Piusi MA Specification sheet

MA - MP
POMPE PENUMATICHE A MEMBRANA
MANUALE D’USO E MANUTENZIONE
DIAPHRAGM PUMPS
INSTRUCTIONS FOR USE AND MAINTENANCE
IT
EN

37/72
DECLARATION OF CONFORMITY
FOREWORD
INTRODUCTION
PUMP IDENTIFICATION
IDENTIFICATION CODES
PUMP DESCRIPTION
TECHNICAL FEATURES
WARRANTY
SAFETY RULES
TRANSPORT AND POSITIONING
CONNECTING THE PRODUCT CIRCUIT
PNEUMATIC CONNECTION
COMMISSIONING
PRODUCT CIRCUIT MAINTENANCE
P1 CLEANING AND REPLACING BALLS AND BALL SEATS
P2 CLEANING AND REPLACING THE DIAPHRAGMS
AIR CIRCUIT MAINTENANCE
Q1 REPLACING THE COAXIAL EXCHANGER
TROUBLESHOOTING
DECOMMISSIONING
DEMOLITION AND DISPOSAL
A
B
C
D
E
F
G
H
I
L
M
N
O
P
Q
R
S
T
INDEX
DIAPHRAGM PUMPS
EN
MA - MP
INSTRUCTIONS FOR USE AND MAINTENANCE

38/72
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PIUSI MA-MP
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A DECLARATION OF CONFORMITY

39/72
EN
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"   !    )     , /   %  %          #  #     )      %  !   ! *  %    -    & )  -     #   (  %  !   ! &     %    "  # #   , " %  " . #      #  #   #  )  !   -      /   % (     "   
            %  #   ( %   #    # . &         %    %      -  "      "      -    #       - / %  " % %  "      )  %      # !   #  )   *
          "   !           (      0       1   !       #     "   !  #      # " %    0   # &    ! !               #      &      #    &   "     2      #  1  "     #    
"   !    )     1   "  # !       #    "   #    1     + "   #          !   !  *             #     !   !  &    #  !   "   # 1 0     "   #     1    - -  "        "   2    #       #   #
YpUL¿FDWLRQVHWOHVWHVWVQpFHVVDLUHVD¿QG¶pYLWHUWRXWHVLWXDWLRQGHGDQJHUPrPHORLQWDLQHTX¶LOQ¶DSSDUWLHQWSDVDXFRQVWUXFWHXUGHFRQQDvWUHHWGRQWHQDXFXQ
"  #     # !   #  )     1   !         3         )  1  *
 4 5  6  7    - (        8    -       9     .         " %    # " %     #      #   $   (   #         :     $      ;   .             8    < (   " % .         
=   #    .     #               9   !    )  #    .      * 8      :     $   ( #          %      >  " %    #  <      #        /     (   9  ? -   (      8   #  " % 
   " % - ? %    &   (  - < %    " %  >           &   " % /    #      & $           &      " %     5   #         $    #    #    *
    4        @ $             )             !     "   # , "   !  #  "     # 0  @   "  # &        $      #   !   #     A #     "    !    "    "     #    " "     # ,  
"   !    )       "     #          #   -  )   "  "  B      )   )  C !         &     #     !       &      A 0          "  )    # "     # !         # "        # ,   # !    D
)  #   "  #     # !          #     "     # !    (   #  # &  E        # & 0     -  )   "       !     !        & !   "   #  (       & "   #       #    # !   #  )       #   #   # *

40/72
F G H I J K L M N O J H P I G Q N J R G G F N O G S P T G U F G H I J K K G L M N J H P I V G F J M H G K H G W P I N H G H M K S P X O P G H U F G H I J K L L M N J H P Y L Q L F L H L
W M L H Q L H G T L H X O P Z J U F G H I J K Y M [ I F G P X O G H K Q G H Q L N G P
\ ] ] \ ^ _ ` a b a
\ ] ] \ ^ _ ` a b a
F T L X G c O G H G N O G S P T G P I R G F N U T P G M J d T G Q J I I P G H G I N W L H Q G e U T M W L H Q J K Q G G I N L e W M L H Q L Q J G T S L I X P X M T J U J H N c J Q P G
Q L N G P Z G H c L O H N P I N
_ f f ` \ ^ g h i j k _ f f ` \ l ^ m f _ ` k _ f ` \ i _ h \ f \ ` k n g b g o p a n ] ^ \ b
f a l q a q f _
^ a _ f _ r a b \ ] ] a s t u _ k v t w x y k q l z z _ ` _ { p b | k a ] _ } j

