Questions and Answers
What category of water originates from a sanitary water source?
Which category of water is contaminated and may cause discomfort or sickness?
What class of water has the least amount of water absorption and evaporation?
What is the purpose of Air Filtration Devices?
Signup and view all the answers
What does AHAM Rating refer to?
Signup and view all the answers
The formula for BTUs per hour is _____ x volts x 3.4.
Signup and view all the answers
The HVAC removes _________ BTUs per ton.
Signup and view all the answers
Residential is generally ___ amp.
Signup and view all the answers
Commercial is generally ___ amp.
Signup and view all the answers
What must be done before the drying of a category 2 water loss can continue?
Signup and view all the answers
What does the term 'Balanced Drying' refer to?
Signup and view all the answers
What influences the movement toward equilibrium?
Signup and view all the answers
What is Psychrometry?
Signup and view all the answers
What is the definition of Evaporation?
Signup and view all the answers
Moisture content in materials is referred to as _____ when compared to oven-dried material.
Signup and view all the answers
What are the types of damages from moisture in wood?
Signup and view all the answers
Study Notes
Water Categories
- Category 1: Clean water from a sanitary source.
- Category 2: Grey water, potentially contaminated; may cause discomfort or sickness.
- Category 3: Grossly contaminated water containing toxins and pathogens.
Water Classes
- Class 1: Least amount of water with minimal absorption and evaporation.
- Class 2: Significant water present; affects carpet, cushion, and walls.
- Class 3: Extensive water; impacts ceilings, walls, insulation, and flooring.
- Class 4: Deep saturation in hardwood, plaster, and concrete.
Principles of Drying
- Core methods include removing excess moisture, enhancing evaporation, dehumidification, ventilation, and regulating temperature.
Extraction Tools
- Light Wand: Extracts water from perimeter areas and glue-down carpets.
- Stationary Tool (Water Claw): Subsurface extraction for carpet and cushion.
- Self-Propelled Tools: Equipped with multiple speeds; extract carpet and cushion.
- Vacuum Squeegee: Designed for concrete, hardwood, vinyl, and laminate surfaces.
Air Movement
- Airmovers: Centrifugal and axial types, used for evaporation; proper placement involves one unit per 10-16 linear feet of wall area.
Drying Systems
- Structural Cavity Drying Systems (SCDS): Employ vented (turbovents) and injected systems.
- Floor Drying Systems: Include vented and negative air mats for effective moisture removal.
Air Filtration
- Air Filtration Devices (AFDs): Devices like air scrubbers and HEPA filters that clean the air.
Dehumidification Metrics
- AHAM Rating: Indicates pints removed per day at specified temperature and humidity.
- Various types of refrigerants can operate efficiently at different humidity and temperature levels.
Electrical Fundamentals
- Amperes: Measure of electric current in a circuit.
- Voltage: The pressure that pushes electrical current.
- Watts: Power consumption of electrical devices.
Moisture Measurement
- Moisture Sensor: Measures moisture content over 17% MC, helps define water damage perimeter.
- Thermo-hygrometer: Evaluates temperature and relative humidity to guide drying efforts.
- Moisture Meter: Both invasive and non-invasive; assesses moisture content to determine drying completion.
Regulatory Agencies
- EPA: Oversees biocide regulations.
- FIFRA: Governs federal regulations regarding pesticides.
Carpet Methods
- Installation Types: Stretch-in, direct glue-down, and double glue down.
- Drying Methods: In-place, full float, and partial float methods for carpets.
Wood and Moisture Relations
- Fungal Growth: Specific moisture content (over 16% for non-destructive and over 20% for destructive growth).
- Moisture Content (MC): Represents weight or percentage of moisture in materials compared to dry weight.
Drying Techniques
- Open Drying: Involves exchanging indoor air with outdoor air; requires vigilance to prevent microbial growth.
- Closed Drying: Utilizes mechanical dehumidification for moisture control.
Additional Concepts
- Psychrometry: Examines the interplay between air, humidity, and temperature.
- Balanced Drying: Achieving optimal dehumidification while evaporating moisture.
- Equilibrium: The principle that moisture and temperature balance out in drying processes.
Restorative Drying Process
- Involves assessment, documentation, controlled drying, and selective replacement of damaged materials. Initial critical action is rapid response to water damage.
Safety Protocols
- Identifying safety hazards is the technician's priority upon arriving at a water damage site.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on different categories of water and their definitions. From clean sanitary water to grossly contaminated water, understand the various types and their implications. This quiz will enhance your awareness of water quality standards.
