Question

Why should long hoses between the unit and the recovery machine not be used?

1) They cause a decrease in pressure
2) They cause a decrease in temperature
3) They cause a loss of refrigerant
4) They cause a malfunction in the unit

Answer 1

Long hoses between the unit and the recovery machine should not be used due to a decrease in pressure and temperature, loss of refrigerant, and the potential for unit malfunction.

Step-by-step explanation:

Long hoses between the unit and the recovery machine should not be used because:

1. They cause a decrease in pressure. Long hoses have more surface area for friction to occur, which leads to a decrease in pressure.
2. They cause a decrease in temperature. Friction and heat transfer along the hoses cause a decrease in temperature of the refrigerant, affecting the overall efficiency of the system.
3. They cause a loss of refrigerant. Long hoses increase the chances of leaks, resulting in a loss of refrigerant, which can be harmful to the environment.
4. They cause a malfunction in the unit. The increased distance and resistance along the long hoses can put strain on the unit, leading to malfunction or damage.