STP-H803/H1303 Series Instruction Manual
10.2
Abnormal State of Magnetic Bearing
When the magnetic bearing does not function normally due to a breakage of the
STP connection cable, disconnection of connectors or any abnormality/error of the
STP control circuit, the rotor falls on the touch down bearing and stops.
The "FAILURE" lamp lights and the LCD displays error message
"Disturbance*_*."
◇
When an abnormality/error occurs in the magnetic bearing, check the
STP pump as well as the STP control unit. If "FAILURE" cannot be
released after reset operation, contact Service office.
10.3 Excessive
Vibration
When serious vibration or mechanical shock causes the rotor to touch the touch
down bearing (due to external vibration/impact, intrusion of atmosphere or
foreign materials into the STP pump or rotor imbalance), the STP pump
decelerates and stops.
The "FAILURE" lamp lights and the LCD displays error message
"Disturbance*_*".
Troubleshooting
10.4
Motor Driver Overload
When the STP pump does not attain the rated speed within approx. 30 minutes
after starting or when the ACCELERATION state remains unchanged during
operation for approx. 30 minutes, the STP pump decelerates and stops.
The "FAILURE" lamp lights and the LCD displays error message "DRIVER
Overload".
10.5
Overheating Inside the STP Pump
When the temperature of the motor inside the STP pump overheats due to an
abnormal baking temperature or overload operation, the STP pump decelerates
and stops.
The "FAILURE" lamp lights and the LCD displays error message "MOTOR
Overheat".
10-3
