AirMan PDS185S-6E1, Руководство по обслуживанию

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4. Troubleshooting
4-6
4.2.5 Minimum speed not available even upon no-load operation
※
For the detailed countermeasures, refer to “Service manual” published by engine manufacturer.
4.2.6 Safety valve bursts out during unloaded operation
Check if engine controller
(ECU) functions well
Faulty engine controller
(ECU) or faulty wire
connection
Replace engine controller
(ECU) or repair wire
connection
Check emergency
controller output voltage
(DCV)
Abnormality engine
Repair the trouble and get
rid of the cause
Normal
Faulty
Check pressure sensor
output voltage (DCV)
Faulty pressure sensor
Approx.
more than 0.7V
Replace it
Normal
Approx. 1.1V
Input wire connection or
emergency controller fails
Approx.
less than 1.1V
Normal
Approx. 0.7V
B
C
D
※
Check whether it is
possible to adjust it by
correcting no load
revolutions
Faulty adjustment Re-adjust
Adjustment
Faulty adjustment
It bursts at less
pressure
Faulty adjustment of
pressure
Re-adjust pressure
Adjustment
Change pressure gauge for
replacement one, and
re-adjust pressure gauge
Faulty adjustment
Adjustment
Replace assembly
Faulty adjustment
Faulty safety valve
It bursts at
excessive pressure
Replace it
Faulty diaphragm of
pressure regulator
Air leak
No air leak
E
Replace diaphragm
Check pipe to pressure
regulator for leak
Faulty pipes
Replace parts
Air leak
No air leak
Check adjustment of
pressure regulator
Check and confirm that
safety valve functions at
lower pressure than set
pressure
Faulty pressure gauge
Bleed pressure regulator
and check for air leak
Check orifice at second
stage of pressure regulator
Disassemble / clean or
replace parts
Orifice clogging
Clogging
No clogging
Repair input wire
connection or replace
emergency controller
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