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10/24/97 FRI 16:02 FA% w w GOETSCH 1�014 FTA Sequence Of Operation 750 � Limited Service Controllers � 2. The corrtroller is stopped manually by SH!/TDOWN/NTERLOCK OPEAATION depressing the manual "Stop" pushbutton. To prevent the controller f�om starting or running If system pressure fs not�estored,the motor will from other fire protection equipmeM signals,a � st8rt again if the pushbutton is released in the normally open contact,which closes to interlock,js same manner described in"AUTOMATIC required between terminals 1 and 10. Use of the START AND STOP". shutdown ir�terlock doss not prsvent manual stsrting 3. When the stop pushbutton is released and, if or stopping of the controller_ system pressure has been restored, 2CR will be E�EAGENCY AUN MECHANISM deenergized.This allows 1CR to be energized. This device is used to mechanlCall cl.ose motor The normally closed tCR contact opens, Y deenerglzing 1M,stopping the pump motor. If contactor 1�M in the event of a coil burnout or other the stop pushbutton is�eleased,the motor wlll e1�� problem which would pre�rent no�mal remain stopped. starting of pump motor. 4. The corrtroller is now in sta�dby candition and 1. If control circuit power is available,the is ready to start should a staR signal be received. contacts on the Emergency Run Mechanism close,en'ergiiing relay 3CR_3CR will deenergize OPEAATION BYDELUGE VALVE 1CR,which energizes motor contactor 1M. The jumper between terminals 8 and 10 is removed 2. If control circuit power is not avallable,the and the deluge valve normally closed contacts are Emergency Run Mechanlsm mechanically cvnnected between terminals 8 and 10. Whether closes contactor 1M,starting the motor. system pressure is low o�high,a call to start by WARNING-This is an EMERGENCY device and opening the DV contaets will deenergize 1CR,closing should be used only in an emergency 1CR contacts and energizing 1M,starting the pump run situation. Casual or careless use of motor,The controller will then p�oceed through�the this mechanism may result in demsge staRing sequence. Aefer to"PUMP MOTOA to controlle�electrical components. It STARTING SEQUENCE"below. is not intended for. nor should be used MANUAL START AND STOP as a TESTING device. C The pump moto�may be started by the"Start" To stop the pump rnotor when the emergency run handle is in the"On"positlori and locked, place the pushbutton mounted on the flange of the circuit breaker handle in the"Off"position, enclosu�e or by a remote"5ta►t"pushbutton. push-in and turn the em�rgency run handle to Once started manually, automatic starting by pressure ��Off',then release. switch iPS or deluge valve has no effect on this operation. The pump motor will run until the"Stop" PUMP MOTOR STAATING SEOUENCE pushbutton is depressed. When the pump motor is called upon to start,the 1. When the flange mounted or remote"StatY' following sequence of operation t8kes place: pushbutton is depressed, relay 3CR will be Coritactor 1 M energizes and connects the motor energized. 3CR seals itself, termi�als to the power source.See Field 2. 3CR contacts will open, deenergizing 1CR,and Connection drawing, FC750-10,for proper closing the normally closed 1CR contact, wiring Instructions. energizing motor contactor 1 M, starting the 4pOWER ON"AND"PHASE REVERSAL" motor.The starting sequence will then follow p►�OT LAMPS that described in "PUMP MOTOR STARTfNG 7he green "Power On"pilot lam i SEDUENCE"below. whenever the system is energized without power� 3. Depressing the 'Stop" pushbutton deenergiies outage or phase failure. Loss of"Pawer On" contactor 1 M. Unless the�e is a call to start as Illumination DOES NOT MEAN THAT THE CON- described above,the motor will remain stopped TROLLEA HAS BEEN D/SCONNECTED. when the"Stop"pushbutton is released. Hazardous voltages may exist_ The separate red pilot lamp "PHASE REVERSAL" is illuminated when phases are reversed. Under a phase reversed condition, "Power On"and"Phase Reversal"are bath illuminated. Phase rewrsal is an unsafe conditlon. The normal standby controtler condition is- � POWER ON- Illuminated green � r//'��/'�. PHASE REVERSAL- Not illuminated Fire Pump Contro/ Division 106 MecKenan Drive•eox 9000•Cary, NC 27512•(919)469-3454•FAX(919)48�5539�TWX 51Q-920-0638 Publl�atlon sQ7so-ol Re,r.9(9Ja8)