5 Servicing, Verification, and Documentation Free Online FlashCards

When is servicing a refrigeration appliance complete?

A repair is complete when it is sound, refrigerant is properly contained, the appliance operates as intended, and the work is documented.

Who should perform refrigerant-circuit work?

Refrigerant-circuit work must be performed by an appropriately certified technician using equipment and procedures approved for the refrigerant and appliance.

How should refrigerant be handled during servicing?

Recover refrigerant into an approved cylinder; never intentionally vent it. Identify and keep different refrigerants separate.

What pressure is required before certain non-major repairs?

For a non-major repair that will not be followed by evacuation, EPA rules require a high- or very-high-pressure appliance to be at 0 psig before opening.

What gas is used for a specified pressure test?

When specified, pressure-test with dry nitrogen and appropriate pressure controls. Never use oxygen or compressed air, and do not exceed the manufacturer’s test pressure or any component’s rating.

What can a pressure-decay check establish?

A pressure-decay check can indicate that pressure changed, but it does not locate a leak and should not replace a leak-location method.

How does an initial verification test differ from a leak inspection?

A leak inspection locates leaks. An initial verification test checks whether a repair succeeded, generally before refrigerant is added back.

How should a refrigeration appliance be recharged?

Use a scale and the manufacturer’s charging procedure to add the specified refrigerant and amount. Pressure alone does not establish the correct charge.

What should be checked when restoring normal operation?

Check for abnormal noise, vibration, temperatures, pressures, and control operation. Confirm performance using the manufacturer’s criteria.

When can Section 608 leak-repair rules apply to an ODS appliance?

Section 608 leak-repair rules apply to appliances containing at least 50 pounds of ozone-depleting refrigerant when the applicable leak-rate threshold is exceeded.

What refrigerant information belongs in a service report?

Record the refrigerant type and the quantity recovered, added, or otherwise transferred; include cylinder identification where applicable.

When is a follow-up verification test performed?

A follow-up verification test checks the repair after the appliance has returned to normal operating conditions.