Electric Flat Iron Pre-Testing and Diagnosis
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Questions and Answers

What procedure should be followed if the electric flat iron does not heat?

  • Clean the soleplate and restart the device.
  • Use a different outlet without checking the cord.
  • Check the thermostat and ensure the power is on. (correct)
  • Replace the iron immediately.

    • Which of the following is the most critical safety precaution when performing maintenance on an electric flat iron?

  • Always use a sponge for cleaning.
  • Make sure to wear Personal Protective Equipment. (correct)
  • Submerge the flat iron in water for thorough cleaning.
  • Keep the iron plugged in during inspection.

    • What should you do before cleaning an electric flat iron?

  • Soak it in a cleaning solution overnight.
  • Plug it in and allow it to heat up.
  • Turn it off and unplug it, ensuring it is cool. (correct)
  • Use a hairdryer to dry it before cleaning.

    • When replacing defective components, why is it important to consider the original orientation and connection?

    <p>To avoid the risk of further damage and malfunction.</p> Signup and view all the answers

    Which condition is least likely to be the cause of an electric flat iron's inconsistent heating?

    <p>A clean soleplate with no buildup.</p> Signup and view all the answers

    What is the purpose of the Receiving and Repair Form in the appliance servicing process?

    <p>To record the appliance's repair and maintenance details</p> Signup and view all the answers

    Which of the following criteria is weighted the highest in the competency rating for pre-testing an electric flat iron?

    <p>Workmanship</p> Signup and view all the answers

    In the troubleshooting of an electric flat iron, what does a 'DEFECTIVE' condition imply?

    <p>There is a known issue that prevents the appliance from operating correctly</p> Signup and view all the answers

    What is the first step in diagnosing an issue with an electric flat iron according to the performance check?

    <p>Document the customer's complaint on the form</p> Signup and view all the answers

    During the troubleshooting process, what is the significance of performing a 'Corrective Measure'?

    <p>To restore the appliance to a functional state</p> Signup and view all the answers

    Which of the following would NOT be considered a component of good housekeeping during appliance servicing?

    <p>Leaving tools scattered after finishing the job</p> Signup and view all the answers

    What is a symptom that can indicate a potential problem with an electric flat iron?

    <p>The appliance has strange noises when plugged in</p> Signup and view all the answers

    What is the recommended action if a technician forgets to use Personal Protective Equipment during the service?

    <p>The technician loses one point for every instance of neglect</p> Signup and view all the answers

    Which tool is essential for melting solder during electronic repair tasks?

    <p>Soldering Iron</p> Signup and view all the answers

    What is the primary purpose of the mica insulator in an electric flat iron?

    <p>To insulate the heating element from the body</p> Signup and view all the answers

    What is the role of the thermal fuse in an electric flat iron?

    <p>To cut off power supply in case of overheating</p> Signup and view all the answers

    Which of the following items is NOT mentioned as part of the recommended tools for maintenance?

    <p>Electric Drill</p> Signup and view all the answers

    What additional material may be necessary for ironing certain fabrics like cotton?

    <p>Water</p> Signup and view all the answers

    Which of the following tools is used to strip insulation from wires?

    <p>Wire Stripper</p> Signup and view all the answers

    Which part of the electric flat iron is responsible for heating the sole plate?

    <p>Heating element</p> Signup and view all the answers

    Why is it important to document defects found in electronically-controlled domestic appliances?

    <p>To provide a record for future repairs</p> Signup and view all the answers

    What can affect how well fabrics maintain their shape after ironing?

    <p>The combination of heat and moisture</p> Signup and view all the answers

    Which personal protective equipment is necessary when working on electronic appliances?

    <p>All of the above</p> Signup and view all the answers

    What is the minimum amperage rating for an extension cord when using a 220V iron?

    <p>16A</p> Signup and view all the answers

    Which of the following parts is primarily responsible for controlling the temperature of an electric flat iron?

