fluid-o-tech MG Series Instruction Manual

INSTRUCTION
MANUAL
MAGNET DRIVE GEAR PUMPS
MG, MK, MS AND PG SERIES
INSTALLATION
The pump should be installed exclusively by authorized
staff. Handle with care.
WARNINGS
• 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 magnetic coupling does not guarantee a defined value of
the discharge pressure. Should it be necessary to protect the
hydraulic circuit from any possible fluid hammers generated
by the pump, it is vital using a pump, equipped with a bypass
or a safety valve to be installed after the pump itself.
• Dedicated configurations are available if the operating outlet
pressure is in between 10bar/145psi and 15bar/ 217psi. In
case of higher outlet pressure, 15bar/217psi to 20bar/290psi,
please consult the factory.
• The hydraulic circuit should be carefully flushed before starting
the pump.
• 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
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
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 Teflon tape is used it is important
not to use too much of it (no more than 2 or 3 turns) to avoid
pieces of PTFE accidentally falling into the pump.
• Before tightening the fittings, hold the part of the pump body
close to the threaded holes. The leverage effects and mis-
manipulation, like the fittings fixation with the pump already
installed onto the motor, can cause components deformation,
leakages, malfunctioning.
• Do not use sealing fluid, as drops may fall into the pipes and
cause the pump block.
• 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.
• For pumps equipped with relief valve the thread on the fittings
must not exceed 5 mm. Failure to observe such warning will result
on damage to the relief valve spring.
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
www.fluidotech.com