Robinair 16910 ID Plus Refrigerant Identifier - Manual (Page 23)

21
Maintenance
Sample Hose Inspection and Cleaning
Inspection Frequency: Inspect sample hoses before and after each use of the instrument
and after every replacement of the sample filter.
What to Look For: Inspect the inside diameter of the inner tube for signs of oil buildup,
dirt, obstructions, kinks, cuts, fraying, or any other signs of wear. Oil contamination can
be cleaned out of the sample hoses as directed below. Hoses that show signs of wear
should be replaced immediately to avoid danger of rupture or bursting.
Sample Hose Cleaning Procedure:
1. Remove the hose from the instrument and flush it with isopropyl alcohol or methanol
until the oil is thoroughly cleansed from the inner tube.
WARNING
To prevent personal injury, flush hoses away from sparks, open flames
or other ignition sources and in an area that is well ventilated.
2. Dry the hose by blowing clean, dry nitrogen or shop air through the inner hose, or by
allowing the hose to air-dry for several hours. Do not dry the hose with shop air that is
lubricated.
3. When the hose is completely dry, reinspect the hose for signs of wear, as described
above, and replace the hose if wear is evident.