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Pressure-test the system with dry nitrogen according to local environmental and safety codes.
The single-screw design features one main ceramic or metallic screw rotor meshing with two star-shaped gate rotors.
: Check electrical cabinets for dust/moisture and verify belt tension (if applicable).
Typically, synthetic Polyolester (POE) oils are required for HFC refrigerants (like R134a or R404A), while mineral or alkylbenzene oils are used for HCFCs (like R22). Never mix different types or brands of oil. Oil Charging Procedure
Infinitely variable modulation from 100% down to 25% (or 12.5% on certain units) via a microprocessor-managed slide. Oil Management