RVTI Level 1 Propane Tests – Questions With Objective
Solutions
Timed Pressure Drop Test Accurate Answer:- 1. Use proper PPE for
safety inspection and demonstrate safety rules
2. Connect the manometer to the barbed fitting on the tester
3. Open tank service valve to pressurize system
4. Fully close the tank service valve
5. Open the orifice valve on the test apparatus and reduce the measured
pressure on the manometer to approx 8 WC inches then turn the orifice valve
off
6. Wait 3 minutes
7. If there is no drop in pressure, the system is leak-free
8. If the pressure drops ANY amount, there is a leak and further
troubleshooting is required
Setting Operating Pressure Accurate Answer:- 1. Use proper PPE for
safety inspection and demonstrate safety rules
2. Open tank service valve to pressurize the system
3. Slowly open the orifice valve on the test apparatus
4. Slowly open the manometer valve on the test apparatus
5. Note the pressure measurement - should be 11 WC inches
6. Adjust the pressure in minor increments on the 2nd stage of the regulator
until 11 WC inches are measured
Lockup Pressure Test Accurate Answer:- 1. Use proper PPE for safety
inspection and demonstrate safety rules
2. Close orifice valve on test apparatus while watching the manometer
measurements - it should increase slightly
3. It will likely incerase about 1 WC inch above the set pressure - but should
never exceed 14 WC
4. Record the lock-up pressure measurement. If it exceeds 14 WC inches or
continues to creep higher, the regulator is faulty and needs to be replaced
NOTE: Retest the lock-up pressure every time the regulator pressure is
adjusted
Conclude Testing:
,1. Once the regulator is properly adjusted, has passed the lock-up test and the
system is deemed leak-free, remove the test apparatus
2. Reconnect the low-pressure hose to the regulator output fitting
3. Bubble test for any leaks at reconnection
Bubble Leak Test Accurate Answer:- 1. Use proper PPE for safety
inspection and demonstrate safety rules
2. Open the container service valve and bubble test all fittings that had been
removed and reinstalled during test procedures using the appropriate leak
detection solution
Document Test Results Accurate Answer:- 1. RV year, make, model and
VIN
2. Air and system piping temperature
3. Date and start/end times of testing
4. Type of manometer used - if gauge, including the date of the last calibration
5. All adjustments performed including the final adjusted pressure
measurement
6. Technician's full name and signature
What is the minimum duration for a PDI Timed-Pressure Drop Test for the
propane system? Accurate Answer:- 3 minutes.
While performing a PDI, what is the highest allowable pressure for a regulator
lock-up test? Accurate Answer:- 14" W.C.
What would be the optimal propane system operating pressure during the PDI
system operating pressure test? Accurate Answer:- 11" W.C.
During a PDI Timed Propane Pressure Drop Test, what appliance is the
manometer attached to in order to monitor gas pressure? Accurate
Answer:- Range burner.
What process is used in the PDI to adjust the propane line pressure to the
appropriate testing pressure during a timed propane pressure drop test?
Accurate Answer:- Open a second burner to reduce the line pressure to 8"
W.C. (nominal) and turn it off after achieving 8" W.C.
, What is the first step listed on the PDI Propane Timed Pressure-Drop Sign-Off
Sheet? Accurate Answer:- Prepare document (PDI Form) to record
timed pressure-drop test results.
What is the purpose of performing a PDI Hot Skin test? Accurate Answer:-
To protect the RV owner from coming in contact with dangerous electric
voltage.
In a PDI Polarity Test, what line of the circuit does the narrow blade on the
tester represent? Accurate Answer:- The "Hot" line of the circuit.
Vendors of Permanent Mount Generators Accurate Answer:-
Manufacturers that produce generators designed to be permanently installed
in RVs.
Vendors of Portable Generators Accurate Answer:- Manufacturers that
produce generators designed for mobility and temporary use.
Fuel Sources Accurate Answer:- The three main types of fuel used to
power RV generators: Gasoline, Diesel, and Propane.
Fuel Filter Location Accurate Answer:- Typically located in the fuel line
between the fuel tank and the carburetor.
Factors Influencing Generator Capacity Accurate Answer:- Three
factors that can influence the capacity of a generator: Altitude, Temperature,
and Load.
Types of Generators Accurate Answer:- The two main types of
generators discussed: Permanent Mount and Portable Generators.
Safety Procedures for Generators Accurate Answer:- Examples include
ensuring proper ventilation and disconnecting the generator before servicing
electrical components.
Importance of Verifying Generator Installation Accurate Answer:- To
ensure safe and reliable operation, and to prevent damage to the RV.
