Hosing and piping:
Check flexible hoses for cracking and
condition. Check the date stamped on them has not passed.
If the expiry date is close or passed, have the hoses replaced.
Check all rigid piping for adequate support and any damage.
Appliances:
As a guide checking the gas appliances can be
summarised as follows:
• Cleaning: where appropriate, remove cover(s) to gain
access to exchanger. Remove any build up of fluff or other
foreign matter. Re-assemble and test operation. Clean
flame-viewing window.
Operation of controls: Check all knobs etc are secure on
their spindles and that they work smoothly. Check that the
appliance works properly by using normal controls without
forcing. If the gas taps are stiff to operate, ease them open
with an approved LPG grease.
Flame structure:
• Pilot flames should burn quietly and cleanly.
• Refrigerator:When the fridge gas control is turned to
maximum the flame colour should be predominantly blue.
• Water heater:The main burner should burn blue and of
even height.
• Ovens: Flames should be of even height and burn
quietly.The colour should be mainly blue/green but there
will be yellow tips to the flames as the burner heats up.
• Grill burners: Flames may develop yellow tips as they
heat up, especially when using butane.
• General comments:A flame lifting away from the burner
indicates that the pressure is too high. A yellow flame
causes sooting and indicates the pressure is too low. If
these faults occur, recheck the regulator, cylinders and
pipes, adjust as necessary.
• Flues: Check security of fixings, attachments to appliances
and flue terminals. Check for damage and corrosion.
Check for gas leakage into the vehicle.
• Flame failure device (FFD): Check for satisfactory operation
by the following method: after the appliance has been
checked, allow time for the thermocouple to cool.Try to
relight the appliance by turning it on without pushing the
gas control knob in. If the appliance does not light the FFD
is working.
• Security: Check that all appliances are securely fixed to
the vehicle/furniture and that no ‘play’ is present. Where
applicable check that the water pipes are properly attached
and there are no signs of leaks.
9.Water System
Before operating the water system, check the following
items visually for signs of leakage.
Fresh water tank/container:
Check condition. Fill tank and
check for leaks. Check external filler and filler pipe to tank.
Check venting. Check presence and condition of filler cap.
Waste water tank:
Check that the drain tap is clear and working properly. Make
sure that the drain hose is present and in good condition.
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19. Annual Check List
Final 2006 AT Handbook 1/12/05 12:06 pm Page 47