Bacharach PUR-CHEK Manual de Instruções descarregar pdf (Página 14)

Pur•Chek™ Pro O

peration and Maintenance Instruction Manual

0 P/

N 2100-9001 Rev 2

4.4. V

apor Sampling

Vapor sampling is the most common process used for identifying refrigerants using the Pur•Chek™ Pro.

It is a simple process requiring the operator to take these 4 steps:

1. Connect the vapor sampling hose to the instrument and then to the low side vapor port of the

system or cylinder.

2. Open the low side valve of the cylinder and press TEST.

3. When the test is complete, disconnect the hose from the cylinder.

4. Disconnect the hose from the Pur•Chek™ Pro for storage.

4.5. Liquid Sampling

Liquid sampling is an option that is exclusive to the Pur•Chek™ Pro. It permits the user to flash liquid into

vapor for introduction into the analyzer. To use the liquid sampling assembly, follow the steps below.

1. Inspect the liquid sampling assembly and ensure that the plunger on the oil trap syringe is

completely depressed.

2. Connect the appropriate end of the hose to the instrument and the opposite end of the liquid

sampling assembly to the High Side Liquid port of the system or cylinder. Affix the oil trap syringe

vertically to the tank with the magnet.

3. Open the high side valve of the cylinder. The liquid sample will exit the tank and be flashed to

vapor by the hose assembly. As the liquid is flashed, the plunger on the oil trap syringe will begin

to rise and the flashed refrigerant sample will travel into the analyzer.

4. Wait for the plunger on the oil trap syringe to expand past the outlet port.

5. Press test on the analyzer.

6. Upon completion of the test, close the valve on the cylinder, disconnect the hose from the inlet of

the oil trap syringe, depress the plunger on the oil trap syringe to expel the trapped oil.

7. Inspect the hose for signs of oil and replace the brass hose restrictor if necessary.

8. Disconnect the hose from the Pur•Chek™ Pro.

4.6. Viewing the Test Results

Upon completion of the test, the Pur•Chek™ Pro will display a screen similar to that shown in

Figure 4-4A. Pressing the MORE button will display the screen shown in Figure 4-4B.

(A) (B)

Figure 4-4. Screens Showing Sample Test Results

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Bacharach PUR-CHEK Manual de Instruções Página 14