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<br />., <br /> <br />iO. Wire adequate c:IectricaHc lighting fixtures. to electric motor of exhaust unit. etc. <br /> <br />! I, DRAFT GAUGE SEtnNG (DRY TYPE BOOmS ONLY) <br />On d.1' type booths with arrestor exhaust only. calibrate the dn1ft gauge. With exhaust <br />unit still running, note the height of tile oil column (in inches of water) on the draft <br />gauge. Marie this point with a piece of tape to indicate the pressure with clean arrestor <br />pads. <br /> <br />Take pieces of cardboard and panially cover the arrestor pads in checker board fashion to <br />simulate clogged filters, Add sufficient pieces of cardboard until the surface velocity <br />drO?S to the minimwn allowable 100 feet per minute (air speed measured by a <br />velometer), Note the reading on the draft gauge a.,d marlc: with tape. This is the point <br />(pres:.-ure) at wbich to change the lIITC3tor pads. <br /> <br />Upon removal of all cardboard, the pressure should return to its original point on the <br />draft gauge 11laJ'k.ed with tape. <br /> <br />12. The paint spray booth is now ready for operation. <br />