Operating instructions

12-4
SERVICE DETAILS
SECTION 7 - ELEVATING ROOFS
Solid Side Wall
Check sides and end panels fold up and
down correctly, that they seal against each
other where appropriate and that retaining
mechanisms are satisfactory. Check all
hinges for security and freedom from strain.
Locking of Roof
It is important to ensure that, when the roof is
in the travelling position, it is safely and
positively locked down. Any locking retaining
mechanism should be carefully examined.
SECTION 8 - GAS SYSTEMS
Cylinders, Regulators and Feed Hoses
Establish that the cylinder and feed hose is
compatible.
Since the introduction of BS EN1949 the gas
pressures for Butane (blue) cylinders and
propane (red) cylinders have been
harmonised across Europe. The gas system
pressure is now 30mbar for both gases.
The gas regulator is now fitted as standard
equipment by Auto-Sleepers. Your supplying
dealer will need to supply you with the correct
hose compatible with the cylinder to be fitted.
Check cylinder compartment vents and gas
drop hole in floor are free from obstruction.
Check seals on internal doors.
Hose and Piping
Check any flexible hose is of an approved
type. Check its condition and any evidence of
cracking.
The maximum permissible hose length is
400mm, longer hoses should not be used.
The hose length is the length of the flexible
portion of the hose assembly. Do not use
external cylinders and or extension hoses.
Check piping for condition, damage and
correct support.
Carry out an overall leak test.
Appliances
In general, the checking of gas appliances
can be divided into the following:
1. Cleaning.
2. Operation of controls.
3. Correct flame structure.
4. Flues.
5. Flame failure device.
6. Security.
Cleaning
• Where apprpriate, remove cover(s) to
gain access to heat exchanger. Clean
away any fluff or foreign matter.
Reassemble and test. Clean flame
viewing window.
Controls
• Check that all knobs etc. work smoothly
and are secure on their spindles. If gas
taps require greasing to ease stiffness,
use only approved LPG grease. Check
that appliances can be brought into
service using the normal controls.
Correct Flame Structure
• Check that all pilot flames burn quietly
and clearly.
Refrigerator: With the refrigerator gas control
turned to maximum, the colour of the flame
should be predominantly blue.
Instantaneous Water Heating: The main
burner flame should be of even height and
blue in colour. A flame burning yellow will
allow sooting to occur.
Ovens: The oven flame should burn quietly
and be of even height, mainly blue/green in
colour. If the gas is propane, the flame will
normally develop yellow tips as the burner
heats up. If the gas is butane, a small amount
of yellow tipping will be seen immediately
after lighting, increasing as the burner heats
up.
Grill Burners: It is normal for the flames on
this type of burner to develop yellow tips as it
heats up, particularly on butane.
General: A flame lifting away from the
burners is an indication of too high a