Emerson Fisher FIELDVUE DVC6000, Инструкция по эксплуатации, Страница: 105 / 162

Maintenance and Troubleshooting
September 2013 7-3
Ensure that all caps and covers
are correctly installed before putting
this unit back into service. Failure to
do so could result in personal injury or
property damage from fire or
explosion.
CAUTION
When replacing components, use only
components specified by the factory.
Always use proper component
replacement techniques, as presented
in this manual. Improper techniques or
component selection may invalidate
the approvals and the product
specifications, as indicated in table
1-2. It may also impair operations and
the intended function of the device.
Note
If the feedback arm (key 79) or
feedback arm assembly (key 84) is
removed from the digital valve
controller, the travel sensor (key 77)
must be recalibrated.
Because of the diagnostic capability of the DVC6000,
predictive maintenance is available through the use of
ValveLink software. Using the digital valve controller,
valve and instrument maintenance can be enhanced,
thus avoiding unnecessary maintenance. For
information on using the ValveLink software, refer to
the ValveLink software online help.
Module Base Maintenance
The digital valve controller contains a module base
consisting of the I/P converter, printed wiring board
assembly, and pneumatic relay. The module base may
be easily replaced in the field without disconnecting
field wiring or tubing.
Tools Required
Table 7-1 lists the tools required for maintaining the
DVC6000 digital valve controller.
Table 7-1. Tools Required
Tool Size Component
Phillips Screwdriver
Hex key
Hex key
Hex key
Hex key 5 mm
1.5 mm
2.5 mm
5 mm
Relay, printed wiring board
assembly, and cover screws
Terminal box screw
Terminal box cover screw
I/P converter screws
Travel sensor screws
Hex key
Open-end wrench
Hex key
Open-end wrench
Hex key 6 mm
1/2-inch
9/64-inch
7/16-inch
3/16-inch
Module base screws
Connector Arm screw (DVC6010)
Feedback arm screw
DVC6010 mounting bolts
DVC6020 mounting bolts
Removing the Module Base
To remove the module base for DVC6010, DVC6020
and DVC6030 digital valve controllers, perform the
following steps. Refer to figures 8-2, 8-3 and 8-4,
respectively, for key number locations.
WARNING
To avoid personal injury or equipment
damage from bursting of parts, turn
off the supply pressure to the digital
valve controller and bleed off any
excess supply pressure before
attempting to remove the module
base assembly from the housing.
1. For sliding-stem applications only, a protective
shield for the feedback linkage is attached to the side
of the module base assembly (see figures 2-1
and 2-2). Remove this shield and keep for reuse on
the replacement module. The replacement module will
not have this protective shield.
2. Unscrew the four captive screws in the cover
(key 43) and remove the cover from the module
base (key 2).
3. Using a 6 mm hex socket wrench, loosen the
three-socket head screws (key 38). These screws
are captive in the module base by retaining rings
(key 154).
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