Maintenance & Troubleshooting; Setting The Lcd Contrast - MasterCool ULTIMA ID PRO Betriebshandbuch

3 MAINTENANCE & TROUBLESHOOTING

3.1 Setting the LCD Contrast

The Ultima ID Pro™ features an adjustable LCD contrast for use in varying light conditions. To adjust the contrast, press the 'SET'
button which appears after the unit is powered on. The screen will display several options as shown in (Figure 27). Pressing the
'SET' button will display the options in (Figure 28). Press 'DOWN' or 'UP' to adjust the LCD contrast. Press 'SAVE' to save your
settings and return the (Figure 27).
3.2 Changing the White Plastic Sample Filter
When inspecting the sample filter, look completely around the entire outside diameter of the white filter element located inside of
the clear plastic housing. Look for red spots or the beginnings of discoloration on the white outside diameter of the element. DO
NOT look into the round ends of the white element for red spots or discoloration. The round ends of the filter may always appear
red. If red spots or discolorations are discovered on the outside diameter, the sample filter requires replacement to prevent the
influx of particulate and oil mists into the instrument.
To change the Sample Filter, first obtain a replacement filter, part number 6-02-6000-08-0. Remove the existing filter from the re-
taining clip of the instrument by pulling straight up and out. CAREFULLY remove the flexible, black rubber tubing connections from
both ends of the existing filter. DO NOT allow the tubes to slip back into the internal portion of the case. Discard the existing filter
in an environmentally friendly manner.
Install the tube ends onto the barbs of the replacement filter, taking note to align the flow arrow of the filter with the flow arrow on
the analyzers top panel. CAREFULLY slide the tubing back into the internal portion of the instrument and seat the new filter into
the retaining clip. Inspect your hose assemblies for signs of oil entrapment. Replacement of the Sample Filter usually requires
replacement of the Brass Sample Hose Restrictor Assembly.
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 Assem-
bly with P/N 6-01-6001-26-0.
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 instruc-
tions 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 prema-
ture clogging of the new filter.
6. Install the Brass Sample Hose Restrictor, part number 6-01-6001-26-0, into the coupler and lightly tighten, usually finger tight
is sufficient.
3.4 Changing the Printer Paper
All Ultima ID Pro™ Refrigerant Analyzer is equipped with on-board printer that uses an inexpensive thermal paper for printing. The
TO FEED A
NEW PAPER ROLL
PRESS FEED
PRESS SET TO
ADJ LCD CONTRAST
BACK FEED SET
Figure 27
ADJUST CONTRAST
CURRENT VALUE
4
DEFAULT VALUE
4
DOWN
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0
0
UP SAVE
Figure 28
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