A technician adds refrigerant to a large commercial appliance during a service call while a leak search is still to be scheduled. What information about that addition belongs on the service record?
Correct Answer
D) The date of the visit and the weight of refrigerant put into the appliance
Records for large appliances are built from two facts recorded on each visit: when refrigerant was added and how much. Those entries are what an owner uses to work out how fast an appliance is losing charge, and they are what an inspector reads. Pressures, weather and cylinder markings may all be useful to the next technician, but they are not what the leak history is assembled from, and a missing weight leaves a gap nobody can fill later.
Why This Is the Correct Answer
The service record for a large appliance is built around the date of each addition and the weight of refrigerant added. Those two entries let the owner see how much is being lost over what period, which is the basis for deciding whether an appliance is leaking above the level that requires action. A ticket without the weight leaves the appliance's history incomplete.
Why the Other Options Are Wrong
Option A: The pressure readings observed before and after the charge was added
Pressure readings help the next technician diagnose the system, but they do not measure how much refrigerant the appliance has lost over time.
Option B: The ambient temperature and the load conditions during the visit
Ambient conditions explain how the system was behaving on that day. They are diagnostic notes, not a record of refrigerant added.
Option C: The manufacturer and lot number printed on the refrigerant cylinder
Cylinder markings identify the product bought. They say nothing about how much of it went into this particular appliance on this visit.
Memory Technique
How much and when. If those two are on the ticket, the rest can be reconstructed.
Reference Hint
Each addition of refrigerant to a large appliance should be recorded with its date and the weight added.
More epa-608-type-2 Questions
A walk-in cooler condensing unit holds a full charge of twenty-five pounds of R-404A, which is below the fifty pound threshold that brings an appliance under the leak repair provisions. What still applies to this unit?
An office building has thirty water source heat pumps on a common water loop, and each one left the factory assembled, hermetically sealed and charged with four pounds of R-410A. How is one of those units classified?
A data sheet for an unfamiliar refrigerant lists a boiling point of about fifty-five degrees Fahrenheit at atmospheric pressure. What does that tell a technician holding Core and Type II certification?
A technician holds Core, Type I and Type III certification and is sent to recover the charge from a twenty ton rooftop unit charged with R-410A. What does that combination of sections allow on this job?
A fleet garage technician holds only the vehicle air conditioning certification issued under Section 609 and is asked to recover the charge from the shop's own rooftop air conditioner. What does that credential allow?
A split system's outdoor unit, indoor coil and the line set the installer ran and brazed between them are being considered. For the purposes of the refrigerant rules, what makes up the appliance here?
On a new installation the line set is brazed to a factory charged outdoor unit and an indoor coil shipped under a nitrogen holding charge, with the outdoor unit's service valves still closed. What does the recovery requirement call for before that brazing?
A rooftop unit's data plate has weathered until the charge figure cannot be read, and the technician needs the full charge to place the appliance under the evacuation and leak provisions. Where should that figure come from?
A computer room air conditioning unit holds forty pounds of R-407C and connects to a remote air cooled condenser through refrigerant piping run and brazed by the installer. How is that unit classified?
A shop's office manager, who holds no technician certification, is sent to a supply house to pick up a new recovery machine for the commercial crew. What does the sales restriction require at that counter?
People Also Study
Business & Financial Management
120 questions · 70% to pass
Contract Administration
60 questions · 70% to pass
Project Management
60 questions · 70% to pass
Related Study Resources
Previous Question
An electronic leak detector alarms continuously as soon as it is switched on inside a closed mechanical room. What should the technician do before trusting any reading from it?
Next Question
A technician is sent to recover the charge from a twenty ton rooftop unit and the only machine available is one certified for use with small appliances. What does the equipment rule require here?