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<br />.' <br /> <br />lO. Wire adequate electrical. tc lighting fixtUres. to electric motor of exhaust un it. etc. <br /> <br />! 1, DRAFT GAUGE SETrrNG (DRY TYPE BOOmS ONLY) <br />On d:y type booths with illT'eStor exhaust onl)', calibrate the draft gauge. W:th exhaust <br />!mil 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 piecl:S of cardboard and partially cover the arrestor pads in checker board fashion to <br />simulate clogged filters. Add sufficient pieces of cardboard until the surface velocity <br />drops to the minimum allowable 100 feet per minute (air speed measured by a <br />velomcrer). Note the reading on the draft gauge a..,d marlc with tape. This is rhe point <br />(p~~re) at which to change the arr~tor pacb. <br /> <br />Upon removal of all cardboard, the pressure should return to its original point on the <br />draft gauge marked with tape. <br /> <br />12. The paint spray booth is now ready for operation. <br />