Refrigerant tubing rubs against sharp sheet metal and transmits vibration. What is required?
- AIncrease charge
- Protect and support tubing
- CRemove insulation
- DClamp it tighter to the edge
Why B is correct
Abrasion and vibration can wear through tubing or create noisy structure-borne transmission. Approved sleeves, supports, isolation, and bend practices protect the circuit.