Trouble Check Items and Troubleshooting
1. Failure to start, fuse to activate the motor breaker blows
2. Pressure does not reduce
3. Abnormal sound
4. Abnormal heat
5. It takes a long time to exhaust
1. Failure to start, fuse to activate the motor breaker blows
| Trouble Check Items | Solutions. |
|---|---|
| The rotor check ・Are there any deposits on the surface？ ・Is the clearance of each part correct？ |
・Repair ・Readjust and repair the rotor timing |
| ・Is the pressure difference between the inlet port pressure and the outlet port pressure too high？ | ・Check each pressure. |
| Lubricating oil check ・Does the oil reach the level？ ・Is it discolored？ ・Is viscosity increased？ |
・Refill the lubrication oil ・Replace the lubricating oil ・Replace the lubricating oil |
| ・When removing the motor and running the motor only, is the rotation number and current value normal？ | ・Replace the motor and check the power supply |
2. Pressure does not reduce
| Trouble Check Items | Solutions |
|---|---|
| ・Is the performance of the fore pump degraded？ | ・Check the fore pump |
| ・Are there any leaks in the piping？ | ・Check for leakage of piping |
| ・Is the lubricant dirty？ | ・Replace lubricating oil |
| ・Is there any oil leakage from the mechanical seal？ | ・Replace and repair the mechanical seal |
3. Abnormal sound
| Trouble Check Items | Solutions |
|---|---|
| ・Is there a high-frequency metallic sound？ | ・Stop the pump immediately, rerun after a few minutes, repeat this process several times, and replace or repair the mechanical seal if it does not solve the problem. |
| ・Is the lubricant within the reference line？ | ・Refill the lubrication oil |
| ・Does it make a rattling sound, and vibrate occurs in sync with this sound？ | ・Readjust and repair the rotor timing ・Replace and repair the bearing |
| ・Is there a rattling sound？ | ・Replace and repair the timing gear |
4. Abnormal heat
| Trouble Check Items | Solutions |
|---|---|
| ・Is the cooling water flowing？ | ・Check the cooling water level |
| ・Is the pressure difference between the inlet port pressure and the outlet pressure port too high？ | ・Check each pressure |
| ・Is the discharge pressure normal？ | ・Check the fore pump |
| ・Does the rotor turn manually？ | ・Repair |
5. It takes a long time to exhaust
| Trouble Check Items | Solutions |
|---|---|
| ・Is there any dust on the wire net of the inlet port？ | ・Clean the wire net ・Repair |