5.7
ELECTROPNEUMATIC
CHANGE-OVER (optional)
The pump can be equipped with a pneumatic change-over valve piloted by a hazardous area certified solenoid.
5.8 HYDRAULIC CHANGE-OVER (optional)
The pump can also be equipped with a hydraulic change-
over valve that activates when the pressure is made on each
line.
Two pressure indicators are equipped with a pin that allows
the operator to visualize the operation of the valve.
The valve can also be equipped with cycle sensor (certified
for hazardous areas) to monitor the inversion phases of the
valve.
6. UNPACKING AND INSTALLATION
6.1 UNPACKING
Once the suitable location for installation has been identified, open the package and remove the pump. Check that it was not
damaged during transport or storage. The packaging material does not require special disposal precautions as it is not in any
way dangerous or polluting. Refer to the local regulations for disposal.
6.2 INSTALLATION
Pump assembly operations are not required. The pump is fixed on a metal pallet that permits safe handling with a transpallet or
fork lift truck. The pallet was designed to be installed in the plant. It has four Ø 14 mm holes suitable for fixing to the floor.
Suitable space must be provided (as shown in the installation diagram) to prevent abnormal positions or the possibility of
impacts. Then, as described above, the pump must be connected hydraulically to the machine and then the connection to the
control panel must be made.
The main change-over parts are:
A casing with a central lapped hole that makes it possible
to make a dry seal connection with the inversion piston,
which is facilitated by a balancing system;
A ground piston with a dual coupling surface, with
grooves that improve lubrication and the seal at high
pressures;
The inversion phase is facilitated by a balancing system;
Sealing gaskets that can support high pressure levels, by
means of a pressurized chamber, optimizing the change-
over function;
Two single acting pneumatic actuating cylinders,
controlled by an 5/ 2 type solenoid valve.
