Kessel Aqualift F XXL 400 litres 50 Hz Series, Инструкции по установке, эксплуатации и техническому обслуживанию

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Regular maintenance
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6.3 Maintenance work
Check current consumption and voltage
The current consumption and voltage at all 3 phases must be checked regularly. These remain constant during
normal operation. Slight deviations depend on the properties of the pumping medium. Damage and/or faulty
functions of the impeller/propeller, bearings and/or motor can be recognised early and eliminated on the basis
of current consumption. Thus more serious subsequent damage can be avoided to a large extent and the risk of
total failure be reduced.
Check the control units used, seal chamber monitoring etc.
Check the control units used for perfect function. Faulty units must be replaced immediately since they do not
guarantee protection for the machine. The specifications related to the testing process must be heeded exactly (if
necessary consult the operating instructions for the respective control units).
Visual inspection of the power supply cables
The power supply cables must be examined for bubbles, cracks, scratches, chafe marks and/or crushing. If
damage is found, the damaged power supply cable must be replaced immediately.
Cables may only be replaced by the manufacturer or an authorised or certified customer service partner. The
machine may only be put back into operation after the damage has been eliminated properly.
Visual inspection of accessories
The correct condition of accessories must be checked. Faulty accessories must be repaired or replaced
immediately.
Visual check of pumps with oil boom chamber
Oil level and oil condition:
The condition of the floating-ring type shaft seal can be checked by a visual inspection of the oil. Place the pump
horizontally so that the oil chamber control screw on the side of the motor casing (on
larger pumps: one of the two oil chamber control screws) is located at the top.
Remove the screw and extract a small amount of oil. If the oil is cloudy or milky, the shaft seal is probably defective.
In this case, have a KESSEL Factory Customer Service or KESSEL AG check the condition of the shaft seals.
Used oil must be disposed of in accordance with valid environmental provisions.
Functional check of the safety and monitoring devices
Monitoring devices are e.g. temperature sensor in the motor, seal chamber check, overvoltage relay etc.
Motor protection, overvoltage relay and other actuators can generally be triggered manually for testing. In order
to test the seal chamber check or temperature sensor, the machine must have cooled down to the ambient
temperature and the electrical connection cable of the monitoring device must be disconnected in the control
cabinet. The monitoring device is then checked using an Ohmmeter. The following values should be measured:
Bimetal sensor: Value equal “0” - passage
Seal chamber check: The value must approach “infinite”. If the value is low, there can be water in the oil. Please
also note the instructions for the optional evaluation relay.
If there are major deviations, please contact the manufacturer.
Changing operating fluid
The drained operating fluid must be checked for soiling and water constituents. If the operating fluid is heavily
soiled and there is a water share of more than 1/3, it must be changed again after 4 weeks. If there is water in
the operating fluid again, a seal is probably defective. Please contact your manufacturer in this case.