The Parallax 7100 Series Power Center is a solid-state electronic power supply designed for recreational vehicles (RVs), providing both 120-volt AC and 12-volt DC power. It integrates a power converter, a 120-volt AC panelboard, and a 12-volt DC distribution fuse block into a single unit, offering a comprehensive power management solution for RVs. The device is designed to provide safe, reliable, and maintenance-free service, utilizing advanced technology similar to that found in computer power supplies.
Function Description:
The primary function of the Parallax 7100 Series Power Center is to convert 120-volt AC shore power into stable, voltage-regulated 12-volt DC power for all 12-volt operated devices in an RV. This includes lights, appliances, and charging the RV's battery. The integrated 120-volt AC panelboard manages the distribution of AC power to various circuits within the RV, including the converter itself. The 12-volt DC distribution fuse block protects the 12-volt circuits from overcurrents. The converter is capable of operating without a battery connected, making it versatile for various RV setups. It also functions as an excellent battery charger, although proper battery polarity must be observed during installation to prevent damage to the converter's main fuses.
Important Technical Specifications:
- Input Power: 120 VAC, 60HZ, 3-wire with ground supply.
- Input Circuit Protection: Requires circuit protection no larger than 30-ampere.
- Output Power (DC): Nominal 12-volt filtered DC power.
- Technology: Electronic switch mode power converter.
- Safety Standards: Tested to comply with stringent safety standards and is Intertek/ETL listed for RV use in the U.S.A. and Canada.
- Cooling System: Electronic fan cooling system that activates automatically to maintain optimal operating temperatures.
- Overload Protection: Features designed to protect against over-temperature and output overload. If the 12-volt load exceeds the converter output rating, the output voltage will drop to prevent further current increase, automatically recovering when the load is reduced. Similarly, if the converter exceeds safe operating temperature limits, the output voltage will recover once the temperature returns to normal.
- Battery Wiring: The battery supply wire from the fuse block terminal "POS +" to the battery must be of adequate size and rating and protected within 18 inches of the battery with an appropriately rated fuse or breaker.
Usage Features:
- Integrated Design: Combines AC panelboard, DC distribution, and power converter into one unit, simplifying RV power management.
- User-Friendly AC Panelboard: The 120-volt AC panelboard is located behind a decorative door, providing easy access to main and branch circuit breakers. Each breaker has an identification label indicating the circuit it controls.
- Breaker Reset Mechanism: Tripped 120-volt AC breakers can be reset by moving the handle to the "off" position and then back to "on."
- DC Fuse Block: The 12-volt DC distribution fuse block is located behind the decorative front door in the upper right-hand corner, allowing for easy inspection and replacement of fuses.
- Voltage Regulation: Provides a clean and stable, voltage-regulated output, crucial for the longevity and proper functioning of RV electronics.
- Quiet Operation: While the electronic fan cooling system is essential for converter life, the "air sound" generated by the fan may be audible in quiet environments.
- Indoor Use Only: The converter is designed exclusively for indoor use within the RV.
- Mounting Requirements: Must be mounted to a vertical surface with the front open to the living area. Requires a minimum of 22 inches clearance to the front and adequate room behind for wire routing and air intake. Zero-clearance compartments are to be avoided to prevent overheating.
- Environmental Considerations: Should not be mounted in harsh environments with high levels of dust, dirt, or moisture. Also, avoid mounting in battery compartments or areas where flammable materials are stored.
Maintenance Features:
- Maintenance-Free Design: The solid-state electronic nature of the power supply contributes to its maintenance-free operation.
- Fuse Replacement: In case of a 12-volt appliance failure, users can check and replace blown fuses in the DC distribution fuse block. Only specific fuse types (Littelfuse type 257, Bussman type ATC, or Possing Electronic type ATP) should be used for replacement, and never a larger size. If a fuse repeatedly blows, professional assistance is recommended.
- Troubleshooting Guide: The manual provides basic troubleshooting steps for the 120-volt AC panelboard and 12-volt DC power converter, such as checking shore power connection, breaker status, and fuse integrity.
- Professional Servicing: For complex issues or repeated problems, installation and servicing are to be referred to qualified service personnel, licensed electricians, or certified RV technicians.
- Air Circulation Check: If the converter experiences output voltage drop due to overheating, users should check that the converter's air circulation is not blocked.
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