Recovery

Question 1

Recovery machine

Answer 1

is just a condensing unit:

Question 2

1. Oil-less compressor

Answer 2

pulls refrigerant out of a unit

Question 3

• Machine inlet

Answer 3

is the suction line

Question 4

Tare Weight (TW)

Answer 4

– The weight of the tank when empty

Question 5

• Water Capacity (WC)

Answer 5

– The amount of water it can hold, in pounds

Question 6

• “Nominal” tank sizes
–

Answer 6

25 lb and 50 lb
•

Question 7

Maximum fill when recovering refrigerant

Answer 7

– 80% of nominal capacity
• Tanks must be re-inspected every 5 years

Question 8

Tanks have two valves:
–

Answer 8

One for liquid
– One for vapor (or gas)

Question 9

Recovery Process

Answer 9

Remove vapor
2. Condense it into a liquid, then
3. Discharge liquid into recovery tank

Question 10

The reason for push-pull recovery:

Answer 10

– Vapor recovery on large systems is slow

Question 11

The Third reason for push pull recovery

Answer 11

– Pushing out liquid first can save time

Question 12

A chilled tank

Answer 12

Speed recovery

Question 13

Push pull recovery process

Answer 13

1. Pressurize system with recovery machine
2. Liquid pushed into recovery cylinder
3. Finish with standard vapor recovery

Question 14

Liquid recovery with Evacuated Tank

Answer 14

Pull a vacuum on a recovery tank
– Connect it to the unit’s receiver
– The tank will pull out liquid quickly

Question 15

Recovery Machines are Vapor Pumps

Answer 15

• Liquid must be changed to a vapor
– An orifice in the inlet vaporizes liquid

Question 16

Ritchie (Yellow Jacket):

Answer 16

0.4 lbs/min vapor recovery
2 lbs/min liquid recovery
13 lbs/min push-pull recovery

Question 17

Appion performance:

Answer 17

0.6 lbs/min vapor recovery
6 lbs/min liquid recovery
16 lbs/min push-pull recovery

Question 18

Recovery Notes

Answer 18

Only recover CFCs, HCFCs, and HFCs
- Not ammonia, hydro carbons, or nitrogen
- Nor mixtures of refrigerants

Question 19

Recovery Notes Part 2

Answer 19

• Tag cylinders with type of refrigerant inside
• Recover refrigerant before disposing of old
equipment

Question 20

Removal of refrigerant

Answer 20

Compressor motor is burned
System is being removed to be replaced.
A repair to system

Question 21

Recover Refrigerant

Answer 21

Remove refrigerant in any condition from a system and store in an external container

Question 22

Recycle Refrigerant

Answer 22

Clean the refrigerant by oil serration and single or multiple passes through devices

Question 23

Reclaim refrigerant

Answer 23

Process refrigerant to new product specifications by means distillation

Question 24

Passive Recovery

Answer 24

Use of internal pressure of the systems compressor to aid in refrigerant recovery process

Question 25

Active recovery

Answer 25

Self contained refrigerant recovery unit