Emerson Fisher 667 Instruction Manual page 11

Instruction Manual
D100311X012
Figure 4. Size 80 Actuator Construction
CAP SCREW (KEY 12)
SPACER (KEY 2)
UPPER DIAPHRAGM
CASE (KEY 1)
DIAPHRAGM (KEY 3)
LOWER DIAPHRAGM
PLATE (KEY 71)
CAP SCREW (KEY 30)
GASKET (KEY 70)
TRAVEL STOP (KEY 84)
SEAL BUSHING (KEY 7)
50A8597‐D
SPACER (KEY 2)
UPPER DIAPHRAGM
PLATE (KEY 4)
DIAPHRAGM (KEY 3)
LOWER DIAPHRAGM
PLATE (KEY 71)
TRAVEL STOP (KEY 84)
50A8599-C
C0772 / IL
7. For actuators without a snubber, install the seal bushing (key 7) into the spring case adaptor (key 89) followed by
the snap ring (key 72). Replace the seal bushing O‐rings (keys 8 and 9) as required.
8. Coat the gasket (key 70) with lithium grease lubricant (key 237). Position the lower diaphragm casing (key 64) on
the spring case adaptor, and secure with cap screws (key 30).
9. Mount the lower diaphragm plate, diaphragm, upper diaphragm plate, and, if used, spacer (keys 71, 3, 4, and 2) on
the actuator stem (key 144), and secure using the cap screw (key 12). Coat the cap screw threads with lithium
grease (key 237). Tighten the cap screw (key 12) to 544 NSm (400 lbfSft).
Note
Standard and top‐loaded constructions use the same key numbers for parts. The parts look different, but they use the same
assembly and disassembly sequence. See figure 4, Size 80 Actuator Construction.
STANDARD DIAPHRAGM CONSTRUCTION
TOP LOADED DIAPHRAGM CONSTRUCTION
667 Size 80 and 100 Actuators
May 2011
VENT ASSEMBLY (KEY 17)
UPPER DIAPHRAGM
PLATE (KEY 4)
CAP SCREW (KEY 13)
HEX NUT (KEY 14)
LOWER DIAPHRAGM
CASE (KEY 64)
PIPE BUSHING (KEY 92)
SNAP RING (KEY 72)
O‐RING (KEY 9)
O‐RING (KEY 8)
PIPE BUSHING (KEY 78)
CAP SCREW (KEY 12)
11