41/72
EN
Piusi MA and Piusi MP pumps have been manufactured to the 2006/42/CE, 94/9/CEE
and 99/92/EC directives.
The relevant area criteria are indicated in the EN-60079-10 and EN 1127-1 harmo-
nized European standards.
Therefore, if used according to the instructions contained in this manual, the Piusi
MA and Piusi MP pumps will not represent any risk to the operator. This manual
must be preserved in good condition and/or accompany the machine as reference
for maintenance purposes. The manufacturer rejects any liability for any alteration,
modication, incorrect application or operation not complying with the content of
this manual and that may cause damage to the health and safety of persons, animals
or objects stationing near the pumps.
The Manufacturer trusts you will be able to make full use of the performances of-
fered by Piusi MA and Piusi MP pumps. All the technical values refer to the standard
version of Piusi MA and Piusi MP pumps (please see “TECHNICAL FEATURES”). How-
ever, our continuous search for innovation and improvements in the technological
quality means that some of the features may change without notice. All drawings
and any other representation in the documents supplied with the pump are prop-
erty of the Manufacturer who reserves all rights and FORBIDS distribution to third
parties without his authorization in writing.
THEREFORE REPRODUCTION, EVEN PARTIAL, OF THIS MANUAL, TEXT OR DRAWINGS
ARE STRICTLY FORBIDDEN.
This manual is an integral part of the pump, and represents a SAFETY DEVICE. It
contains important information that will assist the purchaser and his personnel in
installing, using and servicing the pumps in good condition and safety during ser-
vice life. At the head of every chapter an information eld with symbols indicates
the personnel who are authorized to perform the operation described in that page
along with the individual protective devices that must be worn and/or the energetic
state of the pump. Any residual risk that may occur during these operations is high-
lighted by special symbols embedded in the text.
Special symbols are also used to highlight and dierentiate any particular informa-
tion or suggestion concerning safety and correct use of the pumps.
PLEASE CONTACT THE MANUFACTURER’S CUSTOMER ASSISTANCE DEPARTMENT
FOR ANY FURTHER INFORMATION REGARDING THE CONTENTS OF THIS MANUAL.
~      
CAUTION
REMARK
B
C
FOREWORD
INTRODUCTION
this sign warns the personnel involved that failure
to perform the operation described in compliance
with the procedures and prescriptions related to
safety regulations entails residual risks that may
cause damage to health or injuries.
this sign informs involved personnel that failure
to perform the described operation in compliance
with safety regulations may cause damage to the
machine and/or its components hence risks for the
operator and/or the environment.
this sign provides informationregarding thecurrent
operation and its contents are very important.

42/72
Each pump has an identication plate carrying its specication details and materi-
als. Always refer to this data when contacting the manufacturer, dealer or customer
service centers.
Identication code * on the plate against the“TYPE” heading species the composi-
tion and the materials used to build the pump. This data will help ascertain whether
the pump is suitable for the product to be pumped.
D PUMP IDENTIFICATION
COMPULSORY
AND INDIVID-
UAL PROTEC-
TION SIGNS
OPERATOR
INSTALLER AND
MECHANICAL
SERVICEMAN
EXTRAORDI-
NARY PROCE-
DURES
INSTRUCTION
MANUAL
These signs indicate that proper individual pro-
tection must also be used against energetic events
because of the dangers that may arise during the
operation.
The personnel in charge of installing, testing and
servicing the pump must have a suitable technical
knowledge of potentially explosive atmospheres
and of the relevant risks.
removing or altering this identication plate and or
the data it contains is forbidden.
this function entails full knowledge and under-
standing of the information contained in the user
manual issued by the Manufacturer as well as spe-
cic skills related to the sector of use.
This function entails full knowledge and under-
standing of information contained in the user man-
ual issued by the manufacturer, specic expertise in
installation and ordinary maintenance tasks as well
as specic skills related to the sector of use.
Identies operations that can only be performed
by the after-sales service technicians at the Manu-
facturer’s premises.
WARNING
WARNING

