Emerson KEYSTONE OPTISEAL F14, Инструкция по установке и обслуживанию

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KEYSTONE OPTISEAL F14/16 - 15/17 AND BREWSEAL BUTTERFLY VALVES
INSTALLATION AND MAINTENANCE INSTRUCTIONS
5 MAINTENANCE BUTTERFLY VALVES FIG. 15/17
The Keystone butterfly valve figure 15 and 17
are designed to require a minimum of
maintenance.
WARNING!
See section 4!
5.1 Routine maintenance
See section 4.1
5.2 Removing the valve from the pipe system
See section 4.2
5.3 Valve disassembly
1. Turn the disc to almost open position.
2. Remove actuator.
3. Remove the disc screw with the O-ring.
4. Pull the shaft out of the body.
5. Remove the disc by pulling or ‘rolling’ out
of the seat bore.
6. Remove the seat from the body: pry under
both seat edges at one point, collapse
the seat into the shape of a round bottom
heart configuration and pull the seat out
of the body bore.
7. Remove circlip and pull the plug, containing
an O-ring, out of the body.
8. Remove the O-ring from the plug.
9. Remove the dirt scraper and bushing from
the body top neck.
5.4 Valve assembly
1. Clean all parts.
2. Insert the bushing in top neck.
3. Collapse the seat in the shape of a round
bottom heart firmly place the ‘bottom’
part of the seat into position in the body.
Align the holes in the seat properly with
the holes in the body.
4. Insert the shaft with sufficient (silicone)
grease so far that it protrudes
approximately
10 mm into the inside bore of the seat.
Install the disc, with the disc screw holes
toward the actuator flange, by inserting
the disc in the seat with the shaft bore
on the topside against the shaft, leaving
the bottom part of the disc just outside
the seat. Push the bottom part of the disc
in place with a twisting motion.
5. Insert the shaft completely using a rotating
pressure on the shaft, and a rotating motion
on the disc. Pay special attention in order
that the seat is not damaged due to any
misalignment of stem holes.
6. Align the counter-drilled position of the
stem screw holes. Place the O-ring on
the disc screw. Install the disc screw
and tighten securely.
7. Place the O-ring onto the plug. Place the
plug into the body and position it with a
circlip.
8. Assemble the dirt scraper.
9. Mount the actuator.
5.5 Re-installing the valve
See section 3.3.1