Propane Safety Information - Diamatic 08013A, 08014A Libro De Instrucciones

Propane Safety Information

Facts About LP Gas - Propane
As a fuel, Propane gas is unmatched for both safety and
dependability. It has been used as a domestic household
fuel for over half a century, and for over thirty years as
an internal combustion engine fuel. Propane is a highly
fl ammable fuel that is contained under pressure as a liquid.
Vaporized gas has a similar explosive force to gasoline
and mixtures as low as 2% LP Gas to air may be ignited in
a closed environment. Care should be exercised to avoid
escaping vapor as it can freeze skin and cause frost bite.
Vaporized fuel is heavier than air and will collect in the
lowest confi ned space available.
Facts About Propane Tanks
Propane tanks are constructed according to ASME or
Federal DOT #4ET20 pressure safety codes. Including the
tank, all valves and fi ttings are UL Listed. Propane gas is
noncorrosive and will not rust the inside of a tank. Should
the tank exterior become damaged or rusted, discontinue
use. DO NOT tamper with tank gauges or safety relief
valves. NEVER use a tank not intended for use with a
propane buffer. DO NOT substitute tanks that are used
with a barbecue grill, etc. We recommend having propane
tanks tested once a year by an authorized National LP Gas
Association sanctioned propane dealer.
The fuel tank is supplied directly from the manufacturer
and is void of fuel. This tank must be purged at the time of
the fi rst fi ll. Local fuel vendors should be familiar with this
operation and will provide this service.
Recommended Purge Procedures
How to purge new LP-Gas Buffer cylinders equipped with
the Overfi ll Prevention Device:
New containers may contain vapor, air, or other
contaminants. It is essential that these be removed before
fi lling the container and placing it into service. Air in the
container will cause abnormally high pressure, with the
result that the pressure relief valve may open. Air in the
system is also likely to cause lean mixture, making
ignition diffi cult. If a cylinder is suspected of being
depressurized or open to the atmosphere for a period of
time, it must be re-purged as if it were a new container.
To purge a container, the following steps should be
taken.
Purging of containers should be performed in an approved
area (see NFPA #5 8) using NPGA #13 3.89(a) procedure.
1. Determine if the container pressure is zero. Should the
cylinder contain only pressurized air, the air may be vented
directly to the atmosphere through the service valve using
an adapter and the outage valve.
2. Pressurize the container to approximately 15 psig with LP-
gas vapor. Never purge with liquid LP-gas!
will cause the moisture vapor to chill and remain in the
cylinder. LPgas liquid also expands 270 times to vapor
making the purge process ineffective. Use LP-gas
vapor only!
BLASTRAC Operator's Manual (EN) - Concrete Polisher
3. Make the connection to the quick coupler (A purge
manifold system is most effective). Fully open the cylinder
service valve as well as the outage valve. Vent to a safe
atmosphere. A vent stack is recommended.
4. On Overfi ll Prevention Device cylinders, the purge time is
increased as a result of the new valve design. Opening
the outage valve will help improve the speed of the purge.
5. Repeat #3 and #4 for a total of FIVE purges.
6. Repressurize the container with odorized LP-gas vapor to
15 psig.
7. The container is now ready to be fi lled with LP-gas.
8. Once fi lled, check all fi ttings and tank openings for leaks
using an approved leak detector solution.
9. The container is now ready to be placed in service. Add
DOT and OSHA labels.
Symptoms of a non-purge cylinder:
• Relief valve opens due to over pressurized
cylinder creating hazardous situation.
• Moisture in the cylinder.
• Buffer operates initially but shuts down when
fuel mixture becomes too lean.
Refi lling & Storing Propane Tanks
The NFPA Technical Committee prohibits the storage of
such containers in buildings. There are few exceptions
to this rule. In other words, propane tanks should NOT
be stored in buildings used by the public or frequented
by anyone passing through or who is working in the
building. Full or empty, never leave tanks in small enclosed
areas. The tank(s) must be in a secure, tamper-proof
storage enclosure that provides safety from accident
or vandalism. PROPANE TANKS SHOULD ALWAYS
BE TRANSPORTED, INSTALLED AND USED IN AN
UPRIGHT POSITION.
OVERFILLING PROPANE TANKS IS HAZARDOUS.
The tank should NEVER be completely fi lled with liquid
propane. 80% of the total tank volume is to be considered
at ALL times as full. EXPANSION MUST BE ALLOWED
FOR. Propane Buffer tanks are equipped with a fi xed
liquid level gauge which contacts the liquid level at 80% of
container capacity, allowing 20% for expansion. The top
part of this device must be unscrewed counterclockwise so
that vapor can escape through the small hole it its side, as
the tank is refi lled. When the escaping vapor starts to give
way to liquid, the device must be quickly closed and the
propane nozzle turned off.
**IMPORTANT** The engine and the fuel system on
your fl oor care machine are designed to run on fuel
vapor, not fuel liquid. Overfi lling the propane tank will
To do so result in damaging the lockoff and/or regulator. This
will VOID the WARRANTY on these components.
ENGLISH
EN
FORM NO. 71511A - 13 -