Danfoss Crankcase Belt Heater | 54W, 230V | 7773107

Product Description:

The Danfoss 7773107 is an essential safety accessory specifically engineered for smaller to medium-sized Maneurop reciprocating compressors operating in the UAE. This 54W, 230V heater wraps securely around the lower portion of the compressor shell to maintain the oil temperature above the ambient dew point during off-cycles. In the UAE’s coastal regions where night-time humidity is high, this prevents refrigerant from condensing and mixing with the oil. By eliminating oil dilution and foaming, the 7773107 ensures that the compressor bearings and pistons receive pure lubrication immediately upon start-up, significantly reducing mechanical wear and preventing liquid slugging in Dubai’s high-load refrigeration plants.

Key Features & Benefits:

• Targeted Thermal Protection: Maintains optimal oil temperature during standby, preventing refrigerant migration in the fluctuating UAE climate.
• Safe System Start-ups: Eliminates oil foaming at start-up, protecting the compressor’s internal valves and pistons from damage.
• Snug-Fit Design: The adjustable belt ensures maximum surface contact with the compressor shell for efficient heat transfer in UAE installations.
• High-Durability Components: Built with heat-resistant insulation and a robust clamping mechanism to survive the intense heat of Dubai plant rooms.
• Energy Efficient: 54W power consumption provides the necessary heat protection without significant energy overhead for UAE facilities.

Technical Specifications:

FAQs:

• Q: Why is a 54W heater like the 7773107 necessary for UAE rooftop units?
• A: During the night, rooftop units in the UAE cool down significantly. Refrigerant naturally moves to the coldest point (the compressor oil). The heater keeps the compressor warmer than the rest of the system to prevent this.
• Q: Can this heater be used with both R22 and R404A compressors in Dubai?
• A: Yes, the heater is a mechanical accessory that fits the external shell of both MT (R22) and MTZ (R404A) compressors.
• Q: Does it matter how high the belt is placed on the compressor?
• A: Yes, for the best results in UAE installations, the belt should be placed as low as possible on the compressor shell to heat the oil sump directly.