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TASK	Primary Contact	Secondary Contact	PERIOD (days)	NEXT MAINTENANCE	LAST MAINTENANCE
DIRC N2 Purge Filter	keithb@jlab.org	dallen@jlab.org	1095	12/12/27	12/12/24
Check the differential pressure between the input to the manifold (usually about 4" H2O) and the output (usually 1.5" H2O). If it more than 2.7 inches, change the filter. Matheson cartridge Part # 451 (Oil & Water). If the filter is visibly dirty, change it.