Bacharach PUR-CHECK PRO, Инструкция

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Pur•Chek
™
Pro
Instruction 2100-9001 14
5.3 Changing the White Plastic Sample Filter
When inspecting the sample fi lter, look completely around the entire outside diameter of the white fi lter 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 discolor-
ation. The round ends of the fi lter may always appear red. If red spots or discolorations are discovered on the
outside diameter, the sample fi lter requires replacement to prevent the infl ux of particulate and oil mists into the
instrument.
Obtain a replacement fi lter, P/N 2100-0006. Remove the existing fi lter from the retaining clip of the instrument
by pulling straight up and out. CAREFULLY remove the fl exible, black rubber tubing connections from both
ends of the existing fi lter. DO NOT allow the tubes to slip back into the internal portion of the case. Discard the
existing fi lter in an environmentally friendly manner.
Install the tube ends onto the barbs of the replacement fi lter, taking note to align the fl ow arrow of the fi lter with
the fl ow arrow of the instrument top panel. CAREFULLY slide the tubing back into the internal portion of the
instrument and seat the new fi lter into the retaining clip. Inspect the sample hoses for signs of oil entrapment.
Replacement of the sample fi lter usually requires cleaning or replacement of the sample hoses.
5.4 Replacing the Sample Hoses
Inspect the inside diameter of the tube for signs of oil build up, dirt, obstructions, kinks, cuts, fraying, or any
other signs of wear. Oil contamination cannot be cleaned out of sample hoses due to the density of the oil
restrictor. If oil is visible in the Low Pressure Vapor hose, replace the hose and restrictor with P/N 2100-0010.
For the High Side Liquid Sampling Hose, inspect the inside diameter of the tube for signs of oil build up, dirt,
obstructions, kinks, cuts, fraying, or any other signs of wear. Oil contamination cannot be cleaned out of sample
hoses due to the density of the oil restrictor. If oil is visible in the High Pressure Liquid Trap Hose, replace the
hose and restrictor with P/N 2100-0010.
To replace the Restrictor Assembly, do the following:
1. Disconnect the sample hose from the analyzer
2. Remove the brass fi lter (with hose attached) from the coupler and discard. Be sure to use a
backing wrench so as not to damage the coupler.
3. Check for signs of oil and debris in the coupler.
4. Using a cleaner that contains ONLY Tetrachloroethylene and carbon dioxide, spray all parts of
the coupler with the cleaner to remove the oil, per the cleaner’s instructions. DO NOT soak the
park for more than 60 seconds.
5. Allow couple parts to dry. Check coupler parts for oil again. Failure to clean the oil out of the
coupler will result in premature clogging of the new fi lter.
6. Install the new fi lter (P/N 2100-0010), into the coupler and lightly tighten. Finger tight is
suffi cient.
5.5 Changing the Printer Paper
Pur•Chek™ Pro Diagnostic Refrigerant Analyzers use a custom inexpensive thermal paper for printing. The
paper roll should be changed when a red stripe appears on the left side of the printout.
To change the paper roll, press the “HELP” button on the “Ready to Air Cal” screen as shown in Section 4.2,
Figure 3. The screen will display several options as shown in Figure 22. Press the “SET” button to advance to
the screen shown in Figure 23 and then press the “FEED” button.