page 19
the spring cap and turn it so that the inside portion is facing up. You will see an O-ring
(1120KIT-3) and a smaller hex opening(1120KIT-2). Using an O-ring tool remove the O-
ring and set it aside. Use a 5/8 socket
wrench to remove the hex valve car-
tridge (1120KIT-2). Set this aside. (see
figure 42).
16.5.1. Part # 1120KIT1 has a seat and
O-ring in its flat end. These are normal-
ly factory installed. If they are loose see
figure 45 for assembly.
16.6. Clean all parts with a clean soft lint-
free cloth. If there is dirt that does
not come off with a cloth, you can wash the parts in a mild detergent (no perfume) and hot
water, rinsing with clear hot water, then blow dry or allow to air dry. Ultrasonic cleaning is
acceptable using a mild detergent solution and a clear water rinse.
16.7. Once the parts have been cleaned and dried, reassemble in reverse order using the new
parts provided in the 5-year maintenance kit for regulator repair. Lubricate all moving parts
with an approved O-ring lubricant (Christo-lube).
16.8. Tighten all parts snug with a wrench but avoid using excessive force.
16.9. Reinstall regulator into panel, using the reverse order of 16.1. Do not reinstall acorn nut.
16.10. Reinstall cylinders per 11.6 through 11.9.
16.11. Test plumbing for leaks per 14.8. Fill system to 4500psi, and adjust regulator with the
following procedures:
16.11.1. Loosen set screw with a 3/16” Allen wrench.
16.11.2 Open cylinder (CYL1) to pressurize inlet side of regulator, with fill valves closed.
Use caution to not overpressurize gauge.
16.11.3 Turn the set screw clockwise until the regulated pressure reads 3000psi. Hold
one fill hose, and open and close the fill valve.
16.11.4. Verify that the regulated pressure gauge reads 3000psi. If it does not, turn the
set screw clockwise to increase; counterclockwise to decrease.
16.11.5. Open/release the fill valve; install the acorn nut, and verify the pressure reading.
16.12. Once plumbing is leak free and regulator is adjusted, reinstall the unit into the case, refill
with air and return to service.
1120KIT-1 DETAIL
figure 45
1120KIT1--1*
PISTON
1120KIT1--3*
SEAT
1120KIT1--2*
O-RING
*Not available as separate parts
Summary of Contents for MRS III
Page 6: ......
Page 30: ...Illustrated Parts Breakdown Mobile Refill System III 100701 FRONT OF UNIT page 24...
Page 31: ...SIDE VIEW page 25...
Page 43: ...MRS III FLOW DIAGRA M page 37...
Page 44: ...page 38...
Page 45: ...page 39...
