Daily Operation - Hitachi NEXT Series Instruction Manual

3. OPERATING THE DSP [Daily Operation]

3.5 Daily Operation

● When using the DSP air compressor, do not raise the discharge pressure excessively. Operating the
DSP air compressor over the rated pressure can result in main motor overload, shutdown of the
airend and/or damage of parts.
● If the safety relief valve has blown or a protective device has shutdown the DSP air compressor,
investigate the cause of and take corrective action. If there any questions or comments in taking these
actions, please contact the local Hitachi distributor.
3.5.1 Preparing the DSP Air Compressor
③
3.5.2 Starting the DSP Air Compressor
①
DIS. PRESS： １１０ｐｓｉ
INTSTG. P： ２２ｐｓｉ
OIL PRESS： ２２ｐｓｉ
CLT PRESS： ＊＊＊ｐｓｉ
③④
30
CAUTION
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
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
１ ２
ＳＴＲ
UNLOAD STOP
① Turn on the main power supply.
– STOP lamp on the add-on reactor starer panel glows for
reactor starting model.
– Power lamp glows for −△ starting model.
② Check the POWER light and LCD monitor display.
– Is the light lit ?
– Is the monitor screen displayed on the LCD monitor?
③ Check the level of lubricating oil.
– Is the oil level near the red line ?
④ Set the water drainage cock valve of the cooling water
piping and the water drainage cock on the back of the
compressor to "fully closed."
⑤ Allow cooling water to pass through.
IMPORTANT
Make sure the oil level of the lubricating oil is between the
red lines while the compressor is running. Because lubri-
cating oil is circulated through the cooler and the piping
while the compressor is running, the position when the
compressor is running and when it is off differs, and is
higher when the compressor is not running.
① Open the discharge side valve.
② Start operation by pressing the START button.
– START lamp on the add-on reactor starter panel glows for
reactor starting model.
– START lamp glows for −△ starting model.
③ Check the pressure after the compressor starts up.
– The compressor stops running if the oil pressure does not
rise to at least 12 psi.
– The compressor switches to full load operation within 15
seconds for the −△ starting model and within 8 seconds
for the reactor starting model.
④ Make sure the discharge pressure rises gradually.
– Make sure the maximum pressure does not exceed the spec-
ified discharge pressure.