Emerson Yarway Color-Port 4511N Инструкции по установке, эксплуатации и техническому обслуживанию - Страница 5
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YARWAY COLOR-PORT
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
5.4 Cleaning and Inspection of Parts
The semi-circular sealing surfaces in the gauge
body must be restored to as-new condition.
Care must be used to retain or restore the
controlled dimensions of the parts to maintain
the correct sealing forces as created by the
spring cones. Use the following steps for
cleaning and inspection of the parts:
(Number in parentheses refer to items in
Figure 3B)
1. Clean and dry the gasket sealing surface of
the gauge body. Use a solid-type stainless
steel wire-end brush, Yarway P/N 301160,
attached to an electrical drill. No damage
is permitted to the sealing surface. Inspect
carefully for marks or residual material,
above or below the surface that could cause
leakage.
2. Carefully clean and dry the contact surfaces
of the cover (2) inside and where it contacts
the gauge body. Clean the surfaces of
the gauge body contacted by the cover,
and clean the surface of the washer (5) to
remove all traces of the cushion gasket (6).
3. Inspect the condition of the cover (2) for
distortion due to previous over-tightening
of bolts or indentation from spring cone
contact. Place the cover over its contact
surface on the body. The cover and body
must make firm, flat contact. Manually
check for rocking of the cover on the body
surface. Replace cover if damaged.
4. Inspect the condition of the gauge body for
evidence of previous over-tightening of bolts.
Check the gasket seal surface for cleanliness
and polished finish. Contact Yarway if
damage is found on the gauge body.
5. Inspect the spring cones. Replace them
if they are damaged or corroded or if the
spring cones stack height is below .285 inch
(7.25mm). See Figure 3A.
6. Inspect the replacement parts. A repair port
kit, Yarway P/N 7Y584-000, is furnished as a
package consisting of a glass (3), mica (9),
sealing gasket (11), held together in a clip
ring (7), plus a cushion gasket (6).
7. The replacement parts are clean and dry as
supplied. Handle the kit by holding it on the
outer diameter; avoid touching the face of
the mica or permitting moisture, dirt, chips,
or other foreign matter to adhere to the
parts. Cleanliness and dryness of the parts
are most important.
WATER LEVEL GAUGES & WELBLOC
®
FIGURE 3A
4-bolt design (2 spring cones)
5.5 Reassembling the Port
CAUTION
Grease, dirt, finger-prints and moisture will affect
port life visibility.
(Numbers in parentheses refer to items in
Figure 3B)
1. Lightly lubricate the cap screw (10) threads
with high temperature anti-seize compound.
2. Properly orient spring cone(s) (4) into the
cover (2). See Figure 3B. Note that the
conical shape touches the cover on the large
diameter and makes contact with the flat
washer (5) on the smaller inside diameter.
3. Place the flat washer (5) on top of, and in
contact with spring cone(s) (4).
4. Place the cushion gasket (6) in contact with
the flat washer (5).
5. Install the retaining spring (8) into the cover.
See Figure 3B.
6. Taking the repair kit as an assembly (glass,
mica, sealing gasket, and clip ring) insert
it directly into the retaining spring and into
contact with the cushion gasket (6). See
Figure 3B and Figure 4.
7. Inspect for assurance of proper assembly
and clean parts. The sealing gasket (11)
should be firmly centered in the clip ring (7).
Caution: handle the glass, mica, gasket and
clip ring assembly by the edges only. When
installing, do not touch or apply pressure
directly on the gasket or mica.
8. Keep moisture from entering between the
mica and the glass to prevent premature
failure.
9. Reassemble the viewing port assembly,
centering the sealing gasket in the body
groove. Locate the vent in the horizontal
direction, toward the narrow side of the
gauge body.
10. Tighten the cap screws (10) uniformly with
⅜" socket wrench until metal-to-metal
contact is just made, then tighten to 22 - 25
ft•lb (29.8 - 33.9 N•m). Do not use a power
wrench. Further tightening may damage the
cap screws, body or cover.
GAUGE VALVES
®
.285" minimum
(7.25 mm)
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