fluid-o-tech MK series User manual

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INSTRUCTION
MANUAL
MANUAL - MG/MK/MS/PG - 06/13 Ed.
MAGNET DRIVE GEAR PUMPS
MG, MK, MS AND PG SERIES
The pump should be installed exclusively by authorized
staff. Handle with care.
WARNING
The flange must be handled with
care and should not be grasped with
tongs or vices, since this could cause
misalignment of the magnets and
damage of the pump.
For food applications the pumps (even
when NSF listed) need to be sanitized by circulating
water at 80 °C/176 °F for at least 20 minutes.
The water used for this operation must not be reused,
either during the sterilization or later, but must be
discharged. In order to avoid any accidental ingress
of solid matter which might damage the internal
components of the pump, it is recommended
removing the two protection caps placed on the inlet
and outlet ports of the pump only immediately before
mounting the fittings and the pipework.
If continuous operation is required, the pump should
be mounted in a well ventilated environment in order to
dissipate the heat produced by the motor.
To avoid vibrations of mechanical parts and noise, it
is advisable to mount the motor with rubber shock-
absorbing supports.
Particular care must be taken when connecting the
pump with fittings in order to avoid leaks.
If a sealing fluid or Teflon tape is used, do not allow
any to enter the pump.
It is advisable to use stainless steel or plastic fittings.
When substituting just the pump-head, it is necessary
to ensure that the model number of the new pump is
identical to the pump to be changed. Exchanging the
pump for a model of different capacity may damage
the system, the motor and the pump itself.
The hydraulic circuit should be carefully flushed before
starting the pump.
WIRING THE MOTOR TO THE POWER SUPPLY
• The power supply must be consistent with the
electrical data stamped on the motor plate,
with particular regard to voltage, frequency and
current.
• Thepowermustbeswitchedoffduringinstallation.
MOTOR SELECTION
When the motor is not supplied with the pump it
is necessary to verify that the motor dimensions
and specifications are in line with Fluid-o-Tech
recommendations. Fluid-o-Tech gear pumps need
a motor running at a speed between 800 and 5000
rpm.Theflowrateisproportionaltothemotorspeed.
Thecontinuosmaxtorquemustbelowerthan0.1Nm
withferrite-ferritemagnetcoupling.Highertorquecan
beattainedwithothertypesofmagnets.
ASSEMBLING THE MAGNET ONTO
THE MOTOR SHAFT
Motors with flat shaft (“D” TYPE)
1 Tighten the set screw in its seat in the magnet
holder until it protrudes from the bore of the
brass insert in order to verify that there are no
imperfections in the thread which might stop the
setscrew beforeit isable toblock themagnet on
therotorshaft.
2Loosenthesetscrewuntilitnolongerprotrudesinto
theborewheretheshaftwillbeinserted.
3 Placethemagneton thetoolAT152with thebore
where the set screw sits in correspondence with
theflatsurfaceofthe“D”pin(fig.1).
4Tightenthesetscrewuntilittouchesthepin,butdo
nottightensomuchastomaketheextractionofthe
magnetdifficult.Thepinshouldnotbescratchedby
thesetscrewwhenextractingtheshaft.
pump-motor unit is instead considered as a machine
and supplied with the mark “CE”. In this case, the unit
satisfies the requirements of the following Directives:
89/366/CEE related to Electromagnetic Compatibility -
EMC,73/23/CEE related toElectric Material intendedto
beusedinpotentiallyexplosiveenvironments- DTB and
94/9/CE related to Equipments and Protection Devices
intendedtobeusedinpotentiallyexplosiveenvironments
-ATEX.The Fluid-o-Tech conformitydeclarationmay be
requestedtostatetheessentialcomplianceswiththe
abovementionedDirectives.
STANDARD MAINTENANCE
Maintenance and replacement of parts subject to wear
onFluid-o-Techmagnetdrivegearpumpsshouldonlybe
done by a technician certified by Fluid-o-Tech. Periodic
cleaning of the hydraulic circuit and filters is advisable
in order to avoid cavitation and premature wear of the
internalcomponents.
Fluid-o-Tech Int’l Inc.
