Scroll Crankcase Heater ZRH2

Scroll Crankcase Heater ZRH2

A scroll crankcase heater is a device installed on scroll compressors. Commonly used in aircon and refrigeration systems. The heater plays a vital role in protecting the compressor during cold weather or extended off cycles.

Prevents Refrigerant Migration: Keeps the oil warm so liquid refrigerant doesn’t dissolve into it during shutdowns.

Stops Oil Foaming: Ensures oil remains effective and prevents foaming on startup, which can starve bearings of lubrication (bearing washout).

Protects Against Slugging. Prevents a large amount of liquid refrigerant and oil from being forced into the scrolls, which can cause catastrophic failure

When it’s used:

Cold Weather: Essential for systems in cooler climates

Long Downtime: Recommended for systems that sit off for extended periods (like winter).

Heat Pumps: Crucial for heat pumps to handle the reversals and cold cycles. 

Works on

Copeland scroll compressor crankcase heater

Panasonic scroll compressor Crankcase heater

Invotech scroll compressor crankcase heater 

Coldroom and freezer room accessories