Emerson 00809-0100-4514 DISASSEMBLY PROCEDURE Process Flange Removal, Rosemount, Reference Manual

Rosemount 1154

Reference Manual

00809-0100-4514, Rev BA January 2008

DISASSEMBLY

PROCEDURE

Process Flange Removal

NOTE

Numbers in parentheses refer to item numbers in Figure 5-2 on page 5-5.

NOTE

The Rosemount 1154 Pressure Transmitter contains electronic circuit boards which may be static sensitive.

Process O-rings may retain some process fluid after disassembly of process flanges. If this fluid is determined to be contaminated, take appropriate safety measures.

NOTE

Read the Process Flange Reassembly Procedure on page 5-8before attempting disassembly. Special testing and traceability are required.

1.Remove the transmitter from service before disassembling flanges.

2.Detach process flanges (13, 15) by removing the four large bolts (14). Take care not to scratch or puncture the isolating diaphragms. Identify high and low (“H” and “L”) flanges for reassembly.

NOTE

Carefully remove the O-rings (11) from the cell if they do not come off when the flange is removed. Do not pry the O-ring from its seat, as you may damage the isolating diaphragm.

3.Clean isolating diaphragms with a soft rag and a mild cleaning solution. Do not use any chlorine or acid solutions to clean the diaphragms. Rinse diaphragms with distilled water.

5-4