Instruction Manual

DVC6000 SIS
September 2013
7-4
Removing the Module Base
To remove the module base perform the following
steps. Refer to figures 8-1, 8-2, 8-3, and 8-4 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).
Note
The module base is linked to the
housing by two cable assemblies.
Disconnect these cable
assemblies after you pull the
module base out of the housing.
4. Pull the module base straight out of the housing
(key 1). Once clear of the housing, swing the module
base to the side of the housing to gain access to the
cable assemblies.
5. The digital valve controller has two cable
assemblies, shown in figure 7-1, which connect the
module base, via the printed wiring board assembly, to
the travel sensor and the terminal box. Disconnect
these cable assemblies from the printed wiring board
assembly on the back of the module base.
Figure 7-1. Printed Wiring Board Cable Connections
TERMINAL BOX
MODULE BASE
ASSEMBLY
PRINTED WIRING
BOARD ASSEMBLY
HOUSING
CABLE TO
TERMINAL BOX
W8073 SIS
CABLE TO
TRAVEL SENSOR
Replacing the Module Base
To replace the module base perform the following
steps. Refer to figures 8-1, 8-2, 8-3, and 8-4 for key
number locations.
Note
Inspect the guide surface on the
module and the corresponding seating
area in the housing before installing
the module base assembly. To avoid
affecting performance of the
instrument these surfaces must be
free of dust, dirt, scratches, and
contamination.
Ensure the module base seal is in
good condition. Do not reuse a
damaged or worn seal.
1. Ensure the module base seal (key 237) is properly
installed in the housing (key 1). Ensure the O-ring
(key 12) is in place on the module base assembly.
2. Connect the terminal box connector to the PWB
assembly (key 50). Orientation of the connector is
required.
3. Connect the travel sensor connector to the PWB
assembly (key 50). Orientation of the connector is
required.
7