Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
CFC Type 2
EPA 608 Type 2 Flash Cards
| Question | Answer |
|---|---|
| The industry standard for airflow across the evaporator is cubic feet per minute (CMF), per ton of cooling. | 400 |
| when installed with a gas furnace, the evaporator is typical located on the side of the furnace. | up straight |
| once in the condenser the refrigerant vapor will first be | down straight |
| most manufactures recommend the condenser be installed with feet or more of vertical clearance and at least inches on each side for proper operation | 5, 12 |
| the circulates the refrigerant in the refrigeration Cricut | compressor |
| compressors are welds shut at the factory and are not field serviceable | hermetic |
| on a reciprocating compressor the space between the piston and the compressor head at the top of the compression stroke is called | clearance volume |
| most hermetic compressor motors are collided by | suction gas |
| an increase in discharge pressure or a decrease in suction pressure would result in | higher |
| a compressor has two spiral plates one stationary and one that orbits | scroll |
| What are the maximum allowable leak rates for comfort cooling, commercial refrigeration, and Industrial Process Refrigeration (IPR)? | Comfort Cooling: 10% Commercial Refrigeration: 20% Industrial Process Refrigeration (IPR): 30% |
| For a system containing 50 pounds or more of refrigerant that has exceeded the threshold leak rate, how many days does the owner have to repair the leak? | The owner has 30 days to repair the appliance so that it leaks below the threshold limit |
| If an appliance has a charge of 200 pounds or more of a regulated refrigerant and passes an initial verification leak test, within how many days must a follow-up verification test be conducted? | Within 10 days |
| According to the manual, what is the most efficient way to reduce recovery time when using a recovery unit? (think about the state of the refrigerant and the location of the receiver) | Recover in the liquid phase, or remove refrigerant from the condesner outlet when the condenser is below the receiver |
| System-dependent (passive) recovery equipment cannot be used when the appliance contains more than how many pounds of refrigerant? | More than 15 pounds |
| What level of vacuum (in inches of Hg) must you evacuate a medium-pressure appliance containing less than 200 lbs of refrigerant if using recovery equipment manufactured after November15, 1993? | 10" Hg vacuum |
| What is the recommended vacuum level (in microns) that should be achieved to ensure all moisture and non-condensable have been removed from a system? | 500 microns |
| Where is a refrigerant receiver typically located in a system that uses a thermostatic expansion valve (TXV)? | Typically found in the liquid line, at the outlet of the condenser |
| EPA regulations define certain repairs as "major". Which three specific component replacements are considered a "major repair"? | Replacement of an evaporator coil, condenser coil, or the compressor |
| When using multiple relief valves to protect a refrigeration system, how must they be installed in relation to each other? | They can only be installed in parallel |
| If after repairing a leak in an HCFC rack refrigeration system used in a supermarket, the system fails the initial leak verification test, how long does the technician have to make additional repairs? | The technician has a 30 day window to make additional repairs or develop a retrofit plan |
| Assuming no extensions apply, a cold storage warehouse operating an appliance charged with R-22 or any other regulated substance leaking above the threshold rate, can continue to operate the appliance without repair for how long? | 12 months before it must be retrofitted or retired |
| How many months does the owner or operator have to retrofit or retire a leaking appliance if the replacement appliance will use a refrigerant exempt from the venting prohibition? | 18 months |
| Based on the section 608 leak repair regulations chart and industrial process refrigeration system containing 1000 pounds or more of R – 22 that has exceeded the applicable leak rate threshold must be inspected for leaks every three months for how long? | 1 year after repair |
| The records of leak inspections, initial leak verification and follow-up verification tests must be kept on file by the owner or operator of the equipment for how long? | 3 years |
| After assembly and installation of a split system, the unit should first be pressurized with an inert gas, such as? | Dry-nitrogen |
| True or false, when absolutely necessary, dry nitrogen can be used with a trace amount of the systems designed refrigerant for leak detection. | True |
| True or false, it is required that the purchase of active recycling and recovery equipment be reported to the EPA. | False |
| System-dependent or passive recovery techniques cannot be used as EPA regulations prohibit their use when the appliance contains over how many pounds of refrigerant? | 15 pounds |
| True or false, cooling the recovery cylinder will lower its pressure and speed up the recovery process or removal of refrigerant charge from my system. | True |
Created by:
AHR-160