Description
The Copeland 918-0056-21 is a 480-volt crankcase heater engineered as a genuine OEM replacement component for compatible Copeland compressors. Crankcase heaters are a critical line of defense in refrigeration and air conditioning systems, preventing refrigerant migration into the compressor oil during off-cycle periods. By maintaining the crankcase oil at an elevated temperature, this heater helps eliminate liquid slugging, reduces wear on internal compressor components, and extends overall compressor service life.
Key Features
- Genuine Copeland OEM replacement crankcase heater
- Rated for 480V operation
- Prevents refrigerant migration into compressor oil during off cycles
- Reduces risk of liquid slugging and compressor damage
- Helps maintain proper oil viscosity for reliable start-up
- Direct replacement for compatible Copeland compressor models
Why Crankcase Heaters Matter
During extended off cycles — especially in cold ambient conditions — refrigerant can migrate and dissolve into the compressor’s crankcase oil. When the compressor restarts, this refrigerant-oil mixture can cause violent foaming and liquid slugging, leading to premature compressor failure. The Copeland 918-0056-21 crankcase heater keeps the oil warm enough to prevent this migration, ensuring clean, reliable compressor starts and protecting your investment.
Application
- Commercial and residential air conditioning systems
- Refrigeration systems using compatible Copeland compressors
- Systems operating in low ambient temperature environments
Product Specifications
- Brand: Copeland
- Part Number: 918-0056-21
- Voltage: 480V
- Type: Crankcase Heater
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