Emerson Fisher 3610J Instruction Manual page 47

Instruction Manual
D200149X012
this part. Therefore, the summing beam assembly (key 123, figure 25) or relay beam assembly (key 122, figure 25)
or both may be required if they are not drilled and tapped to accept this parallel flexure. Refer to figure 25 for the
location of the required tapped holes. The following parts are required: keys 179, 180, and 181, figure 25.
4. Changing from a 3610JP to a 3611JP or a 3620JP to a 3621JP requires a positioner adaptor (key 113, figure 29). Use
four socket head screws (key 54, figure 29) to mount the adaptor.
5. Changing from a 3611JP to a 3610JP or a 3621JP to a 3620JP requires the following feedback parts: keys 38, 39,
and 60, figure 28.
6. Changing from a 3611JP to a 3610JP or a 3621JP to a 3620JP requires a cam (key 82, figure 28). Two screws (key 83,
figure 28) mount the cam and a cam adjustment indicator (key 84, figure 28—used only with characterized cams B
or C). Refer to the Mounting 3610J, 3610JP, 3620J, and 3620JP Positioners procedures for correct cam mounting.
7. Changing from a 3611JP to a 3610JP or a 3621JP to a 3620JP may require additional feedback parts depending on
actuator type and size. Refer to keys 75, 76, 77, 99, and 171 in the parts list and figure 28 to determine if they are
required.
8. The range spring (key 150, figure 25) may need to be changed depending on actuator type and size. Refer to
tables 8 through 11 for range spring selection and hole position on the summing beam assembly for coarse span
adjustment.
9. The instrument gauge (key 80, figure 26) may need to be changed depending on the input signal. Apply sealant
(key 154) to the threads of the gauge.
Changing a 3610J to a 3611JP Positioner, Changing a 3620J to a 3621JP Positioner, or Vice Versa:
1. Change the feedback lever assembly (key 117, figure 28) by performing the Disassembling the Nozzle Assembly
and Assembling the Feedback Lever Assembly maintenance procedures.
2. The nozzle (key 116, figure 25) must be changed. Refer to the parts list for the correct nozzle assembly part
number. Refer to figure 7 to identify 3610J, 3620J, 3611JP, and 3621JP nozzles. Refer to the Disassembling the
Nozzle Assembly and Assembling the Nozzle Assembly maintenance procedures.
3. The supply and output gauges [keys 79 (not shown) and 81, figure 26] must be changed and possibly the
instrument gauge (key 80, figure 26) depending on the input signal. Apply sealant (key 154) to the threads of the
gauges.
4. Changing from a 3610J to a 3611JP or a 3620JP to a 3621JP requires the following feedback parts: keys 172, 173,
174, 175, 184 (585, size 100 actuator only), and 185 [585 actuator, size 51 through 102 mm (100 with 2 through 4
inch) travels only, see figure 29].
5. Changing from a 3610J to a 3611JP or a 3620J to a 3621JP requires installing a parallel flexure (key 179, figure 25).
The parallel flexure is not used on positioners for 585 size 100 actuators. Earlier 3611JP positioners do not have this
part. Therefore, the summing beam assembly (key 123, figure 25) or relay assembly (key 122, figure 25) or both
may be required if they are not drilled and tapped to accept this parallel flexure. The following parts are required:
keys 179, 180, and 181, figure 25.
6. Changing from a 3610J to a 3611JP or a 3620JP to a 3621JP may require a positioner adaptor (key 113, figure 28).
Use four socket head screws (key 54, figure 28) to mount the adaptor.
7. Changing from a 3611JP to a 3610J or a 3621JP to a 3620J requires the following feedback parts: keys 38, 39, and 60
in figure 28.
8. Changing from a 3611JP to a 3610J or a 3621JP to a 3620J, requires a cam (key 82, figure 28). Mount the cam with
two screws (key 83, figure 28) and a cam adjustment indicator (key 84, used only with characterized cams B or C,
figure 28). Refer to the Mounting 3610J, 3610JP, 3620J, and 3620JP Positioners procedures for correct cam
mounting.
9. Changing from a 3611JP to a 3610J or a 3621JP to a 3620J requires a pipe plug (key 78, figure 26) to plug output A.
Apply sealant (key 154) to the threads of the pipe plug.
10. The range spring (key 150, figure 25) may need to be changed depending on actuator type and size. Refer to
tables 8 through 11 for range spring selection and hole position on the summing beam assembly for coarse span
adjustment.
3610J and 3620J Positioners
September 2017
47