7.2 Maintenance work
All power supplies must be disconnected !
7.2.1 Collecting tank
Open the inspection cover and flush the tank by means of using a hose in order to loosen dirt deposits
on the tank walls.
7.2.2 Check valve
Open the inspection cover and clean the interior of the check valve.
7.2.3 Miscellaneous
All further maintenance works must be carried out by qualified service personnel.
8. MALFUNCTIONS, CAUSES AND TROUBLESHOOTING
All power supplies must be disconnected !
To dismount the motor unit from the tank, the 4 hexagon screws (Item 16 of the
spare parts list) must not be loosened, because otherwise the mechanical seal
is destroyed, oil escapes and the warranty will become void! If only the motor
unit shall be dismounted, all 4 screws (Item 13 of the spare parts list) have to be
loosened. If the complete pump shall be dismounted from the tank, all 4 nuts (item
23 of the spare parts list) must be loosened.
Malfunction
1. Motor does not
rotate
Cause
- Too low voltage, voltage missing
- Incorrect power connection
- Power cable defective
- Impeller blocked
- Motor protection switched off due to
overheating, blockage, voltage error
- Controlling error
- Motor defective
Troubleshooting
- Check voltage supply
- Correction
- Replacement / customer service
- Clean
- Check / customer service
- Check / customer service
- Replacement / customer service
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