Startup Operation 6.1 Air Compressor - Hitachi NEXT Series Instruction Manual

6. STARTUP OPERATION
Follow the instructions in this chapter, also when you restart the DSP after a long-term suspension.
6.1 Air Compressor
● Before you connect the power, verify that the DSP is correctly installed, piped, and wired.
● Check the power supply, and verify that it is firmly grounded and that the voltage is within an allow-
able range (–5% to +10%).
6.1.1 Preparing the Air Compressor
③
6.1.2 Starting the DSP Air Compressor
①
DIS. PRESS： １１０ｐｓｉ
INTSTG. P： ２２ｐｓｉ
OIL PRESS： ２２ｐｓｉ
CLT PRESS： ＊＊＊ｐｓｉ
③④
CAUTION
Raise the pressure as illustrated in the
Pressure Raising Pattern (see illustration to
the right). If this pattern is not followed, the
airendmay seize.
44
CAUTION
②
運転管理 運転状況
ＲＵＮＮＩＮＧ ＣＯＮＴＲＯＬ ＲＵＮＮＩＮＧ ＭＯＤＥ
警 報 遠 方
ＲＥＭＯＴＥ 電 源
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
２
ＳＴＲ １
UNLOAD STOP
②
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
ＳＴＲ １ ２
UNLOAD STOP
① Fill the oil through the oil filling port until the oil
reaches the upper red line of the oil level gauge. Use
the Hitachi recommended oils (
② Fully close the water drain valve and start to flow the
cooling water.
③ Make sure that the cooling water flow rate is normal.
④ Connect the power, and verify that the POWER light
is ON.
– STOP lamp on the add-on reactor starter panel glows for
reactor starting madel.
⑤ Change 2 of 3 wires of the power cord if the display
shows CABLE CONNECTED: REV ersal PHASE.
WARNING
Hitachi has NOT filled the oil into the DSP.
Before a startup operation fill any Hitachi
recommended oils (
If you operate the DSP without filling the oil, the
air end may be failed or burnt.
① Fully open the discharge stop valve, and press the
START button.
② Verify that the DSP rotates in a proper direction.
Change 2 of 3 wires of the power cord if the DSP
rotates improperly (or is in a reversal phase connec-
tion).
③ Oil pressure rises to 0.12 MPa (7 psi) or more approx. 10
seconds after starting operation. If it has failed to rise,
press the STOP button, and clean the oil strainer.
④ The compressor switches to full load operation within
15 seconds for the
−△ starting model and within
10 seconds for the reactor starting model.
⑤ Raise the pressure step by step as illustrated below.
105 Pressure Raising Pattern
for the specified discharge
90
pressure 110 psi
75
60
65
30
15
0
0.5 1.0
Operationg Hours
p. 7).
p.7).
Method of Raising the Pressure
During a startup operation, raise the discharge
pressure step by step. For 30 minutes after
starting, operate the DSP at 15 psi with the
discharge stop valve fully opened. Then raise
the pressure (close the discharge stop valve)
by 100 psi every 15 minutes until the pressure
reaches the specified 110 psi.
For the DSP startup operation, observe the
method without fail.
1.5 2.0