Debem KM70 Installation guide

TRANSLATION OF ORIGINAL INSTRUCTIONS
CAREFULLY READ THIS MANUAL BEFORE USING OR REPAIRING THIS PRODUCT
MAGNETIC DRIVE PLASTIC CENTRIFUGAL PUMP - KM70
Installation, Operatin and
Maintenance Manual
DEBEM SRL
Via del Bosco 41
21052 Busto Arsizio (VA) ITALY
www.debem.com
MOM KM70 REV.01A-EN

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INDEX
1. Warranty
1.1 Warranty con itions
1.2 Warranty terms
1.3 Exclusion Clause
1.4 Warranty Implementation
2. Safety
2.1 Intro uction
2.2 Symbols
2.3 Safety instructions an precautions
2.3.1 Personal Protective Equipment (PPE)
2.3.2 Electricity
2.3.3 Magnetic fiel s
2.3.4 Hot surfaces
2.3.5 Moving parts
2.4 Expecte use
2.5 Safety information for the customer/operator
2.6 Safety information for maintenance, inspection an installation
2.7 Noise
2.8 Monitoring evices
2.8.1 Interruption of the cooling flushing
2.8.2 Loss of synchrony between inner an outer magnet
2.8.3 Liqui leaks
2.9 Operating range
3. Han ling an storage
3.1 Packaging
3.2 Han ling
3.3 Shipping
3.4 Receiving
3.5 Storage
3.6 Return to supplier
4. Installation
4.1 General instructions
4.2 Foun ations
4.3 Correct installation
4.4 Pump installation iagram
4.4.1 General information
4.4.2 Suction piping
4.4.3 Delivery piping
4.5 Instruments
4.6 Pump-motor unit alignment
4.6.1 General information
4.7 Electrical connections
4.7.1 Groun ing
4.7.2 Wire connections
5. Starting an stopping
5.1 Pre-start checklist
5.2 Frequency of starts
5.3 Start-up sequence
5.4 Starting after power failure
5.5 Stop sequence

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5.6 Measures to take for perio s of long inactivity
5.7 Running the pump after a long perio of stop
6. Pump characteristics
6.1 Description an operation of the pump
6.2 Reference regulations
6.3 Minimum an Maximum Flow
7. Technical ata
7.1 Technical characteristics
7.2 Component/material etails an rawing
8. Maintenance
8.1 Maintenance interval
8.2 Parts to be checke
8.3 Replacing wear parts
9. Malfunctions an solutions
9.1 Malfunction table: possible causes an solutions
9.2 Disposal

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Check receipt of goods
Upon receipt of the pump, please open the package an inspect the contents to check:
• the mo el an specifications liste on the ata plate
• any accessories or ere
• the presence of acci ental amages
For any inconsistencies between the elivere an or ere pro uct please contact DEBEM S.r.l. or your
authorize ealer.
For any future spare parts enquiry, assistance, or information about the pump
elivere , it is important that you state the relevant SERIAL NUMBER (shown on the
ata plate fixe on the pump lantern).
This manual provi es the users of the pump-motor unit of DEBEM S.r.l. with the information require for
correct installation, operation an maintenance un er safety con itions as establishe by EC stan ar s.
Please rea this manual carefully before installation an make it available at any time to anyone using
the machine.
The user is liable for amage resulting from not observing the operation con itions agree at Or er
confirmation.
The Purchaser has the responsibility to:
• Check that the pump-motor unit an any accessory are suitable for the working environment.
• Provi e suitable personal protective equipment to the operators.
• Inform users of the allowe use.
DEBEM S.r.l. may up ate or e it this manual at any time an without previous notice to correct typos,
inaccurate information or up ate pro ucts.
These changes must be a e to new e itions of the manual.
DEBEM S.r.l. has no obligation to install any mo ification of esign or improvement of the pro ucts to
previously elivere units.
This manual contains technical information an rawing owne by DEBEM S.r.l. an cannot be re-
pro uce in full or in part in any case without prior written authorization by DEBEM S.r.l.
Any use other than the operation escribe in the manual is consi ere improper use an therefore
DEBEM S.r.l. will not be hel responsible in this case.
DEBEM S.r.l. is a lea er in esigning, manufacturing, selling an servicing centrifugal pumps for the
treatment of angerous an corrosive liqui s in the chemical an pharmaceutical in ustries an in other
in ustrial processes.
DEBEM S.r.l.
Via del Bosco 41
21052 Bus o Arsizio
(VA) I aly
Tel. [phone]
Fax [phone]
www.debem.com

