Replacing The Instrument; Instrument Removal; Replacing The Magnetic Feedback Assembly; Replacing The Power Module - Emerson Fisher 4320 Instruction Manual

4320 Position Monitor
February 2013

Replacing the instrument

To replace an instrument that has been previously mounted to a control valve, perform the following basic steps:

Instrument Removal

Remove the bolts connecting the 4320 housing to the mounting bracket.
Note
The magnet assembly may remain on the valve stem (or shaft).
When replacing the instrument, be sure to follow the appropriate mounting procedure. Once the instrument is
mounted, perform the calibration routine before putting back in to service.

Replacing the Magnetic Feedback Assembly

To remove the magnet assembly from the actuator stem, perform the following basic steps.
1. Remove the 4320 from the actuator.
2. Remove the screws holding the magnet assembly to the connector arm.
Install the new magnet assembly per the appropriate Installation/Mounting procedure. Once the instrument is
mounted, perform the calibration routine before putting back in to service.

Replacing the Power Module

WARNING
Personal injury and property damage can result from fire or explosion if the power module, which contains two
lithium-thionyl chloride (Li-SOCl
cool, dry and ventilated area; for maximum life, storage should not exceed 30_C (86_F).
Note
The batteries contained in the field replaceable power module are not rechargeable. Contact your Emerson Process Management
sales office if a replacement power module is required.
When operating in temperatures between -10_C (14_F) and -20_C (-4_F) it is recommended that you use the extended power
module, as power module life is impacted. The life expectancy of an extended life power module used continually in the -10_C
(14_F) and -20_C (-4_F) range is 3 years.
Note
Proper disposal of used power modules, which contain two lithium-thionyl chloride (Li-SOCl
should be done in accordance with applicable local rules and regulations.
For additional information refer to the manufactures guidelines for disposal of lithium batteries:
http://www.tadiranbat.com/pdf.php?id=0111_-_Guidelines_for_Disposal_of_Lithium_Cells_and_Batteries (available at
www.tadiranbat.com).
40
) batteries, is subjected to heat above 100_C (212_F). Power modules should be stored in a
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Instruction Manual
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) batteries, is required. Disposal
2