D) Maximum delivery rate (l/min)
E) Maximum operating pressure (bar)
F) Maximum rpm
G) Lubricant specications
H)Pump code:
Manufacturer's name and address
Annovi Reverberi Spa
Via Martin Luther King, 3
41122 Modena (MO) - Italy
B H
A FG EDC
D EF
GCBA

English language Use and Installation
23
1GENERAL INFORMATION
After-Sales service procedures
To request after-sales service (in the event of a pump malfunction or failure, etc.) contact your nearest service
centre or the manufacturer.
When requesting after-sales services, always state the pump's data plate data and the type of problem.
Disclaimer
The manufacturer accepts no liability arising from:
- incorrect installation;
- improper use of the pump;
- failure to service the pump;
- unauthorised modications and/or repairs;
- use of non-original spare parts, or parts not specically intended for the model.
Annexed documentation
The following documentation is issued to the Customer together with this manual:
- declaration of incorporation
Glossary
Installer: authorised technician having the prerequisites and the specic skills required for the tasks involved
in the installation of the pump and/or similar machinery and for the performance of the routine maintenance
operations in conditions of safety, independently and without risk.
Operator: authorised person having the prerequisites, skills and information needed for use of the pump or
the machine or plant on which the pump is installed, and for routine maintenance procedures.
Purchaser: individual, organisation or company which has purchased the pump and intends to use it for the
intended purposes.
Repairs: all operations performed to conserve the pump’s eciency and operating characteristics. These pro-
cedures, required in the event of an unexpected malfunction, must only be carried out by a skilled technician.
The information for the use of skilled repair technicians only is provided in the “Repairs Manual”.
Routine maintenance: all operations required to keep the pump in good working order, to ensure a longer
working life and maintain compliance with safety requirements. The manufacturer describes the maintenance
procedures and intervals in this “Use and Installation Manual”.
Training: a phase necessary to transfer to the operators the knowledge needed for the correct, risk-free per-
formance of operations.
Information
i
There may be differences between the illustrations and the pump’s actual conformation,
but any such differences will not affect the clarity of the instructions. If in doubt, request
the necessary explanations from the manufacturer.

English language Use and Installation
24
2
TECHNICAL INFORMATION
General description
The pump is designed and constructed to pump and compress liquids on spraying machines for the protective
treatment of agricultural crops and garden plants.
The pump incorporates radial pistons which actuate the diaphragms by means of an oil cushion. The dia-
phragms are connected to the pistons in their middles by means of plates and secured at the edges between
the cylinder liner and head.
The motion of the piston draws the diaphragm inward (intake) and then outward (delivery). The ow of liquid
is regulated by the intake and delivery valves.
Oil between the pump body and diaphragm serves not only as a lubricant but also as a pressure compensation
medium.
Main components
A) Intake valve
B) Delivery valve
C) Head
D) Piston
E) Pump body
F) Crankshaft
G) Diaphragm
H) Cylinder liner
I) Oil tank
J) Pressure accumulator
F E
D
G
C
A
J
G H
I
B

English language Use and Installation
25
2
TECHNICAL INFORMATION
Intended uses
The pump is designed and constructed for incorporation in plants and machinery (spraying machines for the
protective treatment of agricultural crops and garden plants). All other uses constitute misuse unless ap-
proved by the manufacturer's technical service
The pump must be used in a manner appropriate to its technical data (see “Technical Data”), and must not be
modied or improperly used.
Misuses
Do not put the pump into service until the plant or machinery in which it is incorporated has been declared
compliant with the relevant national and local legal requirements.
Do not use the pump in a potentially explosive atmosphere.
Do not use the pump for ammable, toxic or corrosive liquids or liquids with unsuitable density, especially
seawater, adhesives, bitumens, liqueed gases or solvents of any kind, paints of any kind or liquids containing
solids in suspension, and in all cases do not use with any liquid unless certain that it is compatible with the
materials used in the pump circuit.
Do not draw in liquids at temperatures above 50°C or below 5°C.
Do not use the pump in drinking water supply systems.
Do not use the pump on products for human consumption.
Do not use the pump on pharmaceutical products.
Do not use the pump without rst checking that the intake and delivery circuit pipelines are correctly secured
and free from leaks.
Do not use the pump without the safety devices provided: guards for shafts and drive couplings and suitably
rated relief valve on the delivery circuit.
Do not use the pump to wash or spray: people, animals or delicate items, live electrical equipment or chemicals
whose characteristics are not known.
Safety devices
Danger - Warning
Never tamper with or by-pass the safety devices. Maintain all safe-
ty devices regularly to ensure they all work eciently.
The drawing shows the position of the safety devices mounted on the
machine.
Additional safety devices must be added as necessary during the de-
sign phase (see “Installation information”).
A) Fixed guard: provides protection against accidental contacts with
the drive shaft when in operation.
Residual risks
Even if the safety regulations and information provided in the manual
are complied with, the residual risks described below are still present
during use of the pump.
- High temperature hazard: depending on the temperature of the liquid pumped, the pump may reach high
temperatures when in operation. The designer of the installation must therefore bear this in mind and provide
the appropriate measures and warning signs for sta.
A