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1. Warran y
1.1 Warran y condi ions
DEBEM S.r.l. warrants that its pro ucts (pumps an spare parts) are free from flaws an /or efects in
manufacturing an assembling for a perio of 12 (twelve) months from the ate of elivery (in icate on
the elivery note).
The purchaser's warranty is limite to the free replacement of parts recognize as efective, exclu ing
the buyer's right to request termination of the contract or price re uction, or other amages.
DEBEM S.r.l. warrants that the pro uct sol is of goo quality, material, an workmanship an agrees
to, uring the warranty perio specifie herein, repair or replace at its own expense in the shortest amount
of time possible, those parts which ue to poor quality of material or efect in workmanship or faulty
assembly prove to be efective.
The warranty is un erstoo ex warehouse from where the supply was carrie out, inclu ing the return of
efective parts.
The warranty vali ity perio is:
12 months
from the ate of elivery/shipment liste on the elivery note .
1.2 Warran y erms
For the warranty to remain fully vali throughout the perio in icate in the warranty con itions it is
necessary that:
• construction an /or material flaws are reporte in writing within 8 ays of receipt of the goo s;
• all contractual obligations of the buyer have been fulfille . Allege or confirme pro uct efects
o not justify non-fulfilment of contractual obligations;
• all installation operations, connection of the Pro uct to energy networks (electric, water), use
an maintenance are carrie out in strict compliance with the instructions inclu e in the
Instruction Booklet or ocumentation provi e with the pro uct;
• all repairs are performe by personnel authorize by DEBEM S.r.l. an that all spare parts use
must be original spare parts.
The warran y does no cover:
• amages occurring uring shipping an han ling carrie out by the buyer;
• pumping flui s that ue to the nature or content are not compatible with the construction
materials an /or application limits prescribe in the or er;
• incorrect selection cause by incorrect information provi e by the buyer;
• incorrect or lack of maintenance;
• tampering, faile or improper execution of the prescribe requirements for putting into service;
• normal wear an tear relate to the service con itions.

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1.3 Exclusion Clause
• Repairs or replacements pursuant to this warranty shall not renew or exten the original
warranty perio
• The pro uct shall not be consi ere efective in materials, esign, or workmanship if they nee
to be a apte , change , or a juste to conform to local technical or safety stan ar s in force in
any Country other than that for which the pro uct was originally esigne an manufacture .
• This warranty will not reimburse for such mo ifications or attempte mo ifications, whether
properly performe or not, nor any amage resulting from them.
• This warranty will not reimburse for any attempte mo ifications ma e to a apt the pro uct for
purposes other than those efine in the contractual phase without prior consent in writing by
DEBEM S.r.l.
• DEBEM S.r.l. shall not be hel liable in any way for in irect, inci ental, or consequential amages
suffere by customers or thir parties, inclu ing loss of profits, resulting from any infringement
of the contents of this ocument, or suffere by customers or thir parties ue to the
impossibility to use the pro uct.
• The terms of this warranty shall be consi ere voi if the User uses the pump ifferently than
as specifie in the or er or oes not follow the instructions containe in this manual.
1.4 Warran y Implemen a ion
• The parts replace must be sent to the closest DEBEM S.r.l. office for review.
• WARRANTY ACCEPTANCE will not be grante unless the efective part is returne or appropriate
photographs an a written report are provi e .
• All efective parts replace , as provi e for in this ocument, become the property of DEBEM
S.r.l.
• The buyer shall not be require to eliver a efective part to DEBEM S.r.l. if:
· the part was estroye as a result of its efect or of any efect covere by this warranty
· DEBEM S.r.l. is reasonably satisfie that the pro uct was efective at the time of sale.
• If both of these con itions are met, DEBEM S.r.l. shall replace the part as establishe herein,
as if the Buyer ha elivere the efective part to DEBEM S.r.l.
• Pumps containing process flui or installations outsi e of the pumping unit shall not be taken
into consi eration.
• The buyer agrees to provi e DEBEM S.r.l. with the time an availability to perform repairs an /or
replacements, as DEBEM S.r.l. eems necessary.
• Interventions on the plant. If the pro uct supplie cannot be remove from the relate plant,
DEBEM S.r.l. shall be responsible only for the explicit repair costs. Any other costs shall be the
sole responsibility of the customer, base on A.N.I.M.A. (Italian Association of Mechanical an
Engineering In ustries) rates, inclu ing any civil works an /or efective esigns.
Without preju ice to the foregoing, DEBEM S.r.l. liability to customers or thir parties from any claim
shall be limite to the total amount pai by the customer for the pro uct that cause the amage.
This warranty shall be governe by the Italian law.
The Court of Busto Arsizio shall have sole juris iction over any ispute.

