Cashco DA1 - Manual (Page 3)

3 IOM-DA1
9. Develop system fl ow to a level near its expected
normal rate, and reset the regulator set point by
turning the adjusting screw CW to increase outlet
pressure, or CCW to reduce outlet pressure.
10. Reduce system fl ow to a minimum level and ob-
serve pressure set point. Outlet pressure will rise
SECTION VI
VI. SHUTDOWN
1. Shutoff inlet block valve.
2. Allow suffi cient time for the line pressure down-
stream of the inlet block valve to bleed down.
3. Shutoff the outlet block valve.
4. Relieve the trapped upstream and downstream
pres sure.
5. The regulator may now be removed from the
pipe line or disassembled for inspection and pre-
ven ta tive main te nance while in-line.
VII. MAINTENANCE
A. General:
1. The regulator may be serviced without re-
mov ing the regulator from pipeline. The
regulator is designed with quick-change trim
to simplify maintenance.
2. Record the nameplate information to req-
ui si tion spare parts for the regulator. The
in for ma tion should include: size, KM Product
Code, Serial Number, and internal or ex ter nal
sens ing. (NOTE: Never both types of sens-
ing.) If external sensing is used, be sure that
the external sensing line is connected.
3. Refer to Section IX for recommended spare
parts. Only use original equipment parts sup-
plied by Cashco/KM for re build ing or re pair ing
regulators.
4. Owner should refer to owner's procedures for
removal, handling, cleaning and disposal of
nonreuseable parts, i.e. gaskets, etc.
NOTE: On regulators originally suplied as
Special Cleaning Option-55, -56, or -57,
maintenance must include a level of cleanli-
ness equal to Cashco cleaning standards of
#S-1134, #S-1542, and #S-1589 respectively.
Con tact factory for details.
Item Dynamic
No. Seal Type Part Description
13 ..................... All ..........................Guide Bearing/Piston
14 ..................... All .................................. StaticStem Seal
14.1 ............... All ...................... Upper Static Stem Seal
14.2 ............... All ......................Middle Static Stem Seal
14.3 ............... All ...................... Lower Static Stem Seal
15 ..................... All ................................ Cage O-ring Seal
16 .................CW,PW .............................................. Wiper
17.1 ..............CW,PW ................................. Wiper Washer
17.2 ........... OR,CP,PR ........ Camber Adjusting Washer *
17.3 ................. UC ..................................... Seal Retainer
19 ..................... All ................................................... Cage
20 ..................... All ...........................................Valve Plug
21 ..................... All ............................................ Seat Ring
27 ..................... All ............................. Dynamic Side Seal
27.1 ........... CP,CW ................................. TFE Cap Seal
27.2 ...........CP, CW ..................... O-ring Energizer/Seal
27.3 .............. UC .......... U-Cup Seal w/Metal Energizer
27.4 .............. OR ....................................... O-Ring Seal
27.5 ........... PR,PW ............................. Piston Ring Seal
27.6 ........... PR,PW ............. Piston Ring SST Energizer
* Metal Diaphragm Only.
SECTION VII
5. The Inner Trim is re moved and replaced in the
body ( 23) as an assemblage of parts. The
Inner Trim Assembly, here in af ter called ITA,
consists of the following parts:
A detailed view of the dynamic side seal parts
is shown in Figure 1 on the next page.
from the set point of Step 9. The maximum rise
in outlet pressure on decreasing fl ow should not
exceed the stated up per value of the range spring
by greater than 10%. If it does, consult factory.