8
PORTS AND CONNECTIONS
The KT4M 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.
3 service ports 1/4" Gas; usually used for the pressure
gauge.
3
2
2
OUT
IN
1
1
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) should not be rigidly
connected to the propulsion unit.
The following types of transmission are
recommended:
-
Hydraulics by flange, for proper application
consult with our Technical or Customer Service
Departments.
-
V-belts.
-
Cardan-shaft (comply with manufacturer's Max.
recommended working angles).
-
Flexible joint.
9.2
Rotation direction
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:
Observing the pump facing the head side, the pump shaft
must have a PTO shank on the right side.
OUT
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.
IN
Note. The version shown in Fig. 5 is right.
Fig. 4
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 consistency of the suction section must be such as
to prevent deformations caused by vacuums produced by the
pump.
9.5
A positive head of at least 0.20 meters is recommended for
the best volumetric efficiency, to be increased with increasing
fluid density.
9.6
For smooth operation of the pump the suction line must have
the following characteristics:
1. Minimum internal diameter for pipes of length less than
8 m. 1".
The pipe must be rigid enough to avoid self-constriction
caused by the pressure drop.
24
LH SIDE
clockwise
anticlockwise
Version change
The version can only be modified by trained and
authorised personnel and carefully following the
instructions below:
1. Separate the hydraulic part from the mechanical
part as indicated in chapter 2 par. 2.2.2.1 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. 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. 2.2.2.2 of the
Repair manual.
Hydraulic connections
Pump supply
For the priming conditions see the chart in
par. 9.8.
Suction line
RH SIDE
Fig. 5