DAYLIFF SUNVERTER 4, Инструкция по установке и эксплуатации

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3.7 Water Level Switch Installation and Wiring Instruction
Ÿ The water level switch is installed in the well for dry running protection or installed in
the water tank for overflow protection.
Ÿ Water level switch requires vertical installation with maximum 10° inclination
angle. The installation position should be slightly higher than the pump outlet
position in the well, while in the water tank it should be slightly lower than highest
water level.
Ÿ
To wire for well application, pass the water level switch cable through the
waterproof PG terminal and connect to the WELL-COM terminals(remove the
short-circuit strip between the two first), for tank application, connect to the I1
TANK-COM terminals.
Fig 10: Water Level Switch
Installation for Well/Tank Fig 11: Water Level Switch
Wiring Diagram
Calculation
Ÿ Add all A’s = 12Ω -> Lowest Reading = 'Common" winding - C
Ÿ Add all B’s = 19Ω -> Highest Reading = 'Start/Auxiliary" winding - A
Ÿ Add all C’s = 17Ω -> Second Highest Reading = 'Run/Main" winding – M
Connect the motor to the Inverter A, M, C port.
Step 2: Water Flow Test (to confirm the Resistance Test)
If the measured resistance in step 1 appears to have little difference, then compare
water flow during operation to determine if the wiring is correct. Keep C port wiring
unchanged, exchange the wiring of A and M and observe the water flow. The wiring
with bigger water flow should be the correct wiring.
From the above steps, the connection ports A, M,C of single phase motor can be
confirmed