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Questions and Answers
What is propane when extracted?
What is propane when extracted?
Odorless and colorless
What is the device used on a propane tank to reduce pressure called?
What is the device used on a propane tank to reduce pressure called?
Regulator
What is the boiling point for propane?
What is the boiling point for propane?
-44°F (-42°C)
What happens to propane when it is heated?
What happens to propane when it is heated?
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What is it called when an element or compound changes from the liquid phase to a vapor?
What is it called when an element or compound changes from the liquid phase to a vapor?
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What is the most important factor to consider when working with propane systems?
What is the most important factor to consider when working with propane systems?
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What can propane do when it comes into contact with skin?
What can propane do when it comes into contact with skin?
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Why is it important to wear gloves when using propane?
Why is it important to wear gloves when using propane?
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What should be worn when working with propane?
What should be worn when working with propane?
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How should a service valve on a propane tank be closed?
How should a service valve on a propane tank be closed?
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In a shop environment, what should always be worn?
In a shop environment, what should always be worn?
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What should always be used when transporting or storing propane containers?
What should always be used when transporting or storing propane containers?
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Which service valve is mandatory in the RV industry?
Which service valve is mandatory in the RV industry?
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What is required to be part of ASME tanks that was not required before 1983?
What is required to be part of ASME tanks that was not required before 1983?
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Where can the maximum allowable working pressure on an ASME tank be found?
Where can the maximum allowable working pressure on an ASME tank be found?
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What are the most common securing methods for cylinders?
What are the most common securing methods for cylinders?
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Purging is necessary for which types of containers?
Purging is necessary for which types of containers?
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For purging, you must increase pressure by 15 psi and _____ is the total number of purgings required.
For purging, you must increase pressure by 15 psi and _____ is the total number of purgings required.
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The tare weight of a cylinder is 19 pounds. The propane capacity is 20 pounds. To how many pounds should the cylinder be filled and to what level?
The tare weight of a cylinder is 19 pounds. The propane capacity is 20 pounds. To how many pounds should the cylinder be filled and to what level?
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What pressure will the relief valve function at for compressed air and propane?
What pressure will the relief valve function at for compressed air and propane?
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What can occur if a horizontal cylinder is not stored in its proper position?
What can occur if a horizontal cylinder is not stored in its proper position?
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Which of the following is NOT an appurtenance?
Which of the following is NOT an appurtenance?
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What do black or green connector knobs on Type 1 OPD service valves indicate?
What do black or green connector knobs on Type 1 OPD service valves indicate?
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ASME tanks are usually bolted to what?
ASME tanks are usually bolted to what?
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On double cylinder assemblies, what should be ensured?
On double cylinder assemblies, what should be ensured?
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When purging, what should be avoided?
When purging, what should be avoided?
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What can failure to purge when necessary cause?
What can failure to purge when necessary cause?
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Cylinders should be filled using what method?
Cylinders should be filled using what method?
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When releasing an air/gas mixture of propane, ensure a minimum of _____ feet in every direction between the container and source of ignition.
When releasing an air/gas mixture of propane, ensure a minimum of _____ feet in every direction between the container and source of ignition.
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What does the lockup pressure test verify?
What does the lockup pressure test verify?
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What should be done immediately after conducting the operating pressure test?
What should be done immediately after conducting the operating pressure test?
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Any regulator pressure over _____ inches WC will require the regulator to be replaced.
Any regulator pressure over _____ inches WC will require the regulator to be replaced.
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During a timed pressure drop test, if there is a pressure increase due to thermal expansion _____, and if there is a pressure drop _____
During a timed pressure drop test, if there is a pressure increase due to thermal expansion _____, and if there is a pressure drop _____
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What should be documented for a timed pressure drop test with a test apparatus?
What should be documented for a timed pressure drop test with a test apparatus?
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When adjusting a system regulator, the operating test should show a working pressure of about 11 inches, and the lockup pressure should never exceed _____ inches.
When adjusting a system regulator, the operating test should show a working pressure of about 11 inches, and the lockup pressure should never exceed _____ inches.
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The operating test is used to determine the pressure the regulator is giving when at least _____ of the appliance load is functioning.
The operating test is used to determine the pressure the regulator is giving when at least _____ of the appliance load is functioning.
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A regulator must have a rated capacity equal to or greater than the total Btu/Hr input of what?
A regulator must have a rated capacity equal to or greater than the total Btu/Hr input of what?
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How long should the timed pressure drop test be conducted for?
How long should the timed pressure drop test be conducted for?
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What is the most important reason to document tests?
What is the most important reason to document tests?
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What should be documented for a timed pressure drop test when doing the test at the range?
What should be documented for a timed pressure drop test when doing the test at the range?
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What does DWV mean?
What does DWV mean?
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Why is ABS piping used in the RV industry?
Why is ABS piping used in the RV industry?
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What does an RV water distribution system need?
What does an RV water distribution system need?
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What might a customer experience if they complain of lukewarm water at one or more hot faucets?
What might a customer experience if they complain of lukewarm water at one or more hot faucets?
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Sealants used when building city water test kits should be for what type of water?
