Copeland 918-0047-03 Heater

The Copeland 918-0047-03 Crankcase Heater is a critical component for maintaining compressor reliability in high-voltage industrial and commercial HVACR applications. Operating at 575V and delivering a steady 90 watts of heat, this genuine OEM part is specifically engineered to prevent liquid refrigerant migration to the compressor shell during off-cycles. By keeping the crankcase oil temperature significantly higher than the system's coldest point, it effectively eliminates oil dilution and the risk of refrigerant slugging upon startup. A veteran technician knows that cold starts without adequate crankcase heat lead to premature bearing failure and reduced lubrication efficiency. This 48-inch heater is a standard requirement for Copeland scroll compressors and semi-hermetic units exposed to low ambient conditions. Its rugged construction ensures it withstands the thermal cycling and vibration typical of heavy-duty rooftop and refrigeration environments, providing essential protection for your cooling plant’s primary assets.

Key Benefits:

• Prevents Refrigerant Migration: Actively keeps the crankcase oil warm to stop refrigerant from condensing in the compressor during idle periods.
• Reduces Oil Dilution: Maintains proper oil viscosity for immediate lubrication at startup, extending the life of internal moving parts.
• Optimized Heat Transfer: The 48-inch belly-band design ensures even heat distribution around the compressor base.
• Industrial Voltage Compatibility: Specifically rated for 575V HVAC systems, making it a direct-fit replacement for heavy industrial equipment.
• Heavy-Duty Reliability: Built with robust materials to survive harsh outdoor environments and constant thermal stress.

Common Questions: What happens if the 575V 90W crankcase heater fails? Failure often leads to liquid slugging or "foaming" of the oil at startup. This washes away essential lubricants from the bearings, which can cause catastrophic compressor failure or shortened service life. Can I use this heater on a 460V system? No. This heater is specifically rated for 575V. Using it on a lower voltage will result in significantly reduced wattage output, which will fail to keep the oil warm enough to prevent migration in cold weather. Where should the heater be positioned on the compressor? For maximum efficiency, wrap the heater around the lower part of the compressor shell, ideally below the oil level and approximately two inches above the mounting plate.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.