7.2
Servicing/inspection
KSB recommends the following schedule for pump set maintenance:
Table 15: Overview of maintenance work
Maintenance interval
Maintenance work
For details see ...
After 4,000 operating hours
7)
Insulation resistance test
Check the power cables
Visually inspect the lifting chain/rope
After 10,000 operating hours
8)
Check the sensors
Check the mechanical seal leakage
Change the lubricant
Lubricate the bearings
Every five years
General overhaul
7.2.1 Inspection work
7.2.1.1 Checking the lifting chain/rope
✓
The pump set has been pulled out of the pump sump and cleaned.
1. Inspect the lifting chain or rope as well as the attachment for any visible damage.
2. Replace any damaged components by original spare parts.
7.2.1.2 Checking the power cables
✓
The pump set has been pulled out of the pump sump and cleaned.
1. Inspect the power cable for any visual damage.
2. Replace any damaged components by original spare parts.
✓
The pump set has been pulled out of the pump sump and cleaned.
1. Measure the resistance between earth conductor and earth.
The resistance measured must be less than 1
Ω.
2. Replace any damaged components by original spare parts.
DANGER
Defective earth conductor
Electric shock!
▷
Never switch on a pump set with a defective earth conductor.
7.2.1.3 Measuring the insulation resistance
Measure the insulation resistance of the motor winding during annual maintenance
work.
✓
The pump set has been disconnected in the control cabinet.
✓
Use an insulation resistance measuring device.
✓
The max. measuring voltage is 1000 V.
1. Measure winding against earth.
To do so, connect all winding ends together.
2. Measure the winding temperature sensor against earth.
To do so, connect all core ends of the winding temperature sensors together and
connect all winding ends to earth.
Visual inspection
Checking the earth
conductor
7)
At least once a year
8)
At least every three years
7 Servicing/Maintenance
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Amarex KRT
Summary of Contents for Amarex KRT
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