    <p>Thermostat assembly</p> Signup and view all the answers

    If an extension cord is necessary, what consideration should be made regarding the cord's arrangement?

    <p>It should be arranged to avoid pulling or rippling.</p> Signup and view all the answers

    Which component of the electric flat iron is likely to fail in case of an electrical fault, protecting other components?

    <p>Thermal fuse</p> Signup and view all the answers

    What component of the electric flat iron provides visual indication that the appliance is powered on?

    <p>Neon/pilot lamp</p> Signup and view all the answers

    When drawing a schematic diagram of an electric flat iron, which of the following is considered a necessary detail?

    <p>Complete diagram with labels</p> Signup and view all the answers

    Which part of the flat iron consists of the main structure housing other components?

    <p>Body/case</p> Signup and view all the answers

    What is the primary role of the heating element inside the electric flat iron?

    <p>Converting electrical energy into heat</p> Signup and view all the answers

    What potential consequence could occur from using a lower-rated cord with an electric flat iron?

    <p>Overheating and fire hazard</p> Signup and view all the answers

    Which part of the electric flat iron helps users select the heat setting for different fabric types?

    <p>Selector switch</p> Signup and view all the answers

    What will happen when the battery is connected correctly in the circuit?

    <p>The LED will light up immediately upon connection.</p> Signup and view all the answers

    Which component is crucial for altering the time period in the timer circuit?

    <p>The capacitor</p> Signup and view all the answers

    What effect does using a 1000uF capacitor have on the timer period?

    <p>It creates a delay making the time period longer.</p> Signup and view all the answers

    What should you primarily check if the project fails to work?

    <p>The condition of the battery and components.</p> Signup and view all the answers

    Which practice should be monitored to assess 'Housekeeping' during the project?

    <p>Cleaning the workspace after the project is completed.</p> Signup and view all the answers

    How is the competency of 'Use of Tools' determined in the evaluation criteria?

    <p>By the correct application of all tools during the task.</p> Signup and view all the answers

    What practice will cause a deduction in points for the 'Speed' criterion?

    <p>Taking longer than the allowed time by five minutes.</p> Signup and view all the answers

    In the procedure, what should be done with the jumper wire?

    <p>Close the switch to activate the timer once connected.</p> Signup and view all the answers

    What does 'workmanship' in the project evaluation criteria assess?

    <p>The neatness and precision in following procedures.</p> Signup and view all the answers

    Which feature of a modern iron is specifically designed to prevent burns during operation?

    <p>Cord control</p> Signup and view all the answers

    What is the role of the selector switch in an electric flat iron?

    <p>To select the heat level for different fabric types</p> Signup and view all the answers

    What function does the heating element serve in the electric flat iron?

    <p>Provides heat to the soleplate</p> Signup and view all the answers

    Which component is crucial for automatically cutting off the power to prevent overheating in an electric flat iron?

    <p>Thermostat assembly</p> Signup and view all the answers

    What part of the flat iron provides a visual indication that the appliance is functioning?

    <p>Neon/pilot lamp</p> Signup and view all the answers

    Which feature describes a modern electric iron that enhances safety by monitoring the temperature?

    <p>Thermostat assembly</p> Signup and view all the answers

    What type of insulation is commonly used in the electrical cord of modern irons to enhance safety?

    <p>Teflon</p> Signup and view all the answers

    What safety feature in electric flat irons protects against overheating and potential damage?

    <p>Thermal fuse</p> Signup and view all the answers

    What should be documented in the Receiving and Repair Form when servicing an electric flat iron?

    <p>The date checked and defective parts</p> Signup and view all the answers

    Which criterion is least likely to affect the overall rating in the pre-testing and diagnosing performance check for an electric flat iron?

    <p>Brand loyalty towards the tools used</p> Signup and view all the answers

    Which external part of an electric flat iron is primarily responsible for heat transfer to fabric?

