Hitachi NEXT Series Instruction Manual page 52

6. STARTUP OPERATION [Startup Operation of the Air Compressor]
6.1.2 Starting
③④
DIS. PRESS： １００ｐｓｉ
INTSTG. P： ２２ｐｓｉ
OIL PRESS： ２２ｐｓｉ
CLT PRESS： ＊＊ｐｓｉ
① Fully open the discharge stop valve, and press the
START button.
6.1.3 During Operation
AUTO
MONITOR
MENU
+/-
UP/
DOWN
SET
MONITOR
① Grease the main motor bearing at once. Refer to the
9.4 13 for the detail.
50
運転管理 運転状況
RUNNING CONTROL RUNNING MODE
遠 方
警 報
電 源
REMOTE
POWER
ALARM
負 荷
LOAD
機 能 リセット
起動待ち
RESET 故 障 AUTO START
FUNC
SHUTDOWN
表示切替／
遠 方 運 転 停 止
ワイドモード
REMOTE SELECT/WIDE START STOP
記 憶
1 2
STR
UNLOAD STOP
②
①
[Rear View]
RUNNING CONTROL RUNNING MODE
REMOTE
POWER
ALARM
LOAD
［× 10h］
RESET
AUTO START
FUNC
SHUTDOWN
REMOTE SELECT/WIDE START STOP
2
STR 1
UNLOAD STOP
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.
( 3.7.2)
④ In the case of the fixed speed type, switch to full load
operation within 15 seconds, and for the V type,
switch in approx. 10 seconds.
⑤ Raise the pressure step by step as illustrated below.
Pressure Raising Pattern
100
for the rated
90
discharge pressure
102 psi (0.70MPa)
75
Method of Raising Pattern:
60
During startup operation, raise the discharge pressure by
following these steps. 1.) After starting the air compressor,
45
operate at 30psi (0.20MPa) for 30 minutes with the discharge
stop valve completely open. 2.) Raise the pressure 15 psi
30
(0.1MPa) (close the discharge stop valve) every 15 minutes
until the pressure reaches the rated pressure. During the
15
startup operation, perform this method without any failures.
0
0.5hr 1hr
Time
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
table below.
③ Verify that the condensate is discharged intermediately
from the intercooler/aftercooler drain port.
CAUTION
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.
( 9.4 13 )
WARNING
During inspection of the operation of the air
relief valve, use the appropriate facial
protection. High pressure air containing dust
particles can cause severe injury.
1.5hrs 2hrs