English language Use and Installation
26
2
TECHNICAL INFORMATION
Technical Data
The technical and performance data are stated on the cover.
Overall dimensions
The illustrations showing the overall dimensions are provided in the annexes.
Environmental operating limits
The pump operates correctly at an ambient temperature between 5 and 50 °C.
Declaration of Incorporation
The illustration shows a copy of the declaration of incorporation, the original of which is issued by the manu-
facturer together with this manual.
DECLARATION OF INCORPORATION
Directive 2006/42/EC (Annex II B) and subsequent amendments
The Manufacturer
Annovi Reverberi S.p.A.
Via Martin Luther King, 3 - 41122 – Modena – Italia
Declares under its own responsability that the Partly Completed Machinery :
Description : Diaphragm pump
Serial number : XXXX
Year of manufacture : XXXX
Complies with the following essential safety requirements specied in Annex I of Dir. 2006/42/CE :
1.1.1-1.1.2-1.1.3-1.1.5-1.1.6-1.1.7-1.2.1-1.2.2-1.3.1-1.3.2-1.3.3-1.3.4-1.3.6-1.3.7-1.3.8-1.4.1-1.4.2.1-1.4.3-1.5.4-1.5.5-1.5.6-1.5.8-
1.5.9-1.5.13-1.6.1-1.6.3-1.6.4-1.6.5-1.7.1-1.7.2-1.7.3-1.7.4
It declares also that the relevant technical documentation has been compiled in accordance with
the part B of Annex VII and that it undertakes to transmit, in response to a reasoned request by
the national authorities, relevant information about the partly completed machinery in paper or
electronic format.
Prohibiting the put into service of the partly completed machinery until the nal machinery
into which it is to be incorporated has been declared in conformity (where appropriate) with the
provisions of the 2006/42/CE Directive and subsequent amendments.
The following Harmonized Standards have been consulted for the compliance verication :
EN 809 EN ISO 4254-1 EN ISO 4254-6
The person authorized to compile the relevant technical documentation:
Reverberi Ing. Stefano
Managing Director
Modena
07/04/2010
Annovi Reverberi S.p.A. Via Martin Luther King, 3 – 41122 Modena (MO) – Italia
Tel. [phone] – Fax [phone] – E-Mail : [e-mail] – Web : www.annovireverberi.it

English language Use and Installation
27
3SAFETY INFORMATION
General safety rules
Most workplace accidents and injuries are caused by carelessness and failure to comply with common sense
and safety rules.
In most cases, accidents can be avoided by predicting their possible causes and proceeding with the necessary
care and attention.
A careful operator who follows the rules is the best guarantee against accidents.
Before installing and using the pump, the operators and other sta must read and understand the instructions
in the manual provided and the details of the installation design.
Do not tamper with, disarm or bypass the safety devices as this may cause serious threats to health and safety.
Do not release pollutants into the environment.
Dispose of waste in accordance with statutory requirements.
Before performing any procedure, adopt appropriate safety measures in accordance with the relevant statu-
tory occupational safety requirements and comply with the safety regulations in the manual.

