Rp13B Liquid Withdrawl Warming Coil R/R (H850) - CAIRE HELiOS Plus Technical & Service Manual

XI
Troubleshooting & Repair Procedures
RP13B – Liquid Withdrawal Warming Coil R/R (H850)
1. Remove the covers (RP4).
2. Remove the flexible urethane tube from the barbed fitting on
the R/E outlet arm.
3. Remove the flexible urethane tube from the barbed fitting on
the side of the vent valve.
4. Cut and remove the two zip ties (if present) that secure the
liquid withdrawal coil to the gas withdrawal coil at the top
of the cryogenic container.
5. Use a 3/8 inch open-end wrench to hold the R/E valve outlet
arm (with barbed fitting) stationary. Use a 1/2 inch open-end
wrench to remove the liquid withdrawal coil compression
nut from the R/E valve fitting.
6. Use a 3/8 inch open-end wrench to hold the fitting on the
stainless steel container tube stationary. Use a 1/2 inch open-
end wrench to remove the liquid withdrawal compression
nut from the fitting.
7. Pull the ends of the warming coil from their fittings.
8. Remove the warming coil.
9. Remove the two plastic insulator wraps from the warming
coil (if present) and save them for use on the replacement
coil.
Insulator
Wraps
Figure 34: Insulator Wrap Locations
10. Replace the liquid withdrawal coil by reversing steps 1-9.
NOTE: Make sure to route the 1/8 in flexible urethane vent
tube through the inside of the warming coil positioned directly
below the vent valve.
NOTE: Install the two plastic insulator wraps on the new
warming coil at the locations shown in Figure 46.
HELiOS Portables Technical Service Manual • PN 20562190 Rev E
42