Hired-Hand System 500 Power Curtain Controller - Manual (Page 5)

System 500™ Power Curtain™ Controller 3
6. Components Description
6.1. General Description
The System 500™ Power Curtain™ controller is an electronic environmental controller
which uses knobs for user controls. The controller can operate the following:
ð One curtain machine intelligently based on time.
ð Eight stages of heat and cool.
ð User selected 5 or 10 minute timer.
ð Any stage can be on either a stir timer, or a negative timer.
ð Two temperature sensors for inside the building. (One extra for
outside temperature with OSC model.)
In addition to the basic operation outlined above, an enhanced model is available which
includes the following functions:
ð Variable speed fan.
ð Tunnel ventilation control.
ð Open/Close operation of a tunnel inlet curtain.
6.2. Controls
6.2.1. Front Panel
The following controls are located on the outside of the panel.
6.2.1.1. Automatic/Manual
The automatic/manual switch is used as its name implies. The
Automatic position allows the controller to move the curtains to
control temperature. When the switch is in the manual position, the
controller will still automatically operate the stages to control
temperature, but the curtain can only be moved using the
open/close/off switch.