1. Introduction
This manual provides essential instructions for the installation, operation, and maintenance of your STERLING ProReg-DW Advanced Alternator Regulator. Please read this manual thoroughly before using the product to ensure safe and efficient operation.
2. Safety Information
Always observe standard electrical safety precautions when working with this device. Disconnect power before installation or maintenance. This product is designed for 12V and 24V systems. Incorrect wiring can cause damage to the unit or connected systems.
Warning: This product may contain materials cautioned by California Proposition 65. Handle with care and refer to local regulations.
3. Product Overview
The STERLING ProReg-DW is a universal advanced IUoU+ 4-step digital alternator regulator designed for 12V and 24V systems. It optimizes battery charging by controlling the alternator output, ensuring efficient and safe charging for various battery types.
Figure 1: Front view of the STERLING ProReg-DW Advanced Alternator Regulator, showing LED indicators, battery type selection, and wiring configuration details.
4. Setup and Installation
Proper installation is crucial for the performance and longevity of the ProReg-DW. Refer to the detailed wiring diagram provided with the product for specific connections. Below is a summary of the wire configurations:
- Yellow: Ignition feed
- White: Field wire
- Brown: Alternator B+ or D+
- Black: x 2 Negative at Alternator
- Red: Domestic battery positive
- Black/White: Battery negative
The unit supports Positive or Negative Field control. Ensure the correct setting is selected based on your alternator type. An optional connection block is available for Battery Alternator, D+, Temperature, Ignition Switch, and Link connections. A Remote Control Socket is also present for external control.
Always ensure all connections are secure and properly insulated. Install the unit in a dry, protected location, as it is rated IP67 waterproof.
5. Operating Instructions
The ProReg-DW features several LED indicators to provide real-time system status and charging information.
5.1. System Information LEDs
- Unit active: Indicates the regulator is operational.
- 12 V System setting: Illuminates for 12V system configuration.
- 24 V System setting: Illuminates for 24V system configuration.
- Alternator voltage: Indicates the current alternator output voltage.
5.2. Charge Cycle LEDs
- High charge on: Indicates the battery is in the bulk or absorption phase.
- Timer active: Indicates a timed charging phase is active.
- Float mode: Indicates the battery is fully charged and in float maintenance.
5.3. System Trips and Warnings
- High alt temp reduce: Indicates alternator temperature is high, and output is reduced.
- Battery negative trip: Indicates a fault related to the battery negative connection.
- High batt V trip RED ON: Indicates high battery voltage trip, LED is RED.
- High bat temp FLASH: Indicates high battery temperature, LED is flashing.
- High unit temp trip: Indicates the regulator unit itself is overheating.
- Low V warning: Indicates low voltage condition.
5.4. Battery Type Selection
Use the Battery type selector switch to match your battery chemistry. The selected type will be indicated by LEDs:
- Open acid: Yellow-Green LED
- Sealed acid: Green LED
- Sealed AGM: Yellow LED
- Gel (USA): Green flashing LED
The following table details the charging parameters for different battery types:
| SW | Battery Type | Max V | ABS Time | Float V |
|---|---|---|---|---|
| 1 | Open Lead acid | 14.8 | 1-3 hrs | 13.65 |
| 3 | Sealed Lead acid, AGM | 14.4 | 4-8 hrs | 13.8 |
| 2 | Sealed acid, Gel, AGM | 14.4 | 10-12 hrs | 13.65 |
| 0 | Gel & AGM (USA) | 14.1 | 4-10 hrs | 13.5 |
6. Maintenance
The STERLING ProReg-DW is designed for minimal maintenance. Periodically inspect all wiring connections for tightness and corrosion. Ensure the unit is free from dust and debris. Do not attempt to open the unit, as it contains no user-serviceable parts.
7. Troubleshooting
If the unit is not functioning as expected, refer to the following:
- ALL L.E.D.S FLASHING HIGH ALTERNATOR VOLTAGE TRIP: This indicates a significant fault. Refer to the comprehensive instructions provided with the product for detailed fault finding and resolution steps.
- No power: Check all power connections, including the ignition feed and battery connections. Verify the fuse is intact.
- Incorrect charging: Ensure the correct battery type is selected on the unit. Check alternator and battery health.
- Overheating: Ensure the unit has adequate ventilation and is not exposed to excessive ambient temperatures. Check for high alternator or battery temperatures as indicated by trip LEDs.
For persistent issues, contact STERLING Power Products technical support.
8. Specifications
- Brand: STERLING
- Model: ProReg-DW
- Part Number: PDARW
- Wattage: 300 watts
- Item Weight: 1 pound (0.45 kg)
- Product Dimensions: 7 x 5 x 2 inches (17.8 x 12.7 x 5.1 cm)
- System Voltage: 12V & 24V compatible
- Protection: IP67 Waterproof
- UPC: 887199002134
9. Warranty and Support
For warranty information and technical support, please contact STERLING Power Products directly. Keep your purchase receipt as proof of purchase. Contact details can typically be found on the manufacturer's website: www.sterling-power.com or www.sterling-power-usa.com.
