13
• 
Do not mix refrigerants in recovery units and 
especially not in cylinders.
• 
If compressors or compressor oils are to 
be removed, ensure that they have been 
evacuated to an acceptable level to make 
certain that fl ammable refrigerant does not 
remain within the lubricant.
• 
The evacuation process shall be carried 
out prior to returning the compressor to the 
suppliers.
• 
Only electric heating to the compressor body 
shall be employed to accelerate this process.
• 
When oil is drained from a system, it shall be 
carried out safely.