I - 9/xx
GB - 19/xx
GB - 20/63
The graph to be used to reduce the maximum pressure
differentials when the ambient temperature is b21°C
(+70°F) and +40°C (+104°F) is given below.
4.1.2 INSTALLATION
CONDITIONS
For installation exceeding 1000 m (3300 ft) contact FPZ for
assistance as installations at higher altitudes will affect blower
performance.
The support surfaces for the unit must be flat, strong, stable,
and as level as possible.
It is important that the unit be installed on a structure that does
not transmit significant vibrations back to the blower.
Under all conditions, do not install units on structures that can
transmit or amplify noise (tanks, steel plating, etc.).
The unit must always be installed using anti-vibration supports.
The unit must be installed in such a way that the motor’s
ventilation is not impeded by obstacles put in the immediate
vicinity.
To this end a minimum gap must be kept between the motor’s
fan guard and any other structure of at least 50 mm (2 in.).
See the INSTALLATION DIAGRAMS in chapter 8.
4.1.3 HORIZONTAL
INSTALLATION
The unit is ready for installation in a horizontal position, suitably
fixed to the bracket / brackets.
The bracket has fixing holes. Use all the holes and suitable bolt
types.
See point 4.1.2 for the INSTALLATION CONDITIONS.
Remove the covers over the openings before checking the
direction of rotation and before final connection.
When connecting the unit cabin to the ducting, do so using the
flanges on the silencer housings and form suitable connections
using flexible hoses. Avoid rigid connections that may impose
loads and give rise to harmful vibrations.
Fit the flanges on the silencer housings complete with gaskets
again, and tighten.
Danger due to vibrations!
Regularly check that the points at which the unit is fixed to
the support structure are tight.
Excess vibration of the unit can cause damage to balance,
resulting in injury to people and even death!
WARNING!
To guarantee that the unit is well ventilated after installation,
proceed as follows:
The air intake on the motor’s fan guard must be kept free.
Intake fresh air only. Avoid recirculation and / or ingestion of
contaminated / hot air from other sources.
If the unit is installed in a closed space, guarantee a good
flow of cooling air by using an extractor / fan and correct air
intake for cooling the motor.
Any use other than the intended use of the
unit may cause serious injury and even
death!
To avoid overloading due to pressure fluctuations, fit a
safety valve on the suction pipe if used as a vacuum pump
and on the delivery pipe if used as a compressor.
Danger due to foreign bodies and dirt getting
into the unit!
Any foreign bodies, even very small in size, getting into the
unit causes serious damage and probable breakage of the
impeller, and a danger that broken bits may be projected
outwards!
Foreign bodies include: Dust, sand, lime scale, impurities in
the pipes, cutting or threading burrs, welding drops or slag,
metal burrs or residue of sealing products used when
connecting up the pipework.
Protect the suction pipe using a suitable filter with a
maximum degree of filtration of 25
µ
m and a maximum load
loss of
∆
P=20mbar (8” wg).
Replace filters regularly!
WARNING!
Size piping and choose accessories that cause the minimum
load losses, and so:
Do not fit pipes of a diameter smaller than that of the
machine’s openings.
When installing a number of machines in parallel, size the
manifold and main line accordingly.
Do not use elbows, but large radius bends.
Do not fit valves with a passage smaller than the nominal
size and non-return valves with a spring-loaded shutter
(the non-return valve that causes the smallest load loss is
one with a lightened shutter).
When using for aeration, choose diffusers with a low
passage resistance (low load loss) and do not forget that
the diffusers and porous sieves can clog over time and
increases load.
WARNING!
Avoid the possibility of standing water, especially when
installing the unit with its axis vertical .
WARNING!
Check the direction of rotation in the motor.
(See point 4.2.3 ROTATION DIRECTION)
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44
Ambient temperature °C
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