43/72
EN
In compliance with the 94/9/CEE standards, the pumps carry the following identi-
cation marks:
II 3/3 GD c IIB T135°C
: safety symbol to Din 40012 attachment A.
II 3/3GD: surface equipment used in areas where the presence of gas, vapors or mists
in addition to clouds of combustible powder in the air is unlikely during normal op-
eration both in external and internal areas and, if it does occur, it will only persist for
a short period (ZONE 2).
c: protection by constructional safety (EN 13463-5).
IIB: Excluding the following products: hydrogen, acetylene, carbon disulphide.
T135°C: Class of admitted temperatures. The processed uid temperature value
must fall within such class range and the user must comply with the instructions
contained in the manual and with the current laws. Furthermore, the user must take
into account the ignition point of the gases, vapors and mists in addition to clouds
of combustible powder in the air existing in the area of use.
MARKINGS AND GENERAL INFORMATION
IDENTIFICATION CODE
D1
E
CODE PUMP Pump
casing
Diaphragm
air side
Diaphragm
uid side
Balls Balls seats O-RINGS
F00208P00 PIUSI MP 130 PP HYTREL PTFE PTFE PP PTFE
F00208A00 PIUSI MA 130 ALU NBR NBR NBR ALU NBR
F00208P20 Piusi MP 140 PP HYTREL PTFE PTFE PP PTFE
F00208P10 Piusi MA 140 PP NBR NBR NBR PP NBR
F00208P30 Piusi MP 180 PP HYTREL PTFE PTFE PP PTFE
F00208A10 Piusi MA 180 ALU NBR NBR NBR PPS-V NBR
F00208P40 Piusi MP 190
PP HYTREL PTFE PTFE PP PTFE
F00208A20 PIUSI MA 190
ALU NBR NBR NBR PPS-V NBR

44/72
Proposed use
Functioning
principles
F PUMP DESCRIPTION
The air-driven Piusi Ma and Piusi MP pumps have been designed
and constructed to pump liquids with an apparent viscosity of
between 1 and 50.000 cps at 20°C that are chemically compat-
ible with the pump’s components. Fluid service temperatures
must range from +3°C to a maximum of 65/95°C according to
the material of the components. Its use is dened by the type
of material used to build the pump, the temperature class and
the type of uid. The maximum temperature allowed for process
uid or powder depends on and/or is declassed by the material
of the pump; if exceeded, respect of the maximum temperature
shown on the marking cannot be guaranteed.
TEMPERATURE CLASSES FOR PUMPS TO BE INSTALLED IN AN
EXPLOSIVE ENVIRONMENT
DEFINITION OF THE CALCULATION DATA:
T4 = ATEX temperature class 135°C
Ta = maximum ambient temperature 40°C;
Tl = maximum temperature for dry use of the pump in the work-
place (50°C);
Δs = safety factor (5°C);
Tf = maximum allowed uid processing temperature
In particular, it is FORBIDDEN to use Piusi MA and Piusi MP
pumps for :
- production of vacuum;
- operation as an on-o valve, as a non-return valve or as a
metering valve
- operation with liquid that is chemically incompatible, with the
materials of construction;
- operation with suspended products whose specic weight is
higher than the liquid’s (for example with water and sand);
- with air pressures, temperatures or product characteristics that
do not comply with the pump’s technical data;
The air introduced behind the diaphragm pushes the product
to the delivery side. At the same time, it uses the shaft to draw
the opposite diaphragm, which causes suction at the intake side.
When complete, the cycle reverses.
Improper use:
use of a Piusi MA and Piusi MP pumps for any other
use other than that previously described in the
chapter entitled “TECHNICAL CHARACTERISTICS”
is to be considered improper use of the pump and
is therefore forbidden by Piusi.
since an endless variety of products and chemical
compositions exist, the user is presumed to have the
best knowledge of their reaction and compatibility
with the pump’s construction materials. Therefore,
before using the pump, all necessary checks and
tests must be performed with great care to avoid
even the slightest risk, an event that the manufac-
turer cannot foresee and for which he cannot be
held responsible.
WARNING
WARNING

