A technician arrives at a machine he has not worked on before and needs to know which certification and which procedures apply. What does the machine's nameplate provide?
Correct Answer
A) The refrigerant designation and the factory charge weight for that machine
The nameplate carries the manufacturer's data for that specific machine, including which refrigerant it was built for and how much of it the machine holds. Those two figures are the starting point: the refrigerant sets the appliance class and therefore the certification and the recovery level, and the charge weight is the reference for charging and for leak calculations. Service history, recovery records and leak rates live in the owner's records, not on the plate.
Why This Is the Correct Answer
The refrigerant designation on the nameplate is what tells a technician the appliance class before anything is opened, and the charge weight is the reference figure for charging the machine and for judging losses. Because retrofits happen, the plate is checked against the service records and, where there is any doubt, against a refrigerant identifier.
Why the Other Options Are Wrong
Option B: The date of the last recovery and the level the machine was pulled down to
Recovery dates and levels reached go into the service record the owner keeps, not onto a plate stamped at the factory.
Option C: The certification type the servicing technician is required to hold for the work
Nameplates identify equipment. The certification required follows from the appliance class, which the technician works out from the refrigerant.
Option D: The leak rate the machine has run at over the preceding twelve month period
Leak rate is calculated from service records over time and is not something a factory nameplate could ever carry.
Memory Technique
Read the plate before you read the work order. The plate knows what the machine is.
Reference Hint
The equipment nameplate identifies the refrigerant the machine was built for and its factory charge weight.
More epa-608-type-3 Questions
Some jobs on a chiller count as a major repair under the refrigerant rules, which changes what a technician is allowed to do with a badly leaking machine. Which job falls into that category?
An owner asks how many pounds of refrigerant the rules allow to be left inside a chiller once the recovery has been signed off. What is the correct answer to give him?
The motor of a hermetic centrifugal chiller sits inside the pressure boundary rather than outside it on a shaft. What follows from that construction?
An oxygen monitor is used to decide whether a chiller machine room is safe to enter after a refrigerant release. Below what oxygen reading is the atmosphere treated as oxygen deficient?
A low-pressure chiller's rupture disc has a discharge line running from it. Where does that line have to terminate?
A refrigerant vapor detector in a chiller machine room reaches its alarm level. Besides sounding, what is that alarm expected to do?
Which piece of equipment requires a technician to hold Type III certification before it may be serviced?
What property of the refrigerant is what actually places an appliance into the low-pressure category?
During normal operation, what condition exists inside the evaporator of a running low-pressure centrifugal chiller?
In what unit is the required final recovery vacuum for a low-pressure appliance normally expressed?
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
A chiller machine room's refrigerant and oxygen sensors have been in place for several years with no service recorded. What does that mean for the protection they provide?
Next Question
Where does a technician look up the exposure limit and first aid information for the refrigerant in a particular machine?