Motor Monitoring / Motor Protection; Maintenance And Repair; Fault Finding Chart - Homa HRS 08 Installation And Operation Instruction Manual

If the safety function has been activated, the mixer can
be started again after the reason for the interruption has
been eliminated. This may be due to e.g. too low current,
blocking of the propeller or overheating of the motor.
The cooling of an overheated motor may take up to one
full hour.
In case of repair works this is to be carried out only in a
specialized work shop.
In case of repair work only original spare parts as indi-
cated in the list of spare parts are to be used.
All inquiries or orders for spare parts must include the
number of the machine! If the specification plate con-
tains a serial number (that only gives details of its elec-
trical layout), the data stamped into the motor casing
must also be supplied.

11. Fault Finding Chart

Before maintenance or repair disconnect the mixer
from the power supply to avoid accidental starting of the
mixer!
1. Operating voltage is not available or is inadeqate
- Check the electrical installation
- Call in the electrician
2. Motorcable is faulty
- Manufacturer must be contacted.
3. Faulty control panel
- Manufacturer must be contacted.
4. Mixer blades cannot rotate
- The mixer must be switched offand secured against
further use
- Clean the blades and manually check rotation.
5. The stator windings are faulty
- Manufacturer must be contacted.
6. Faulty automatic system equipment
- Manufacturer must be contacted.
7. Different phase voltages
- Manufacturer must be contacted.
8. Motor contactor is set too low or is faulty
-Check the thermal relay; adjust the motor cotactor to
rated current.
9. Leakage monitor is switching the mixer off
- Leakage monitoring only when the mixer is submerged
- Manufacturer must be contacted.
10. Mixer blades rotate in the wrong direction
-Transponse two phases of the main supply.
11. Mixer runs on two phases
-Replace faulty fuses.
-Check the supply connections.
12. Internal parts are excessively worn
- Manufacturer must be contacted.
13. Propeller blades are dirty or damaged
-The mixer must be switched off and secured against
further use.
- Clean the blades and inspect for any wear.
- Manufacturer must be contacted.
14. Faulty motor roller bearings.
- Manufacturer must be contacted.
15. Oscillations caused by the installation (resonance)
- Manufacturer must be contacted.
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