45/72
EN
the user must consider the ratio between the pump’s
maximum surface temperature indicated on the
marking and the minimum ignition temperature
of the layers and clouds of powder as shown in the
EN1227-1.
Use of the pump that does not comply with the
instructions indicated in the use and maintenance
manual will cancel the safety and explosion protec-
tion requirements. The risks associated with use of
thepumpsundertheexactconditionsset forthinthe
use and maintenance manual have been analysed,
whilst the analysis of the risks associated with the
interface with other system components must be
carried out by the installer.
the declared capacity of dry negative suction refers
to the intake of uids with a viscosity and specic
weight equal to 1; the performance and duration
of the pump’s membrane depend on the following
factors:
- the uid’s viscosity and specic weight;
- the length and diameter of the suction pipe.
NEGATIVE SUCTION: with uids max. up to 5,000
cps at 18° C
BELOW HEAD SUCTION: with uids up to 50,000
cps at 18° C
ATEX: The user is responsible for classifying the
area of use whilst identication of the equipment
category is the responsibility of the manufacturer.
WARNING
WARNING
WARNING
WARNING
G TECHNICAL FEATURES
The performances data refers to standard versions. “MAX delivery” and “Suction ca-
pacity” values refer to the pumping of water at 18°C with a submersed manifold
(please see g. 1). (1) (2)
g. 1

46/72
G1
G2
TECHNICAL DATA
COMPATIBLE FLUIDS
PUMP m-a A
Ø
B C D E F
Ø
G
Piusi MP 130 PP 1/2” 150 240 234 200 168 8 80
Piusi MA 130 ALU 1/2” 152 240 234 198 168 6,5 85
Piusi MP 140 PP 1” 170 308 274 219 213 6,5 92
Piusi MA 140 ALU 1” 170 303 277 222 213 8 100
Piusi
MP 180 PP 1” 201 329 325 263 228 8 110
Piusi MA 180 ALU 1” 201 314 323 269 213 8 110
Piusi
MP 190 PP 1 1/4” 220 400 387 302 267 8 122
Piusi MA 190 ALU
1 1/4” 225 405 385 305 265 8 125









unit
Piusi MA/MP
130
Piusi MA/MP
140
Piusi MA/MP
180
Piusi MA/MP
190
Intake/delivery ttings inches 1/2” 1” 1” 1 1/4”
Air tting inches 3,8” 3,8” 3,8” 1/2”
Suction capacity whilst dry (1)
(diaphragm PTFE)
mt. 5 6 5 5
Air pressure (MIN-MAX) bar 2 - 7 2 - 7 2 - 7 2 - 7
Fluid max
temp. press.
PP
C° 65 65 65 65
ALU 95 95 95 95
Max capacity(2) water at 18° C with
submersed intake manifold
Lit/min. 50 100 150 220
Net weight - PP
- ALU Kg 3,6
4
5
6,5
7,5
8,2
12
16
Noise (at 5bar with rubber balls) dB (A) 82 82 82 82
Piusi MP
Piusi MA
water, windshield washer, antifreeze and urea
oil, waste oil, diesel

47/72
EN
H
I
WARRANTY
SAFETY RULES
The high quality of Piusi MA and Piusi MP pumps is often conrmed to us by the
end users.
However, should any defect appear, please contact the Manufacturer’s After-Sales
Service, your dealer or the nearest Customer Service Centre twhere you will receive
assistance as quickly as possible. In any case, please provide:
A. Your complete address
B. Pump identication
C. Explosion risk protection class
D. Anomaly description
All Piusi MA and Piusi MP pumps are covered by the following warranty:
1. Twelve months for any faulty mechanical parts. The warranty period starts from
the date of supply.
2. Any fault or anomaly must be reported to the Manufacturer within eight days.
3. Warranty repair will be carried out exclusively at the Manufacturer’s premises.
Transportation charges will be at the client’s expense.
4. Warranty shall not be extended in case of repair or replacement.
5. Faulty parts must be forwarded to the Manufacturer who
reserves the right to test them in this own factory to identify the fault or any external
reason that may have caused it. Should the parts be found not faulty, the Manufac-
turer reserves the right to invoice the total cost of the parts that had been replaced
under this warranty.
Costs and transportation risks of faulty, repaired or replaced parts including custom
charges will be borne entirely by the client.
Repair or replacement of faulty parts cover any obligation under this warranty.
The warranty DOES NOT cover any indirect damage and in particular any normal
consumable material such as diaphragms, ball seats, and others.
The warranty does not cover parts damaged as a consequence of incorrect installa-
tion, carelessness, neglect, incorrect maintenance, or damages due to transporta-
tion or to any other reason or event that is not directly linked to functional or man-
ufacturing defects.
The warranty excludes all cases of improper use of the pump or incorrect appli-
cations or non-observance of the information contained in this manual.
these instructions are essential for the pumps’
compliance to the requirements of the 94/9/CE
directive and must therefore be available, known,
understood and applied.
the personnel in charge of installing, inspecting and
servicing the pumps must have suitable
technical knowledge and training in matters con-
cerning potentially explosive atmospheres and
the related risks.
WARNING
WARNING
Dangerous or hazardous practices or practice not complying with the safety rules
and with the recommendations contained herein, may cause serious injuries, mate-
rial damage and even explosions and /or death for which the manufacturer cannot
be held responsible.

