608 TYPE 1

Front

Which of the following are recommended safe work practices when recovering refrigerant?
- Wear safety eyewear and blue-lined gloves when connecting/disconnecting hoses
- Wear a respirator when working with any refrigerant.
- Wear cotton gloves when working with any compressed gas.
- Ventilation is only necessary if oil, appearing as a white cloud or fog, is emitted during the recovery procedure.

Back

Wear safety eyewear and blue-lined gloves when connecting/disconnecting hoses

Front

Which condition can cause excessive pressure on the high side of a self-contained (active) recovery device?
When there is a large volume of non-condensable gas in the refrigerant being recovered.

Back

When there is a large volume of non-condensable gas in the refrigerant being recovered.

Front

When R-410A is recovered from an appliance, it;

Back

Should be recovered into a recovery vessel that is clearly marked to ensure that mixing of refrigerants does not occur.

Front

What is the maximum allowable factory charge of refrigerant for type 1 appliances using CFC’s, HCFC’s, or HFC’s?

Back

5 pounds

Front

Why should low and high side access valves be installed when recovering refrigerant from a household refrigerator?

Back

To prevent oil migration.

Front

For which of the following refrigeration systems/appliances would it be permissible to use a passive recovery device for recovery of CFC’s, HCFC’s, and HFC’s? A centrifugal air conditioner, A reciprocating liquid chiller, A single compressor, large commercial walk-in freezer, A domestic refrigerator

Back

A domestic refrigerator

Front

When installing any type of access fitting onto a sealed system;

Back

The fitting should be leak tested before proceeding with recovery.

Front

Which of the following does NOT meet the criteria for type 1 appliance certification?
An MVAC-like system that holds three pounds of R-12.
A water cooler that holds 13 ounces of R-22.
A food freezer that holds 22 ounces of R-134a.
A dehumidifier that holds seven ounces of R-410a.

Back

An MVAC-like system that holds three pounds of R-12.

Front

When using a self-contained recovery device on a CFC, HCFC, or HFC system with an operating compressor, technicians must; Either recover the refrigerant to 4 inches of mercury vacuum or 90% of the nameplate charge.

Back

Either recover the refrigerant to 4 inches of mercury vacuum or 90% of the nameplate charge.

Front

What is the maximum normal charge of HCFC or HFC refrigerant in an appliance that is allowed to use system dependent recovery equipment?

Back

15 pounds