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For indoor use only. Install in a non-corrosive, dry environment only.
External dimensions of the enclosure (Inches) 8.5 x 12.5 x 4.5
Minimum ambient air temperature
-20F
*2) Maximum ambient air temperature
(150 Amps)
85F
*2) Maximum ambient air temperature
(100 Amps)
110F
Maximum ambient air temperature
(60Amps)
140F
Operations above or below the maximum temperature range may result in loss of accuracy and/or
a reduction in current handling capability
Designed for battery-based systems only.
These specifications and measurements are subject to periodic change without notice.
Replacing the Solenoid:
The solenoid is a mechanical switch that has a limited life expectancy that is dependent on many factors including, but
not limited to, the number of times it has cycled, the amount of amperage it must carry and switch, the voltage across
the terminals as well as ambient heat in the installation environment. In active systems, the solenoid will eventually
need to be replaced. Although we use only the highest quality silver contact solenoids available that support both
continuous and surge amperages that far exceed the design of this controller, it is a mechanical device that is subject to
failure. The higher the voltage and amperage of your system, the shorter the life expectancy of this solenoid is likely
to be. This controller should not be considered for use in solar systems where absolute reliability is required. No
mechanical switch can offer such a level of reliability. For such systems, our solid-state controllers (no relays or
solenoids) should be considered.
To replace the solenoid, 1
st
ensure all power is removed from the unit. 2
nd
, disconnect all of the wires and straps
that are tied to or bolted on to the solenoid. 3
rd
, using a Phillips head screwdriver, remove the two #10 screws that
fasten the solenoid to the back-plate. The HVAD uses Zimmerman nuts that will not fall out or turn as you remove
the screws. Once the solenoid is free, simply lift it out and replace it by reversing this procedure. Take special care
not to over-tighten the nuts on the terminals of the solenoid as they can be stripped and cross-threaded very easily.:
Automatic Nominal Battery Bank detection:
When power is first applied to the HVAD controller, the voltage of the connected battery bank is measured to
determine if the controller should operate in the 12, 24 or 48-volt mode. This process is automatic and eliminates the
need for manual jumper settings or other user intervention. This process; can however, report the wrong value to the
controller if the connected battery bank has been depleted beyond normal limits (A fully dead battery). For example, if
a 24-volt battery has been allowed to deplete to perhaps 15 volts and the controller is restarted during this period, then
the controller will assume it is connected to a 12-volt bank, not 24 volt. If this occurs, then simply increase the bulk
charge point and let the battery bank recharge. Once the battery is recharged within normal limits; use the menu
system to reset the factory defaults or simply restart your controller.
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