EPA Universal
A situation of excessive superheat on the evaporator outlet and compressor inlet of an aircon
device can be a demonstration of:
a. High head pressures.
B. A dirty condenser.
C. Insufficient water.
D. Low on refrigerant rate . - ANS-D.
A nitrogen tank need to usually be geared up with a:
a. Pressure regulator.
B. Evaporator strain regulator.
C. A low loss fitting.
D. An air purger . - ANS-A.
A system has been working with a entire restriction at the capillary tube inlet, what get right of
entry to is needed for recuperation?
A. One get entry to valve at the low facet of the gadget.
B. Two access valves, high and coffee aspect of system.
C. One access valve on the excessive aspect of the device.
D. One access valve on the evaporator, and one at the low aspect. - ANS-C.
As of what date did it come to be illegal to intentionally release Class I and Class II refrigerants
to the environment? - ANS-July 1 1992.
Before getting rid of a small appliance containing R-12, it's miles vital to:
a. Pressurize with nitrogen.
B. Recover the refrigerant.
C. Turn up aspect down.
D. Thoroughly leak check . - ANS-B.
CFC and HCFC refrigerants can reason suffocation due to the fact:
a. They comprise acidic materials.
B. They are heavier than air and displace oxygen.
C. They are lighter than air and could rise.
D. They smell horrible stopping you from respiratory . - ANS-B.
CFC's will no longer be synthetic inside the United States after:
a. 2000.
B. 1995.
C. 2005. - ANS-B.
, Comfort cooling chillers and all different equipment with an annual charge of [ ]% requires repair
beneath EPA guidelines:
a. Zero.
B. 15 - Per EPA document trigger quotes of extra than 50#.
C. 35.
D. 50 . - ANS-B.
Containers of refrigerant R-134a are colour coded:
a. Green.
B. White.
C. Yellow.
D. Light Blue . - ANS-D.
Disposable refrigerant cylinders need to be disposed of by using:
a. Rendering vain and despatched to salvage.
B. Taking to the carrier station and the use of for an air tank.
C. Recovery cylinder.
D. Refill with different refrigerants . - ANS-A.
For small equipment use, the recuperation equipment synthetic after Novermber
15, 1993, must be able to recovering:
a. 80% of the refrigerant when the compressor isn't operation or obtain a 4 inch vacuum under
ARI 740-1993.
B. Ninety% of the refrigerant while the compressor is operation or attain a 4 inch vacuum below
ARI 740-1993.
C. 99% of the refrigerant no matter compressor operation and acquire a 10 inch vacuum under
ARI 740-1993.
D. A and B above . - ANS-D.
A&B.
For the protection, provider or restore of small appliances, restoration system synthetic after [ ]
have to be certified via an EPA-accepted business enterprise?
A. July 1, 1992.
B. August 12, 1992.
C. January 1, 1995.
D. November 15, 1993 . - ANS-D.
Front seating the 3-manner suction service valve will close the :
a. Suction inlet to the valve
b. Gauge port
c. Gauge port and suction inlet
d. Valve port to compressor - ANS-D.
A situation of excessive superheat on the evaporator outlet and compressor inlet of an aircon
device can be a demonstration of:
a. High head pressures.
B. A dirty condenser.
C. Insufficient water.
D. Low on refrigerant rate . - ANS-D.
A nitrogen tank need to usually be geared up with a:
a. Pressure regulator.
B. Evaporator strain regulator.
C. A low loss fitting.
D. An air purger . - ANS-A.
A system has been working with a entire restriction at the capillary tube inlet, what get right of
entry to is needed for recuperation?
A. One get entry to valve at the low facet of the gadget.
B. Two access valves, high and coffee aspect of system.
C. One access valve on the excessive aspect of the device.
D. One access valve on the evaporator, and one at the low aspect. - ANS-C.
As of what date did it come to be illegal to intentionally release Class I and Class II refrigerants
to the environment? - ANS-July 1 1992.
Before getting rid of a small appliance containing R-12, it's miles vital to:
a. Pressurize with nitrogen.
B. Recover the refrigerant.
C. Turn up aspect down.
D. Thoroughly leak check . - ANS-B.
CFC and HCFC refrigerants can reason suffocation due to the fact:
a. They comprise acidic materials.
B. They are heavier than air and displace oxygen.
C. They are lighter than air and could rise.
D. They smell horrible stopping you from respiratory . - ANS-B.
CFC's will no longer be synthetic inside the United States after:
a. 2000.
B. 1995.
C. 2005. - ANS-B.
, Comfort cooling chillers and all different equipment with an annual charge of [ ]% requires repair
beneath EPA guidelines:
a. Zero.
B. 15 - Per EPA document trigger quotes of extra than 50#.
C. 35.
D. 50 . - ANS-B.
Containers of refrigerant R-134a are colour coded:
a. Green.
B. White.
C. Yellow.
D. Light Blue . - ANS-D.
Disposable refrigerant cylinders need to be disposed of by using:
a. Rendering vain and despatched to salvage.
B. Taking to the carrier station and the use of for an air tank.
C. Recovery cylinder.
D. Refill with different refrigerants . - ANS-A.
For small equipment use, the recuperation equipment synthetic after Novermber
15, 1993, must be able to recovering:
a. 80% of the refrigerant when the compressor isn't operation or obtain a 4 inch vacuum under
ARI 740-1993.
B. Ninety% of the refrigerant while the compressor is operation or attain a 4 inch vacuum below
ARI 740-1993.
C. 99% of the refrigerant no matter compressor operation and acquire a 10 inch vacuum under
ARI 740-1993.
D. A and B above . - ANS-D.
A&B.
For the protection, provider or restore of small appliances, restoration system synthetic after [ ]
have to be certified via an EPA-accepted business enterprise?
A. July 1, 1992.
B. August 12, 1992.
C. January 1, 1995.
D. November 15, 1993 . - ANS-D.
Front seating the 3-manner suction service valve will close the :
a. Suction inlet to the valve
b. Gauge port
c. Gauge port and suction inlet
d. Valve port to compressor - ANS-D.
