6. STARTUP OPERATION [Startup Operation of the Air Compressor]
DIS. PRESS： １００ｐｓｉ
INTSTG. P： ２２ｐｓｉ
OIL PRESS： ２２ｐｓｉ
CLT PRESS： ＊＊ｐｓｉ
① Fully open the discharge stop valve, and press the
6.1.3 During Operating
① Grease the main motor bearing at once. Refer to the
9 Maintenance 13 for the detail.
② Verify that the air compressor has proper rotation.
If rotation is not correct (phase reversal), change 2 of
the 3 wires of the power cable.
③ Verify that the oil pressure rises 18 psi (0.12 MPa) or
greater within ten (10) seconds after starting the air
compressor. If pressure has failed to rise, press the
STOP button and clean the oil strainer. And/or
regulate the oil pressure by oil relief valve. (
④ In the case of the fixed speed type, switch to full load
operation within 20 seconds, and for the V type,
switch in approx. 10 seconds.
⑤ Raise the pressure step by step as illustrated below.
Pressure Raising Pattern
for the rated
100 psi (0.69 MPa)
Method of Raising Pattern:
During startup operation, raise the discharge pressure by
following these steps. 1.) After starting the air compressor,
operate at 29psi (0.20MPa) for 30 minutes with the discharge
stop valve completely open. 2.) Raise the pressure 14 psi
(0.1MPa) (close the discharge stop valve) every 15 minutes
until the pressure reaches the rated pressure. During the
startup operation, perform this method without any failures.
② Check the LCD for operating pressures and
temperatures. Verify that: Discharge air pressure
(DIS. PRESS), interstage air pressure (INTSTG. P),
oil pressure (OIL PRES), 1st stage discharge air
temperature (DIS. TEMP 1), 2nd stage discharge air
temperature (DIS. TEMP 2), 2nd stage suction
temperature (2ND SUC. T.) and oil temperature (OIL
TEMP) are within the normal range, as shown in the
Proper Pressure/ Temperature Indications on LCD
③ Verify that the condensate is discharged intermediately
from the intercooler/aftercooler drain port.
Ensure that the main motor is properly greased
during the start up commissioning. If the air
compressor has not been operated for (3)
months, grease before restarting. (
During inspection of the operation of the air
relief valve, use the appropriate facial protec-
tion. High pressure air containing dust particles
can cause severe injury.
9.4 14 )