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STP-H600/H1000 Series Instruction Manual
15 Troubleshooting
If an abnormality/error is found when using the STP pump, check it and take measures in
accordance with the following procedures.
If you cannot trace it or if the STP pump does not function normally after troubleshooting,
fill in the necessary information in the "STP PUMP PROBLEM CHECK SHEET" and fax
it to Seiko Seiki.
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After making sure that the STP pump stops thoroughly, and always turn OFF
the primary power (Switch the breaker "OFF"), check probable causes and
remove them.
15.1 Troubleshooting Immediately After An Abnormality/Error Occurs
1) In case the “FAILURE” lamp lights due to an overload of the inverter (the STP
pump continues rotating by inertia: FREE RUN state):
<MANUAL OPERATION>
i. Press the “MOTOR STOP” switch. The "FAILURE" lamp goes out and the FREE
RUN state is reset.
ii. Press the “MOTOR START” switch and press the "MOTOR STOP" switch again.
The brake functions and the STP pump decelerates.
iii. After the STP pump stops thoroughly (the "BRAKE" lamp goes out: the needle of the
tachometer is in the red), turn OFF the "POWER ON/OFF" switch, switch the
breaker "OFF," and remove probable causes of the abnormality/error.
iv. Restart the STP pump and check if it operates correctly.
< REMOTE OPERATION>
i. Slide the "MANUAL/REMOTE" changeover switch on the rear panel to "MANUAL."
ii. Press the "MOTOR STOP" switch. The "FAILURE" lamp goes out and the FREE
RUN state is reset.
iii. Press the "MOTOR START" switch and press the "MOTOR STOP" switch again.
The brake functions and the STP pump decelerates.
iv. After the STP pump stops thoroughly (the "BRAKE" lamp goes out: the needle of the
tachometer is in the red), switch the breaker "OFF," and remove probable causes of
the abnormality/error.
v. Restart the STP pump and check if it operates correctly.
15-1