cashco 1000HP-5 Руководство по установке, эксплуатации и техническому обслуживанию - Страница 7
Просмотреть онлайн или скачать pdf Руководство по установке, эксплуатации и техническому обслуживанию для Контроллер cashco 1000HP-5. cashco 1000HP-5 14 страниц. Cryogenic pressure reducing regulator
Печатать страницу
a. Diaphragm setting too high. Pusher plate
stud (13) will lift the flat bar over 0.020".
b. Diaphragm setting acceptable. Bar lift ed
between 0.010"-0.020".
c. Diaphragm setting too low. Bar lifted less
than 0.010", or failed to be lifted.
4. The castle style stud nut (10) has six lo ca tions
per revolution to align the stud nut (10) slots
with the drilled hole through the pusher plate
stud (13). Each stud nut (10) slot rep re sents
a movement up/down of 0.010". NOTE: The
ideal di a phragm set ting is 0.015" high, and
better per for mance is usu al ly obtained when
the di a phragm is slight ly higher rather than
low er. As the mea sur ing of thousandths of
an inch is dif fi cult with such a procedure, it
is rec om mended that the "null" position be
found where the di a phragm (20) is flush with
the body (1) flange (bar ap prox i mate ly at
0.000"). Re move the push er plate stud (13),
rotate the stud nut (10) one or two slots CCW
to bring the setting to 0.015"-0.020" high.
5. Place cotter pin (15) through the slot/hole,
bend over ends.
6. Continue re-assembly per Sub-Section B.
Di a phragm Replacement, Step 14.
E. Trim Removal and Replacement:
1. Install body (1) horizontally in a vise with the
spring chamber (2) directed upwards, and the
body (1) held at the outlet end.
2. Use a box end wrench or socket, with a lever
length of at least 24 inches, and place it over
the hex surfaces of the cylinder (21). The
wrench should be rapped with a ham mer to
loosen.
3. Continue to unscrew cylinder (21) until
re moved. The piston (24) and piston col lar
(23) should come out by gravity with the
cylinder (21) removal.
Take precaution to not allow the piston (24) to fall from
within the cylinder (21); tip cylinder with hex end down.
NOTE: The Option 1000-17 piston spring and Op tion
1000-14 integral seat ring are stand ard with the
Option 1000-5 construction.
IOM-1000HP-Cryogenic
CAUTION
4. If an Option 1000 -17 piston spring (30)
is utilized, it also should be removed and
re placed at trim replacement.
5. Inspect inside surface of cylinder (21) at four
points:
a. Valve seat (21.2) ring erosion/wear on
seat ing surfaces. If wear is excessive,
con sid er utilizing Option1000-15, stel lited
seat sur faces.
b. Valve seat (21.2) wire drawing be tween
cylinder (21.1) and valve seat (21.2)
where pressed in. If wear exists here, an
Option 1000-14, integral seat, should be
uti lized as a replacement.
c. Flow induced wear at expansion zone
where fluid turns to enter the piston (24)
center.
d. Where the piston (24) ribbed guides bear
(guide zone).
If wear is significant at any of these points,
both cylinder sub-assembly (21) and piston
sub-assembly (24 or 24, 25 and 26) should be
replaced. (Cashco, Inc., does not rec om mend
attempting to replace the valve seat (21.2) by
pressing out and then re-pressing in. Cashco,
Inc., also recom mends that a cylinder (21)
and piston (24 or 24, 25 and 26) be replaced
as a set. Composition seat discs (25) may be
re placed in di vidu ally.)
CYLINDER SUB-ASSEMBLY (21) WITH
PISTON (24) – METAL SEATED
CONSTRUCTION
7