Return Refrigerant to Normal Operating Conditions

1.

Be sure that the vessel that was opened has been evacuated.

 

 

 

 

2.

Access the Control Test Terminate Lockout table to view vessel pressures and turn on

 

machine water pumps.

 

 

 

 

 

 

 

 

 

 

 

3.

Open valves 1a, 1b, and 3.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Valve

1a

1b

2

3

4

5

8

11

12

13

14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Condition

 

 

C

 

C

C

C

C

C

C

C

 

4.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Crack open valve 5, gradually increasing pressure in the evacuated vessel to 68 psig

 

(469 kPa), for HCFC-22, 35 psig (141 kPa) for HFC-134a. Feed refrigerant slowly to

 

prevent tube freeze up.

 

 

 

 

 

 

 

 

 

 

 

5.

Leak test to ensure vessel integrity.

 

 

 

 

 

 

 

 

 

6.

Open valve 5 fully.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Valve

1a

1b

2

3

4

5

8

11

12

13

14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Condition

 

 

C

 

C

 

C

C

C

C

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7.Open valve 11 to equalize the liquid refrigerant level between vessels.

Page 195 Page 197
Page 196
Image 196
Carrier PC211 specifications Return Refrigerant to Normal Operating Conditions
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