Doosan D50S-5 Operation & Maintenance Manual page 86

Difficult to Start Difficult to Start
Operation Section Operation Section
Problem Problem
Will Will Not Not
Continuously Continuously
Fuel container Fuel container almost almost empty
Excess flow Excess flow valve valve closed
Clogged fuel Clogged fuel filter filter
Plugged Plugged fuel fuel line line
Faulty vapor connection between Faulty vapor connection between
the pressure regulator/converter the pressure regulator/converter
and the mixer and the mixer
Pressure Pressure regulator/converter regulator/converter
malfunction malfunction
Fuel Fuel container container almost almost empty
Air Air filter filter clogged clogged
Incorrect air/fuel or ignition control Incorrect air/fuel or ignition control
Engine Mechanical Engine Mechanical
Probab Probable le Cause
Run Run
Fuel Fuel container container almost almost empty
empty LPG Vapor LPG Vapor from
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closed Reset Reset excess excess flow
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Slowly open liquid valve Slowly open liquid valve
Repair/replace Repair/replace as
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Remove Remove obstruction
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Check connection Check connection
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Test pressure regulator/converter operation Test pressure regulator/converter operation
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empty LPG LPG Vapor Vapor from
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Check Check air air filter
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See Advanced Diagnostics See Advanced Diagnostics
See Engine Service Manual See Engine Service Manual
85 85
Cause
empty LPG Vapor LPG Vapor from
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from liquid liquid outlet outlet
Fill fuel container Fill fuel container
Do not exceed 80% of liquid Do not exceed 80% of liquid
capacity capacity
flow valve valve
Close liquid valve Close liquid valve
Wait for a "click" sound Wait for a "click" sound
as required required
See Maintenance Section, LP Fuel See Maintenance Section, LP Fuel
Filter replacement Filter replacement
obstruction from from the the fuel fuel line
Close liquid fuel valve Close liquid fuel valve
Using caution, disconnect the fuel Using caution, disconnect the fuel
line (some propane may escape) line (some propane may escape)
Clear obstruction with compressed Clear obstruction with compressed
air air
Re-connect fuel line Re-connect fuel line
Slowly open liquid fuel valve Slowly open liquid fuel valve
Leak test Leak test
Verify no holes in hose Verify no holes in hose
Clamps must be tight Clamps must be tight
Look for kinked, pinched and/or Look for kinked, pinched and/or
collapsed hose collapsed hose
See Engine Service Manual See Engine Service Manual
from liquid liquid outlet outlet
Fill fuel container Fill fuel container
Do not exceed 80% of liquid Do not exceed 80% of liquid
capacity capacity
filter
Clean/replace as required Clean/replace as required
Corrective Action Corrective Action
from liquid liquid outlet outlet
Fill fuel container Fill fuel container
Do Do not not exceed exceed 80% 80%
line
of of liquid liquid