Draining a Rolair JC10

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This may be a semi stupid question, but I just replaced my noisy PC pancake with a JC10 today.  To drain the air from the PC, all I did was pull the safety and drain it to about 20 and then open the drain valve to release moisture and any remaining air (per the manual)  The Rolair manual doesnt seem to specify the preferred way to drain a full or almost full air tank (unless I missed it).  Do I just do the same as I did for the PC or something else? 

I love this compressor, normally when I turned on the PC in my shop my whole family would complain.. this puppy is quiet.

 

[tjbnwi]

I relieve the pressure then drain the tank. Same process as your PC.

Tom

 

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Thanks for the reply.