Sealants used when building city water test kits should be for what type of water?
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What sealant is most appropriate to use when assembling a city water test kit?
What sealant is most appropriate to use when assembling a city water test kit?
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Which step is part of a freshwater system inspection?
Which step is part of a freshwater system inspection?
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When inspecting a freshwater system, what must be ensured?
When inspecting a freshwater system, what must be ensured?
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How long do demand system and air pressure tests last?
How long do demand system and air pressure tests last?
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NFPA 1192 requires potable water tanks to be _____, _____, and _____ before use.
NFPA 1192 requires potable water tanks to be _____, _____, and _____ before use.
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What is the main purpose of opening the faucets until the water runs clear?
What is the main purpose of opening the faucets until the water runs clear?
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When de-winterizing, what is the purpose of opening the faucet in the coach?
When de-winterizing, what is the purpose of opening the faucet in the coach?
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Choose from _____ grades of antifreeze that are suitable for the _____ when winterizing.
Choose from _____ grades of antifreeze that are suitable for the _____ when winterizing.
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During winterization of an entire RV water system, all water is replaced with what?
During winterization of an entire RV water system, all water is replaced with what?
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What does the liquid waste holding tank contain, and what does the body waste holding tank contain?
What does the liquid waste holding tank contain, and what does the body waste holding tank contain?
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What can an anti-siphon trap device be substituted for?
What can an anti-siphon trap device be substituted for?
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When an RV is equipped with a liquid waste holding system, what test should be performed for 15 minutes during a fixture flood test?
When an RV is equipped with a liquid waste holding system, what test should be performed for 15 minutes during a fixture flood test?
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When conducting PDI of a waste water system, what should be done before a flood test?
When conducting PDI of a waste water system, what should be done before a flood test?
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What is the purpose of pouring another cup of antifreeze down the drain at various sinks when winterizing the waste system?
What is the purpose of pouring another cup of antifreeze down the drain at various sinks when winterizing the waste system?
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After flushing and cleaning holding tanks during winterization, what should be done?
After flushing and cleaning holding tanks during winterization, what should be done?
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Sewage wastewater holding tanks can receive discharge from how many RV fixtures?
Sewage wastewater holding tanks can receive discharge from how many RV fixtures?
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Which test requires the entire drainage system to be filled until water appears at the bottom of the lowest fixture?
Which test requires the entire drainage system to be filled until water appears at the bottom of the lowest fixture?
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What is checked last during a flow test?
What is checked last during a flow test?
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Which statement is true regarding electrons in the outer orbits?
Which statement is true regarding electrons in the outer orbits?
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What is a function of insulators?
What is a function of insulators?
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What is true about the ends of permanent magnets?
What is true about the ends of permanent magnets?
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If a length of wire carrying a current is bent to form a loop, where do the lines of force leave and enter?
If a length of wire carrying a current is bent to form a loop, where do the lines of force leave and enter?
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What is the symbol for current flow?
What is the symbol for current flow?
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What happens when two points of unequal potential or voltage are connected?
What happens when two points of unequal potential or voltage are connected?
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What can be achieved by joining RV batteries in series?
What can be achieved by joining RV batteries in series?
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To properly measure current with a VOM, how must the VOM be connected?
To properly measure current with a VOM, how must the VOM be connected?
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Convert 125 milliamps to amperes.
Convert 125 milliamps to amperes.
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What is the correct setting on a VOM for measuring DC Amperage?
What is the correct setting on a VOM for measuring DC Amperage?
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When using a voltmeter to test for voltage in a simple circuit, how should the meter be connected?
When using a voltmeter to test for voltage in a simple circuit, how should the meter be connected?
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Convert 400 millivolts to volts.
Convert 400 millivolts to volts.
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What is the basic unit of resistance?
What is the basic unit of resistance?
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At constant voltage, double the resistance is equal to _____ the current.
At constant voltage, double the resistance is equal to _____ the current.
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In the final calculations of Ohm's Law, current is always expressed in what unit?
In the final calculations of Ohm's Law, current is always expressed in what unit?
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When an accident occurs, who must it be reported to?
When an accident occurs, who must it be reported to?
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Which of these is associated with system grounding?
Which of these is associated with system grounding?
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What is the intentional grounding of all metal noncurrent carrying parts of the electrical system called?
What is the intentional grounding of all metal noncurrent carrying parts of the electrical system called?
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An electrical circuit is any combination of a _____ and _____ connected together to permit electrons to travel around in a continuous stream.
An electrical circuit is any combination of a _____ and _____ connected together to permit electrons to travel around in a continuous stream.
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Components, devices, and equipment in the RV that utilize low-voltage direct current are often referred to as what?
Components, devices, and equipment in the RV that utilize low-voltage direct current are often referred to as what?
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Receptacles located in which of these places must have GFCI protection?
Receptacles located in which of these places must have GFCI protection?
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Batteries connected _____ provide a higher current capacity.
Batteries connected _____ provide a higher current capacity.
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Electrons are _____, and protons are _____.
Electrons are _____, and protons are _____.
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What is the function of a conductor?
