WAC 296-826-40055   Compressors for refrigerated systems.  

     You must:

     • Make sure condensers are designed:

     – For at least 250 psig;

     AND

     – To manually or automatically purge noncondensibles.

Note:	• Condensers may be cooled by any of the following:
	– Air
	– Water
	– Air and water.

     You must:

     • Make sure compressors used for refrigerating ammonia meet all of the following:

     – Are connected to plant piping with shut off valves located as close as practical to compressor connections

     – Have a safety relief valve that is both:

     ▪ Large enough to discharge the full capacity of the compressor;

     AND

     ▪ Connected to the discharge and placed before any shut off valve

     – Have an oil separator on the discharge side, where necessary to prevent contamination.

     – Have a drainable liquid trap or other adequate method on the compressor suction to minimize the entry of liquids into the compressor.

     – Pressure gauges on the suction and discharge ends graduated to at least one and one-half times the maximum pressure that can develop.



[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 49.17.060. 06-10-067, § 296-826-40055, filed 5/2/06, effective 9/1/06.]