    <p>Soleplate</p> Signup and view all the answers

    What consequence occurs if the incorrect use of tools is not documented in the performance evaluation?

    <p>It can lead to a decrease in safety compliance assessments.</p> Signup and view all the answers

    During the performance check, a technician experiences a delay in finishing the task. How does this affect their rating?

    <p>They are penalized one point for every five-minute delay.</p> Signup and view all the answers

    What is the minimum rating an extension cord should have for use with a 220V iron?

    <p>16A</p> Signup and view all the answers

    Which component of the electric flat iron serves to indicate when the appliance is powered on?

    <p>Neon/pilot lamp</p> Signup and view all the answers

    What is the primary function of the thermal fuse in an electric flat iron?

    <p>Prevent overheating by breaking the circuit</p> Signup and view all the answers

    Which part of the electric flat iron is responsible for the actual heating of the soleplate?

    <p>Heating element</p> Signup and view all the answers

    In the context of an electric flat iron's operation, what is the primary purpose of the thermostat assembly?

    <p>To control and maintain the temperature</p> Signup and view all the answers

    What potential hazard arises from using a lower-rated extension cord with a 220V iron?

    <p>Possibility of the cord overheating</p> Signup and view all the answers

    Which component directly affects the heat settings for different fabric types in an electric flat iron?

    <p>Selector switch</p> Signup and view all the answers

    During which process should care be taken to prevent an extension cord from being pulled or rippled over?

    <p>Using the iron while ironing</p> Signup and view all the answers

    Which of the following components is likely to be omitted when creating a schematic diagram of an electric flat iron?

    <p>Electronic control</p> Signup and view all the answers

    What should be done if one or more components are missed when diagramming an electric flat iron?

    <p>Review the components and diagram again</p> Signup and view all the answers

    What primarily causes the heating effect in a wire when electric current flows through it?

    <p>Collisions between electrons and fixed atoms</p> Signup and view all the answers

    Which of the following is NOT an advantage of electric heating?

    <p>Production of combustion gases</p> Signup and view all the answers

    In the context of resistance heating, what does a higher electrical resistance in a wire imply?

    <p>Increased resistance to electron flow</p> Signup and view all the answers

    What component in an electronic timer circuit is responsible for controlling the duration of the timing process?

    <p>The capacitor</p> Signup and view all the answers

    What does the collision of electrons with fixed atoms in a wire primarily convert into?

    <p>Heat energy</p> Signup and view all the answers

    Which type of heating equipment maintains an inherent efficiency of converting electric energy into heat?

    <p>Resistance heaters</p> Signup and view all the answers

    Which of the following describes a correct application of a timer in electrical appliances?

    <p>To enable automatic shut-off for safety</p> Signup and view all the answers

    What underlying principle does the statement 'Energy cannot be created or destroyed' suggest about electric heating?

    <p>Electric energy is transformed into another usable form</p> Signup and view all the answers

    When constructing an electronic timer, what effect does closing the switch have on the LED?

    <p>The LED switches off for a time period</p> Signup and view all the answers

    What aspect of electric heating contributes to its preferred use in various sectors?

    <p>High temperature variability and control</p> Signup and view all the answers

    What preliminary action should be taken for optimal dry ironing results?

    <p>Sprinkle the garments with water evenly at least one hour before ironing</p> Signup and view all the answers

    Which component must be measured for continuity if the iron is not energized?

    <p>Power cord</p> Signup and view all the answers

    What is a recommended corrective measure if the thermostat shows signs of accumulated carbon or dirt?

    <p>Clean the contact points with fine sandpaper</p> Signup and view all the answers

    What is the least likely tool needed for maintaining and repairing an electric flat iron?

    <p>Soldering iron</p> Signup and view all the answers

    Which part is primarily responsible for controlling the heat settings in an electric flat iron?

    <p>Selector switch</p> Signup and view all the answers

    If the power cord is defective, what should be done as a corrective measure?

