EBARA EV-S20, Инструкция по эксплуатации, Страница: 91 / 113

P.72
6. Operation
6.1 Before Starting
(1) Turn on the cooling water supply and check that there are no leaks at the pipe
connections.
CAUTION Without sufficient cooling water, the pump temperature will rise
and problems such as rotor contact will occur.
[ NOTE ] The pump unit itself has no cooling water flow adjustment valve.
(2) Turn on the N
2
gas supply. (Only MODEL EV-S**P / MODEL EV-S**N)
Check that the regulator attached to the pump is closed. (It is closed when the
pressure adjustment knob is fully turned in the counterclockwise direction.)
Open the main valve and check that there are no N
2
gas leaks from the pipe
connections.
Slowly turn the pressure adjustment knob clockwise to set the pressure
(gauge pressure) to 0.05 MPa first. Then press the red stopper to lock the
knob in position.
WARNING Be sure to purge with N
2
gas in order to prevent corrosion and
reduce the formation/deposition of reaction by-products in the
pump. When inflammable and/or toxic gases are diluted with N
2
to the safe concentration, be sure to maintain a separate supply
of N
2
gas to the pump exhaust pipe.
CAUTION Abrupt rotation of the pressure adjustment knob will cause the
pressure indicator needle of the regulator to wobble and result in
an inaccurate pressure display.
CAUTION Unless a sufficient supply of N
2
gas is maintained, serious
problems will occur such as pump corrosion and accretion of
reaction by-products.
PM10U
EBARA
CORPORATION