NOTE : Depending o n t he c ontaminan t being c ollected, it is ad vised t o w ear t he ap propriate Pe rsonal Pr otection Equipmen t when h andling d ir ty fi lters! NOTE : Discard u sed fi lter s i n accordance w ith all Fe deral, Stat e an d Lo cal c ode s an d regulations. Pl ea se help protec t the e nvironment!
11.1.3 Drain Valve: Periodically open the drain valve attached below the tank to drain the liquid build-up in the air tank.
11.1.4 Inspect and clean diaphragm valves. A thorough cleaning normally rectifies operational problems with valves; however any worn or damaged parts are to be replaced. Use the following procedure to inspect and repair valves:
11.1.4.1 Main Diaphragm
a. Switch off air supply and drain the system. b. Unscrew the main diaphragm cover bolts and remove the valve cover. c. Inspect the spring and diaphragm for dust and damage. Remove dust with
water and replace damaged parts with diaphragm repair kits for 1” or 1.5” valves. d. Replace valve cover and valve cover bolts.
11.1.4.2 Solenoid Diaphragm
a. Switch off air supply and drain the system. b. Unscrew the bonnet bolts and remove the bonnet. c. Inspect the diaphragm for dust and damage. Remove dust with water and
replace damaged parts with diaphragm repair kit for 1” or 1.5” valves.
d. Replace the valve bonnet and valve bonnet bolts.
11.1.4.3 Solenoid Coil
a. Switch off air supply and drain system. b. Apply proper voltage to the coil and listen for a pronounced “Click” as the
pole moves.
c. If a pronounced “Click” occurs and the valve does not function follow
instructions for replacing the main diaphragm and solenoid diaphragm. d. If the “Click” is not heard, replace the solenoid.
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