Section 608 core/type 1
are ODP substances
Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs)
will not dissolve in water
The chlorine in CFC's will;
changes a low pressure vapor to a high pressure vapor
The compressor ____________________________________
changes a low pressure liquid to a low pressure vapor
The evaporator ___________________
CFC's
Which of the following has the highest Ozone Depletion Potential?
Appliance manufactured , charged, and hermetically sealed in a factory with 5 lbs or less refrigerant.
A small appliance is defined by EPA as;
legally vented
After recovering refrigerant, the Nitrogen used to flush the system may be:
nitrogen
After the refrigerant has been recovered, which of the following can be used to flush the system?
three oxygen atoms
An ozone molecule contains;
can help vaporize and liquid refrigerant during recovery
Applying heat with a heat gun to the compressor;
Recycle
Clean refrigerant for reuse by separating the oil from the refrigerant and removing moisture from the refrigerant by passing it through one or more filter driers, is the definition of;
Depletion of Stratospheric ozone
Crop loss, eye disease, and skin cancer have been attributed to;
Hydrogen, Chlorine, Flourine, Carbon
HCFC's contain
will not damage stratospheric ozone
HFC's ________;
10
How many chlorine atoms does it take to destroy 1,000,000 (one million) ozone molecules?
a compressor burnout has likely occurred
If a strong odor is detected while performing the recovery process,
recovery is not required
If after installing a fitting for the purpose of recovering the appliances refrigerant, you find that the system pressure is 0 psig;
certified by an EPA approved testing labratory
If regulations change after the technician becomes certified;
the technician is responsible for complying with any of the future changes in the regulation.
If regulations change after the technician becomes certified;
July 1,1992
It has been a violation of EPA Section 608 regulations to vent CFC's or HCFC's since;
November 15, 1995
It has been a violation of EPA Section 608 regulations to vent HFC's since
Disposable cylinders
Recover any remaining refrigerant and then render the cylinder useless, then recycle the metal is the proper disposal method for;
will make the reclaimed refrigerant non reclaimable and a charge for disposal may be levied
Recovering multiple types of refrigerants in the same cylinder;
90% refrigerant or achieving 4 inches of vacuum
Recovery equipment manufactured after November 15, 1993 must be capable of recovering;
80% of the refrigerant or 4 inches of vacuum
Recovery equipment manufactured before November 15, 1993 must be capable of recovering.
Methyl Formate, methyl chloride, or sulfur dioxide
Refrigerators in the 1950's and earlier may have used what refrigerants (recovery is not required)?
has its own means of recovery
Self-contained or active recovery equipment;
install a piercing type access fitting
Small appliances are equipped with a straight piece of tubing (process stub) used to;
the refrigerant should not be recovered
Small appliances in recreational vehicles may use refrigerants such as Ammonia, Hydrogen, or water, and therefore;
15 pounds of refrigerant or less
System-dependant devices may only be used on appliances containing;
captures refrigerant into a non-pressurized container, with the assistance of the appliance compressor.
System-dependant or passive recovery equipment;
November 14,1994
Technicians have been required to be certified to service, maintain, or dispose of appliances containing regulated refrigerants since.
Type 1 or universal certification
Technicians who perform sealed system service on small appliances must have;
changes a high pressure vapor to a high pressure liquid
The condenser _______________________________________
Ozone
The layer of the Stratosphere that protects us from excessive Ultra Violet radiation is comprised of;
changes a high pressure liquid to a low pressure liquid
The metering device ______________________________
Chlorine
The molecule found in CFC's and HCFC's that depletes ozone is:
System dependent and Self-contained
The two types of recovery systems are
Reclaim
To process refrigerant to a level equal to new (virgin) product specifications as determined by chemical analysis defines;
persons handling refrigerant during maintenance, service, or repair of small appliances.
Type I Certification is required for;
air
What is defined as a non-condensible?
Never energize the compressor
When a system is in full vacuum ____________
the ozone layer is being depleted
When chlorine monoxide is found in the stratosphere, it indicates that;
the refrigerant vapor that is vented off the top of the cylinder must be recovered
When filling a charging cylinder with a regulated refrigerant;
charge through a regulator, istall a pressure relief valve downstream line from the pressure regulator
When pressurizing a system with nitrogen you should;
place access fitting on both the low side and the high side of the system
When using a system-dependent recovery system on an appliance that has a non-operating compressor, the technician should;
run the compressor and recover from the high side of the system
When using a system-dependent recovery system on an appliance that has an operating compressor, the technician should;
Montreal Protocol
Which international agreement (Treaty) regulated the production and use of CFCs, HCFC's, halons, methyl chloroform and carbon tetrachloride?
EPA does not require repair, but leaks should be repaired whenever possible
Which of the following is true of small appliances refrigerant leaks;
HFC's
Which type of refrigerant contains no chlorine?