THOR MOTOR COACH
IDENTIFICATION AND SAFETY
22
Checking the Propane System for Leaks
ROAD VIBRATION CAN LOOSEN PROPANE FITTINGS. It is important to check
the Propane system for leaks at least every 5,000 miles, and whenever the tank is
filled. It is also a good idea to have the entire Propane system checked annually
by a qualified Propane service representative.
Use the following steps when checking the system for leaks:
1. Open all the windows and vents.
2. Open the gas tank service valve.
3. Use non-ammoniate, non-chlorinated soap solution, or an approved leak detection solution on
all line connections (ammoniate soap solutions can cause cracking on copper or brass lines
and fittings).
4. If a leak is detected, tighten the connection with two open end wrenches until bubbling stops.
DO NOT over tighten, or use excessive force. If the leak continues, contact the motor home
dealer, or a qualified Propane service representative to have an 11" Water Column Test
performed.
About the Propane Gas Detector
Liquefied Petroleum Gas (Propane) is heavier than air and will settle to the lowest point which is generally the
floor of the motor home. The detector is also sensitive to other fumes such as hair spray of which most contain
butane as the propellant. Butane, like Propane, is heavier than air and will settle to the floor level where it will
be detected. When this occurs, press the reset button to stop the alert sound for 60 seconds.
The Propane Gas Detector is powered by the motor home coach batteries and/or the inverter. The detector
will operate properly until the battery is drained down to 10 volts (a low battery condition is 10.4 volts). If the
power source (battery and/or inverter) is disconnected, or if the power is otherwise interrupted, the detector
will not operate.
The Propane Gas Detector has a self check circuit which runs at all times when the detector is powered. In the
event that the circuitry fails, a failure alarm will sound. It is a continuous series of short beep tones between
long intervals and is distinctively different from the alert sound.
Most Common Causes of Apparent Malfunction
Note: The Propane Gas Detector enters a cleaning and initializing mode every time it is
powered. If turned OFF for less than 15 minutes, the Propane Gas Detector may
produce several short “chirps” within the first 80 seconds of operation. This is a
normal function of the LP Gas Detector.
See your Thor Motor Coach Dealer or a qualified Propane Service Center should service be required. If they
are not familiar with this product, have them call the detector manufacturer for assistance. If service is not
available in your area, call MTI Industries.
New Coach Odor: The glues and other materials used
in manufacturing the coach produce vapors which may
be detected when the coach is closed up. Air out the
motor home thoroughly.
Keeps Beeping: The gas detector beeps about once
every minute, even when it is turned off. The problem
is a weak battery in the smoke detector, similar to the
alert sound of the Propane Gas Detector.
Hair Spray Triggers the Detector: Most aerosol hair
sprays use butane gas as the propellant. Butane, like
Propane, is heavier than air and will settle to the oor
level where it will be detected.
Other Gases: Other gases which can cause the
detector to respond with an alert include the vapors
from any fuel, liquor, alcohol, deodorants, colognes,
perfumes, wine, adhesives, lacquer, and most cleaning
agents.
Slow Beep Rate: This could be the failure alarm and
will occur in the event that the circuitry fails. It is a
continuous series of short beep tones between long
intervals and is distinctively different from the alert
sound.
If the problem still exists: Contact MTI Industries for
assistance.
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