Instruction Manual
D103785X012
Maintenance and Troubleshooting
June 2017
67
WARNING
Personal injury, property damage, or disruption of process control can result if the cable assemblies/wiring are damaged
when attaching the cover to the module base assembly.
Ensure that the cable assemblies/ wiring are positioned in the cavity of the module base so they do not get compressed or
damaged when attaching the cover to the module base assembly in step 6.
6. Attach the cover (key 43) to the module base assembly.
7. For sliding‐stem applications only, install the protective shield onto the side of the replacement module base
assembly (refer to figure 6‐1).
Submodule Maintenance
The base unit's module base contains the following submodules: I/P converter, PWB assembly, and pneumatic relay. If
problems occur, these submodules may be removed from the module base and replaced with new submodules. After
replacing a submodule, the module base may be put back into service.
CAUTION
Exercise care when performing maintenance on the module base. Reinstall the cover to protect the I/P converter and
gauges when servicing other submodules.
In order to maintain accuracy specifications, do not strike or drop the I/P converter during submodule maintenance.
I/P Converter
Note
After I/P converter submodule replacement, calibrate the digital valve controller to maintain accuracy specifications.
Replacing the I/P Filter
A screen in the supply port beneath the I/P converter serves as a secondary filter for the supply medium. To replace this
filter, perform the following procedure:
1. Remove the I/P converter (key 41) and shroud (key 169) as described in the Removing the I/P Converter procedure.
2. Remove the screen (key 231) from the supply port.