About Lpg; Fault Finding; Combustion; Pressure - Alde Compact 3000 92X Manual

as described above

ABOUT LPG

The properties of LPG
LPG is a petroleum product, formally
known as "liquid petroleum gas". It is
mainly made up of propane and butane
gas. The advantage of propane is that
it remains gaseous at temperatures as
low as -40°, while butane loses effecti-
veness at +10°C. For this reason, pro-
pane is used in colder countries.
The cylinders contain LPG both in liquid
and gaseous form. When the cylinders
are filled, the pressure turns the gas
into liquid. When the cylinder valve is
opened, the LPG becomes a gas again.
The risk involved in using LPG is
that any leaking gas may ignite and
explode. Since LPG is heavier than air,
any leaking gas will collect at the lowest
point.
LPG contains no toxic substances, but
breathing in concentrated gas may
have a certain anaesthetising effect,
and can also result in shortness of
breath and symptoms of suffocation.
These symptoms quickly disappear if
the sufferer breathes in ordinary air or
oxygen. Naturally, it is inadvisable to
inhale either LPG or exhaust fumes.
To make it easier to detect gas leaks,
a substance with a distinctly rank smell
has been added.

Combustion

Complete combustion of LPG only
generates carbon dioxide (CO
water vapour, just like the air we exhale.
A good supply of air is essential to
ensure complete combustion. The
centre of the flame should be blue/
green. LPG is extremely environmen-
tally-compatible and does not generate
any soot during complete combustion.
It can be stored in cylinders for an unli-
mited time period, without any deterio-
ration of quality.

Pressure

The LPG burner usually works at a
lower pressure than that in the cylinder.
The most common pressure is a low
pressure (0-50 mbar) which is created
by allowing the gas to pass through a
reduction valve. There is also interme-
diate pressure (50 mbar-2.0 bar) and,
finally, high pressure (over 2.0 bar),
which is unreduced pressure mainly
used in camping equipment. Low pres-
sure and intermediate pressure are
always reduced pressure.

FAULT FINDING

The boiler does not start
1. No LPG?
2. Is the main tap fully open?
3. If the boiler has not been operated
for some time, or if the gas cylinder
as been changed, it may take longer
than normal to light the boiler.
4. Check that the boiler is connected to
the electricity supply (> 11 V).
5. Check that the fuse (T) for the boiler
is intact.
6. Check whether the overheating pro-
tection has been tripped by un-
screwing the black plastic cap (U)
and pressing the reset button (V).
NB! If the overheating protection
has been tripped it cannot be reset
until the boiler has cooled down by
10-20°C. Before restarting the boiler,
check that it has been properly bled.
7. Check whether the red LED on
the control panel has gone out. If
not, switch off the boiler. Wait 30
seconds, and then try restarting it.
8. Check that the boiler's electrical con-
) and
2
GB
U
T
V
nections are properly attached
9. If none of these help, please contact
a service company.
The heating cartridge is not
working
1. Check that there is an electricity
supply (230 V ~) to the heating
cartridge.
2. Check that the relays fitted to the
boiler come on (a slight click can be
heard from the relays when the hea-
ting cartridge is switched on at the
control panel).
3. Check whether the overheating pro-
tection has been tripped by unscre-
wing the black plastic cap (U) and
pressing the reset button (V).
NB! If the overheating protection
has been tripped it cannot be reset
until the boiler has cooled down by
10-20°C. Before restarting the boiler,
check that it has been properly bled.
4. If none of these works, please con-
tact a service company.
GUARANTEE
Alde's guarantee is valid for one year
from the date of delivery and only
covers materials or manufacturing
faults, provided that the directions for
installation and use have been followed.
The guarantee does not cover frost
damage.
NB! Only Alde original parts should be
used as replacement parts.
11