Solutions
Timed Pressure Drop Test Accurate Answer:- 1. Use proper PPE for
safety inspection and demonstrate safety rules
2. Connect the manometer to the barbed fitting on the tester
3. Open tank service valve to pressurize system
4. Fully close the tank service valve
5. Open the orifice valve on the test apparatus and reduce the measured
pressure on the manometer to approx 8 WC inches then turn the orifice valve
off
6. Wait 3 minutes
7. If there is no drop in pressure, the system is leak-free
8. If the pressure drops ANY amount, there is a leak and further
troubleshooting is required
Setting Operating Pressure Accurate Answer:- 1. Use proper PPE for
safety inspection and demonstrate safety rules
2. Open tank service valve to pressurize the system
3. Slowly open the orifice valve on the test apparatus
4. Slowly open the manometer valve on the test apparatus
5. Note the pressure measurement - should be 11 WC inches
6. Adjust the pressure in minor increments on the 2nd stage of the regulator
until 11 WC inches are measured
Lockup Pressure Test Accurate Answer:- 1. Use proper PPE for safety
inspection and demonstrate safety rules
2. Close orifice valve on test apparatus while watching the manometer
measurements - it should increase slightly
3. It will likely incerase about 1 WC inch above the set pressure - but should
never exceed 14 WC
4. Record the lock-up pressure measurement. If it exceeds 14 WC inches or
continues to creep higher, the regulator is faulty and needs to be replaced
NOTE: Retest the lock-up pressure every time the regulator pressure is
adjusted
Conclude Testing:
,1. Once the regulator is properly adjusted, has passed the lock-up test and the
system is deemed leak-free, remove the test apparatus
2. Reconnect the low-pressure hose to the regulator output fitting
3. Bubble test for any leaks at reconnection
Bubble Leak Test Accurate Answer:- 1. Use proper PPE for safety
inspection and demonstrate safety rules
2. Open the container service valve and bubble test all fittings that had been
removed and reinstalled during test procedures using the appropriate leak
detection solution
Document Test Results Accurate Answer:- 1. RV year, make, model and
VIN
2. Air and system piping temperature
3. Date and start/end times of testing
4. Type of manometer used - if gauge, including the date of the last calibration
5. All adjustments performed including the final adjusted pressure
measurement
6. Technician's full name and signature
What is the minimum duration for a PDI Timed-Pressure Drop Test for the
propane system? Accurate Answer:- 3 minutes.
While performing a PDI, what is the highest allowable pressure for a regulator
lock-up test? Accurate Answer:- 14" W.C.
What would be the optimal propane system operating pressure during the PDI
system operating pressure test? Accurate Answer:- 11" W.C.
During a PDI Timed Propane Pressure Drop Test, what appliance is the
manometer attached to in order to monitor gas pressure? Accurate
Answer:- Range burner.
What process is used in the PDI to adjust the propane line pressure to the
appropriate testing pressure during a timed propane pressure drop test?
Accurate Answer:- Open a second burner to reduce the line pressure to 8"
W.C. (nominal) and turn it off after achieving 8" W.C.
, What is the first step listed on the PDI Propane Timed Pressure-Drop Sign-Off
Sheet? Accurate Answer:- Prepare document (PDI Form) to record
timed pressure-drop test results.
What is the purpose of performing a PDI Hot Skin test? Accurate Answer:-
To protect the RV owner from coming in contact with dangerous electric
voltage.
In a PDI Polarity Test, what line of the circuit does the narrow blade on the
tester represent? Accurate Answer:- The "Hot" line of the circuit.
Vendors of Permanent Mount Generators Accurate Answer:-
Manufacturers that produce generators designed to be permanently installed
in RVs.
Vendors of Portable Generators Accurate Answer:- Manufacturers that
produce generators designed for mobility and temporary use.
Fuel Sources Accurate Answer:- The three main types of fuel used to
power RV generators: Gasoline, Diesel, and Propane.
Fuel Filter Location Accurate Answer:- Typically located in the fuel line
between the fuel tank and the carburetor.
Factors Influencing Generator Capacity Accurate Answer:- Three
factors that can influence the capacity of a generator: Altitude, Temperature,
and Load.
Types of Generators Accurate Answer:- The two main types of
generators discussed: Permanent Mount and Portable Generators.
Safety Procedures for Generators Accurate Answer:- Examples include
ensuring proper ventilation and disconnecting the generator before servicing
electrical components.
Importance of Verifying Generator Installation Accurate Answer:- To
ensure safe and reliable operation, and to prevent damage to the RV.