    <p>Replace the power cord</p> Signup and view all the answers

    During the troubleshooting process, what should be the first check for an electric flat iron with intermittent power?

    <p>Check the alignment of the selector switch</p> Signup and view all the answers

    When troubleshooting an electric flat iron, what does a 'DEFECTIVE' label generally indicate?

    <p>A component is not functioning as intended</p> Signup and view all the answers

    Which step is important to remember when unplugging the electric flat iron?

    <p>Grip the plug and pull it from the outlet</p> Signup and view all the answers

    What is the goal of using the Maintain and Repair Form during appliance service?

    <p>To gather and document information about the defective appliance</p> Signup and view all the answers

    Study Notes

    Accepting and Pre-Testing Appliances

    • Receiving and Repair Form should be completed during the acceptance and pre-testing process.
    • The Maintenance and Repair Form should be completed as well.
    • Provide information on the appliance's status and serviceability.

    Pre-testing and Diagnosing an Electric Flat Iron

    • The pre-testing and diagnosing process should be rated using a five-point scale (5 being the highest).
    • Workmanship, Use of Tools, Use of Personal Protective Equipment, Speed, and Housekeeping are the criteria used for rating.
    • Workmanship is rated by assessing the accuracy of followed steps.
    • Use of Tools is assessed by evaluating the appropriate usage of tools and materials.
    • Use of Personal Protective Equipment is evaluated by gauging the consistency of PPE use throughout the activity.
    • Speed is based on completing the activity within the allotted time.
    • Housekeeping is assessed by observing the cleanliness of the workplace before, during, and after the activity.

    Preparing for Maintenance and Repair

    • Tools, test instruments, and personal protective equipment should be prepared based on job requirements.
    • Acquire service manuals and service information that comply with manufacturer's specifications.
    • Conduct thorough check-ups of electronically-controlled domestic appliances.
    • Document identified defects based on the conducted check-up.

    Tools and Materials for Maintaining an Electric Flat Iron

    • Soldering Iron
    • Long Nose Pliers
    • Diagonal Cutting Pliers
    • Soldering Lead
    • Desoldering Tool
    • Wire Stripper
    • Soldering Stand
    • Utility knife (Blade Cutter)
    • Multitester/ Volt-Ohm-Milliammeter (VOM)
    • Flathead Screwdriver
    • Philip Screwdriver
    • Mask
    • Non-Static Brush
    • Apron
    • ESD Wrist Strap
    • Eye Protector/ Goggles
    • Gloves
    • Electrical Tape

    Operation of an Electric Flat Iron, Parts and Functions

    • The electric flat iron is powered through an electrical cord, which connects to a thermal fuse and a temperature control mechanism leading to the heating element.
    • The heating element, insulated by mica from the body, heats up the soleplate, which is used to remove wrinkles from fabric.
    • The weight of the ironing plate helps stretch the fibers, maintaining the new shape of the fabric when it cools.
    • Water can be used for cotton fabrics to loosen intermolecular bonds.
    • It is recommended to use a 16A cord with a 220V iron if an extension cord is necessary.

    Troubleshooting

    • Conduct a quick diagnosis of the symptom and repair the defective appliance quickly.
    • Secure a circuit diagram.
    • If the iron doesn't heat, check the power outlet, the electrical cord, and the thermostat.
    • Always suspect a faulty contact on the mechanical switch circuit rather than a defective electronic/electrical part.
    • If the iron produces too much or too little heat, test the electrical cord for loose wiring and connections.
    • Adjust calibration of the thermostat if needed.
    • Use personal protective equipment.

    Maintenance and Cleaning

    • Turn off and unplug the iron, ensuring it is cool, before cleaning.
    • Refer to the owner's manual for manufacturer's cleaning recommendations.
    • Use a sponge and commercial soleplate cleaner or baking soda and water to remove dirt buildup.
    • Rinse thoroughly with water and dry.
    • Do not submerge the iron in water or cleaning liquid.
    • Use very fine emery cloth or sandpaper to remove scratches and burns on the soleplate.
    • Avoid harsh abrasives.

