Superabrasive
Owner’s Manual Original Language – Lavina
®
32G-X/GTX
7/2019
10
Vapor draw
The liquid draw cylinder is used on larger
vehicles like forklifts. These machines have special
vaporizing carburetors to allow the propane to change
from a liquid to a gas before being burned in the
combustion chamber.
The vapor draw cylinder is used on small
machines like the propane powered floor care machines.
The vacuum generated by the engine draws up the
Propane gas vapor through the fuel system. The propane
powered floor care machine does not have an
evaporating system and will freeze up if liquid propane is
introduced to it. It is necessary that special attention be
paid to ensure that neither the liquid nor the vapor draw
cylinders be overfilled.
REFUELLING CYLINDERS
The proper filling of propane cylinders is a subject
so important that it warrants special attention. Propane
cylinders should only be filled by qualified propane
dealers.
Most important, propane cylinders should be filled
no more than 80% of their rated capacity. The other 20%
is called the vapor space or headspace. This vapor can
be compressed without causing the pressure relief valve
to open and vent gas to the area around the cylinder. If
there is no headspace to allow for fuel expansion, the
pressure relief valve will open, releasing propane gas into
the atmosphere. This is a very dangerous and volatile
situation as there is always the possibility that enough of
the vented gas could find its way down to the floor and
come in contact with a pilot light from a furnace, hot water
heater, or other source of ignition. Propane changes into
a gas, is -
44º F (-42º C). Exposing unprotected skin to
propane gas or liquid could result in frostbite injury.
All new cylinders should be vented and purged of
air per manufacturer’s instructions before use. Never
bleed propane cylinders indoors.
STORAGE CYLINDERS
When not in use, propane cylinders always
should be stored outside in an upright position in a
secure, tamperproof, steel mesh storage cabinet. This
cabinet may be located next to the building but with at
least five feet (1.5 m) of space between the cabinet and
the nearest building opening (door or window), also away
from heat and direct sunlight.
Do not install the cabinet near a stairway or street
elevator as vented propane gas will seek a lower level
since it is heavier than air and could find its way into the
basement of the building. Do not store cylinders full or
empty inside a building or inside a vehicle. Although it is
unlikely that propane will vent from a stored cylinder, if it
should, the vapor could come in contact with an ignition
source such as a spark from a power tool or other
appliance and create a flash fire.
Do not smoke or use a device with an open flame
when handling or transporting propane cylinders.
TRANSPORTING CYLINDERS
When transporting cylinders to a propane dealer
or to a job, make sure the cylinders are securely fastened
and standing in an upright position with the service valve
closed.
A cylinder rattling around in the back of a vehicle
and banging into other objects constitutes a hazard. Avoid
dropping or banging cylinders against sharp objects.
The propane cylinders are sturdily constructed but
a series of hard jolts could cause damage.
Please note that any cylinder that has been filled
is always considered full, no matter how little propane gas
remains in it. This is because even when all liquid has
evaporated into vapor there is still some propane gas
vapor left in the cylinder. Because this remaining fuel is
flammable, an empty cylinder should be treated with the
same careful procedures as one that is filled to the 80%
level with liquid propane. The only time that a cylinder is
considered empty is when it is new, before it has been
filled with propane.
When transporting a propane powered floor
machine, the propane cylinder may be strapped onto the
machine as long as the machine itself is firmly secured in
the vehicle.
Of course, spare cylinders should always be secured in an
upright position
