EBARA ESA70W Instruction Manual page 57

(44)
(7) When the ALARM/WARNING display appears on the LCD controller or when
any abnormal symptoms are found other than the display, take action in
accordance with 10. "Troubleshooting."
Even when the cause of the ALARM/WARNING display has been removed,
it is maintained until the RESET signal is entered. Either press the RESET
button or enter an external RESET signal from the control signal connector.
In the BUZZER Enabled mode using DIP switches, it is possible to stop the
buzzer by pressing the BZ.OFF button when the alarm is being generated.
(8) When the pump exhaust pipe is equipped with a valve, open this valve
before starting the pump.
Problems will occur when the pump is operated with the valve closed as the
CAUTION
exhaust pipe will be pressurized.
(9) Checking the sense of pump motor rotation.
Look through the sight glass for monitoring the rotation of the pump motor to
check the direction of rotation. The sense of rotation is correct when the motor
rotates in the direction of arrow(counterclockwise direction as seen from the
motor side). When the motor rotates in the reverse direction, please check the
power supply wiring.
When the pump has a vacuum gauge on the suction side, you can also check
the sense of motor rotation from this gauge. If the motor rotates in the correct
direction, the pressure will drop while the pump is being operated.
(10) Check for correct pump operation by turning the start switch on and off a few
times.
To check the direction of motor rotation, allow pump to run for about 1 second.
CAUTION
EBARA
Corporation