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2. Safe y
2.1 In roduc ion
This manual contains all the information nee e for the correct installation, use, an maintenance of the
pump. It shoul be rea an un erstoo by all the personnel involve in the installation, operation, an
maintenance of the pump before it is put into service.
Failure to comply with these safety instructions can be a source of anger for people, the environment
an the machine, an voi s any right to make claims against DEBEM S.r.l. The liability of the sup- plier is
ensure only if the pump is use in accor ance with the contents of this manual. The limit values in icate
in this manual or in any other ocumentation concerning the pump must never be excee e . Personnel
involve in the installation, operation, an maintenance of our pumps must be properly qualifie to
perform the operations escribe in this manual.
DEBEM S.r.l. shall not be hel liable for the training level of personnel an for the fact that they are not
fully aware of the contents of this manual.
2.2 Symbols
Each pump is provi e with the following plates:
Fig. 1 PUMP DATA PLATE.
1_Pump mo el
2_Year of manufacture
3_Serial no.
4_Flow rate
5_Hea
6_Material in contact with liqui
7_Impeller iameter
ARROW INDICATING THE PUMP'S DIRECTION OF ROTATION

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GROUNDING
MAGNETIC FIELD HAZARD (only for magnetic rive pumps)
The following symbols are use in this manual:
WARNING: in icates that the pump an its operation may be at risk.
ELECTRICAL HAZARD: in icates a hazar cause by electronic equipment.
MAGNETIC FIELD HAZARD: in icates the presence of a hazar cause by magnetic
fiel s.
GENERAL HAZARD: in icates the presence of a hazar for persons working on the
pump unit.
PROHIBITED: persons with pacemakers must not go near strong magnetic fiel s
(magnetic rive pumps).

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2.3 Safe y ins ruc ions and precau ions
2.3.1 Personal Pro ec ive Equipmen (PPE)
Fig. 2 Suitable gloves to prevent con-
tact with hazardous substances.
Fig. 3 Mas to avoid breathing toxic or
harmful substances.
Fig. 4 Goggles for eye protection.
Fig. 5 Accident prevention shoes to protect feet from any ac-
cidental falls.
Fig. 6 Protective clothing for the body.
Prior o carrying ou any work on he pump make sure o use adequa e pro ec ive equipmen .
Pumps mus be drained and flushed before servicing!
The corrosive an hazar ous liqui s containe in the pump may pose serious health
an environmental hazar s.
Avoi pumping, even at ifferent times, liqui s that may cause chemical reactions,
without first raining an flushing the pump.
After servicing, start the pump again following all the safety instructions escribe in
chapter "Starting an stopping".
Do no run he pump dry.
Start the pump only when it is completely fille an the elivery valve is almost com-
pletely close , limiting this con ition to the time that is strictly necessary to start the
pump.
In the event irty liqui s are to be pumpe , if this was not in icate at the time of or-
ering, please contact DEBEM S.r.l.'s technical service beforehan .
2.3.2 Elec rici y
Do no perform any opera ion on he pump when i is running or before di-
sconnec ing i from he elec rical sys em.
Any hazar cause by electricity must be avoi e (refer to applicable regulations for
further etails).
Do not perform running tests before filling the pump with liqui . Check that the elec-
trical ata shown on the motor plate match the electrical specification of the system to
which the pump will be connecte .