161AtwaterSt.,
PlantsvilleCT(USA)06479
Tel.+1(860)2769270
Fax+1(860)6200193
[email protected]
Fluid-o-Tech Int’l Inc. Japan
203,2-17-19,Ebara,Shinagawa
Tokyo142-0063,Japan
Tel.+81(0)(3)37839660
Fax+81(0)(3)37839661
[email protected]
Fluid-o-Tech Asia (Beijing) Co., Ltd
JingweiIndustrialZone,
BeifangHuairou,Beijing,101400,PRC
Tel.+86(0)(10)61684650
Fax+86(0)(10)61684651
[email protected]
Fluid-o-Tech srl
ViaLeonardodaVinci,40
20094Corsico,Milano,Italy
Tel.+3902999501
Fax+390299950999
[email protected]
Fluid-o-Tech reserves the right to alter the specifications indicated in this catalogue at any time and without prior notice.
INSTALLATION
Find out more
Clark Solutions
10 Brent Drive
Hudson, MA 01749
Tel: [phone]
Website: www.clarksol.com
e-mail: [email protected]
Distributor Contact:

5 Remove the magnet and place it on the motor shaft.
In this way the set screw, protruding slightly from the
internal diameter of the bore in the brass bushing,
prevents incorrect orientation of the magnet during
assemblyontothemotorshaft.
6 Place the unit vertically on tool AT 152/1 with the
magnetfacing downwardsin order toset themagnet
inthecorrectposition(seefig.2).
 Tightenthesetscrewwithamax.torqueof1.5Nm.
Motors with shaft key seat and MGAS/MGAF series
driving magnets
1 Tightentheset screwin its seatin the magnetholder
until it protrudes from the bore of the brass insert in
order to verify that there are no imperfections in the
threadwhichmightstopthesetscrewbeforeitisable
toblockthemagnetontherotorshaft.
2 Loosen the set screw until it no longer protrudes into
theborewheretheshaftwillbeinserted.
3 Ensure the shaft key is removed from its seat on the
motorshaft.
4 Place the unit vertically on tool AT 152/1 with the
magnetfacing downwardsin order toset themagnet
in the correct position (see fig. 3). Tighten the set
screwwithamax.torqueof1.5Nm.
note:
For dimensions of tool AT 152/1 refer to table 1.
OPERATING CONDITIONS
Ensure that the pump materials are compatible with
the pumped fluid. Fluid-o-Tech pumps are designed to
handlecleanwateratambienttemperature.
Any other fluid and/or operating condition need to be
tested and approved by the customer and verified by
Fluid-o-Tech. The maximum liquid temperature is 120
°C (248 °F). It is strongly recommended, especially for
theinlet,usingapipewithaninnerdiametersufficientto
handlethepump’scapacity.Thiswillavoidcavitationand
consequentfailure ofthe pump.The dischargepressure
mustnotexceed20bar/290psiinanyevent.
Thepipingonthedischargesideshouldthereforebeable
tohandleapressureof20bar(290psi).
Itisalsorecommendedinstallingafilterbeforethepump
capableofkeepingoutparticleslargerthan10μmwhich
could cause fast wear of the internal components, and
witha surface arealarge enough not to cause hydraulic
losses in the circuit. It is also important to check
periodically the filter cartridge. In order to keep the filter
under control, it is advisable to install a vacuum gauge
after the filter. In case the vacuum increases more than
0.1bar,thecartridgeshouldbecleanedorchanged.
For long pump life, the pumped fluid must not contain
solid particles. Although the magnet drive gear pumps
are self-priming, they should operate under wetted
conditions, as dry running will cause accelerated wear
oftheinternalcomponents.Adirtyfilteroraninsufficient
supply of water can cause cavitation and accelerated
wearoftheinternalcomponentsofthepump.
If the suction line is subject to low pressure or flow it
is recommended fitting a pressure/level switch before
the pump in order to switch the motor off when that
happens. It is also recommended to protect the system
from accidental overpressure with safety devices such
asapressurereliefvalveorapressureswitchconnected
tothemotor. It isnotadvisable to installsolenoidvalves
in the circuit; however, if necessary, the soleinoid valve
should only be installed after the pump. Solenoid valves
installedbeforethepumpshouldbeavoidedatalltimes.
