Xylem LOWARA TVS Série Instructions De Montage, De Service Et De Maintenance page 40

Installation, Operating and Maintenance Instruction
Meaning of code number for cause and method of repair
1. Motor protection switch is wrongly set
• Check setting or replace the motor protection switch
2. Phase failure
• replace defective safety fuses
• Check pipes for damage
3. Wrong frequencies or under voltage
• Compare voltage and frequency with data on the rating plate
4. Rotates in the wrong direction
• Swap over phases of power supply
5. Motor winding or electrical cable defective
• Ask for assistance
6. Motor gets caught at the star delta at the star stage
• Replace star delta converter
7. Voltage loss due to burned out safety fuse
• Replace safety fuse
8. Voltage loss due to defective feeding cables
• Renew cables
9. Voltage loss due to motor protection switch being released
• Establish the causes
• Reset the motor protection switch
10. Pump is blocked due to impurities
• Dismantle and clean the pump part
11. Pump does not reach the handled liquid due to it not being installed deeply enough
• Check the water level
• Hang the unit deeper
12. Defective coupling
• Replace shaft and coupling
13. Gate valve closed
• open
14. Suction filter displaced by foreign bodies
• Take out pump and clean the suction filter
15. uninspected, wrong direction of rotation
• change direction of rotation
16. Gate valve not quite open
• open
17. Pipes constricted by foreign bodies
• clean pipes
18. Well filter blocked
• Consult well sinker company
19. Leakage in the delivery pipe
• Check pipes
20. Impellers worn because liquid handled is aggressive or contains sand
• Dismantle unit and replace the impellers (be careful when selecting material)
21. Impellers worn due to cavitation
• Check operating conditions
22. too little speed due to under voltage or wrong frequencies
• Check mains voltage and mains frequency
23. too little speed because running in 2 phases
• check electrical branch circuit connections and safety fuses
24. Flow rate too high or too low
• Adjust valve
page 34
Model TVS