Emerson Fisher Type 289P Інструкція з експлуатації - Сторінка 6
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Також для Emerson Fisher Type 289P: Посібник з монтажу (4 сторінок), Посібник з монтажу (4 сторінок)
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Type 289P
Assembly
1. Replace the O-ring (key 37). Slide the lower O-ring
(key 30), O-ring washer (key 22), O-ring (key 20),
O-ring holder (key 21), upper O-ring (key 30), bushing
(key 23), stem guide assembly (key 31), gasket
(key 19), and washer (key 27) on to the pitot tube
(key 18).
2. Slide the diaphragm head (key 3) and lower spring
guide (key 17) into the pitot tube. Tighten the hex
nut (key 24).
3. Replace machine screws (key 29).
4. Position the diaphragm (key 5) so the holes line up
with those in the body (key 1).
5. Replace the spring (key 7), spring seat (key 4),
and spring case (key 2).
6. Compress the spring slightly with the adjusting
screw (key 6) to ensure there are no wrinkles in
the diaphragm.
7. Tighten the screws (key 8) in a crisscross pattern.
Tighten the adjusting screw (key 6) until it is snug.
nPS 2 Type 289P Main Valve
This procedure is to be performed if inspecting,
cleaning, or replacing the main valve parts. Key
numbers and thread lubrication requirements are
indicated in Figure 5.
The body (key 1) may remain in the
pipeline during maintenance. The pilot
control line and, if used, the remote
vent piping must be removed before
removing the main valve spring case.
1. Remove the closing cap (key 14), and loosen
the adjusting screw (key 6) to remove
spring compression.
2. Unscrew the cap screws (key 8), and remove the
spring case (key 2) and spring (key 7).
3. Lift the edges of the diaphragm (key 5), and remove
the machine screws (key 29), securing the stem
guide assembly (key 31).
4. Remove the stem guide assembly. The diaphragm
assembly (keys 3, 17, 5, and 26) and the pitot tube
(key 18) and associated parts (keys 19, 22, 23, 11,
and 25) will lift out with the stem guide assembly.
6
note
5. Inspect the parts removed in step 4. If part
replacement is necessary, unscrew the hex nut
(key 11), and separate the parts one piece at a time.
6. Assemble the parts using new gaskets (key 19).
Also replace the diaphragm (key 5), if necessary.
During assembly, use lubricants or sealants on the
parts indicated in Figure 5. The following parts are
listed in the order with which they are placed on the
pitot tube (key 18):
• One gasket (key 19)
• O-ring washer (key 22)
• Another gasket (key 19)
• Stem guide assembly (key 31) secured
with screws (key 29)
• The third gasket (key 19)
• Lower diaphragm plate (key 26)
• Diaphragm (key 5), install pattern side up,
toward the spring (key 7)
• Diaphragm plate (key 3)
• Lower spring seat (key 17)
• Hex nut (key 11) Tighten the hex nut.
7. Inspect the O-ring (key 20) and orifice (key 10).
To replace the orifice, remove the O-ring and
unscrew the orifice from the body (key 1). If only
the O-ring (key 20) is to be replaced, leave the
orifice in the body (key 1). Coat the threads of the
orifice with sealant, and screw it into the body. Coat
the O-ring with a lubricant, and place the O-ring in
the orifice.
8. Position the diaphragm assembly and stem guide
assembly in the valve body (key 1) so that the
O-ring washer sits squarely on the O-ring and so that
the machine screw holes in the stem guide assembly
match the holes in the valve body. Insert and tighten
the machine screws (key 29).
9. Turn the diaphragm to line up with the spring case
cap screw holes.
10. Place the spring case (key 2) on the valve body.
Insert and tighten the cap screws (key 8).
11. Place the spring (key 7) on the lower spring seat.
12. Coat the adjusting screw (key 6) threads with a
suitable anti-seize compound. Thread the screw
into the spring case until top of adjusting screw is
1-inch (25 mm) above the spring case.