English language Use and Installation
28
4
HANDLING AND TRANSPORT INSTRUCTIONS
Safety recommendations for handling and lifting
Before starting the operations, organise the intended working area so that the materials can be lifted
and handled in safety.
Unloading, loading, handling and lifting operations must be carried out by skilled, authorised, speci-
cally trained sta.
During lifting and handling operations, the people not involved in the operations must remain at a safe
distance.
For lifting, use hooks and ropes which are free from damage and appropriate for the load to be lifted.
Packaging description and unpacking
The packaging normally consists of a cardboard box for easy, safe transport.
Depending on the quantity of goods to be shipped and the place of destination, packages may be xed on a
pallet for easier lifting and handling.
Check the weight of the item on the transport documents to allow the use of suitable lifting equipment.
When unpacking, check that all components are present and intact. If items are missing or damaged, contact
the dealer or manufacturer to agree the procedures to be followed.
The packaging material must be disposed of appropriately in accordance with the relevant statutory require-
ments.
Transport
The pump may be shipped by a variety of means of transport (road, rail, sea or air) depending on its destination.
Secure the packaging rmly to the vehicle during transport, to prevent random movement.
Storage
In the event of a lengthy period out of use, place the pump (in its packaging if possible, or otherwise protected)
under cover, protected from the weather.
Do not store in places where the ambient conditions might impair the pump's operating condition over time.
Safety recommendations for installation
Take all possible precautions to allow the pump to be installed in a safe, risk-free manner.
All installation phases must be taken into consideration when designing the machinery or plant in which the
pump is to be installed.
The design must consider all mounting points, the means of transmission of the energy sources, and the pro-
tective and safety devices required by the relevant regulations to prevent the risk of injury.

English language Use and Installation
29
5
INSTALLATION INSTRUCTIONS
Installation
The mechanical connection between the pump and the motive power source may be made by means of a pul-
ley and belt, with a drive shaft, or through a direct anged connection to the motive power source.
The crankshaft may turn in either direction.
The water connection between the pump and the machine circuit must be made using hoses of suitable diam-
eter, in all case no less than that of the pump ttings, securing them to the ttings using good quality clamps.
The intake hose must be coil-reinforced to prevent restrictions.
The machine intake circuit must be tted with a lter having suitable capacity for the pump delivery rate and
must be designed to generate a vacuum of no more than - 0.25 bar. This value can be measured by connecting
a vacuometer to the pump intake tting.
The rated pressure of the delivery hose, ttings and clamps must be no less than the maximum rated pressure
of the pump. Replacing the intake and delivery ttings provided on the pump by the manufacturer with small-
diameter alternatives may reduce the pump's performance and annul the warranty.
Mounting the pump
The pump must be installed on a horizontal surface with no exible components between it and the mounting
surface.
The illustration shows the maximum permitted pump installation angle beyond which proper lubrication of
the crank mechanism is not ensured.
Fix the pump by screwing the pump support onto the base of the machine with suitable screws, tightening
appropriately.
max 5°

English language Use and Installation
30
5
INSTALLATION INSTRUCTIONS
General guidelines on water supply connection
To operate correctly, the diaphragm pump must draw in liquids from containers at atmospheric pressure.
Do not supply the pump with pressurised liquids.
For continuous duty, the pump should not draw in water by gravity from containers with liquid level at heights
above 3 m.
For continuous duty, the pump should not draw in liquids by vacuum from containers with the liquid level
more than 3 m below the pump intake tting and the circuit must consist of hoses of length and diameter ap-
propriate to the pump intake tting (see “Technical Data”), free from restrictions and elbows, and with a lter
of suitable capacity (see “Installation”).
For occasional duty, such as lling water supply tanks, the pump can be operated at a vacuum drawing in liq-
uids from reservoirs having the surface of the liquid up to 5 m below the pump intake tting, for periods of no
more than 15 minutes.
Drawing in liquids from lower levels or for longer times causes cavitation in the pump circuit and re-
duces the lifetime of the diaphragms, valves and mechanical parts.
UN003415-EW
3m (9.8 ft ) m a x 3m (9.8 ft ) m a x
5m (16.4 ft ) m a x
NEGATIVE HEAD
ZERO HEAD ZERO HEAD
POSITIVE HEAD
NEGATIVE HEAD
WARNING!
MAXIMUM OPERATING
TIME 15 MINUTES
VACUOMETER
PUMP

