Rp10 R/E Valve R/R; Rp11 Srv R/R - CAIRE HELiOS Plus Technical & Service Manual

XI
Troubleshooting & Repair Procedures
RP10 – R/E Valve R/R
1. Remove the covers (RP4).
2. Remove the flexible urethane tube from the barbed fitting on
the R/E valve outlet arm. Use a 1/4 inch open-end wrench
to remove the barbed fitting.
3. Use an adjustable wrench to hold the R/E valve inlet arm
stationary. Use a 7/16 inch open-end wrench to remove the
gas withdrawal warming coil compression nut from the inlet
arm fitting.
4. Pull the gas withdrawal warming coil tube out of the fitting.
Figure 32: Gas Withdrawal Coil Removal
5. Use an adjustable wrench to hold the R/E valve outlet arm
stationary. Use a 1/2 inch open-end wrench to remove the
liquid withdrawal warming coil compression nut from the
outlet arm fitting.
6. Pull the liquid withdrawal warming coil tube out of the fit-
ting.
7. Use an adjustable wrench to hold the R/E valve inlet arm
stationary. Use a 1/2 inch open-end wrench to remove the
secondary relief valve.
8. Apply Teflon tape sealant to the threads of the SRV if
needed.
9. Install the SRV in the inlet arm port of the new R/E valve
and tighten it until snug.
10. Insert the gas withdrawal warming coil (smaller diameter
coil) tube in the R/E valve inlet arm fitting and finger tighten
the compression nut.
11. Insert the liquid withdrawal warming coil (larger diameter
coil) in the R/E valve outlet arm port and finger tighten the
compression nut.
12. Tighten both compression nuts using a 7/16 inch open-end
wrench on the nuts and an adjustable wrench on the R/E
valve arms.
13. Install the barbed fitting in the R/E valve outlet arm.
14. Install the flexible urethane tube on the barbed fitting.
NOTE: The R/E valve arms should face the container.
15. Replace the case (RP4).
RP11 – SRV R/R
1. Remove the covers (RP4).
2. Use an adjustable wrench to hold the R/E valve inlet arm
stationary.
RE Valve
3. Use a 1/2 inch open-end wrench to remove the SRV.
4. Apply Teflon tape to the threads of the new SRV.
5. Install the new SRV in the R/E valve inlet arm port.
Secondary Relief
Valve
6. Use an adjustable wrench to hold the R/E valve stationary.
7. Use a 1/2 inch open-end wrench to tighten the SRV until
snug.
CAUTION: High pressure hazard. Over tightening the SRV
can cause it to operate improperly. Do not over tighten the
valve. Always perform the SRV test (RP8) after installation.
8. Replace the outer case (RP4).
HELiOS Portables Technical Service Manual • PN 20562190 Rev E
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