EPA 608 (TYPE II) Exam Questions And ANSWERS.

EPA 608 (TYPE II) Exam Questions And
ANSWERS


When .a .new .system .has .been .assembled, .the .first .thing .to .do .is? .- .(correct .answer) .-Pressurize
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.the .system .with .an .inert .gas .& .leak .check.
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After .installation .of .a .field-piped .R-410A .split .heat .pulp, .the .unit .should .first .be? .- .(correct
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.answer) .-Pressurized .with .nitrogen .then .leak .checked.
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The .EPA .regulations .require .that .any .appliances .containing .more .than .50 .pounds .of .refrigerant .
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(except .for .commercial .& .industrial .process .refrigeration) .must .be .repaired .when .the .leak .rate
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.exceeds ._________ .of .the .charge .per .year? .- .(correct .answer) .-15%
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R-410A .requires .recovery .tanks .rated .for .at .least? .- .(correct .answer) .-400 .psig
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After .refrigerant .liquid .has .been .recovered .from .a .system, .any .remaining .vapor .is? .- .(correct
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.answer) .-Condensed .by .the .recovery .system.
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Your .recovery/recycling .machine .has .R-502 .refrigerant .in .it. .You .now .have .to .recover .refrigerant
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.from .a .unit .with .R-22. .What .must .be .done .before .the .R-22 .refrigerant .can .be
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.recovered/recycled? .- .(correct .answer) .-Recover .as .much .R-502 .from .the .recovery .unit .as
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.possible, .change .filter, .& .evacuate.
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In .a .refrigeration .system .with .a .TXV .(or .other .type .of .throttling .device), .the .component .directly
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.following .the .condenser .is .the? .- .(correct .answer) .-Receiver
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When .charging .an .R-410A .system .that .uses .a .water-cooled .condenser, .you .must .first .charge
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.with .vapor .to .a .pressure .of .at .least________, .before .switching .to .liquid .charging. .- .(correct
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.answer) .-120 .psig
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Recovered .refrigerant .may .contain .what? .- .(correct .answer) .-1.) .Acids
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2.) .Moisture
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3.) .Oils kr

, Your .recovery/recycling .machine .has .R-22 .refrigerant .in .it. .You .now .have .to .recover .refrigerant
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.from .a .unit .with .R-410A. .What .must .be .done .before .your .recovery .unit .can .be .used .to
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.recover .R-410A? .- .(correct .answer) .-1.) .The .recovery .unit .must .be .EPA .certified .for .use .with .R-
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410A.



2.) .The .recovery .tank .must .be .designed .for .the .pressure .of .R-410A.
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3.) .The .filter .& .lubricant .in .the .recovery .unit .must .be .changed, .& .the .recovery .unit .evacuated.
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To .recover .liquid .refrigerant, .you .must .connect .one .hose .to .the? .- .(correct .answer) .-Liquid .Line.
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The .proper .charging .method .for .blended .(non-azeotropic) .refrigerants .(400 .Series) .is .to .use .a
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.remove .the .charge .from .the .cylinder .as .a? .- .(correct .answer) .-Liquid
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Before .using .a .recovery .unit .to .remove .a .charge, .what .steps .should .be .taken? .- .(correct
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.answer) .-1.) .Check .service .valve .positions.
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2.) .Check .the .oil .level .in .the .recovery .unit.
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3.) .Evacuate .recovery .unit .& .recovery .tank.
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On .refrigeration .units .that .use .an .open .compressor; .the .________ .is .most .likely .to .leak .if .the
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.unit .is .not .used .for .several .months. .- .(correct .answer) .-The .rotating .shaft .seal.
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Noncondensables .in .a .system .cause? .- .(correct .answer) .-Higher .discharge .pressure. kr kr kr kr kr kr kr kr kr kr




Heat .Pumps .that .use .R-410A .should .be .leak .checked .with? .- .(correct .answer) .-Pressurized
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.Nitrogen.
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A .reciprocating .compressor .should .not .be .energized .when? .- .(correct .answer) .-The .discharge
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.service .valve .is .closed.
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In .a .refrigeration .system, .the .component .directly .following .the .evaporator .is .the? .- .(correct
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.answer) .-Accumulator.
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Manifold .gauge .set .hoses .should .have .self-sealing .connectors .or .hand .valves .to? .- .(correct
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.answer) .-Minimize .the .release .of .refrigerant .when .the .hoses .are .connected .& .disconnected.
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