English language Use and Installation
31
5
INSTALLATION INSTRUCTIONS
Installation diagram (guideline)
The following is a simplied illustration of the typical installation layout and is purely guideline.
UN003414-EW
Tank
Agitation
Distributor
Pump
Bar
Intake
lter
Delivery line
lter
Distributor
by-pass
Relief valve
by-pass

English language Use and Installation
32
6
INSTRUCTIONS FOR USE
Safety recommendations for use
Before start-up, the operator must perform the necessary safety checks.
In the event of leaks from the pressurised pipes, stop the pump at once and remove the cause of the
leak.
Do not operate the pump above the limits set by the manufacturer to increase its performance.
Preliminary checks
If the pump has a pressure accumulator, check its level of ination, see “Checking the ination pressure”.
Check the ttings of the hoses and the pump's intake and delivery circuits to prevent restrictions, the intake of
air and leaks of liquid.
Check that any ball valves on the pump or distributor are closed.
Before putting the pump into operation, check that the oil level in the pump tank is between the minimum and
maximum lines marked on the tank.
Before putting the pump into operation, check that the pressure regulator knob is turned fully anticlockwise
and the pressure distributor switching lever is in the by-pass position.
Starting and stopping the pump
To start the pump, proceed as described below.
1. When starting the pump, keep the pressure distributor switching lever in the by-pass position until the
pump has primed.
2. Move the distributor switching lever into the pressure regulation position.
3. Turn the distributor knob clockwise to increase the pressure or anticlockwise to decrease it.
4. During the rst few hours of operation, check that the oil level in the tank remains between the minimum
and maximum limits. If top-ups are required, use oil of the type shown on the pump dataplate.
To stop the pump, proceed as described below.
1. Reduce the pressure by turning the distributor knob anticlockwise
2. Open the by-pass valve to discharge the pressure.
3. Stop the pump.

English language Use and Installation
33
7
MAINTENANCE INSTRUCTIONS
Safety recommendations for maintenance
Before doing any maintenance work, depressurise the water system and isolate the pump from all en-
ergy sources.
When the jobs are done, before restarting the pump, check that no tools, rags or other materials have
been left close to moving parts or in hazardous zones.
Replace any excessively worn components with original parts and use the lubricants recommended by
the manufacturer.
Dispose of the worn-out components and lubricants in accordance with the relevant statutory require-
ments.
Carry out the routine maintenance procedures specied by the manufacturer to keep the pump safe
and performing well.
Scheduled maintenance table
Frequency Component Procedure Reference
Every working day
Filter Inspect lter cartridge See “Inspecting the
lter”
Pump Checking the oil level See “Checking the oil
level”
Connection of pump to power
source (pulley, belt, coupling)
Inspection -
Pump Inspect mounting See “Inspecting the
pump mounting”
Pipes and connections Inspection See “Inspecting the
connections and pipes”
Every 100 working
hours
Pressure accumulator (if in-
stalled)
Check ination pres-
sure
See “Checking the
ination pressure”
Reduction gear (if installed) Check oil See “Checking the oil
level”
Caution - Take Care

English language Use and Installation
34
7
MAINTENANCE INSTRUCTIONS
Table of lubricants
The pump is delivered complete with high-performance synthetic multigrade oil suitable for the intended
ambient conditions (see “Environmental operating limits”).
Inspecting the pump mounting
Check that the pump's xing screws have not become loose.
If necessary, tighten them with the driving torque stated in the installation design.
Inspecting the connections and pipes
- Inspect the connections for leaks.
Leaks can normally be dealt with by tightening the connections properly.
If leaks from the intake pipeline connections are noticed, the seals must be repaired.
- Inspect the hoses.
If the pipes show signs of aging, breakage, swelling, rubbing, etc., they must be replaced.
Inspecting the Filter
- Inspect the lter cartridge.
If the cartridge is fouled, wash it thoroughly to remove the dirt.
If the cartridge is torn or cracked, it must be replaced.
Checking the oil level
- Check the oil with the pump level and cold.
- Check the amount of oil through the level gauge
(A).
- If necessary, top up with oil with the characteris-
tics specied in the “Lubricants table”.
To top up with oil proceed as described below.
1) Unscrew the plug (B) and pour oil (C) in through
the hole until it is halfway up the level gauge (A).
2) Screw on the plug (B).
B
B
A
A
C

