Hired-Hand Electro Mechanical Controls (Relay-Switches): PC-DB Curtain Controller with DIF - Manual (Page 3)

4801-1208 PC-DB-with DIF 2
2. Physical Description
Curtain Timer
Close Relay
Open Relay
Terminal
Connections
Thermostat
Relay
The picture on the left above is the front of the controller. The picture on the right is a picture of the
internals of the controller showing major components.
3. Use of Equipment
This Power Curtain Controller is built for use in agricultural enclosures for temperature control. The
machine will operate one PowerTrak machine in response to temperature changes. Additionally, the
controller has a day/night timer that will allow the use of different target temperatures at different times
during the day.
4. Installation
1. Mount unit to wall near power supply.
2. Connect nine conductor wire from PowerTrak to the terminals shown on the wiring
diagram in the back of this manual.
3. Connect the daytime thermostat to terminals as shown in the wiring diagram in the
back of this manual.
4. Connect the nighttime thermostat to terminals as shown in the wiring diagram in
the back of this manual.
5. Close door and apply power to the machine.
5. Set-up Instructions
5.1. Curtain Timer
5.1.1. Description
The curtain timer is a five minute electro-mechanical timer. This timer is very simply
designed. A constant speed motor drives the two wheels at the same speed in the same
direction. There are tabs attached to the wheels that will actuate switches on the timer
body as they pass.
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The wheel on the right is the open wheel. As this wheel rotates, the
tabs attached to this wheel will control the opening of the machine.