48/72
use of the pumps in a manner that does not comply
with the instructions indicated in the use and main-
tenance manual will cancel all the requirements for
safety and protection against of explosions.
the maximum allowed temperature for process
uids or powder is equal to 65/95°C depending on
the construction materials; if exceeded, respect of
the maximum temperature marked on the machine
cannot be guaranteed.
before using the pump, make sure that the uid
to be pumped is compatible with the explosion
protection class and with construction materials of
thepump: danger ofcorrosion,productspillsand/or
explosions caused by chemical reactions.
before intervening on the pump and/or
servicing or repairing it, please note that you must:
A. Discharge any product that was being pumped
B.Washitinternallyusinga suitable non-ammable
uid, then drain.
C. Cut-o the air supply using the relevant valve
and make sure that no residual pressure remains
inside it.
D. Close all on-o valves (delivery and intake sides)
relative to the product;
E. Disconnect the network air supply;
F. Wear suitable individual protection before any
mainte-nance or repair (goggles/face protection,
gloves, closed shoes, aprons and others).
WARNING
WARNING
WARNING
WARNING
For installation and use in a potentially explosive environment, comply with these
general precautions:
- ascertain that the pump is full and if possible, that the level is above it by 0.5 m;
- ascertain that the uid treated does not contain or cannot contain large solids or
solids of a dangerous shape;
- ensure thet the intake or delivery ports are not obstructed nor limited to avoid
cavitation or pneumatic motor strain;
- also ascertain that the connection piping is strong enough and cannot be de-
formed by the pump weight or by the intake. Also check that the pump is not bur-
dened by the weight of the piping.
- If the pump is to stay in disuse for a long period of time, clean it carefully by running
a non-ammable liquid detergent through it that is compatible with the pump’s
construction materials;
- if the pump was turned o for a long period of time, circulate clean water it in for
some minutes to avoid incrustations.
- before starting, after long periods of disuse, clean the internal and external surfac-
es with a damp cloth;
- check the grounding;
- always protect the pump against possible collisions caused by moving objects or
by various blunt materials that may damage it or react with its materials;
- protect the pump’s surrounding ambient from splashes caused by accidental
pump failure;
- if the diaphragms are completely torn, the uid may enter the air circuit, damaging
it, and be discharged from the exhaust port. It is therefore necessary for the exhaust
port to be conveyed by pipes to a safe area.

49/72
EN
the air supply pressure must never be over 7 bar or
below 2 bar.
when using the pump with aggressive or toxic liq-
uids or with liquids that may represent a health haz-
ardyou mustinstallsuitableprotectionon thepump
to contain, collect and signal any spills: danger of
pollution, contamination, injuries and/or death.
installing the pumps without on-o valves on the
intake and delivery sides to intercept the product in
case of spillage is forbidden: danger of uncontrolled
product spillage.
installing the pumps without on-o, three-way or
check valves on the air supply piping to prevent the
pumpedliquidfrom enteringthe pneumaticcircuitif
the diaphragms are broken is forbidden: danger of
uid entering the compressed air circuit and being
discharged into the environment.
should the user think that the temperature limits
set forth in this manual may be exceeded during
service, a protective device must be installed on the
system to prevent the maximum allowed process
temperature from being reached. If exceeded, re-
spect of the maximum temperature marked cannot
be guaranteed.
the pumps must always be grounded irrespective
of any organ to which they are connected. Lack of
grounding or incorrect grounding will cancel the
requirements for safety and protection against the
risk of explosion.
the use of pumps made with non-conductive
material, which become charged with static, and
without suitable grounding for ammable liquids
is forbidden: risk of explosions due to static charge.
aggressive, toxic or dangerous liquids may cause
serious injuries or damage to health, therefore it is
forbien to return a pump containing such products
to the manufacturer or to a service center. You must
empty theinternalcircuitsfromtheproductrst and
wash and treat it.
pumps containing aluminium parts or components
coming into contact with the product cannot
be used to pump III-trichloroethane, methylene
chloride or solvents based on other halogenated
hydrocarbons: danger of an explosion caused by a
chemical reaction.
the pump must not be used with uids that are not
compatible with its construction materials or in a
place containing incompatible uids.
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING

