There are two methods of operating the STP pump: MANUAL and
REMOTE.
Select one which fits your vacuum equipment.
7.4
Manual Operation
Slide the "MANUAL/REMOTE" changeover switch on the STP control unit front panel
to the position opposite to "ON." At this time, the "REMOTE" lamp is off.
7.4.1 Pow ering
ON
1)
Switch "ON" the breaker on the rear panel.
(To prevent incorrect operation, a metal fitting is attached to the breaker. Loosen
the screw, lift the metal fitting, and secure it.)
The magnet bearing functions and the rotor levitates (POWER ON state).
The "POWER" lamp lights.
2)
The STP control unit executes the self test. If no error is found, the LCD displays
"LEVITATION."
7.4.2
Starting the STP Pump
1)
Press the "START" switch on the front panel to start and accelerate the STP pump.
The "ACCEL." lamp lights. The LCD displays the current rotational speed in
"ACCEL: ***00rpm" in units of 500 rpm (ACCELERATION state).
2)
When the STP pump attains the rated speed of rotations, the "ACCEL." lamp goes
out, and the "NORMAL" lamp lights. Also, the LCD displays "NORMAL: ***00rpm"
(NORMAL OPERATION state).
◇
The STP pump can be manually started only w hen the LCD displays
"LEVITATION" or "BRAKE: ***00rpm".
In the case of another message displayed, press the "SELECT" sw itch one or
more times until "LEVITATION" or "BRAKE: ***00rpm" is displayed.
◇
Although the STP pump sounds for several seconds w hile it is accelerating, this
is not an indication of abnormality.
7.4.3
Stopping the STP Pump
1)
Press the "STOP" switch on the front panel to stop the STP pump.
The "NORMAL" lamp or "ACCEL." lamp goes out, and the "BRAKE" lamp lights
(BRAKE state).
(The "BRAKE" lamp does not light when the number of rotations is less than 500
rpm.)
2)
The "BRAKE" lamp goes out when the number of rotations goes below 500 rpm.
