Respuesta :
Answer:
there are 4 steps that should be taken before using a recovery unit to remove a charge
Explanation:
A. The refrigerant should be tested for acid.
B. The recovery unit should be purged with nitrogen.
C. The recovery unit oil should be changed and recovery cylinder evacuated.
D. Service valve positions and recovery oil level should be checked, when applicable
Before using a recovery unit to remove a charge, the steps that should be taken include:
- Acid testing the refrigerant.
- Purging the recovery unit with nitrogen.
- Changing the oil in the recovery unit.
- Checking the service valve position and the recovery oil.
It should be noted that when using a recovery unit, it's important for the technician to check the position of the service valve first. This is important to prevent the venting of the refrigerant.
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