50/72
The components of the pneumatic exchanger,
including the shaft are made from materials that
are not specically resistant to chemical products.
If the diaphragm should break, replace these ele-
ments completely if they have come into contact
with the product.
the diaphragms (in contact with the product or the
external ones) are highly subject to wear. Their
duration is strongly aected by the conditions of
use and by chemical and physical stress. Fields tests
carried out on thousands of pumps with a head val-
ue from 0° to 18° C have shown that normal service
life exceeds one hundred million cycles. However,
in places at risk of explosion, the diaphragm must
be disassembled and checked every 5 million cycles
and replaced every 20 million cycles.
The air-driven motor of the Piusi MA and Piusi MP
pumps is self-lubricating and will not require any
greasing. Therefore avoid using lubricated and
non-dried air.
periodic controls must be made to ensure that there
is no powder and/or deposits on the external and
internal surfaces of the pump and, if necessary, they
must be cleaned with a damp cloth.
removal of the silencer and the air supply tting
must be done when free from powder. Before
restarting the pump, ensure that no powder has
entered the pneumatic distributor.
ascertain that during service no anomalous noise
appears. In that case, stop the pump immediately.
DVFHUWDLQWKDWWKHÀLGDWWKHGHOLYHU\VLGHGRHVQRW
                                         
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
To replace worn parts, use only original spare parts.
Failure to comply with the above may give rise to risks for the operator, the
technicians, the persons, the pump and/or the environment that cannot be as-
cribed to the manufacturer.
L TRANSPORT AND POSITIONING
The operators in charge of the assembly / disassembly must be informed and trained
on the dangers relating to the use of mechanical tools, even small ones.
The noise levels of the machine correspond to:
• The sound pressure level of the A weighted emission, in the working place, is less
than 78 dB.
Upon receipt, please check that the packing and the pump are intact and have not
been damaged. Then:
1. Depending on the size and weight, the material is forwarded packed in cardboard
cases on a pallet or in a crate: on receipt open and remove the packing.
2. Read the User and Maintenance Manual and proceed as explained.

51/72
EN
3. Make sure that all of the pump’s screws are well tightened.
4. Hoist the pump using suitable equipment according to the weight shown on the
plate.
5. If the pump has been forwarded with drain silencer disassembled, mount the
same.
6. Position the pump correctly on the site chosen for installation, as close as possible
to the point of collection and secure onto the feet using the bolts supplied. Arrange
for enough room to carry out maintenance.
12
3
4
5
Position and secure the pump horizontally using
hangers xed to the ceiling or feet resting on the
ground. The product delivery manifold must al-
ways be positioned on the upper part according
to the signs:
“OUT” = DELIVERY (up)
“IN” = INTAKE (down) or according to the pump
model, check that the arrows shown onto the casing
are always poin-ting upwards.
diaphragm pumps with negative suction are aect-
ed by the following factors:
- viscosity and specic weight of the uid;
- suction diameter and length.
Position the pump as close as possible to the point
of collection (within 2,5 m.) and in any case
  ¡  
        ¢  
WARNING
WARNING

52/72
7. If the pump is made from conductive materials and is suitable for ammable prod-
ucts, each pump casing must be equip-ped with a suitable earthing cable: DANGER
OF EXPLOSION AND/OR FIRE.
This completes positioning.
The diameter of the intake pipe must never be
smaller than the connection of the pump, but must
be increased as the distance increases. Fluid to be
pumped with negative suction must never exceed a
viscosity of 5,000 cps at 20° C and a specic weight
of 1.4 Kg/l. These elements can cause derating and
reduce the duration of the diaphragm: DANGER OF
PREMATURE BREAKAGE.
The pumps must always be grounded irrespective
of any organ to which it is connected. Lack of
grounding or incorrect grounding will cancel the
requirements for safety and protection against the
risk of explosion.
WARNING
WARNING
£
OK
OUT
IN
6