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2.3.3 Magne ic fields
Persons wi h pacemakers mus s ay a leas 50 cm away from magne ic par s/
componen s.
The strong magnetic fiel s present may cause heart rhythm isturbances, affect mag-
netic me ia an all metal instruments in general. See recommen ations uring isas-
sembly/assembly in the correspon ing chapters.
2.3.4 Ho surfaces
Ho and cold par s of he pump uni mus be pro ec ed o preven acciden al
con ac . Do no subjec he pumps o sudden changes in empera ure.
Please remember that the maximum surface temperature mainly epen s on the op-
erating con itions of the flui processe by the user (UNI EN 13463-1 art. 6.1.3).
2.3.5 Moving par s
Do no amper wi h he guards of ro a ing par s. Do no ouch or go near ro-
a ing par s when in mo ion.
2.4 Expec ed use
Safe y of opera ion of he supplied produc can be ensured only if he ins ruc ions of his
manual or of he con rac ual documen a ion are s ric ly followed; if fur her clarifica ions are
needed, please con ac DEBEM S.r.l.
The pump (or pump unit) an any configuration variation must be run accor ing to the limits liste an /
or escribe in the relevant contractual ocumentation provi e with the pump.
Contact DEBEM S.r.l. if the pump must be use in ways or for purposes other than those shown in the
ata sheet an /or contractual ocumentation.
The pump must NEVER operate beyon the values of the ata sheet, such as pumpe flui (type, ensity,
viscosity, etc.), temperature, flow rate, spee , hea an shaft power.
The pump must be in perfect technical con itions before operation.
The pump must never run ry an /or with a percentage of gas over 2% in volume!
Always check that the pump is fille with liqui uring operation.
Applying an observing the technical an operational limits of the pump is necessary
to ensure correct an safe pump operation.

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Always check the limits of minimum flow ra e as shown in the contractual
ocumentation. This is necessary to prevent amage ue to overheating, excessive axial
thrust, amage of the bearings, high wear of rotating parts, etc. (see the section
"Minimum an maximum flow" of chapter "Technical characteristics").
Always check the limits of maximum flow ra e as shown in the contractual ocumen-
tation. This is necessary to prevent amage ue to vibrations, cavitation, amage of
the bearings, overheating, etc. (see the section "Minimum an maximum flow" of chap-
ter "Technical characteristics").
To a just flow rate or hea never operate by closing the suction valve but always operate on the elivery
valve.
Improper use (not consistent with the instructions in this manual or with best practices in the operation
of centrifugal pumps), even if for very short perio s, may cause serious an extensive amage to the unit
(pump or pump unit).
In particular, check an accurately compare the operating temperature limits of the
mechanical parts with those of the pumpe liqui
2.5 Safe y informa ion for he cus omer/opera or
The opera or mus always use Personal Pro ec ive Equipmen (PPE) as
required by he curren safe y regula ions for work environmen s, wi h
regards o he ime and loca ion of he work.
Please ALWAYS:
• strictly observe the instructions of this manual an of the contractual ocumentation;
• respect current safety prevention regulations;
• respect safety measures an regulations of the system an /or customer;
• never isable safety an protections evices when the pump is operating;
• protect hot an /or col parts of the machine so that it is not possible to touch them;
• the personnel must always wear suitable Personal Protective Equipment when working on hot,
col an /o moving parts, as well as checking that the evices are active an are operating
correctly;
• in the event of treatment of angerous liqui s (e.g. explosive, toxic, harmful, hot liqui s), stop,
limit an remove any leaks in or er to avoi risks to people an the environment. Take care to
always follow regulations!
• avoi any electrical hazar . Please refer to applicable national safety regulations an /or
regulations issue by local power companies.

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2.6 Safe y informa ion for main enance, inspec ion and ins alla ion
The instructions of this manual or of the contractual ocumentation must be strictly followe ; if further
clarifications are nee e , please contact DEBEM S.r.l.
Always purge the pump when use to pump harmful liqui s (see section "Return to supplier" in the
chapter "Han ling an storage").
Perform maintenance only when the pump is:
• stoppe an in safety con itions (see the "Stop sequence" section in the chapter "Starting an
stopping")
• coole to room temperature
• not un er pressure
The pump maintenance, inspection an installation personnel must be specialise an qualifie , as well
as informe of the content of this manual.
Any mo ification to the pump is allowe only after prior authorisation by DEBEM S.r.l.
Use only genuine spare parts or spare parts authorise by DEBEM S.r.l. Any amage ue to using non
genuine spare parts voi s any liability by DEBEM S.r.l.
Imme iately after maintenance all safety an protection evices must be reassemble an activate (see
the sections "Pre-start checklist" an "Start sequence" in the chapter "Starting an stopping").
AVOID ANY INCORRECT OR IMPROPER ACTION

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2.7 Noise
The noise levels shown in the following chart refer to pump (A) operation in normal working con itions
couple with an electric motor (B) at a spee of 2900 rpm.
The values of the graph, as per ISO 3744 an EN 12639, are vali for operating range Q/Q
opt
= 0.8-1.1
without cavitation. A an allowance of 3 B to allow for the tolerance of measuring tools.
Fig. 7 Noise chart in logarithmic scale.
The major sources of noise are not connecte with the pump.
We woul like to remin you that the most frequent sources inclu e:
• liqui turbulence in the plant
• cavitation (not epen ent on the manufacturer)
The user mus provide adequa e pro ec ive equipmen if he sources of noise
genera e a noise level harmful for opera ors and for he environmen (in
accordance wi h curren regula ions).

