Replacing The Loader Range Spring, Diaphragm Assembly, Ball Seat, Tubing, And Ball - Emerson Fisher KC Series Instruction Manual

Instruction Manual
Form 5207
April 2007
In the following step, the ends of the
springs must be in the counterbored
spring seats before compression.
5. Compress the switch body springs with the
loader assembly (key 282), and bolt the switch body
assembly (key 291) to the loader assembly with the
two screws (key 290).
6. Reconnect the tubing assembly (key 309).
7. Locate the lever spring (key 302) and the spring
seat (key 301) on the switch lever (key 304) and
position these parts in the opening of the loader
assembly (key 282).
8. Push the switch lever down, using the lever
spring seat (key 301) and the lever assembly (key
297) to preload the spring. Make sure the notch of
the switch lever engages the pin of the lever
assembly.
9. Drive in the groove pin (key 303) to hold the
switch lever.
10. Replace the lever cover plate (key 305) and
attach with two screws (key 288).
11. Perform the assembly portion of the replacing
the auto/manual station procedure.
Replacing the Loader Range Spring,
Diaphragm Assembly, Ball Seat, Tubing,
and Ball
WARNING
Refer to the Maintenance WARNING
on page 6-1.
Refer to figure 7-7 for key number locations.
Disassembly
1. Remove the auto/manual station from the
controller as described in steps 1 through 4 of the
replacing the auto/manual station procedure.
2. Remove the tubing assembly (key 309).
WARNING
To avoid personal injury caused by
preload from the range spring (key
283), turn the loader knob (key 287)
counterclockwise (opposite to the
4195KA, KB, KC, and KS Controllers
Note arrow) to relieve pressure on the
spring.
3. Loosen the four screws (key 289), and separate
the upper loader assembly (key 282) and the lower
loader assembly (key 274).
4. Remove the loader range spring (key 283), range
spring cup (key 284), and diaphragm assembly (key
281).
5. Remove the tube (key 278), ball seats (key 280)
and ball (key 279).
Assembly
1. Turn the loader knob (key 287) counterclockwise
to back the spring adjustment screw (key 285) all
the way out to eliminate loading the range spring.
2. Position the range spring cup (key 284), range
spring (key 283), and the diaphragm assembly (key
281) on the upper loader assembly (key 282).
3. Position the ball (key 279), the tube (key 278),
and the ball seats (key 280) between the ears of the
loader assemblies (keys 282 and 274); position the
diaphragm assembly (key 281) between the main
halves of the loader assemblies.
The tube (key 278) must be well seated
in the cups of the ball seats (key 280).
4. Bolt the loader assembly halves together using
the four screws (key 289).
Be sure that the supply and exhaust
seats of the loader are correctly
aligned. Misalignment will impair
loader performance.
5. Attach the tubing assembly (key 309).
6. Perform the assembly portion of the replacing the
auto/manual station procedure.
Note
Note
6-43