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8
PORTS AND CONNECTIONS
The SS70, SN70 and SW70 series pumps (see Fig. 4) are
equipped with:
2 "IN" inlet ports 1" Gas.
Line connection to any of the two ports is indifferent for
proper pump functioning. The unused ports must be
hermetically closed.
2 "OUT" outlet ports 1/2" Gas.
ƒ 3 service ports 1/4" Gas; usually used for the pressure
gauge.
9
PUMP INSTALLATION
9.1
Installation
The pump must be fixed horizontally using the M12 threaded
support feet. Tighten the screws with a torque of 80 Nm.
The base must be perfectly flat and rigid enough as not
to allow bending or misalignment on the pump coupling
axis/transmission due to torque transmitted during operation.
The unit cannot be fixed rigidly to the floor but must
interposed with vibration dampers.
For special applications contact the Technical or Customer
Service Departments.
Replace the oil filling hole closing service
plug (red) positioned on the rear casing cover.
Check the correct quantity with the oil dipstick.
The oil dipstick must always be reachable,
even when the unit is assembled.
The pump shaft (PTO) must not be rigidly
connected to the drive unit.
The following types of transmission are
recommended:
-
Hydraulics by flange, for proper application
consult with our Technical or Customer Service
Departments.
-
V-belts.
-
Universal joint (comply with the maximum
working angles recommended by the
manufacturer).
-
Flexible coupling.
9.2
The rotation direction is indicated by an arrow located on the
casing near the drive shaft.
From a position facing the pump head, the rotation direction
will be as in Fig. 5.
9.3
The pump version is defined as right when:
Fig. 4
Observing the pump facing the head side, the pump shaft
must have a PTO shank on the right side.
The pump version is defined as left when:
Observing the pump facing the head side, the pump shaft
must have a PTO shank on the left side.
Note. The version shown in Fig. 5 is right.
9.4
In order to isolate the system from vibrations produced by
the pump, it is advisable to make the first section of the duct
adjacent to the pump (both suction and outlet) with flexible
piping. The suction hose must be sufficiently rigid to prevent
deformation due to the negative pressure exerted by the
action of the pump.
9.5
A positive head of at least 0.20 metres is required for the best
volumetric efficiency with the fluid at ambient temperature
(see par. 9.6).
While with the fluid at high temperature max. 85 °C, observe
the diagram below that defines the minimum supply
pressures according to the different temperatures.
25
Rotation direction
LH SIDE
clockwise
Version change
The version can only be modified by trained and
authorized personnel and carefully following the
instructions below:
1. Separate the hydraulic part from the mechanical
part as indicated in chapter 2 par. 2.2.3 of the
Repair manual.
2. Turn the mechanical part 180° and reposition
the rear casing cover in such a way that the
oil dipstick is turned upward. Reposition the
lifting bracket and relative hole closing plugs
in the upper part of the casing. Finally, properly
reposition the specification label in its housing
on the casing.
Make sure that the lower casing draining
holes in correspondence with the pistons are
open and not closed from the plastic plugs
provided for the previous version.
3. Unite the hydraulic part to the mechanical part
as indicated in chapter 2 par. 2.2.5 of the Repair
manual.
Hydraulic connections
Pump supply
RH SIDE
anticlockwise
Fig. 5
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