COPES-VULCAN INSTRUCTION MANUAL
MODEL 700 DIRECT-ACTING ACTUATOR
Rev.5 (08/10) Page 13 of
20 Form 01:P224:37
3.3 DIRECT-ACTING ACTUATOR
(Refer to Figure 1 and the Actuator Assembly Drawing)
3.3.2 Assembly (Cont’d.)
I. Drill holes in the yoke as directed by the assembly drawing, then install the indicator plate
(Item 8) and ID plate (Item 19) using drive screws (Item 20).
J. Apply preload to the spring by rotating the spring adjuster.
K. Cycle the actuator slowly several times to verify that no binding occurs during operation.
Pressurize the actuator from 80 to 100 psig (5.5 to 7 bar) and check for leaks. Binding, noise
or leakage is not acceptable.
3.4 TOP-MOUNTED HANDWHEEL ASSEMBLY
(Refer to Figure 2)
3.4.1 Disassembly
A. Remove the hex nuts and lockwashers (Items A4 and A5). Remove the housing (Item A3).
B. If necessary, remove the gasket (Item A2).
C. Remove the retaining ring (Item A10), then remove the thrust base (Item A9) and thrust
washer (Item A8).
D. If necessary, remove the handwheel (Item A14) and key (Item A13) by first removing the
upper retaining ring (Item A12).
E. Remove the actuator stem (Item A7) from the housing (Item A3).
F. Remove the U-cup seal (Item A6) from the housing.
G. Proceed with actuator disassembly per Paragraph 3.3.1, if required.
3.4.2 Assembly
A. Assemble the actuator per Steps A through F in Paragraph 3.3.2.
B. Apply gasket compound (CV P/N 197077 or equivalent) to both surfaces of the gasket
(Item A2), then place the gasket onto the cover assembly (Item A1).
C. Place the thrust washer (Item A8) and thrust base (Item A9) on the actuator stem (Item A7),
then install the retaining ring (Item A10).
D. Apply o-ring grease to the U-cup seal (Item A6). Install the U-cup seal in the housing
(Item A3) with the ‘U’ facing down.
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