Thor Motor Coach 2009 Mandalay, Owner'S Manual

Page: 161 / 190

MANDALAY
Never use an open flame of any kind to test this unit. The built-in test switch accurately
tests the unit’s operation as required by Underwriters Laboratories, Inc. (UL).
Simply press the TEST switch any time during the warm-up cycle or while in normal
operation. The LED should flash red and the alarm should sound. Release the switch. This is
the only way you should test your detector. The test feature checks the full operation of the
detector. If this detector does not test properly, return it immediately for repair or replacement.
TEST: This test procedure should be repeated every week or every time the motorhome is
taken on a trip, whichever occurs first.
REFERENCE: Refer to the manufacturer’s owner’s manual or call the detector manufacturer,
if you have any questions about the Propane Gas Detector.
Never check for leaks with an open flame. The scent of Propane Gas (a garlic-like odor)
is actually ethyl mercaptan, an additive that allows you to detect the presence of a leak,
since Propane Gas is naturally odorless. Do not rely upon being able to detect the smell
of the gas, as the odor may fade.
Road vibration can loosen Propane Gas 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 Gas system checked annually by a qualified Propane Gas 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 recreation vehicle dealer or a qualified Propane Gas service representative
to have an 11" Water Column Test performed.
11-7
PROPANE GAS SYSTEMS
How to Test
Checking the Propane Gas System for Leaks