STP-iX455/iXL455 Series Instruction Manual
6-1
Operation
6 How to Start/Stop the STP Pump
◇ NEVER connect or disconnect any cables while the power is ON.
◇ NEVER stop the power supply to the STP pump 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.
6.1 Before Starting
After completing installation, piping, leakage test of the STP pump, installation of the
external power supply unit, and wiring of the power cables, the STP pump is ready for
start.
Check the following items before starting:
1) Is the STP pump secured according to the appropriate method?
2) Is the external power supply unit connected correctly to the main power?
3) Are the external power supply unit and STP pump connected with the DC power
cable?
4) Is the power voltage properly?
5) Is each connector securely connected?
Is each terminal and connector securely locked?
6.2 Start Procedures
Start the backing-pump before or simultaneously with start of the STP pump.
Open the vacuum valve located at the outlet port flange side after starting the backing-
pump.
◇ DO NOT open the vacuum valve without operating the backing-pump.
Depending upon the type of the backing-pump, doing so may cause a reverse flow
of oil, which could contaminate the inside of the STP pump.
◇ Avoid frequent start/stop operations as this may cause the STP pump to overheat.
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