Tornatech JP - Methods of Starting and Stopping

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This duplex jockey pump controller is designed to alternatively control two jockey pumps (lead & standby) for
maintaining the designed water pressure in fire pump serviced systems and therefore prevent short cycling of the
fire pump due to small leaks.
The presence of a 100% standby jockey pump associated with a circuit that alternates lead & standby jockey
pumps each time, provides full back up and easy maintenance of the system (any pump can be manually selected
as lead).
MODEL DJPD
This dual power source duplex jockey pump controller is designed to accept two separate power sources (i.e.
normal & alternate) and to alternatively control two jockey pumps (lead & standby) for maintaining the designed
water pressure in fire pump serviced systems and therefore prevent short cycling of the fire pump due to small
leaks. An automatic switchover device automatically connects the jockey pump to alternate power in case of
normal power failure. This system maintains the jockey pump operational under all circumstances and eliminates
unnecessary starting of the fire pump with all associated consequences (i.e. high power drain, load shedding,
undesirable alarms). The presence of a 100% standby jockey pump associated with a circuit that alternates lead &
standby jockey pumps each time, provides full back up and easy maintenance of the system (any pump can be
manually selected as lead).
Methods of starting/stopping
METHODS OF STARTING
AUTOMATIC START
The controller will start automatically on low pressure detection by the pressure sensor when pressure drops
below the cut-in threshold.
MANUAL START
The motor can be started by pressing the START push button, regardless of the system pressure.
METHODS OF STOPPING
MANUAL STOP
Manual stop is done by pressing the priority STOP push button. Note that pressing the stop push button will
prevent the motor from restarting as long as the button is pressed, plus a two seconds delay.
AUTOMATIC STOP
The motor is automatically stopped after the restoration of the pressure (above the cut-out threshold), after a
programmable run period timer.
EMERGENCY STOP
The emergency stop is always possible in any starting conditions and is done by using the disconnect switch
located on the door.