00809-0100-4835 Rev BE
Maintenance & Troubleshooting
NOTE
Numbers in parentheses refer to item numbers in Figure 5-1.
3150 Series transmitters contain electronic circuit boards
which may be static sensitive. Therefore, observe proper ESD
precautions/techniques whenever the electronics assemblies
are handled and/or exposed.
Reassembly
The Electronics Housing Set Screws (12) are held in place by
a thread lock compound (Loctite® 266) applied at the factory
during manufacturing. If this interface is damaged, the
qualification of the transmitter may become invalid. The
following reassembly instructions assume that the housing-to-
module interface is intact.
Prior to any maintenance that
requires the housing (5) to be rotated or removed from the sensor
module (8), please contact Rosemount Nuclear.
1. Replace the cover o-rings (2) whenever removing an
electronics housing cover (1). Check the cover o-ring
grooves for cleanliness. If chips or dirt are present,
clean the seat and mating portion of the cover with
alcohol. Lubricate replacement o-ring(s) with
Molykote
®
55 silicone o-ring grease or your plant-
approved equivalent. For reference, the transmitter
was qualified using Molykote
®
55 silicone o-ring
grease (Spare Parts number 03154-5002-0001 or
03154-5002-0002).
2. Ensure filter pins are clean. If necessary, clean with
Electronics Assembly Installation
1. Align the zero and span adjustment screws with the
potentiometer stems on the board in the electronics
assembly (4) as shown in Figure 5-7.
Figure 5-7 – Alignment of Adjustment
Screws and Potentiometer Stems
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