SQFlex Service Instructions

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4.4.1 Trouble-shooting of a wind-powered system
All measuring points/terminal designations in the following refer to the IO 102 breaker box.
1. Disconnect the pump
• Stop the wind turbine and turn off the pump, by turning the ON/OFF switch to off.
• Disconnect the pump cable from the terminals in the IO 102 breaker box.
• Release the wind turbine by turning the ON/OFF switch to on.
2. Check the wind turbine
• Measure the AC voltage across the terminals for the wind turbine, i.e. one measurement between
each of the three phases.
The voltage (U) = 0-250 VAC. The voltage depends on the wind speed, see Wind turbine on page
18.
The three values measured must be identical. If they differ, or if no voltage is measured and the pro-
peller is turning, the wind turbine is faulty. Repair or replace the wind turbine.
3. Check the IO 102 breaker box
• Measure the DC voltage across the terminals for the pump.
The voltage (U) = 0-300 VDC. The voltage depends on the wind speed, see Wind turbine on page
18.
If no voltage is measured and the Propeller is turning, the breaker box is faulty. Replace the breaker
box.
4. Check the pump
• Stop the wind turbine by turning the ON/OFF switch to off.
• Reconnect the pump cable to the terminals.
• Release the wind turbine and turn on the pump, by turning the ON/OFF switch to on.
Note that the dry running sensor is covered with water.
If the pump starts, it was stopped due to dry running and has now been reset.
• Wait five minutes.
If the pump does not start, it is defective. Repair or replace the pump.
sqflex_SI_US_WG.book Page 34 Thursday, October 1, 2009 3:27 PM