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I. Introduction
NanoTron controllers are microprocessor based menu driven units for timer based relay activation. All settings
are entered into the controller through a simple front panel keypad which includes relay test keys and LED
indicating lights.
II. Description
NanoTron dual selectable timers are designed to automate the addition of various chemicals or activate other
devices via a relay output. All units include:
* Twototalizingwatermeterinputsthatcanbeconguredforcontactingheadorhalleffectmeterinputs.
* Two drum level inputs that can be set to disable the relay outputs.
* Twomechanicalrelayoutputswithnormallyopenandnormallyclosedcontactsthatcanbecongured
for powered or dry contact relay operation (see page 4).
* A“forceon”timerthatallowsformanualactivationoftherelaysforauserdenedamountoftime.
Each of the 2 timers, in a NanoTron, can be individually programmed as one of the following types:
1. Pulse Timer – Accepts dry contact pulses from a water meter (supplied separately). It can accumulate
1-9999 pulses to activate the timer to run from 0-99 minutes, 59 seconds in minutes and seconds.
Timer will store up to 5 additional activations during an individual run time.
2. Recycle Timer–Providesauserdened“off”cycleinHH:MMandauserdened“on”cycleinMM:
SS that is repeated constantly.
3. 28-Day Timer - 28-day feed timers, typically used for biocide feed are based on a 28-day cycle with
two independent programmable feed cycles allowing for feed on selectable days and weeks.
4. Batch Timer -TimeractivatedbytheForceOn/Offkeyforauserdenedruntime.
III. Installation
Electrical Wiring
The controller has an internal regulated power supply that will operate in the range of approximately 100 to
240 VAC on the incoming wiring. Output relay(s) are protected with a replaceable fuse. Relay output voltage
will equal the incoming line voltage.
Prewired units are supplied with a 16 AWG cable with a 3-wire grounded USA 120 volt plug for incoming power
and 18 AWG 3-wire grounded receptacle cords for all control relay outputs. Conduit units are supplied with
liquid tights and adaptors for easy hard wiring to supplied connectors.
NOTE: Liquid tight ttings and some labeled signal leads are provided for signal (low voltage)
connections, such as water meter inputs.
WARNINGS
1. The controller should be connected to its own isolated circuit breaker, and for best
results, the ground should be a true earth ground, not shared. Wiring must be done
according to all applicable local codes.
2. Power (line voltage) must be disconnected while making any connections. If power is
supplied to the unit, line voltage will be present on the relay cards.
3. Low voltage signal wires (probes, ow switch, water meter, etc.) should never be run
in conduit with high voltage wires.
4. Hall effect meters that require +12 VDC must use an external power supply (TFS-PWR).
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