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Instruction Manual
D200149X012
Installation
Normally, a positioner is shipped with the actuator. If so, the factory mounts and calibrates the positioner and
connects the positioner to actuator tubing. If the positioner is ordered separately from the actuator, perform the
appropriate mounting procedure, and follow the Calibration procedures in this instruction manual. Refer to the
appropriate instruction manuals for actuator and valve mounting procedures.
WARNING
Avoid personal injury from sudden release of process pressure. Before mounting the positioner:
D Always wear protective clothing gloves, and eyewear when performing any installation operations to avoid personal
injury.
D When installing 3620J, 3620JP, and 3621JP positioners in a hazardous area, turn off control signals until installation is
complete. Be sure all safety barriers, connections, and the converter housing cap and O‐ring are properly installed
before applying a control signal to the unit.
D If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
WARNING
Personal injury or property damage may result from fire or explosion if natural gas is used as the supply medium and
appropriate preventive measures are not taken. Preventive measures may include, but are not limited to, one or more of
the following: Remote venting of the unit, re‐evaluating the hazardous area classification, ensuring adequate ventilation,
and the removal of any ignition sources.
3620J, 3620JP, 3621JP positioners and the 3622 electro‐pneumatic converter do not meet third party approvals for use with
natural gas as the supply medium. Use of natural gas as the supply medium can result in personal injury or property
damage from fire or explosion.
CAUTION
Do not use sealing tape on pneumatic connections. This instrument contains small passages that may become obstructed
by detached sealing tape. Thread sealant paste should be used to seal and lubricate pneumatic threaded connections.
Hazardous Area Classifications and Special Instructions for "Safe Use" and
Installation in Hazardous Locations for 3622 Converter
Certain nameplates may carry more than one approval, and each approval may have unique installation/wiring
requirements and/or conditions of "safe use". These special instructions for "safe use" are in addition to, and may
override, the standard installation procedures. Special instructions are listed by approval.
Note
This information supplements the nameplate markings affixed to the product.
Always refer to the nameplate itself to identify the appropriate certification. Contact your
Partner for approval/certification information not listed here.
3610J and 3620J Positioners
September 2017
Emerson sales office
or Local Business
7
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