5 How to Start/Stop the STP Pump
CAUTION 
◇NEVER connect or disconnect any cables while the power is ON.
◇NEVER turn the primary power OFF (switch the breaker "OFF") while the STP pump is in rotation.
◇DO NOT release the inlet port flange or outlet port flange into the atmosphere while the STP pump is in rotation.
5.1Before Starting
After completing installation, piping, leakage test of the STP pump and installation of the STP control unit, the STP pump is ready for start.
Check the following items before starting:
1)Are the STP pump and the STP control unit secured according to the appropriate method?
2)Is the primary power cable connected correctly to the power supply?
3)Is the power voltage selected properly?
4)Do the manufacturing No. and the cable length of the STP pump, the STP control unit and the STP connection cable match?
5)Are the labels affixed correctly to the STP connection cable and the motor connection
cable?
6)Are the ground cable, the STP connection cable, the motor connection cable, and the emergency vent. valve cable securely connected?
Is the connection cable securely connected?
Are each terminal and each connector securely locked?
5.2Starting/Stopping Time
Starting time: Approx. 6 minutes after start operation.
Stopping time: Approx. 6 minutes after stop operation.
If the rotational speed does not attain the rated speed within about 15 minutes, the "FAILURE" lamp lights. Before restarting the STP pump, always check whether or not there is leakage from the piping or the vacuum equipment and also confirm the capacity and the START state of the auxiliary pump.
NOTICE
◇When start/stop operations are frequently performed, the STP pump may overheat. Avoid doing so.
