Type 1-#4

Only a single piercing access valve needs to be installed in which of the following recovery systems?

• System-dependent recovery units

• Self-contained recovery units

To charge a system accurately with refrigerant, a graduated charging cylinder is used.

• True

• False

As per EPA regulations, it is not necessary to recover which of the following refrigerants?

• Methyl chloride

• Ammonia

• Sulur dioxide

• All the options are correct

The EPA approves which of the following refrigerants being recovered by EPA-approved devices?

• Methyl chloride

• Ammonia

• Hydrogen

• None of the options are correct

Only appliances with ______ or less of refrigerants can be recovered by system-dependent recovery equipment.

• 10 lbs

• 15 lbs

• 20 lbs

• 25 lbs

Trapped liquid refrigerant is vaporized, and the recovery process is sped up by which of the following, found in domestic refrigeration systems?

• Compressor

• Condenser

• Evaporator

• Defrost heater

Overheating is not a risk to the system compressor in which of the following recovery units?

• Self-contained recovery units

• System-dependent recovery units

In order to recover the refrigerant from the system, a self-contaned recovery equipment uses its own power.

• True

• False

One does not need to have any certified recovery equipment if the HVAC technician holds a type I certification.

• False

• True

All air conditioning and refrigeration equipment containing more than ____ of refrigerant and manufactured after November 15, 1993 (according to EPA regulations) require that it be provided with a servicing aperture to facilitate removal of the refrigerant when the unit is serviced or disposed of.

• 1 lb

• 3 lbs

• 5 lbs

• 15 lbs