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(E) POTTER PS10 Series <br /> The Symbol of Protection Pressure Switch <br /> Testing and Adjustment <br /> NOTE:Testing the PS10 may activate other system connected devices.The operation of the pressure alarm switch should be tested upon completion of <br /> installation and periodically thereafter in accordance with the applicable NFPA codes and standards and/or the authority having jurisdiction(manufacturer <br /> recommends quarterly or more frequently).There should be no need to adjust the PSI 0 when it is used as a pressure type waterflow indicator.It is factory set <br /> to comply with UL and FM standards. <br /> Wet System <br /> Method]: When using PS10 and control unit with retard-connect PS10 into alarm port piping on the input side of retard chamber and electrically <br /> connect PSI 0 to control unit that provides a retard to compensate for surges.Insure that no unsupervised shut-off valves are present between the alarm <br /> check valve and PSI 0. <br /> Method 2: When using the PS10 for local bell application or with a control that does not provide a retard feature-the PS10 must be installed on the <br /> alarm outlet side of the retard chamber of the sprinkler system. <br /> Testing: Accomplished by opening the inspector's end-of-line test valve.Allow time to compensate for system or control retard. <br /> NOTE:Method 2 is not applicable for remote station service use,if there is an unsupervised shut-off valve between the alarm check valve and the PSI 0. <br /> Wet System With Excess Pressure <br /> Connect PS 10 into alarm port piping extending from alarm check valve.Retard provisions are not required. Insure that no unsupervised shut-off valves <br /> are present between the alarm check valve and the PSI 0. <br /> Testing: Accomplished by opening the water by-pass test valve or the inspector's end-of-line test valve.When using end-of-line test,allow time for <br /> excess pressure to bleed off. <br /> Dry System <br /> Connect PS 10 into alarm port piping that extends from the intermediate chamber of the alarm check valve. Install on the outlet side of the in-line check <br /> valve of the alarm port piping. Insure that no unsupervised shut-off valves are present between the alarm check valve and the PS 10. <br /> Testing:Accomplished by opening the water by-pass test valve. <br /> NOTE: The above tests may also activate any other circuit closer or water motor gongs that are present on the system. <br /> Dimensions Switch Clamping Plate Terminal <br /> Fig I Fig 2 <br /> z.s7 <br /> SCREWS <br /> ADJUSTMENT [72.971 <br /> KNOB ® <br /> 4.22 <br /> [107,17.19] <br /> 1/2"NPT 11 <br /> 44 o71�e <br /> 2.48 1.60 <br /> 162.871 [40.641 <br /> 3.78 3.20 IhOOl <br /> 195.891 [81.281 bd <br /> NOTE:To prevent leakage,apply Teflon tape sealant to male threads only. A WA R N I N G <br /> DWG#930-1 <br /> An uninsulated section of a single conductor should not be looped around the <br /> terminal and serve as two separate connections. The wire must be severed, <br /> thereby providing supervision of the connection in the event that the wire <br /> becomes dislodged from under the terminal. <br /> Potter Electric Signal Company, LLC St. Louis, MO Phone: 800-325-3936 www.pottersignal.com <br /> 5400928-REV E 2/20 PAGE 2 OF 4 <br />