Reassembly Procedures; Attach The Electronics Board - Emerson Rosemount 3051 Reference Manual

Section 5: Troubleshooting
November 2012
Note
Do not remove the housing until after you tuck the cable connector completely inside of the
internal black cap. The black cap protects the ribbon cable from damage that can occur when
you rotate the housing.
3.
4.
5.5

Reassembly procedures

1.
2.
3.
4.
Important
Make sure the sensor ribbon cable and internal black cap remain completely free of the housing
as you rotate it. Damage can occur to the cable if the internal black cap and ribbon cable
become hung up and rotate with the housing.
5.
6.
5.5.1

Attach the electronics board

1.
2.
3.
4.
See "Safety messages" on page 89
100
Loosen the housing rotation set screw with a
turn.
Unscrew the module from the housing, making sure the black cap and sensor cable do
not catch on the housing.
Inspect all cover and housing (non-process wetted) O-rings and replace if necessary.
Lightly grease with silicone lubricant to ensure a good seal.
Carefully tuck the cable connector completely inside the internal black cap. To do so,
turn the black cap and cable counterclockwise one rotation to tighten the cable.
Lower the electronics housing onto the module. Guide the internal black cap and cable
through the housing and into the external black cap.
Turn the module clockwise into the housing.
Thread the housing completely onto the sensor module. The housing must be no more
than one full turn from flush with the sensor module to comply with explosion proof
requirements.
Tighten the housing rotation set screw using a
Remove the cable connector from its position inside of the internal black cap and attach
it to the electronics board.
Using the two captive screws as handles, insert the electronics board into the housing.
Make sure the posts from the electronics housing properly engage the receptacles on
the electronics board. Do not force. The electronics board should slide gently on the
connections.
Tighten the captive mounting screws.
Replace the electronics housing cover. The transmitter covers must be engaged
metal-to-metal to ensure a proper seal and to meet Explosion-Proof requirements.
for complete warning
Reference Manual
00809-0100-4001, Rev JA
5 / -inch hex wrench, and loosen one full
64
5 / -inch hex wrench.
64
Troubleshooting