EPA 608 Type II Sample Test Questions
.How ought to you recover refrigerant from a parallel device and why?
A. Isolate a parallel compressor gadget which will recover refrigerant.
Failure to isolate a parallel compressor machine will motive an open
equalization connection to be able to prevent refrigerant restoration.
B. Do not isolate a parallel compressor device that allows you to recover refrigerant.
Isolation will motive an open equalization connection a good way to prevent
refrigerant recovery
c. Do now not isolate a parallel compressor gadget unless valves are furnished, in
order to get better refrigerant. Isolation will reason an open equalization
connection in an effort to prevent refrigerant restoration
d. Do not isolate a parallel compressor device except get admission to valves are in
series. Isolation will motive an open equalization connection on the way to
save you refrigerant healing - ANS-a. Isolate a parallel compressor gadget to be able to get
better refrigerant.
Failure to isolate a parallel compressor gadget will purpose an open
equalization connection that will prevent refrigerant healing.
All recovery cylinders are ______ rated
density
strain
temperature
quantity - ANS-stress
Before charging a brand new system with refrigerant, what have to be finished? -
ANS-Pressurize with nitrogen (categorized as an inert gasoline) and leak
Comfort cooling chillers and all other gadget with over 50 pounds of
refrigerant with an annual leak price of ___ % requires restore below EPA
regulations:
a. Zero
b. 15
c. 35
d. 50 - ANS-b. 15
Describe approaches to hurry up the restoration.
A. Pack the recuperation cylinder in ice and / or applying heat to the equipment.
B. Recover as an awful lot as viable inside the liquid segment. In order to recover
liquid refrigerant, you have to join one hose to the system's liquid line.
, After convalescing liquid refrigerant, any closing vapor is condensed with the aid of
the restoration gadget.
C. A and b
d. None of the above - ANS-c. A and b
Describe ways you may visually look for leaks.
A. Using cleaning soap bubbles
b. Looking for traces of oil
c. Excessive superheat, due to low refrigerant fee
d. All the above - ANS-d. All the above
Exceptions to the required evacuation stages for recovery gadget that require
an appliance be evacuated to only 0 psig apply to appliances that:
a. Are being salvaged
b. Are filled with water or materials that would damage the restoration gadget
c. Have defective evaporator fan automobiles
d. Have air cooled condensers - ANS-Are full of water or materials that might harm the
recuperation device
Foaming at begin-up can be determined in what factor? What does this suggest?
A. Refrigerant in an accumulator foams on a low strain.
B. Refrigerant within the compressor oil will purpose oil foaming. Prevent
refrigerant migration with a crankcase heater
c. Refrigerant inside the receiver foams with high pressure
d. Refrigerant inside the condenser will foam on hot days - ANS-b. Refrigerant in the
compressor oil will motive oil foaming. Prevent refrigerant migration with a crankcase heater
How are you able to tell via a sight glass if there may be extra moisture inside the system?
A. You can see moisture bubbles
b. Look for shade modifications of the refrigerant
c. You can see gasoline bubbles
d. Site glass is obvious - ANS-b. Look for shade adjustments of the refrigerant
How many inches of Mercury vacuum is needed for HCFC-22, for home equipment
containing more than 200lbs refrigerant, using equipment earlier than 11/15/1993?
A. Four
b. 6
c. 10
d. None of the above - ANS-a. Four
How many inches of Mercury vacuum is required for HCFC-22, for appliances
containing greater than 200lbs refrigerant, the usage of gadget manufactured after
eleven/15/1993?
A. 4
.How ought to you recover refrigerant from a parallel device and why?
A. Isolate a parallel compressor gadget which will recover refrigerant.
Failure to isolate a parallel compressor machine will motive an open
equalization connection to be able to prevent refrigerant restoration.
B. Do not isolate a parallel compressor device that allows you to recover refrigerant.
Isolation will motive an open equalization connection a good way to prevent
refrigerant recovery
c. Do now not isolate a parallel compressor gadget unless valves are furnished, in
order to get better refrigerant. Isolation will reason an open equalization
connection in an effort to prevent refrigerant restoration
d. Do not isolate a parallel compressor device except get admission to valves are in
series. Isolation will motive an open equalization connection on the way to
save you refrigerant healing - ANS-a. Isolate a parallel compressor gadget to be able to get
better refrigerant.
Failure to isolate a parallel compressor gadget will purpose an open
equalization connection that will prevent refrigerant healing.
All recovery cylinders are ______ rated
density
strain
temperature
quantity - ANS-stress
Before charging a brand new system with refrigerant, what have to be finished? -
ANS-Pressurize with nitrogen (categorized as an inert gasoline) and leak
Comfort cooling chillers and all other gadget with over 50 pounds of
refrigerant with an annual leak price of ___ % requires restore below EPA
regulations:
a. Zero
b. 15
c. 35
d. 50 - ANS-b. 15
Describe approaches to hurry up the restoration.
A. Pack the recuperation cylinder in ice and / or applying heat to the equipment.
B. Recover as an awful lot as viable inside the liquid segment. In order to recover
liquid refrigerant, you have to join one hose to the system's liquid line.
, After convalescing liquid refrigerant, any closing vapor is condensed with the aid of
the restoration gadget.
C. A and b
d. None of the above - ANS-c. A and b
Describe ways you may visually look for leaks.
A. Using cleaning soap bubbles
b. Looking for traces of oil
c. Excessive superheat, due to low refrigerant fee
d. All the above - ANS-d. All the above
Exceptions to the required evacuation stages for recovery gadget that require
an appliance be evacuated to only 0 psig apply to appliances that:
a. Are being salvaged
b. Are filled with water or materials that would damage the restoration gadget
c. Have defective evaporator fan automobiles
d. Have air cooled condensers - ANS-Are full of water or materials that might harm the
recuperation device
Foaming at begin-up can be determined in what factor? What does this suggest?
A. Refrigerant in an accumulator foams on a low strain.
B. Refrigerant within the compressor oil will purpose oil foaming. Prevent
refrigerant migration with a crankcase heater
c. Refrigerant inside the receiver foams with high pressure
d. Refrigerant inside the condenser will foam on hot days - ANS-b. Refrigerant in the
compressor oil will motive oil foaming. Prevent refrigerant migration with a crankcase heater
How are you able to tell via a sight glass if there may be extra moisture inside the system?
A. You can see moisture bubbles
b. Look for shade modifications of the refrigerant
c. You can see gasoline bubbles
d. Site glass is obvious - ANS-b. Look for shade adjustments of the refrigerant
How many inches of Mercury vacuum is needed for HCFC-22, for home equipment
containing more than 200lbs refrigerant, using equipment earlier than 11/15/1993?
A. Four
b. 6
c. 10
d. None of the above - ANS-a. Four
How many inches of Mercury vacuum is required for HCFC-22, for appliances
containing greater than 200lbs refrigerant, the usage of gadget manufactured after
eleven/15/1993?
A. 4