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2.8 Moni oring devices
The motor-pump unit must be operate only within the limits specifie in the ata sheet an on the plate.
If the operating system is unable to guarantee compliance with the parameters shown on the ata
sheet, continuous monitoring evices must be use on the pump.
It is goo to check if monitoring evices are require to ensure that the pump - motor unit is working
properly.
All electrically actuate accessories must be in conformity with applicable safety requirements an
regulations on explosion protection systems.
Take into consi eration the following risks when choosing suitable monitoring equipment:
2.8.1 In errup ion of he cooling flushing
The inner magnet is coole by the process flui through flushing holes locate on the
bushings support. Due to some characteristics of the transporte liqui , e.g. the high
viscosity, flushing coul be interrupte , causing a angerous in- crease in temperature.
2.8.2 Loss of synchrony be ween inner and ou er magne .
Overloa ing, overheating or non-compliance with esign ata can cause a lack of
synchronization of the inner an outer magnets. The thermal energy generate insi e
the isolation shell or outer magnet can also cause a angerous increase in temperature.
2.8.3 Liquid leaks
Liqui leaks ( angerous, toxic, harmful liqui s) can also pose a anger to the personnel
an the environment. Therefore monitor any leak continuously an equip the pump
with containment systems if necessary.

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Presence of magne ic fields near he magne s.
The minimum safety istance from components containing permanent magnets or from permanent mag-
nets not assemble on the pump must be at least 35 cm, for the following reasons:
• Danger of eath for people having a pacemaker!
• Interference with electronic evices!
• Magnets generate strong attraction that interacts with objects, part an components that are
sensitive to magnetic forces!
When the pump is completely assemble the intensity of the magnetic fiel generate by permanent
magnets containe in the cores is completely shiel e , therefore there is no anger ue to the magnetic
fiel s, whether the pump is running or not.
In any case we discourage any people wearing a pacemaker from coming close o he area
near he ex ernal magne , marked by he relevan symbol, in par icular for pumps equipped
wi h very powerful magne s (where he coupled elec ric mo or is very powerful).
2.9 Opera ing range
The pump (or pump unit) operating ranges for pressure, temperature, flow rate, spee an power are
liste in the Data Sheets an /or in the contractual ocumentation an must be strictly observe .
These values always refer to liqui s similar to water; if flui s with chemical an physical characteristics
ifferent from water are pumpe , the above limits may vary an this variation must be taken into ac-
count. If in oubt, contact DEBEM S.r.l.
The aforemen ioned cau ion is ex remely impor an , in par icular for hose
fluids having a specific hea ha could considerably increase he process
empera ure, which in urn can increase he empera ure of he pump surface.

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3. Handling and s orage
3.1 Packaging
DEBEM S.r.l. pumps or pumping units are normally packe in either cartons or secure on pallets. In case
of pumps or ere without an electric motor, they are packe with the external magnetic core
loose, which is kept in the package, yet separate from the pump, an protecte against possible impacts
ue to han ling the package.
The s rong magne ic fields presen (only for mag drive pumps) may cause he-
ar rhy hm dis urbances, affec magne ic media and all me al ins rumen s in
general.
Persons wi h pacemakers mus no , under no circums ances wha soever, go
near magne ic par s and componen s. The s rong magne ic fields can cause
hear rhy hm dis urbances.
3.2 Handling
To move crates, cages, cartons, or pallets weighing more than 20Kg, use proper equipment suitable for
the weight in icate on the shipping ocument. When lifting freely suspen e loa s, harness the crate
as illustrate below.
Fig. 8 Monobloc execution. Fig. 9 Handling.
To ensure correct han ling an lifting of crates, cages, cartons, or pallets, refer to the specific symbols
shown on the packaging.
Fig. 10 Symbols on the pac aging.
3.3 Shipping
The goo s we eliver are subject to a verification proce ure an approve prior to being release . At any
rate, you shoul follow these instructions. The contents of each package are escribe in the packing list
or elivery note. They must be carefully checke upon receipt. Upon receipt, an with the river present
if possible, check that the material an packaging are not amage . Any claim must be reporte imme-
iately to the shipping company, with the claim signe by the river. Furthermore, check that the goo s
elivere match the purchase or er (quantity an type of material).

