1. Introduction
The SILENT KNIGHT DSC PTC1620U is an AC plug-in transformer designed to provide consistent power to compatible DSC Impassa Alarm Systems. This unit ensures the alarm system receives necessary operating power and facilitates the charging of its backup battery.
It is specifically intended for Impassa systems with integrated alarm communications that do not include a transformer as part of their standard package.
2. Safety Information
- CAUTION: Risk of Electric Shock.
- This device is designed for Dry Location Use Only. Do not expose to moisture or liquids.
- Ensure the power outlet is easily accessible for disconnection if needed.
- Do not attempt to open or modify the transformer. There are no user-serviceable parts inside.
- Disconnect power before making any connections to the alarm system.
3. Package Contents
- 1 x SILENT KNIGHT DSC PTC1620U AC Transformer
4. Setup and Installation
Follow these steps to properly install your DSC PTC1620U AC Transformer:
- Identify Connection Points: Locate the power input terminals on your DSC Impassa Alarm System. These are typically labeled for AC power input.
- Prepare Wiring: Ensure the alarm system is powered off and disconnected from any other power sources before making connections.
- Connect to Alarm System: Connect the low-voltage wires from the transformer's terminal block to the corresponding AC input terminals on your DSC Impassa Alarm System. Ensure polarity is correct if specified by your alarm system's manual. The transformer features two screw terminals for connection.
- Plug into Outlet: Insert the transformer's two-prong plug into a standard 120VAC wall outlet. Ensure the outlet is easily accessible and not controlled by a switch.
- Verify Power: Once connected and plugged in, power on your alarm system and verify that it is receiving power and operating correctly.
Figure 1: The DSC PTC1620U AC Transformer, showing its two-prong plug for wall outlets and the low-voltage screw terminals for connection to the alarm system. The label indicates input 120VAC 60Hz 0.43A and output 16.5VAC 20VA, and UL listing for dry locations.
5. Operation
The DSC PTC1620U AC Transformer operates automatically once properly installed and connected to a live 120VAC outlet. It continuously supplies 16.5 Volts of AC power at 20 VA to the connected DSC Impassa Alarm System.
The transformer's primary function is to power the alarm system and maintain the charge of its backup battery, ensuring continuous operation even during power fluctuations or outages (when the backup battery is fully charged and functional).
6. Maintenance
- Cleaning: Keep the transformer clean and free from dust. Use a dry cloth for cleaning. Do not use liquid cleaners.
- Inspection: Periodically inspect the transformer and its wiring for any signs of damage, such as frayed cables, cracks in the casing, or discoloration. If damage is observed, discontinue use and replace the unit.
- Environment: Ensure the transformer is always used in a dry indoor location, away from direct sunlight, heat sources, and moisture.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Alarm system not receiving power. |
|
|
| Transformer feels warm. | Normal operation. | A slight warmth during operation is normal. If the transformer becomes excessively hot to the touch or emits a burning smell, disconnect it immediately and replace it. |
8. Specifications
| Model Number | PTC1620U |
| Brand | SILENT KNIGHT |
| Input Voltage | 120 VAC, 60 Hz, 0.43 A |
| Output Voltage | 16.5 VAC, 20 VA |
| Dimensions (Approx.) | 4 x 3 x 3 inches |
| Weight (Approx.) | 1.04 Pounds |
| Compliance | UL Listed (Class 2 Transformer) |
| UPC | 808236716098 |
9. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your DSC Impassa Alarm System or contact the manufacturer directly. Specific warranty terms may vary.
