Guardian DP47 NEMA 12, 3R & 4Air-Cooled Panel-Mounted Air Conditioners

The Guardian DP47 is a versatile panel-mounted air conditioning system designed for NEMA 12, 3R, and 4 electrical enclosures, delivering reliable thermal management and environmental protection for sensitive industrial equipment. Built with a heavy-duty steel shell finished in ANSI 61 gray baked powder coat, with custom color options available, this unit provides a robust, corrosion-resistant exterior that maintains its appearance and integrity in demanding operational environments. The enclosure is fully gasketed to ensure tight, leakproof installation in full compliance with NEMA Type 4 ratings, protecting internal electrical components from dust, moisture, and environmental contaminants.

The Guardian DP47 incorporates advanced closed-loop cooling technology that completely isolates the cool, dehumidified component compartment from ambient airflow, preventing any invasion of unconditioned air into the protected enclosure interior. A built-in condensate evaporator eliminates the need for manual condensate drainage under normal operating conditions, with overflow drain provisions included for high-humidity installations. The unit employs CFC-free R134a refrigerant for environmentally responsible operation, while epoxy-coated condenser and evaporator coils withstand 1000 hours of salt spray testing per ASTM B 117, providing extended service life in moderately corrosive environments. A compressor short cycle protector safeguards against damage from frequent restarts caused by fluctuating loads, solar gain, or power interruptions, significantly extending compressor longevity. The condenser impeller speed controller modulates fan operation based on coil temperature, reducing noise levels, minimizing compressor cycling, and preventing freeze-up conditions for quieter, more efficient performance.

Both programmable thermostat and temperature alarm functions provide operators with precise environmental control and early warning capabilities should conditions drift outside acceptable parameters. A multi-layer corrugated aluminum filter with aluminum frame keeps internal components clean in dusty or contaminated environments, with replacement filters readily available. The unit includes a minimum six-foot three-wire power cord and is UL/CUL Listed and CE Compliant for global installation confidence. Corrosive operational environments may impact warranty coverage; contact the factory for specific guidance in severe applications such as wastewater treatment facilities.