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3.4 Receiving
See instructions for inspection at the reception given at the beginning of the manual.
3.5 S orage
In case of storage, the pump must be store in a covere an ry location, an kept in its original pack-
aging.
The protection caps an li s of the flanges must remain on the pump until it is time for installation. If the
pump will be store for a long perio of time, or store in particularly severe weather an environmental
con itions, the use of hygroscopic substances (silica gel) or sealing of the package is recommen e .
3.6 Re urn o supplier
Before returning pumps to DEBEM S.r.l., you must ensure the following:
• pump not pressurize ,
• pump completely empty,
• electrical connections isolate an motor secure against switch-on,
• pump coole own,
• auxiliary systems shut own, not pressurize an emptie ,
• manometer lines, manometer an fixtures ismounte .
Pumps that have been use for han ling toxic or corrosive flui s must be flushe an
cleane before being returne to the manufacturer.
Always complete an enclose a truthful an full certificate of econtamination when returning to DEBEM
S.r.l. the pump-motor unit or in ivi ual parts (see form at the en of manual).
Always indica e any purging and safe y measure observed.
Order a safe y cer ifica e from DEBEM S.r.l. if necessary.
Take necessary measures, epen ing on the require repair work, as liste in the table below when re-
turning the pump to the DEBEM S.r.l.:
Repair
carried
ou
Me
a
su
r
e
f
o
r
re
ur
n
...at the customer's premises Return the efective component to the
manufacturer.
...at the manufacturer's premises
Flush the pump an econtaminate it if it
was
use to pump hazar ous me ia. Return th
e
complete pump (not isassemble ) to
the
manufacturer.
...at the manufacturer's premises for w
arranty
repairs
Only in the event of hazar ous pumpe me
ia:
flush an econtaminate the pump. Return
the
complete pump (not isassemble ) to
the
manufacturer.

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4. Ins alla ion
4.1 General ins ruc ions
DEBEM S.r.l. shall not be hel liable for any amage to property or injury to persons cause by incorrect
assembly or assembly performe by unauthorize persons an /or any person who has not receive
specific training on the above operations.
4.2 Founda ions
Do no s ar he pump un il i has been secured o he ground.
The pump-motor unit must be set on an secure to a structure strong enough to support the entire pe-
rimeter of the base of the unit. The support surface of the foun ation must be flat an level. Concrete
foun ations on a firm groun are the most satisfactory type. Comply with the requirements of stan ar
DIN 1045 on han ling concrete. Provi e for foun ation bolts as shown in the illustration:
Fig. 11 Foundations for fixing of pump-motor unit.
Once the pump-motor unit is in position, level it
using metal shims place between the feet an
the surface on which it stan s.
The shims must be place right next to the
foun ation bolts an they must be sufficiently
wi e to cover the largest possible surface.
Check that each foot of the pump-motor unit
stan s stea y on each of these.
Un er no circumstances shoul this position be
obtaine by excessive tightening of the foun a-
tion bolt nuts.
For bases that have win ows, fill them with
mortar that oesn't shrink.
If the unit is installe on a steel structure, make
sure that it is supporte so that the feet o not
warp.
In any case, we recommen that you place ap-
propriate rubber vibration ampers between the
pump an civil works.
4.3 Correc ins alla ion
The pump shoul be installe in a location where, if possible, it is easy to perform maintenance tasks.
Therefore enough space must be provi e aroun the pump in or er to facilitate:
• maintenance operations
• ventilation for the electric motor

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4.4 Pump ins alla ion diagram
Fig. 12 Pump installation diagram.
1_Delivery pipe
2_Valve
3_Check valve
4_Pressure gauge
5_Motor
6_Pump
7_Breather hose
9_Leak collection
10_Compoun gauge
11_Pump connection re ucer
12_Base (refer to allowable forces an
moments tables)
13_Suction pipe (length equal to at least 10
times the suction Ø)
14_Minimum level equal to at least 3÷5 times
the iameter of suction
15_Compensation coupling
16_Cleaning piping ( elivery si e)
17_Cleaning piping (suction si e)
The check valve protects the pump from possible water hammering.
The shut-off/regulation valve exclu es the pump from the line an also a justs the flow.
If here is a foo valve do no ins all a delivery check valve because he closing
of he foo valve before he check valve would cause wa er hammer which
harms pump performance.