Maintenance and Troubleshooting
December 2009
7-9
Terminal Box
WARNING
Refer to the Maintenance WARNING at
the beginning of this section.
Refer to figures 8-2 through 8-6 for key number
locations.
The terminal box is located on the housing and
contains the terminal strip assembly for field wiring
connections.
Note
This procedure also applies to the
DVC6005f remote terminal box.
Removing the Terminal Box
WARNING
To avoid personal injury or property
damage caused by fire or explosion,
remove power to the instrument
before removing the terminal box
cover in an area which contains a
potentially explosive atmosphere or
has been classified as hazardous.
1. Loosen the set screw (key 58) in the cap (key 4) so
that the cap can be unscrewed from the terminal box.
2. After removing the cap (key 4), note the location of
field wiring connections and disconnect the field wiring
from the terminal box.
3. Separate the module base from the housing by
performing the Removing the Module Base procedure.
4. Remove the screw (key 72). Pull the terminal box
assembly straight out of the housing.
5. Remove two wire retainers (key 44), internal and
external to the terminal box.
Replacing the Terminal Box
Note
Inspect all O-rings for wear and
replace as necessary.
1. Install two wire retainers (key 44), internal and
external to the terminal box.
2. Apply silicone lubricant to the O-ring (key 35) and
install the O-ring over the stem of the terminal box.
3. Insert the terminal box assembly stem into the
housing until it bottoms out. Position the terminal box
assembly so that the hole for the screw (key 72) in the
terminal box aligns with the threaded hole in the
housing. Install the screw (key 72).
4. Connect the terminal box connector to the PWB
assembly (key 50). Orientation of the connector is
required.
5. Reassemble the module base to the housing by
performing the Replacing the Module Base procedure.
6. Reconnect the field wiring as noted in step 2 in the
Removing the Terminal Box procedure.
7. Apply silicone lubricant to the O-ring (key 36) and
install the O-ring over the 2-5/8 inch threads of the
terminal box. Use of a tool is recommended to prevent
cutting the O-ring while installing it over the threads.
8. Apply lubricant (key 63) to the 2-5/8 inch threads
on the terminal box to prevent seizing or galling when
the cap is installed.
9. Screw the cap (key 4) onto the terminal box.
10. Install a set screw (key 58) into the cap (key 4).
Loosen the cap (not more than 1 turn) to align the set
screw over one of the recesses in the terminal box.
Tighten the set screw (key 58).
11. Apply sealant (key 64) to the conduit entrance
plug (key 62) and install it into the unused conduit
entry of the terminal box.
7
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