English language Use and Installation
35
7
MAINTENANCE INSTRUCTIONS
Checking the ination pressure
If the pump has a pressure accumulator, check its
level of ination, with the pump at a standstill, us-
ing an air gun tted with a pressure gauge. The ac-
cumulator is inated by the manufacturer for use
of the pump at its maximum pressure. For adap-
tation of the accumulator pressure to the working
pressure, refer to the table below.
bar psi bar psi
1-3 15-44 1 15
3-12 44-174 1-3 15-44
12-20 174-290 3-5 44-73
20-50 290-725 5-7 73-102

English language Use and Installation
36
7
MAINTENANCE INSTRUCTIONS
Lengthy pump lay-os
It is important to comply with the recommendations for lay-os in the operator's manual of the machine into
which the pump is incorporated.
For the pump itself, at the end of pumping operations it is essential to ush out the internal circuit by pump-
ing clean water. After this, open the intake circuit to the air and leave the pump in operation until the internal
circuit is completely empty. Following this simple procedure at the end of every operating session will prevent
the retention inside the pump of products which are often corrosive and may damage its hydraulic circuit in
the long-term.
If the pump is laid o during the winter in locations with severe weather conditions, it is very important to ush
out the internal circuit as described above and then draw diluted automotive anti-freeze into the pump. Then
take care to discharge the liquid from the system and the pump in particular; it usually has a specic drain plug.
Putting the pump back into service
Before putting the pump back into service after a long period out of use, check the oil level and the tightness
of the mounting screws.
Scrapping the pump
Used units must be disposed of in compliance with local legislation.

English language Use and Installation
37
8
TROUBLESHOOTING
The information provided is intended to provide guidance how to deal with malfunctions which may occur
during use.
Some of these procedures may be carried out by skilled sta, while others have to be performed at specialised
service centres since they require the use of specic equipment as well as detailed knowledge of repair opera-
tions.
Problem Cause Remedy
The pump does not
prime properly.
Intake circuit not airtight. Tighten, repair or replace hoses
and ttings as necessary.
Distributor switching lever on
“Pressure”setting.
Move distributor switching lever to
“By-pass”setting.
The pump does not require the
required pressure.
Seat and plate of intake and deliv-
ery valves worn. Replace the worn valves.(1)
Nozzles worn or too large in
diameter.
Replace the worn nozzles.
Use nozzles of suitable diameter.
Restriction in intake circuit. Remove the restriction from the
circuit.
Intake lter fouled. Clean the lter cartridge.
Pressure gauge needle wobbles,
pressure throbbing.
Intake circuit not
airtight.
Clean or replace the intake and
delivery valves. (1)
Residual air left inside
pump.
Discharge the air by opening a ball
valve/central unit connected to
the delivery side with the pump in
operation.
Valve plate stuck
to its seat.
Tighten, repair or replace hoses
and ttings as necessary.
Pressure accumulator deated Inate accumulator to the correct
pressure.
Uneven ow of liquid to nozzles. Pressure accumulator deated Inate accumulator to the correct
pressure.
Increase in noise and simultaneous
drop in oil level (pump cavitation).
Restriction in intake circuit. Remove the restriction from the
circuit.
Intake lter fouled. Clean the lter cartridge.
Pump drawing in liquid from too
low a level.
See “Pump Intake Conditions”
section.
(1)Operations which must be carried out at an authorised service centre

English language Use and Installation
38
8
TROUBLESHOOTING
Problem Cause Remedy
Oil on pump body or base.
Oil seal on pump
shaft worn. Replace the worn oil seal. (1)
Oil pressure inside pump too high. Restore correct oil level in tank.
Pump using too much oil (oil
owing from delivery port) or oil
whitish in colour (water/oil emul-
sion in tank).
One or more diaphragms ruptured. Stop the pump at once. Replace
the diaphragms (1)
(1)Operations which must be carried out at an authorised service centre