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WorksheetsEPA 608 - TYPE 1
Total questions: 20
Worksheet time: 10mins
As of November 15, 1993, what percentage of refrigerant must be recovered from a small appliance if the compressor is NOT functioning?
70%
80%
50%
0%
What is done with nitrogen used to flush debris from a system, after recovery?
it must be recovered into a separate tank
it can be vented
it can be put back in its cylinder for re-use
it will require reclaiming
A system dependent recovery procedure captures refrigerant in a:
Recovery device
Non-pressurized container
Pressurized container
As of November 15, 1993, what percentage of refrigerant must be recovered from a small appliance if the compressor is functioning?
80%
70%
50%
90%
How is system dependent recovery performed on a unit with an operating compressor?
run the unit's compressor and recover from both the high and low side of the system
ensure the compressor is off and capture whatever refrigerant will naturally flow out of the system
run the unit's compressor and recover from the high side of the system
run the unit's compressor and recover from the low side of the system
What should be done when filling a graduated charging cylinder with refrigerant?
recover the refrigerant vapor that is vented from the top of the cylinder
heat the cylinder
close the vent valve on the top of the cylinder
use a pump to transfer refrigerant from the tank to the graduated charging cylinder
Which of the following are examples of a small appliances?
Home refrigerator and window AC unit
Chiller and centrifugal
Heat pump and convenience store refrigerator
To satisfy the rules on refrigerant recovery from a small appliance, the technician can evacuate the small appliance to what minimum level?
0 psig
10 inches of mercury vacuum
4 inches of mercury vacuum
5 psig
How can you prevent oil migration when using a recovery unit on a system containing only a few ounces of refrigerant?
recover from both the high and low side of the system
recover from the low side of the system
recover from the high side of the system
Why should you never mix refrigerants?
it is difficult to reclaim and very expensive to destroy
All of these
the reclamation facility may refuse it
the reclamation facility may destroy it at the owner's expense
Obtaining an accurate pressure and temperature measurement of the refrigerant inside a recovery cylinder can be used for what purpose?
it can identify the type of refrigerant in the cylinder
it can be used to detect non-condensables(air) in the cylinder
both answers are correct
What maintenance procedures should be performed on recovery equipment?
check for leaks
all answers are correct
replace filters as required
check for proper oil level
What is the straight piece of tubing (process tube or stub) on a small appliance used for?
To measure the temperature of the system
To vent the refrigerant into the atmosphere
To attach a piercing valve in order to access the refrigerant
To open the unit and measure the pressure
How can you find out what type of refrigerant is in an appliance?
just guess, all refrigerants are the same
ask the owner
visually inspect the refrigerant
check the unit data plate
Which of the following is true of solderless piercing valves?
all answers are correct
they should be leak tested
they should only be used on copper or aluminum tubing
they are temporary and should be removed once the repair is complete
System-dependent recovery can only be used on appliances containing up to:
17 lbs of refrigerant
10 lbs of refrigerant
15 lbs of refrigerant
25 lbs of refrigerant
What type of recovery equipment uses a self contained recovery unit to remove refrigerant from an appliance?
passive recovery equipment
self-contained (active) recovery equipment
A technician recovering refrigerant during maintenance or repair of a small appliance must have ___.
A Type III Certification
A Type II and Type III Certification
A Type I or Universal Certification
A Type II Certification
What is the leak repair requirement for small appliances?
any leak in a small appliance must be repaired as soon a possible
The EPA does not require leak repair for small appliances,, but leaks should be repaired when possible to conserve refrigerant
leaks must be repaired when 20% of the charge has leaked
leaks must be repaired when 50% of the charge has leaked
What should be done prior to transferring refrigerant to a new recovery cylinder?
flush the cylinder with a solvent
use a vacuum pump to remove any non-condensables and reduce the pressure in the recovery cylinder
heat the recovery cylinder
slightly pressurize the cylinder with refrigerant prior to recovery
