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Aerator / compressor monitoring and control
The aerator 1 circuit is always active and is intended to operate an aerator motor.
The aerator 2 circuit is enabled by DIP switch settings and can be configured to
operate an aerator motor or a compressor. DIP switch settings also configure
the hourly on-time duty cycle of the aerator circuits, which can range for 30
minutes on / 30 minutes off, to continuous run (note – NSF listed J-1500 series
systems must operate on continuous run). The current of each aerator circuit is
controlled by an independent relay. A current transformer in each aerator circuit
is used to monitor the aerator / compressor current. While in normal operation
mode, in the event of an over current or under current condition of any of the
critical treatment components (aerator / compressor) the system will shut down
the affected circuit and enter an automated reset program. The automated reset
program will attempt to re-start the affected circuit after a five minute delay cycle.
If the circuit then functions properly the system returns to normal status, if the
circuit does not function properly then the program enters another five minute
delay cycle. If after the second five minute delay cycle the circuit is will not
function properly the program enters a one hour delay cycle. If the circuit cannot
function properly after the one hour delay cycle the power control relay for the
corresponding aerator circuit is turned off, and the panel enters the alarm
condition, which is indicated by a flashing LED and central alarm beacon, and an
audible signal. If so equipped, the panel will also signal an auto-dialer or modem
to transmit the alarm condition. The over-current or under-current conditions can
be distinguished by different flash rates of the LED and beep rate of the buzzer.
While in test mode the automated reset program will be deactivated. The control
panel may be left in test mode if instantaneous alarm function is required.
Pump motor control
The pump motor control circuit is always active, and the pump motor control relay
will be on. In the event of an alarm condition the pump circuit will turn off power
to the pump.
Auxiliary output control
The active auxiliary output circuits are selectable with the DIP switches. Relays in
the auxiliary output circuits control switching of 120VAC to the output terminal
blocks. The 120VAC is fused on the circuit board and switched by the circuit
board power switch. As currently configured, auxiliary output 1 is intended for
control of the alarm signal beacon mounted to the top of the enclosure, and
causes the beacon to flash in an alarm condition. If Auxiliary outputs 2 & 3 are
enabled, the outputs are on during normal operation and off in an alarm
condition.
Jet Inc. 750 Alpha Drive Cleveland, OH 44143 www.jetincorp.com 800.321.6960
QA-SAL-132
REV 7/31/2013
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