R-Pro › Field cases › Refrigeration systems
R-290 (propane) handling — flammable A3 safety rules
Likely causes
Class — natural refrigerant, GWP 3 (ultra-low), safety class A3 (highly flammable). Spreading in small commercial/domestic refrigeration
Check: Check charge limit — EPA 150 g; IEC 60335-2-89 up to 500 g (by equipment type). Always verify the charge on nameplate/manual
What to do: Before opening the circuit, remove all ignition sources (flame, electrical spark, static) and ensure ventilation. Use A3-rated tools. Prevent static during recovery. EPA 608 certification required
Field tip
R-290 is propane — even a small leak can ignite. Before work: leak-check + ventilate, and remove all nearby flames and electrical sparks.
All 565 cases work offline in R-Pro, with error codes for 62 brands and P-T data for 108 refrigerants.
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