Removing And Replacing The Inner Guide And Access Handle Assembly - Emerson FISHER FIELDVUE DLC3010 Instruction Manual

DLC3010 Digital Level Controller
Maintenance & Troubleshooting
May 2018
1. Apply sealant to the O‐ring (key 27) and install the O‐ring over the stem of the terminal box as shown in figure 7‐3.
2. Orient the terminal box so that the connectors engage properly, and carefully insert the terminal box into the
transducer housing until the O‐ring is seated.
CAUTION
To avoid damaging the mating pins in the Transducer housing, ensure that the guiding mechanism is engaged properly
before applying force.
3. Fasten the terminal box to the transducer housing with the screw (key 7). Tighten the screw to 6 NSm (53 lbfSin).
4. Apply sealant to the O‐ring (key 26) and install the O‐ring over the cover threads on the terminal box. Use a tool to
prevent cutting the O‐ring while installing it over the threads.
5. Reconnect the field wiring as noted in step 2 in the Removing the Terminal Box procedure.
6. Apply lubricant to the threads on the terminal box to prevent seizing or galling while installing the terminal box
cover.
7. Screw the terminal box cover assembly (key 6) completely onto the terminal box to seat the O‐ring (key 26). Loosen
the cover (not more than 1 turn) until the set screw (key 31) aligns with one of the recesses in the terminal box
beneath the cover. Tighten the set screw to engage the recesses but no more than 0.88 NSm (7.8 lbfSin).
8. Apply lubricant to the conduit entrance plug (key 28) and install it in the unused conduit entrance.
Removing and Replacing the Inner Guide and Access Handle
Assembly
The access handle and inner guide are located on the transducer housing. Unless indicated otherwise, refer to
figure 7‐2.
1. Remove the digital level controller from the sensor as described in Removing the Digital Level Controller from
the Sensor.
2. Loosen and remove the hex nuts (key 34) from the studs (key 33) and remove the adapter ring (key 32).
Note
In the next step the screws (key 13) will be attracted by the magnets on the lever assembly. Use care to keep the screws from
falling beneath the coupling shield.
3. Remove the coupling shield (key 16) by removing the two screws (key 13). Take care not to drop the screws into the
lever assembly compartment where they will be attracted by the magnets.
4. Loosen and remove the two screws (key 13) in the handle assembly (key 12). Remove the handle assembly and the
inner guide (key 11).
5. Apply thread lock to the internal threads of the replacement inner guide. Also apply a thin coat of a light grade of
grease to the zero locking pin on the inner guide and on the surface that is opposite the zero locking pin, as shown
in figure 6‐3 (this surface contacts the transducer housing when installed).
6. Place the inner guide in the slot inside the transducer housing so that the vent holes in the inner guide (the milled
slots in the inner guide, see figure 6‐3) face the exterior of the housing and are over the access hole.
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Instruction Manual
D102748X012