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ASD All Answers Correct 2024
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ASD All Answers Correct 2024 Category 1 ️Category of Water that originates from sanitary water source (Clean) Catetroy 2 ️Category of Water that is contaminated; may cause discomfort or sickness (Grey) Category 3 ️Category of Water that is grossly contaminated; includes toxins, pathogen...

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  • March 14, 2024
  • 26
  • 2023/2024
  • Exam (elaborations)
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ASD All Answers Correct 2024

Category 1 ✔️Category of Water that originates from sanitary water source (Clean)



Catetroy 2 ✔️Category of Water that is contaminated; may cause discomfort or sickness (Grey)



Category 3 ✔️Category of Water that is grossly contaminated; includes toxins, pathogens



Special Situation ✔️Regulated or hazardous materials



Class 1 ✔️Class of water that has least amount of water, absorption and evaporation



Class 2 ✔️Class of water that has large amount of water, absorption and evaporation (carpet; cushion;
base of walls)



Class 3 ✔️Class of water that is the greatest amount of water, absorption and evaporation (ceiling;
walls; insulation; flooring)



Class 4 ✔️Class of water - Hardwood; plaster; concrete - Deep pockets of saturation



Principles of Drying ✔️Remove excess / Evaporation / Dehumidification (Ventilation) / Temperature
Control



Light Wand ✔️Extraction Tool - Perimeter of water loss; extract glue-down carpets



Stationary Tool (Water Claw) ✔️Extraction Tool - Subsurface Tool; Extract Carpet and Cushion.



Self-Propelled Tools ✔️Extraction Tool - (Rober; Xtreme Xtractor) - Riding Tool; multi-speed; extract
carpet and cushion.

,Vacuum Squeegee ✔️Extraction Tool - Concrete; hardwood; vinyl; laminate;



Airmovers ✔️Evaporation Tool - centrifugal (laminar); axial (high-amperage; low amperage; focus
ability)



1 per 10-16 linear ft. of wall area; 15-45 degree focus; almost touching wall. ✔️Placement of Airmovers



Structural Cavity Drying Systems ✔️(SCDS)

vented (turbovents 18" - 48" widths' Octidry; Air Wolf

injected (Injectidry; Dri-Force; Direct-it In)



Floor Drying System ✔️vented (Air Wolf)

Injected - negative air mats (Dri-Force; Injectidry)



Air Filtration Devices ✔️AFDs (negative air machines; air scrubbers; HEPA filters)



AHAM Rating ✔️On dehumidification equipment it is the pints removed at 80 degrees and 60%
humidity in 24 hours.



Standard Refrigerant ✔️Temperature - 68 degress

Relative Humidity - 60%

Specific Humidity (gpp) - 55-60



Conventional ✔️Temperature - 33 degrees

Relative Humidity - 40%

Specific Humidity (gpp) - 55-60



Low Grain Refrigerant (LGR) ✔️Temperature - 40 degrees

Relative Humidity - 30%

, Specific Humidity (gpp) - 28-35



Desiccant ✔️Temperature - 32 degrees

Relative Humidity - 10% - below

Specific Humidity (gpp) - 10-15 - below



Refrigerants ✔️Dehumidifiers that are most efficient operating conditions 70-90 degrees (most energy
efficient)



Desiccants ✔️Dehumidifiers that are most efficient with incoming air from coolest/driest air possible;
capable of creating pressure differentials; produces low specific humidity required to dry Class 4
materials.



Conventional ✔️Initial Dehumidification Calculations

Class 1 = 100

Class 2 = 40

Class 3 = 30

Class 4 = N/A



LGR ✔️Initial Dehumidification Calculations

Class 1 = 100

Class 2 = 50

Class 3 = 40

Class 4 = 50



Desiccant ✔️Initial Dehumidification Calculations

Class 1 = 1 ACH

Class 2 = 2 ACH

Class 3 = 3 ACH

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