ABB Power2 550-M44 Operation Manual page 51

Operation Manual / Power2 550-M / High-pressure stage
5 Monitoring during operation / 5.3 Speeds
5.3.4 Replacing the speed sensor
WARNING
Hot cable connector and hot speed sensor
Danger of burns. The cable connector and speed sensor can reach temperat-
ures in excess of 100 °C during operation.
When disassembling the cable connector and speed sensor, wear safety
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gloves.
Wear safety gloves to protect against thermal hazards.
Reduce the engine performance to idling and then stop the engine. Observe post-lubrica-
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tion time (see section Stopping the engine).
Switch off the lubricating oil supply to the low or high-pressure stage.
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Disconnect the cable connector from the speed sensor.
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Unscrew the defective speed sensor.
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Screw in new speed sensor to the stop.
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For the tightening torque of the low-pressure stage speed sensor, see document
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Operation Manual / Power2 ... / Low-pressure stage / Disassembly and assembly / Table
of tightening torques.
For the tightening torque of the high-pressure stage speed sensor, see document
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Operation Manual / Power2 ... / High-pressure stage / Disassembly and assembly / Table
of tightening torques.
The speed sensor supplied by Turbo Systems is equipped with a sealing lip and an O-ring. No
additional gasket is required during assembly.
Connect the cable connector with the speed sensor.
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Switch on lubricating oil supply to the low-pressure or high-pressure stage.
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5.3.5 Malfunction of the speed measurement system
The possible reasons for malfunction of the speed measuring system are described in
chapter Troubleshooting /
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Speed measurement system
HZTL4058_EN
→74.
Rev.F March 2022