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ASD QUESTIONS & ANSWERS

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ASD QUESTIONS & ANSWERS Category 1 - ANS-Category of Water that originates from sanitary water source (Clean) Catetroy 2 - ANS-Category of Water that is contaminated; may cause discomfort or sickness (Grey) Category 3 - ANS-Category of Water that is grossly contaminated; includes toxins, pathoge...

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  • January 29, 2024
  • 28
  • 2023/2024
  • Exam (elaborations)
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ASD QUESTIONS & ANSWERS
Category 1 - ANS-Category of Water that originates from sanitary water source (Clean)



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



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



Special Situation - ANS-Regulated or hazardous materials



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



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



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



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



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



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



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

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



Vacuum Squeegee - ANS-Extraction Tool - Concrete; hardwood; vinyl; laminate;



Airmovers - ANS-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. - ANS-Placement of
Airmovers



Structural Cavity Drying Systems - ANS-(SCDS)

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

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



Floor Drying System - ANS-vented (Air Wolf)

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



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



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



Standard Refrigerant - ANS-Temperature - 68 degress

Relative Humidity - 60%

Specific Humidity (gpp) - 55-60

, Conventional - ANS-Temperature - 33 degrees

Relative Humidity - 40%

Specific Humidity (gpp) - 55-60



Low Grain Refrigerant (LGR) - ANS-Temperature - 40 degrees

Relative Humidity - 30%

Specific Humidity (gpp) - 28-35



Desiccant - ANS-Temperature - 32 degrees

Relative Humidity - 10% - below

Specific Humidity (gpp) - 10-15 - below



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



Desiccants - ANS-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 - ANS-Initial Dehumidification Calculations

Class 1 = 100

Class 2 = 40

Class 3 = 30

Class 4 = N/A



LGR - ANS-Initial Dehumidification Calculations

Class 1 = 100

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