cashco 1465 Посібник з монтажу, експлуатації та технічного обслуговування - Сторінка 4
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bear ing (15), upper bearing washer (16), and
lower bearing wash er (17) on top of the range
spring (10).
11. Apply an appropriate lubricant to the threads
of the spring chamber (2). Reverse Steps
B.2 and B.3 to complete assembly. Tighten
spring cham ber (2) to body (1) with a 30-35
Ft-lbs torque value.
12. Pressurize with air and spray with liquid leak
detector to test around body (1) and spring
cham ber (2) for leak age. En sure that an outlet
pressure is main tained dur ing this leak test of
at least mid-range spring level; i.e. 125-200
psig (8.6-13.8 Barg) range spring, 163 psig
(11.2 Barg) test pres sure min i mum.
C. Trim Inspection:
1. Trim inspection requires that the diaphragm(s)
be re moved. Refer to pre vi ous procedure
Sec tion VI.B, steps 1 through 7.
2. Remove body (1) from vise and secure a
screwdriver, tool end up, in vise. Set body (1)
so as to engage screwdriver into slotted end of
the plug (3) from the body (1) inlet con nec tion
and hold firm.
3. Remove pusher plate (6). Looking down into
the body (1) cavity, use a slotted tool to push
down on the spring seat (5) and slip sideways
to dis en gage (through slot) from plug (3).
4. Remove spring seat (5) and plug spring (4).
5. Grasp plug (3) while carefully lifting body (1).
Remove plug (3) from body (1) inlet, taking
care not to allow plug (3) to drop out.
6. Inspect integral seat in body (1). If seat shows
erosion or wear, re place regulator.
VII. TROUBLE SHOOTING GUIDE
1. Erratic operation; chattering.
Possible Causes
A. Oversized regulator; inadequate
rangeability.
B. Cavitation
4
7. Clean debris from within body (1) cavity.
8. Inspect spring seat (5), plug spring (4) and
9. Lap plug (3) with lapping compound by
10. Reverse steps 1 through 5 for reassembly.
11. Bench test unit for suitable operation. NOTE:
12. Pressurize with air and spray with liquid leak
SECTION VII
A1. Check actual flow conditions, re-size regulator for minimum and
maximum flow.
A2. Increase flow rate.
A3. Decrease regulator pressure drop; decrease inlet pressure by
placing a throttling orifice in inlet piping union.
A4. Install next step higher range spring. Contact factory.
A5. Before replacing regulator, contact factory.
B. Use multiple 1465's in series to stage the pressure drops. Refer
to 1465 Technical Bulletin for water cavitation chart.
Clean parts to be reused according to
owner's pro ce dures. NOTE: On reg u la tors
originally sup plied as "oxygen clean", Op tion
1465-55 main te nance must in clude a level of
clean li ness equal to Cashco's clean ing spec.
#S-1134. Contact factory for details.
plug (3). If worn, nicked or depressed, re place
regulator.
in sert ing it back up into the body (1) inlet
and hold firm. Engage a screwdriver into the
slotted end of the plug (3) from the body (1)
inlet and rotate plug (1) back and forth in a
circular motion. Do not overlap. Clean lapping
com pound on plug (3) and in body (1).
NOTE: When reassembling plug (3), plug
spring (4), and spring seat (5), be sure that
this "assembly" is centered into the body (1)
cav i ty to ensure proper seating of plug (3).
Apply an appropriate lubricant to the threads
of the spring chamber (2). Tighten spring
cham ber (2) to body (1) with a 30-35 Ft-lbs
torque value.
Reg u la tors are not tight shut off devices.
Even if pres sure builds up beyond setpoint,
a reg u la tor may or may not de vel op bubble
tight shut off.
detector to test around body (1) and spring
cham ber (2) for leakage. Ensure that an outlet
pressure is main tained during this leak test of
at least mid-range spring level; i.e. 125-200
psig (8.6-13.8 Barg) range spring, 163 psig
(11.2 Barg) test pres sure minimum.
Remedies
IOM-1465