What is the function of a conductor?
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Current is measured in what unit?
Current is measured in what unit?
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Electromotive force is equal to what?
Electromotive force is equal to what?
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What can a parallel RV battery bank allow a technician to do?
What can a parallel RV battery bank allow a technician to do?
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An unknown resistor is connected across a battery. The voltage across it is 12 volts and the current flowing is 4 amperes. What is the resistance of the resistor?
An unknown resistor is connected across a battery. The voltage across it is 12 volts and the current flowing is 4 amperes. What is the resistance of the resistor?
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In reference to current, what is the minimum threshold for irreparable damage to body tissues?
In reference to current, what is the minimum threshold for irreparable damage to body tissues?
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In DC currents, what is the direction of current flow?
In DC currents, what is the direction of current flow?
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Wire size is expressed in terms of what?
Wire size is expressed in terms of what?
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What are the steps for measuring AC current on an analog or digital meter?
What are the steps for measuring AC current on an analog or digital meter?
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When measuring current on an analog or digital meter, how should the meter capacity relate to the expected amperage?
When measuring current on an analog or digital meter, how should the meter capacity relate to the expected amperage?
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When testing for an electrical short during the hot skin test, where should one voltmeter probe be placed?
When testing for an electrical short during the hot skin test, where should one voltmeter probe be placed?
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If the skin of the unit is not hot, what will the voltmeter read?
If the skin of the unit is not hot, what will the voltmeter read?
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When conducting an AC voltage test, an acceptable reading will be at or near what voltage?
When conducting an AC voltage test, an acceptable reading will be at or near what voltage?
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When conducting an AC voltage test, how should the test probes be placed?
When conducting an AC voltage test, how should the test probes be placed?
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Study Notes
Propane Properties and Safety
- Propane is odorless and colorless.
- The pressure-reducing device for propane tanks is a regulator.
- Propane has a boiling point of -44°F (-42°C) and expands when heated.
- Vaporization is the process of converting a liquid into vapor.
- Safety is the primary consideration when working with propane systems.
- Propane is flammable and can cause skin freezing.
Personal Protective Equipment
- Use gloves to protect skin from freeze burns when handling propane.
- Always wear safety glasses in a workshop environment.
- Appropriate gloves are essential when working with propane tanks.
Propane Tank Operations
- Close service valves on propane tanks by hand.
- When transporting or storing propane, use a POL plug or dust cap.
- Type I OPD service valves are required in the RV industry.
- OPD was mandated for ASME tanks after 1983.
Propane Tank Specifications
- The maximum working pressure for ASME tanks is indicated on the data plate.
- Cylinders are typically secured with adjustable straps or T-bars.
- New and contaminated containers require purging.
- The purging process involves increasing pressure by 15 psi and requires five purgings.
Cylinder Filling Protocols
- Tare weight of a cylinder is 19 pounds; fill to 39 pounds, at 80% capacity.
- Relief valves function at 375 psi; improper cylinder positioning can result in liquid propane entering the vapor system.
Appurtenances and Standards
- A mounting bracket is not considered an appurtenance.
- Black or green connector knobs indicate flow rating on Type 1 OPD service valves.
- ASME tanks are typically bolted to the frame of RVs.
Maintenance and Testing Procedures
- Proper installation requires the cylinder tray to be secured to the frame.
- Avoid creating a vacuum when purging containers that previously contained propane.
- Documenting procedures, such as the timed pressure drop test, protects against lawsuits.
Electrical Fundamentals
- DWV stands for drain, waste, and vent in plumbing.
- ABS piping is preferred in RVs for its impact resistance in cold weather.
- DC Loads refer to devices in the RV that use low-voltage direct current.
Water System Inspection
- Freshwater systems require pressure; a leak test is part of an inspection.
- Opening faucets during de-winterizing lets antifreeze out and air in.
- Potable water tanks must be sanitized, flushed, and drained per NFPA 1192 standards.
Waste Management Systems
- Grey water is stored in liquid waste holding tanks, while body waste goes into solid waste holding tanks.
- Static water tests are performed on liquid waste systems during fixture tests.
- Antifreeze should be poured down drains to check if P-traps are sealed.
Electric Current and Resistance
- Current is measured in amps; Ohm’s Law indicates that resistance impacts current flow inversely.
- Battery connections in parallel increase current capacity, while series connections increase voltage.
Meter Usage and Testing
- Always connect a voltmeter in parallel when measuring voltage; for current, series connections are necessary.
- Acceptable AC voltage readings should be around 120VAC.
- Measure current expecting meter capacity to exceed anticipated amperage.
- Place one voltmeter probe on an earth ground and the other on bare metal during hot skin tests.
Important Testing protocols
- Conduct timed pressure drop tests for a minimum of 3 minutes, measuring in inches of water.
- If testing shows pressure drop, locate and repair leaks before re-testing.
- Use the highest current range when measuring AC current.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Prepare for the RVTI Level 1 certification with these flashcards focused on propane. From its properties to the devices used, this quiz will help solidify your understanding of propane-related concepts. Challenge yourself and ensure you're ready for your certification exam.
