FREE 313D Refrigerant Handling and Recovery Questions and Answers

Question 1

A technician is recovering R-410A from a residential system using a recovery machine.
The recovery cylinder, which has a water capacity (WC) of 47.6 lbs and a tare weight (TW) of 18 lbs, is placed on a digital scale.
What is the maximum final weight on the scale before the recovery process must be stopped?

Accepted Answer

56.1 lbs

Answer

47.6 lbs

Answer

65.6 lbs

Answer

38.1 lbs

Question 2

According to Ontario Regulation 463/10 under the Environmental Protection Act, what is a key requirement for any person handling or purchasing refrigerants?

Accepted Answer

They must possess a valid Ozone Depletion Prevention (ODP) certificate.

Answer

They must hold a valid Gas Technician 2 (G2) license.

Answer

They must be accompanied by a licensed journeyperson.

Answer

They must renew their trade license annually.

Question 3

A technician is preparing to recover refrigerant from a residential split system. To significantly increase the speed of the recovery process, which of the following actions is most effective?

Accepted Answer

Removing the Schrader valve cores from the service ports.

Answer

Using the longest possible hoses to reach the service vehicle.

Answer

Ensuring the recovery machine is placed above the outdoor unit.

Answer

Recovering only in the vapor phase to protect the recovery machine.

Question 4

While recovering refrigerant, a technician notices that the pressure in the recovery cylinder is rising quickly, slowing down the process. Which of the following is a recommended procedure to manage this issue and speed up recovery?

Accepted Answer

Cool the recovery cylinder using a water bath or wet rags.

Answer

Increase the heat on the system's liquid line with a torch.

Answer

Slightly vent the recovery cylinder to relieve pressure.

Answer

Stop recovery and wait for the pressures to equalize naturally.

Question 5

Which of the following statements is TRUE regarding the handling of different types of refrigerants during recovery?

Accepted Answer

Different refrigerants must never be mixed in the same recovery cylinder.

Answer

It is acceptable to mix R-22 and R-410A in the same recovery cylinder if the total volume is low.

Answer

All recovered refrigerants can be topped up into other systems without processing.

Answer

A single recovery machine can be used for all refrigerants without any purging between uses.

Question 6

A technician is called to decommission an old residential air conditioning unit. The technician successfully recovers the refrigerant into an approved cylinder. According to regulations, what must be done with the decommissioned system?

Accepted Answer

A notice must be attached stating that the refrigerant has been removed.

Answer

The system can be immediately sent to a landfill.

Answer

The lineset can be cut and left open to the atmosphere.

Answer

The system must be filled with nitrogen to a pressure of 150 psig.