(64)
EBARA
Corporation
Display
Symptom
Check Item
Corrective Action
Coupler is disconnected.
Connect coupler.
Pressure is not sufficient.
Apply sufficient pressure.
Root valve is closed.
Open valve.
Water pipe is clogged.
Clean or replace piping.
Tube fittings are loosened.
Re-tighten.
Instrument failure
Replace instrument.
WARN: WATER
FLOW LOW ##.#
Water flow is reduced.
Outlet & inlet pipes are
reverse. (flow value 0 L/min)
Connect pipes correctly.
N2 port is not connected.
Connect N2 pipe fitting.
Primary pressure is
insufficient.
Apply sufficient pressure.
Regulator setting value
LOW.
Increase pressure setting.
N2 pipe is clogged.
Replace N2 piping.
Leaks on N2 pipe.
Check the fittings.
WARN: PUMP N2
FLOW LOW ##.#
PUMP N2 flow is
reduced.
Instrument failure
Replace instrument.
Cooling water flow is
reduced.
Cool pump thoroughly and
reset.
WARN: MP MOTOR
TEMP HIGH ##.#
WARN: BP MOTOR
TEMP HIGH ##.#
Booster Pump (BP)
motor coil temp.
rises.
Main Pump (MP)
motor coil temp.
rises.
Motor failure
Replace or overhaul pump.
Connection error of the
instrumented units
Check the connection of the
instrumented unit.
WARN: BP
COMM. ERROR
WARN: IO
COMM. ERROR
Communication is not
established.
Instrument failure
Replace instrument.
Duct ventilation insufficient
Ventilate sufficiently.
WARN: BP DRIVER
TEMP HIGH ###
Booster Pump (BP)
driver temp. rises.
Cooling water flow is
reduced.
Increase cooling water flow.
Duct ventilation not
sufficient
Ventilate sufficiently.
WARN: PUMP BOX
TEMP HIGH
Temp. rises in pump
cover.
Cooling water flow is
reduced.
Increase cooling water flow.
Rotor makes contact.
Replace or overhaul pump.
MP performance down
Check exhaust pipe &
silencer.
WARN:BP
CURRENT HIGH
BP current rises.
Instrument failure
Replace instrument.
WARN:
OIL LEVEL LOW
Oil level is low.
Check oil level.
(See Fig.8.1)
Charge lubrication oil.
WARN:PUMP N2
VALVE ERROR
N2 valve open.
Setting is N2 0 mode
Close N2 valve.
(at the side of pump)
After you have taken the remedial actions above, reset the pump. If the problem
that has caused the WARNING signal still remains, the WARNING display will
appear again even after you have reset.