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EPA 608 (TYPE II) Exam Questions And ANSWERS.
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EPA 608 (TYPE II) Exam Questions And ANSWERS.
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EPA 608 (TYPE II) Exam Questions AndANSWERS
When .a .new .system .has .been .assembled, .the .first .thing .to .do .is? .- .(correct .answer) .-
Pressurize .the .system .with .an .inert .gas .& .leak .check.
After .installation .of .a .field-piped .R-410A .split .heat .pulp, .the .unit .should .first .be? .- .
(correct .answer) .-Pressurized .with .nitrogen .then .leak .checked.
The .EPA .regulations .require .that .any .appliances .containing .more .than .50 .pounds .of .refrigerant .
(except .for .commercial .& .industrial .process .refrigeration) .must .be .repaired .when .the .leak .rate .exce
eds ._________ .of .the .charge .per .year? .- .(correct .answer) .-15%
R-410A .requires .recovery .tanks .rated .for .at .least? .- .(correct .answer) .-400 .psig
After .refrigerant .liquid .has .been .recovered .from .a .system, .any .remaining .vapor .is? .- .
(correct .answer) .-Condensed .by .the .recovery .system.
Your .recovery/recycling .machine .has .R-
502 .refrigerant .in .it. .You .now .have .to .recover .refrigerant .from .a .unit .with .R-
22. .What .must .be .done .before .the .R-22 .refrigerant .can .be .recovered/recycled? .- .(correct .answer) .-
Recover .as .much .R-502 .from .the .recovery .unit .as .possible, .change .filter, .& .evacuate.
In .a .refrigeration .system .with .a .TXV .
(or .other .type .of .throttling .device), .the .component .directly .following .the .condenser .is .the? .- .
(correct .answer) .-Receiver
When .charging .an .R-410A .system .that .uses .a .water-
cooled .condenser, .you .must .first .charge .with .vapor .to .a .pressure .of .at .least________, .before .switch
ing .to .liquid .charging. .- .(correct .answer) .-120 .psig
Recovered .refrigerant .may .contain .what? .- .(correct .answer) .-1.) .Acids
2.) .Moisture
, 3.) .Oils
Your .recovery/recycling .machine .has .R-
22 .refrigerant .in .it. .You .now .have .to .recover .refrigerant .from .a .unit .with .R-
410A. .What .must .be .done .before .your .recovery .unit .can .be .used .to .recover .R-410A? .- .
(correct .answer) .-1.) .The .recovery .unit .must .be .EPA .certified .for .use .with .R-410A.
2.) .The .recovery .tank .must .be .designed .for .the .pressure .of .R-410A.
3.) .The .filter .& .lubricant .in .the .recovery .unit .must .be .changed, .& .the .recovery .unit .evacuated.
To .recover .liquid .refrigerant, .you .must .connect .one .hose .to .the? .- .(correct .answer) .-Liquid .Line.
The .proper .charging .method .for .blended .(non-azeotropic) .refrigerants .
(400 .Series) .is .to .use .a .remove .the .charge .from .the .cylinder .as .a? .- .(correct .answer) .-Liquid
Before .using .a .recovery .unit .to .remove .a .charge, .what .steps .should .be .taken? .- .(correct .answer) .-
1.) .Check .service .valve .positions.
2.) .Check .the .oil .level .in .the .recovery .unit.
3.) .Evacuate .recovery .unit .& .recovery .tank.
On .refrigeration .units .that .use .an .open .compressor; .the .________ .is .most .likely .to .leak .if .the .unit .i
s .not .used .for .several .months. .- .(correct .answer) .-The .rotating .shaft .seal.
Noncondensables .in .a .system .cause? .- .(correct .answer) .-Higher .discharge .pressure.
Heat .Pumps .that .use .R-410A .should .be .leak .checked .with? .- .(correct .answer) .-Pressurized .Nitrogen.
A .reciprocating .compressor .should .not .be .energized .when? .- .(correct .answer) .-The .discharge .service
.valve .is .closed.
In .a .refrigeration .system, .the .component .directly .following .the .evaporator .is .the? .- .
(correct .answer) .-Accumulator.
Manifold .gauge .set .hoses .should .have .self-sealing .connectors .or .hand .valves .to? .- .(correct .answer) .-
Minimize .the .release .of .refrigerant .when .the .hoses .are .connected .& .disconnected.
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