3.3
Replacing the Brass Sample Hose Restrictor
In either Vapor Sampling or Liquid Sampling mode always inspect the inside diameter of the
tube for signs of oil build up, dirt, obstructions, kinks, cuts, fraying, or any other signs of wear
before use. Oil contamination cannot be cleaned out of sample hoses due to the density of
the brass oil restrictor. If oil is visible in the hose assembly, replace the Brass Sample Hose
Restrictor Assembly.
NOTE:
The analyzer
will indicate “Non-Condensable” or “Unknown Refrigerant” if the
analyzer does not receive a good sample due to obstructed flow or lack of flow (approximately
less than 30 psig or 2 Bar). If this occurs the Brass Sample Hose Restrictor may need to be
replaced.
To replace the Restrictor Assembly, follow the instructions below:
1)
Disconnect the sample hose from the Analyzer
2)
Remove the brass restrictor (with hose attached) from the coupler and
discard. Be sure to use a backing wrench as not to damage the
coupler.
3)
Check for signs of oil and debris in the coupler.
4)
Using “CRC Brakleen” or similar cleaner which ONLY contains,
Tetrachloroethylene and carbon dioxide, follow safety instructions on
the can and spray all parts of the coupler with the cleaner to remove
the oil. DO NOT soak the parts for more than 60 seconds.
5)
Allow coupler parts to dry. Check coupler parts for oil once again.
Failure to clean the oil out of the coupler will result in premature
clogging of the new filter.
6)
Install the Brass Sample Hose Restrictor into the coupler and lightly
tighten, usually finger tight is sufficient.
3.4
Changing the Printer Paper
All
YELLOW JACKET 68940
Refrigerant Analyzer is equipped with on-board printer that uses
an inexpensive thermal paper for printing. The paper roll should be changed when a red stripe
appears on the left side of the printout.
To ch
ange the paper roll, press the ‘SET’ button shortly after powering the analyzer on or any
time it appears. The screen will display several options as shown in
(Figure 29)
. Press the
‘FEED’ button to advance to the screen shown in
(Figure 30)
.
21
Summary of Contents for 68940
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