8 Servicing/Maintenance
49 of 104
mini-Compacta
2317.886/16-EN
8.2 Maintenance schedule
Table 28:
Overview of maintenance work to EN 12 056-4
Place of use
Maintenance interval
Servicing/maintenance work
Commercial operation
At least every three months
▪
Check the inside of the collecting tank and the
float switch for any deposits. If necessary, clean
these areas.
▪
Measure the insulation resistance of the motor.
(
Multiple dwelling buildings At least every six months
Single-family houses
At least once a year
8.2.1 Inspection contract
For inspection work and servicing work we recommend the KSB inspection contract.
Contact your service partner for details.
8.2.2 Measuring the insulation resistance
Measure the insulation resistance of the motor when servicing the sewage lifting
unit.
ü
The maintenance intervals have been observed. (
1. Measure the insulation resistance at the cable ends with an insulation resistance
measuring device. The insulation resistance must be ≥ 2 MΩ.
ð
Measuring voltage at 3~ 400 V AC: 1000 V DC
ð
Measuring voltage at 1~ 230 V AC: 500 V DC
ð
If the values are too low, have the motor overhauled by KSB Service.
8.2.3 Unblocking the cutter
mini-Compacta US, UZS
If the water level in the tank rises and the alert is triggered without the pump
starting up, the cutter may be blocked.
To unblock the cutter:
1. Interrupt the power supply. (
2. Remove screw plug 903.01 at the motor housing. Use a socket wrench (WAF 8)
on the hexagon of the shaft end to turn the rotor to and fro until it turns freely
again.
3. Fit screw plug 903.01 with joint ring 411.01 again.
4. Perform the start-up procedure. (
NOTE
If the blocked pump has been tripped by the thermal motor protection, it will be
operational again after approx. 15 minutes.
8.2.4 Oil check/Oil change
mini-Compacta US100, UZS150 & Ausführung C
1. Remove the rotating assembly. (
2. Position the rotating assembly as shown.
