Working With Lpg Equipment - Daewoo G420E Service Manual

WORKING WITH LPG
EQUIPMENT
WARNING
Propane Vapor is heavier than air and can collect in
low areas when adequate ventilation or air movement
is not present to disperse it. Never check for leaks
with a flame or match. Use a leak detector solution or
an electronic detector. Make sure the container
service valve is closed when connecting or
disconnecting. If the container service valve does not
operate properly, discontinue use and contact your
propane supplier. Never insert any object into the
pressure relief valve.
WARNING
LP gas is highly flammable. To prevent personal injury,
keep fire and flammable materials away from the lift
truck when work is done on the fuel system.
Gas vapor may reduce oxygen available for breathing,
cause headache, nausea, dizziness and
unconsciousness and lead to injury or death. Always
operate the forklift in a well ventilated area
Liquid propane may cause freezing of tissue or
frostbite. Avoid direct contact with skin or tissue;
always wear appropriate safety protection including
gloves and safety glasses when working with liquid
propane.
CAUTION
The regulator/converter and mixer are part of a
certified system complying with EPA and CARB 2004
requirements. Only trained certified technicians
should perform disassemble, service or replacement
of the regulator/converter or mixer.
CAUTION
LPG fueled machinery may be garaged anywhere
gasoline powered vehicles are garaged. When
machines are stored for a long period, it is advisable
to shut off the tank supply valve and run the machine
until the fuel trapped down stream of the valve is
depleted.
Tier
G420E/G424E LP Engine
NOTE
NFPA (National Fire Protection Agency) 58 covers the
procedures for storage and garaging for repair
purposes, on propane powered equipment.
CAUTION
Safety is an important consideration for any repair
facility, and repairing LPG fueled machinery is no
exception. Refer to the NFPA (National Fire
Protection Agency) for the appropriate fire
extinguisher specifications and fluorescent lighting
requirements.
Propane has a heavier than air vapor density and will
fall if a leak occurs, while natural gas, by comparison,
will rise in the event of a leak (Figure 1).
This is an important property that technicians need to
be aware of when performing maintenance. When
repairing propane machinery, the work should be
performed in the lowest point of the facility where
possible. The tank supply should be shut off, except
when required for running equipment.
Diesel
Figure 1
7
CNG
LPG

Working with LPG Equipment