IOM-SLR-2
3
9. Develop system flow to a level near its expected
normal rate, and reset the pressure for the main
regulator to the desired outlet pressure by adjust-
ing the knob on the loading regulator.
SECTION VI
10. Reduce system flow to a minimum level and
observe pressure set point. Outlet pressure
will rise from the set point of Step 9 for a Model
SLR-2. The max i mum rise in outlet pres sure on
de creas ing flow should not exceed the 10%. If
it does, consult factory.
VI. SHUTDOWN
1. On systems with a bypass valve, fully close the inlet
(up stream) block valve. Allow the pressure to the
loader, the cover dome and the main regulator to
decrease to zero. Close the outlet (down stream)
block valve. Slowly open the bypass valve.
(When on bypass, the sys tem pres sure must be
con stant ly observed and man u al ly reg u lat ed.
VII. MAINTENANCE
A. General:
Item Dynamic
No.
Seal Type
Part Description
13
..................... All
.....................................Guide
Bearing
14 ..................... All ................................. Static Stem 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,
................................................. Wiper
17.1
.................CW,
.................................... Wiper Washer
17.3..................
UC.......................................Seal Retainer
19
..................... All
................................................... Cage
20
..................... All
...........................................Valve
Plug
21
..................... All
............................................ Seat
Ring
27 ..................... All ............................. Dynamic Side Seal
27.1 .............. CW .................................... TFE Cap Seal
27.2
..............
CW
........................ O-ring Energizer/Seal
27.3 .............. UC .......... U-Cup Seal w/Metal Energizer
27.4
.............. OR
....................................... O-Ring
Seal
SECTION VII
A detailed view of the dynamic side seal parts
is shown in Figure 1 on the next page.
NOTE:
On regulators originally supplied
as “oxygen clean” – Opt-55, maintenance
must include a level of cleanliness equal to
Cashco cleaning standard #S-1134.
5. The Inner Trim Assembly (Figure 3) 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:
1. The SLR-2 may be serviced without re mov-
ing the regulator from pipeline. The main
reg u la tor is designed with quick-change trim
to simplify maintenance.
2. Record the nameplate information to req-
ui si tion repair parts for the regulator. The
in for ma tion should include: size, 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 dis-connected.
3. Refer to Section X for recommended repair
parts. Only use original equipment parts
sup plied by Cashco for re build ing or re pair-
ing reg u la tors.
4. Owner should refer to owner's procedures
for removal, handling, cleaning and disposal
of nonreusable parts, i.e. gaskets, etc.
WARNING
SYSTEM UNDER PRESSURE. Prior to per form ing any
maintenance, isolate the reg u la tor from the system and
relieve all pressure. Failure to do so could result in
personal injury.
Do not walk away and leave a bypassed regulator
unattended.
CAUTION
