fluid-o-tech MONO Series Instruction Manual

INSTRUCTION
MANUAL
SOLENOID PUMPS MONO SERIES
INSTALLATION
The installation should be done by a qualified technician.
In case of substitution of a pump verify that the model on
the label is the same of the original pump to avoid damage
due to different hydraulic or electric characteristics or fluid
compatibility. The power supply must be consistent with
the electrical data stamped on the pump, with particular
regard to voltage and frequency. Verify also that, during
installation, the machine to which the pump is going to be
mounted is disconnected from the power supply.
For the models in epoxy resin without the double insulation
(class I device) the grounding wire is necessary. In case
of prolonged working the coil gets hot. In case the pump
operates in a closed space or with temperature higher than
50 °C (122 F), a thermal protector is necessary. Electric
wires, rubber pipes or any part sensible to heat should not
be in contact with the pump. Also avoid installing electric or
electronic components nearby the pump, because a leak
might damage them. A leaking pump has to be repaired or
replaced. It's advisable to install the pump under the tank in
order to avoid cavitation. If the pump is directly connected
to the line, the inlet pressure shouldn't be higher than 2 bar
(29 psi). Do not install the pump plunged in the liquid if this
is not a dielectric one. The vibrations during operation can
be damped by utilising the stands available from Fluid-o-
Tech; this will reduce noise or resonance of machine parts.
WARNING
Before installation, in order to improve the subsequent
correct priming of the pump, it is suggested to blow
compressed air from the suction line for three seconds.
OPERATING CONDITIONS
Make sure that the pumped fluid is compatible with the
materials of the pump. Avoid as well to use liquids with
temperature higher than 70 °C (158 F). The pump is
designed to handle clean water. Particles in the fluid may
cause failure of the pump. For any application involving
different fluids or unusual operating conditions please
verify the compatibility with Fluid-o-Tech. It's necessary
to mount a 10 µm filter before the pump if the fluid
contains particles or extraneous objects and to keep it
clean periodically; a dirty filter (or an insufficient surface
area) doesn't let the liquid flow causing cavitation and
fast wear of the internal parts. Priming and operating the
pump at more than 0.5 m higher than the water line may
cause prolonged dry running or cavitation. The pump
shouldn't work with the outlet clogged or at maximum
pressure because overheating of the pump and breaking
of some parts of the circuit may occur under these
circumstances. Models with relief valve are available: in
case of obstruction of the pipe the pressure can't raise
over the set valve. The relief valve is set by Fluid-o-Tech
at 10 bar (145 psi) for the models 1006 and 1106 and
6 bar (88 psi) for the models 1008 and 1108, except for
specific request of the customer. For a correct use of the
pump, the working pressure should be at least 1 bar (14.5
psi) lower than the set value. The 1006 series should work
with back-pressure not lower than 1.5 bar (22 psi). The
1008 series should work with back-pressure not lower
than 1 bar (14.5 psi). The 1106 and 1108 series may work
without back pressure. It's strongly recommended not
letting the pump run dry. Dry running causes overheating
and wears out the internal parts of the pump. If the
pump is not equipped with a relief valve it's advisable to
check that the system is protected (it's possible to use an
external relief valve or a pressure switch to interrupt the
liquid flow) against accidental overpressures (electrovalves
shutting or a clogged outlet) which may compromise the
integrity of the circuit. If the pump is equipped with a relief
valve, a storage tank or a system to recover the liquid
dripping through the valve is necessary. The relief valve
is not and must not be used as a flow regulator. Models
equipped with a flow regulator (restrictor) are available.
The flow depends on the working pressure. If the pump
is powered by an electronic circuit, this must be able to
supply the necessary current (pulsating current with peaks
equals to 1.8 times the average).
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