Febco 856 Manuals

IOM-F-DC/DCDA I N S T A L L A T I O N , O P E R A T I O N , M A I N T E N A N C E Maintenance Manual Double Check and Double Check Detector Assemblies Series 850, 856, 870V & 876V 21⁄2" - 10" (65 – 250mm) Read and understand this manual prior to installing, operating or servicing this equipment. Table of Contents Features and Operating Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 How to Order Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Trouble Shooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Vandalism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Freeze Protection Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 General Service Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Service Procedures for Models 850, 856, 870V & 876V (21⁄2" - 10") . . . . . . . 6 Service Procedures for Model 805YB — 3⁄4" Bypass . . . . . . . . . . . . . . . . . . 7 Parts Selection Guide Model 850/856 (21⁄2" - 10") . . . . . . . . . . . . . . . . . . . . . 8 Parts Selection Guide Model 870, 870V / 876, 876V (21⁄2" - 10") . . . . . . . . . 9 Parts Selection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11 Series 850 Series 876V