Service
CGA Connection
Part Number
Inert (N2, Ar)
CGA 295
GL50-8C60
Read the Safety Precautions in the front of this manual before attempting any repairs on
these containers. Also follow these additional safety guidelines while performing con-
tainer maintenance.
Never work on a pressurized container.
Open the vent valve as a standard practice
during maintenance to guard against pressure build-up from residual liquid.
Use only repair parts cleaned for oxygen service
. Be certain your tools are free of oil
and grease. This is a good maintenance practice, and helps ensure you do not create a
combustion hazard when working on containers for oxygen or nitrous oxide service.
Leak test connections after every repair.
Pressurize the container with an appropriate
inert gas or leak testing. Use only approved leak test solutions and follow the manufacturer’s
recommendations. “Snoop” Liquid Leak Detector is one approved solution, it is available
from: Nupro Co. 4800 E. 345th St. Willoughby, Ohio 44094 U.S.A.
CONVERTING A CONTAINER TO A DIFFERENT GAS SERVICE
XL-45/50/55 cylinders may be converted from one service to another within the confines of
the argon, nitrogen, and oxygen service for which the containers are designed. Conver-
sion consists of changing the end connections at the USE, LIQUID, and VENT valves;
then changing the liquid level gauge scale by changing its plastic cover; and revising
product decals. Parts are available in kit from for each gas service as illustrated in the
following table.
Service Change Procedure
Before removing any parts, empty the container and open the vent valve to prevent any
pressure build-up in the unit.
1. Remove the LIQUID, VENT, and USE end fittings, one at a time, with standard wrenches.
Install new fittings from the Gas Service Change Kit, using Teflon tape or another
oxygen-compatible thread sealant.
2. Remove the protective cover over the liquid level gauge. Replace the contents scale
with the scale for the new gas service from the service change kit, then replace the
protective cover.
3. Install new fittings for the USE, VENT, and LIQUID connections from the Gas Service
Change Kit. Leak test the fittings you just replaced, and change the gas service de-
cals to complete the conversion.
MAINTENANCE
PROCEDURES
WARNING:
For the O
2
System
Users: Residue of leak
detectors solutions
can be flammable. All
surfaces to which the
leak detector solutions
have been applied
must be adequately
rinsed with potable
water to remove all
traces of residue.
Reference CGA G-4.
Section 4.9.
