Crane BARNES 10XSHD, Инструкция по установке и эксплуатации

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18
WIRING DIAGRAM
FIGURE 4
B-4.3) Overload Protection:
Current sensing overloads must be provided in the pump
control panel and should be properly sized for the full load
current of the pump. Three normally closed (N/C) thermal
sensors wired in series (one per phase) are embedded in
the motor windings and will detect excessive heat in the
event an overload condition occurs which will then trip and
stop the pump when wired in series with the pump contactor
control circuit. The thermal sensor leads marked P1 and
P2 MUST be connected in series with the stop button of
the pilot circuit of the magnetic motor controller located in
the control panel so that the thermostat will open the circuit
before dangerous temperatures are reached. A manual
momentary start switch is required to prevent the automatic
restarting of the motor when the thermostat resets. For a
typical wiring diagram, refer to Figure 4.
In the event of an over temperature condition, the source
of this condition should be determined and rectified before
the pump is put back into normal operation.
DO NOT LET
THE PUMP CYCLE OR RUN IF AN OVER TEMPERATURE
CONDITION OCCURS!
If current through the temperature sensor exceeds the values
listed, an intermediate control circuit relay must be used to
reduce the current or the sensor will not work properly.