4322
Service Manual
6-4
Visual Inspection
The visual inspection makes sure the Cylinder is in good operating condition before it is
used. Never use the Cylinder if it shows signs of corrosion, gouges, indents, bulges, heat
damage or if it has been dropped or otherwise damaged.
Visually inspect the Cylinder before use as follows:
1.
Check to make sure the Cylinder has been hydrostatically tested in the last 5 years.
2.
Check the internal pressure to make sure it is within proper range (500 psig to
2,000 psig).
3.
Check for leaks. In the unlikely event that a leak is detected, under no circumstances
should the cylinder be re-filled until repaired.
External Cylinder Cleaning Procedure
Clean the outside of the Nitrogen Cylinder with soap and water, a solvent wipe, or a
nonmetallic scrub pad.
Warning
To prevent damage to the project or personal injury, make
certain that the cleaning product used is specifically marked
with “suitable for aluminum”.
Internal Cylinder Cleaning Procedure
Clean the inside of the Nitrogen Cylinder as follows:
Warning
To prevent personal injury, keep the threads and inside of the
cylinder dry and free from oil, dirt or other contaminants.
For oil, grease, and lubricants
:
Note
Complete the process without a break. Never leave cylinder freestanding
with water.
1.
Mix together 1 tablespoon of liquid dish wash detergent to 1 gallon of tap water to
make a soapy solution.
2.
Pour the soapy solution into the cylinder and shake to agitate the water.
3.
Rinse several times with tap water then rinse twice with demineralized or soft water.
4.
Steam clean and dry the cylinder with clean compressed air.
Caution
To prevent damage to the product, make sure the cylinder is
completely dry before installing the regulator.
For corrosion
:
1.
Mix together two to three cups of aluminum oxide tumbling chips to two quarts of
soft water and one teaspoon of liquid washing detergent.
2.
Pour the oxide chip mixture into the cylinder.
3.
Use a tumbling machine to tumble the cylinder at 25 to 35 rpm for 10 minutes with a
wet detergent aluminum oxide chip combination.
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