VVP10 HART
HART
®
VALVE POSITIONER
INSTALLATION, OPERATION, CONFIGURATION AND MAINTENANCE MANUAL
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4
MAINTENANCE
VVP10 HART Valve Positioner, like all Vivace products, is rigorously evaluated and inspected before being shipped to
the customer. However, in case of a malfunction, diagnosis can be made to verify that the problem is located in the
sensor installation, in the configuration of the equipment or if it is a problem of the positioner.
4.1.
ASSEMBLY AND DISASSEMBLY PROCEDURES
Following are the steps for disassembling the positioner for maintenance and repair of parts. Values in parentheses
indicate the part identified in the exploded view (Figure 4.1). To assemble the positioner, simply follow the reverse
sequence of the disassembly steps
Access to Terminal Block
1 Remove the blind cover (20) to access the
positioner terminal block;
2 Take care of the cover locking screw. By
turning it clockwise, the cover is released for
opening, while in the opposite direction it is
locked;
3 Remove the power supply and current return
from the positioner, removing all the wiring by
the electrical connection.
Access to Display
1 Remove the display cover (15) to access the
display (17) and main board (18) of the
positioner;
2 Take care of the cover locking screw. By
turning it clockwise, the cover is released for
opening, while in the opposite direction it is
locked;
3 Unscrew the two screws on the display and
the main board. Disconnect the signal
connection cable and the power cable from
the main board.
Access to Filter and Silencer Elements
1 Remove the manifold (12) through the four
allen screws. At the rear of the manifold are
the three filter elements (10). Periodic
exchanges are recommended, depending on
the quality of the compressed air used;
2 Take care of the existence of 5 o-rings at the
rear of the manifold, during removal;
Figure 4.1 – VVP10 HART exploded view.
3 In the manifold there are two exhaust vents (6) containing the mufflers, which are also recommended for periodic
switching. There is also a third vent vent, located on the opposing face of the air casing, to provide exhaust of the
I/P assembly.
WARNING
Before disassembling the equipment, make sure it is switched off!
Maintenance of electronic boards should not be performed under penalty of loss of equipment warranty.
