Alamo Water R14-02, Installation And Operation Manual

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C. Outputs
Inlet Solenoid: A 24 VAC output is provided to power the inlet solenoid. This
output always energizes 12 seconds before the pump turns on, and de-energizes
12 seconds after the pump turns off.
Flush Valve: A 24 VAC output is provided to power the optional reject solenoid
valve. This output will energize during the flush cycle. This is an optional
accessory.
Motor Starter: A 24 VAC output is included to provide controlled pump
operation. This output powers the coil of the magnetic starter relay. This output
is energized depending on other operating parameters.
Diverter Valve: A 24 VAC output energizes when the product water quality is
below the setpoint. The valve is not included with the system. This output is
intended to power a relay or some other low current device. The maximum
current available is one ampere.
D. Inputs
WARNING: All the inputs described below are dry contacts. Do not apply voltage to
these contacts or permanent damage to the controller will result.
Conductivity Probe: There are four inputs for the conductivity probe, two for the
thermistor and two for the conductivity. Only probes with a cell constant of 1.0
and a thermistor with a nominal resistance value of 20K at 25' C will work with
this controller.
Low Pressure Switch: This is a dry contact that signals the system to shut down if
the pump suction pressure falls below the desired value. This is a normally open
contact. When a circuit is not complete between the two terminals, the system
will operate. If contact is made between the two terminals, the system will shut
down. The LCD display and a LED will indicate when the system is shut down
due to low pressure. The controller can be programmed to automatically restart.
This is described in Section III, Operation.
Tank Level: This is a dry contact that signals the system to shut down when the
storage tank is full. This contact is normally closed. When a circuit is complete
between the two terminals the system will operate. If contact is broken between
the two terminals, the system will shut down if it is operating in the tank feed
mode. A
LED will indicate when the tank is full. The system will restart itself
when the contact is closed. The switch for this function in not provided with the
controller.