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For easy adjustment of the V -belt drive connection between the blower and motor, the <br />motor will be mounted on an adjustable motor mounting base. The blower will be fitted <br />with a dry type filter/silencer at the air intake. Each blower discharge will be fitted with a <br />check valve, and a flexible rubber discharge coupling. <br />For purposes of determining the blower performance and/or diffuser condition, a pressure <br />relief valve and pressure gauge will be mounted in the air manifold. <br />N. Central Control Panel <br />A central control system installed within a weatherproof enclosure will be provided. The <br />enclosure will be rated NEMA 4X -F Fiberglass. The electrical controls will consist of <br />magnetic starters, program timers and switches necessary to automatically control all <br />electrical devices and/or motors on the sewage treatment system. <br />M -O -A selector switches and magnetic starters in conjunction with the program timer will <br />control the blower/motor. The program timers will have the capability to operate the <br />treatment system when required as determined by the variation in the daily flow rate. <br />Properly sized circuit breakers and fuses will protect all electrical equipment and circuitry. <br />The control system will be designed to operate all duplex or standby equipment. The <br />enclosure will be wired for 230 volt, 1 phase incoming power. The control panel will be <br />mounted at a remote location. <br />O. Access Ladder, Service Walkways, and Service Handrails <br />A service walkway will be provided over the flow equalization tank and sludge holding <br />tank to service the plant equipment. Grating panels will each consist of one-piece skid <br />resistant steel plank. All grating panels will be constructed of 18 gauge, galvanized steel <br />sheet. Each grating panel has a standard 6" or 9" surface width and a 2 1/2 " rib depth. <br />Each panel will be supported to insure a safe uniform load carrying capacity" of 80 pounds <br />per square foot. <br />A two handrail system be provided around the service grating areas described above. <br />Service Handrails are supplied with mounting flanges for bolting into place. The rails and <br />posts are fabricated from 1-1/4" diameter schedule 40 carbon steel pipe, painted black. <br />P. Cathodic Protection <br />For cathodic protection for tanks partially or fully buried, six (6), 17 -pound magnesium <br />anode packages will be supplied. Anodes should be buried by the field contractor, <br />adjacent to the sides of the vessel and securely connected thereto by heavy copper wire <br />in good electrical contact with the connector lugs on the steel vessel. <br />P6018 West Lane MHP 5 <br />