6. Maintenance/Adjustment
6
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3
6.2 Troubleshooting
Should any trouble occur during operation, do not leave it. Investigate the cause and take appro-
priate measures.
Read the manual carefully and fully understand what to do in case of trouble.
The better you understand the construction and function of the unit, the faster you can find a prob-
lem and solution.
This chapter describes the state, cause and countermeasures of important troubles in detail:
Symptom Cause
Countermeasures
Low starter
revolution speed.
(1) Battery malfunction.
Check battery
→
Charge, change
Starter rotates but engine
does not start.
(1) Fuel filter clogging.
(2) Malfunction of fuel cut sole-
noid.
Disassemble, clean, and
change
Check fuse
Discharge air pressure will
not rise.
(1) Pressure regulator insufficient
adjustment.
(2) Starting unloader valve is left
at its start position.
(3) Manually operated relief valve
is kept open.
Re-adjust (Fasten)
Place it at “RUN” position
Check/ Re-adjust
Engine does not reach its
maximum speed.
(1) Improper length in speed
regulator rod.
(2) Faulty speed regulator.
(3) Fuel filter clogging.
(4) Engine trouble.
(5) Unloader orifice clogging.
Re-adjust
(
longer length
)
Disassemble/Check
Disassemble/Change
Call your nearest dealer
Disassemble/Clean
While the discharge pressure
will not rise up to the speci-
fied one, RPM will drop.
(1) Pressure regulator insufficient
adjustment.
(2) Trouble of pressure regulator.
Re-adjust (Fasten)
Change
Engine does not reach mini-
mum revolution at
unload.
(1) Improper length in speed
regulator rod.
(2) Faulty speed regulator.
Re-adjust( Shorter length
makes the speed drop/longer
length makes it rise.)
Disassemble/Check
Safety valve
relieves at unload.
(1) Pressure regulator insufficient
adjustment.
(2) Unloader regulator insufficient
adjustment.
(3) Unloader valve damaged and
seat malfunction.
(4) Faulty safety valve.
Re-adjust(loosen)
Re-adjust
Change
Change
Oil mixes in Air.
(Poor oil separation)
(1) Scavenging orifice strainer
clogging.
(2) Low discharge pressure.
(3) Oil separator deteriorated.
Disassemble/Clean
Disassemble/pressure
control valve/check
Change
Insufficient free air delivery.
(1) Air filter element clogging.
(2) Unloader valve cannot fully
open.
(3) Engine does not reach rated
speed.
Clean element or change
Call your nearest dealer
Summary of Contents for PDSE900S-4B1
Page 1: ......
Page 60: ...8 Specifications 8 2 8 2 Outline drawing A040390 1 A070197...
Page 61: ...9 Wiring Diagram 9 1 A090360E...
Page 62: ...10 Piping Diagram 10 1 10 1 Compression air Compressor oil PDSE900S PDSF830S 4B1 A070141E 2...
Page 63: ...10 Piping Diagram 10 2 PDSG750S 4B1 A070220E 2...
Page 67: ......