The internal diameter should be appropriately sized for
thepumpcapacity.Inordertoavoidpressurespikesthe
solenoid valve should only be operated after the pump
has stopped, allowing a few seconds to go by after the
motor has been switched off. If the pump is equipped
with a relief valve (bypass), the valve will act, in case of
accidentaloverpressure, to limit the pressure,by means
orrecirculatinfthefluidinternally.
The relief valve is not a flow regulator, and should
notbeused as such.Ifused as aflowregulator, the
excess fluid will recirculate within the pump, through
thereliefvalve,andthepumpmayfail.
Themaximumdifferential pressure shouldbeat least
1 bar (14.5 psi) lower than the relief valve setting in
ordertoavoid fluid recirculationandtherefore lossof
capacityandultimatelyfailure.
Dueto magneticcoupling, thepump doesnot requirea
mechanical seal to prevent leakage. This eliminates the
usualproblemsassociated withtheuse ofa mechanical
seal. The maximun pressure varies with pump model
and speed. As the differential pressure deacreses the
flowratewillincrease.Beyondthevaluesspecifiedinthe
charts on page 4 of this leaflet where the performances
outside the grey area are attained with the rare earths
magnet, the torque that can be transmitted is limited
by the magnet strenght, and the coupling between the
motor and the pump is not guaranteed, therefore the
pump might stop. The coupling can be re-established
simply by switching off the motor, waiting until it is
completelystopped,andthenrestartingthemotoragain.
WARRANTY
Every new pump manufactured by Fluid-o-Tech is
guaranteed to be free of defects in workmanship and
materialwhenleavingthefactoryforaperiodof18months
from the production date printed on pump label, plus a
periodof6monthstocoverthewarehouseandtransittime,
orforaperiodofmaximum24monthsfromthepurchasing
date to the first product use. In no event shall this period
exceed24monthsfromdateoforiginalinvoice.
Fluid-o-Tech will repair or replace at our discretion part or
all ofthe productnotconforming tothis warranty.Fluid-o-
Tech’s responsibility under this warranty is limited to the
repair or replacement of defective product returned to us
onanDDPbasis,providingthatouranalysisdisclosesthat
suchpartorpartsweredefectiveatthetimeofsale.
Thewarrantyisnotrecognizedif:
• The instructions on how to handle, install or operate
thepumparedisregarded.
• The pump has been disassembled or modified by
anyone other than a Fluid-o-Tech (or authorized by
Fluid-o-Tech) engineer or repaired with non original
components.
• Thepumpgasbeenoperateddry,undercavitation.
• Solidextraneousparticlesarefoundinthepump.
• Obvioussignsofexcesspressureareevident.
• The pump has been utilized for an application for
which it was not intended to be used where the
operating conditions and/or the pumped liquid were
incompatible with the pump itself and this application
hasnotbeenspecificallyapprovedbyFluid-o-Tech.
• In case of pumps equipped with a relief valve, when
theoperatingpressurehasbeenlessthan1barbelow
thereliefvalvesetting.
• Normal wear and tear is not covered by the present
warranty
The adjustment or replacement of defective parts made
under this warranty will not extend the original warranty
period.
CERTIFICATIONS
NSFlistedpumpsavailablefordrinkableliquids.Forthe
modeldetails,pleaserefertotheofficialNSFwebsite
(directlinkavailableonwww.fluidotech.it)
The pump itself, without the motor, is not to be
considered as a machine, but only a component,
thereforethemark“CE”isnotapplicable.
Whenthepumpisassembledwithamotor,thecomplete
Fig. 1
Tool pin reference plane
Fig. 2 - MGAF series driving magnets with “D” shaft
AT-152_1
Fig. 3 - MGAF series driving magnets with shaft key seat
AT-152_1
X
Tool AT-152_.. options (depending on pump series
and magnet type)
Pump series MG/MS MK
Magnet type MGAF MGAS MKAF MKAS
“X” dimension 3 3 3 6
(in mm)
Tool type AT-152_1 AT-152_2 AT-152_8
Tab. 1: Tool AT-152_..