20
LARGE CONTROL PANEL
The larger FAST® control panels are provided with box-lid enclosures.
The face of the enclosure features model and serial numbers, power
indicator lamp, alarm indicator lamp, alarm silence button, and blower
switch. The electrical details of the control panel are printed on a label
affixed to the outside of the enclosure. The inside of the control panel
enclosure contains a printed circuit board, and a contactor and
overload rated for the blower motor horsepower, voltage, and phase.
Some panels also contain a transformer mounted next to the
contactor. Terminations for incoming and outgoing power are made in
the field between the circuit board, contactor and overload, and
blower based on the electrical diagram supplied for each panel
specifically.
Note: The overload amperage setting supplied for a
given motor size is pre-set at the factory to the
appropriate place and does not need field adjustment.
If an overload trips when energized, make sure to double-check all
connections and electrical details for the control panel, blower, and
facility power supply.
The circuit board has two sets of normally open dry contacts for optional connections such as a float switch or
pressure switch. The normally open contacts will activate the panel alarm when closed. Next to these
contacts are a 12VDC terminal which can be used to power an external dialer device, and an alarm output
terminal which can be used to signal an external device when the panel goes into alarm. The alarm output is a
normally open switch that will close during an alarm condition.
LARGE CONTROL
To Next Page
Loading...