    Maintain and Repair an Electric Flat Iron

    • Perform the maintenance/repair procedure using the provided resources, tools, and equipment.
    • Prioritize safety precautions at all times.
    • Use the information provided in the lesson.
    • Designate a classmate as the owner of the electric flat iron.

    Modern Irons

    • Irons have a thermostat for constant temperature maintenance.
    • Irons have a temperature control dial marked with fabric types.
    • Irons have a cord with heat resistant Teflon insulation.
    • Irons have a steam feature.
    • Irons have a cord control, anti-burn control, energy-saving control, or the option to be cordless.

    Basic Parts of an Electric Flat Iron

    • AC line cord connects the iron to the power source.
    • Selector Switch controls the heat level for different fabrics.
    • Thermal fuse is a safety device that cuts off the circuit if the iron overheats, preventing damage.
    • Heating element made of nichrome wire inside a metal tube generates heat.
    • Soleplate is the base metal that presses against fabric and contains the heating element.
    • Handle allows users to hold and control the iron.
    • Body/Case protects the internal components and shields the user's hand from the heat.
    • Neon/Pilot lamp indicates power flow to the heating element.
    • Thermostat assembly regulates the temperature of the iron.
    • Electronic control is a modern feature that acts as a timer or automatic power-off switch for safety.

    Diagnosing and Troubleshooting an Electric Flat Iron

    • Symptom: Flat iron not energized.
      • Possible Defects: Power cord, thermal fuse, selector switch, thermostat, heating element.
      • Procedure: Test continuity of components with an ohmmeter.
      • Corrective Measure: Replace the defective component.
    • Symptom: Intermittent power or heat.
      • Possible Defect: Thermostat.
      • Procedure: Check the thermostat contact points for carbon buildup or dirt.
      • Corrective Measure: Clean contact points with fine sandpaper. Adjust the temperature knob if necessary.

    Electronic Timer Control

    • An electronic timer control circuit uses a transistor, capacitor, resistor, and LED for auto shut-off.
    • When powered by a 9V battery, the LED switches on.
    • Closing a switch starts the timer, causing the LED to switch off for a set time period.
    • After the time period ends, the LED switches back on.

    Activity 1.1: Electronic Timer Control

    • Build an electronic timer control circuit using a breadboard.
    • To improve dry ironing results, sprinkle garments with water evenly at least one hour before ironing.
    • Always unplug the iron by gripping the plug and pulling it from the outlet. Never pull the cord.

    Activity 2.1: Pre-testing and Troubleshooting Electric Flat Iron

    • Gather information about the defective appliance using a Maintain and Repair Form.
    • Perform pre-testing and troubleshooting procedures on a flat iron.
    • Document the progress of the activity on a receiving and repair form.
    • Receiving and Repair Form:
      • Record customer's information, appliance details, and the complaint.
      • Examine the appliance's external parts.
      • Identify symptoms and possible defects.
      • Perform the necessary procedures.
      • Document corrective measures taken.

    Performance Check 3.1: Pre-testing and Diagnosing/Troubleshooting an Electric Flat Iron

    • Rate your competence in pre-testing and diagnosing an electric flat iron using the provided criteria.
    • Evaluate your proficiency in:
      • Workmanship
      • Use of Tools
      • Use of Personal Protective Equipment
      • Speed
      • Housekeeping

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    Quarter II: Maintaining and Repairing Electric Flat Irons PDF

    Description

    This quiz covers the processes involved in accepting, pre-testing, and diagnosing electric flat irons. It includes criteria for evaluating workmanship, tool usage, personal protective equipment, speed, and housekeeping. Participants will enhance their understanding of appliance serviceability and maintenance protocols.

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