KSB 88980/02, Operating And Maintenance Instructions Manual

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7.2 Maintenance/Inspection
Table 15: Overview of maintenance work
Maintenance interval Maintenance work For details see ...
After 4,000 operating hours 7) Insulation resistance test (
⇨
Section 7.2.1.3 Page 38)
Check the power cables (
⇨
Section 7.2.1.2 Page 38)
Visually inspect the lifting chain/rope (
⇨
Section 7.2.1.1 Page 38)
Check the sensors
Change the lubricant
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 supply cables
✓
The pump set has been pulled out of the pump sump and cleaned.
1. Inspect the power supply cables 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 conductor ends of the winding temperature sensors
together and connect all winding ends to earth.
⇨
The insulation resistance of the conductor ends against earth must not be lower
than 1 M
Ω.
If the resistance measured is lower, power cable and motor resistance must be
measured separately. Disconnect the power cable from the motor for this
purpose.
Visual inspection
Checking the earth
conductor
7)
At least once a year
7 Servicing/Maintenance
38 of 66 Amarex® N
Goodnal STP ST041 Biological Treatment (KSB WAS PUMP 1 & 2 PU-0530-010 OM Instructions) Vendor Manual
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