Guardian DP47L-2NEMA 4 Air Conditioners

The Guardian DP47L-2NEMA 4 Air Conditioner is a robust, sealed enclosure cooling system designed to maintain precise temperature control in industrial electrical cabinets and sensitive equipment spaces. It combines a heavy-duty steel shell with a baked powder finish in ANSI 61 gray--with custom color options available--to deliver both durability and professional appearance in demanding operational environments. The unit carries full UL/CUL listing and maintains a NEMA 4 rating per UL50 for reliable performance in diverse installations.

The cooling system features a closed-loop design that isolates the enclosure interior airflow from ambient conditions, preventing warm or humid outside air from infiltrating the sensitive component compartment. A built-in condensate evaporator eliminates the need for manual drainage under normal operating conditions, with an overflow drain fitting and hose included for installations subject to elevated humidity. The epoxy-coated condenser and evaporator coils are engineered to withstand 1000 hours of salt spray testing per ASTM B117, providing extended corrosion resistance in challenging environments. A thermal expansion valve and hot gas bypass valve optimize refrigeration efficiency, while condenser impeller cycling further reduces energy consumption during partial-load operation.

Operational reliability is enhanced through a compressor short cycle protector that prevents damage from frequent restarts caused by low heat loads, power interruptions, or solar gain--conditions that significantly shorten compressor life. A programmable thermostat with cover and programmable temperature alarm allow precise climate management, with remote monitoring capability via TTL connection. The system operates on R134a refrigerant, a CFC-free alternative that meets environmental regulations. A 20-foot power cord with plug and 3/8" ID x 1/2" OD PVC drain tube complete the installation package for immediate deployment.