ADC AD-410 Service Manual

ADC AD-410 Service Manual Manual pdf 76 page image

7 2FILTER / REGULATOR1. Filter Maintenancea. To remove filter element ...Twist the filter bowl 1/8 turn clockwise (CW).Then pull the bowl down to expose the filterelement. To remove the filter element, unscrewthe baffle (this will allow element removal).b. To clean filter element ...spring and transmits force from the adjustment screw to the spring. Regulators use simple wire coil springsfor controlling the downstream regulator pressure. The bonnet houses the adjustment spring and is used tohelp retain the diaphragm. The diaphragm moves up when the downstream pressure reaches its presetpressure level, which in turn closes the valve. A self-relieving regulator is designed to automatically relieveoverpressure in the secondary side of the regulator.NOTE: THIS SELF-RELIEVING FEATURE IS NOT DESIGNED TO BLEED THE DOWN-STREAM PRESSURE.Dryer must be provided with a clean, dry, regulated 80 PSI (+/- 10 PSI) air supply (equivalentvolume - 9 cfh).The regulator should be set at 80 PSI (+/- 10 PSI). To set pressure, pull the adjusting knob up and either turnthe knob clockwise (CW) to increase the pressure or counterclockwise (CCW) to decrease the pressure.The filter element can be cleaned with soap and water.NOTE: When replacing the filter element bowl care must betaken to ensure that the O-ring does not get pinched.2. Regulator OperationThe adjustment knob simply acts upon a spring rest located on thespring and directly compresses the spring as it is adjusted. A non-rising low torque adjustment screw is used on this type of filter andregulator. The upper spring rest is located on top of the regulatorI. FILTER and REGULATOR ASSEMBLYThe purpose of the filter is to remove bulk liquids and solid particles from the compressed air stream. The filterelement provides mechanical separation of solids. Centrifugal force inside the filter bowl separates bulk liquidsand larger solid particles.The filter consists of a louver which causes a centrifugal spinning action to separate contaminants. A filter whichmechanically separates contaminants is also present. The filter bowl collects the contaminants and a baffleprevents turbulence from picking up contaminants at the bottom of the bowl and returning them to the air stream.