53/72
EN
M CONNECTING THE PRODUCT CIRCUIT
After positioning the pump you can now connect it to the product circuit as follows:
1. On the delivery and discharge manifold install a manual valve of the same diam-
eter as the pump inlet (never smaller) to intercept the uid correctly in case of spills
and/or when servicing the pump.
2. Install the sleeves to secure the exible hoses on both valves.
3. In the event of a vertical delivery higher than 5 meters, we advise to use a check
valve to prevent the uid from returning into the pump.
onlyttings with cylindricalgasthreads in materials
compatible with both the uid to be pumped and
the pump’s construction materials must be used.
For example:
Pump made from PP = PP tting
the pump must be connected with FLEXIBLE HOSES
REINFORCED WITH A RIGID SPIRAL of a diameter
never smaller than the pump’s connection. The
lters or other equipment installed at the intake
side must be suitably dimensioned in order to avoid
pressure drops. For negative installations and/or
viscous uids, use hoses with an OVERSIZE DIAME-
TER, especially on the intake side.
Do not attach the pump DIRECTLY with rigid metal
pipes (on plastic pumps) and/or pipes with tapered
thread, as they can cause severe stress and/or vi-
brations and breakage of the manifolds and other
parts of the pump.
Always use flexible joints with fittings made of
the same material of the pump (PP with PP, ALU
with ALU)
Do not use threadlockers and/or Teon paste. The
installer must ensure that the ttings are centred
duringassembly topreventcracks and/or toprevent
the threads from yielding.
Also check that any excess PTFE tape and excessive
clamping pressure does not place stress on the
manifold or other parts of the pump.
Pay particular attention to stress corrosion crack-
ing. The pump material may deteriorate due to the
combined action of corrosion and application of a
load, which may cause parts subjected to stress to
break suddenly and unexpectedly, especially at low
temperatures.
Check if the connection tubes to the pump are clean
inside and do no contain any working residue.
WARNING
WARNING
12

54/72
4. Connect the product intake and delivery hoses to their respective ttings whilst
taking into consideration the signs on the pump:
“IN” = INTAKE (down) and
“OUT” = DELIVERY (up)
or according to that indicated by the arrows.
5. Secure the hoses using the relevant clamps.
6. If used for drum suction (not below head), the submersed end of the intake hose
must be provided with a diagonally cut xing to prevent it from adhering to the
drum bottom.
Connection of the product circuit nishes here.
Provide appropriate support for the piping. THE
PIPING MUST BE STRONG ENOUGH TO AVOID
DEFORMATION DURING THE SUCTION PHASE AND
MUST NEVER WEIGH DOWN ON THE PUMP IN ANY
WAY OR VICE VERSA.
WARNING
Ascertain that the uid treated does not contain or
cannot contain large solids or solids of a dangerous
shape and that the intake or delivery ports are not
obstructed nor limited to avoid either cavitation or
pneumatic motor strain.
WARNING
4
5
OK

55/72
EN
pneumatic supply to the Piusi MA and Piusi MP
pumps must be made using FILTERED, DRIED, NON
LUBRICATED OIL FREE AIR at a pressure of not less
than 2 bars and not more than 7 bars.
do not remove RESET for any reason and/or do not
con-nect the air supply to the RESET channel.
to measure the actual air pressure, install a pressure
gauge on the air connection of the pump and check
the value while the pump is running.
WARNING
WARNING
REMARK
N PNEUMATIC CONNECTION
To connect the pump to the pneumatic circuit, you must:
1. Remove the adhesive sticker from the air connection.
2. Install an on-o valve, a three-way valve and a check valve on the pneumatic cir-
cuit connection on board the pump according to the layout shown in gure 1.
ONLY FILTER NO OIL
E
C
O
N
N
E
T
T
E
R
E
L
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A
R
I
A
R
I
M
U
O
V
E
R
E
Q
U
E
S
T
A
E
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