3. To locate burned out point, move probe to left and right along filament to determine point where tester needle swings abruptly. [.1 irl or ill "0'7/ 5 [VJ SEL266 Filament Repair REPAIR EQUIPMENT 1. Conductive silver composition (Dupont No. 4817 or equivalent) Ruler, 30 cm (11.8 in) long Drawing pen Heat gun Alcohol Cloth wweww REPAIRING PROCEDURE 1. Wipe broken heat wire and its surrounding area clean with a cloth dampened in alcohol. 2. Apply a small amount of conductive silver composition to tip of drawing pen. Shake silver composition container before use. 3. Place ruler on glass along broken line. Deposit conductive silver composition on break with drawing pen. Slightly overlap existing heat wire on both sides [preferably 5 mm (0.20 in)] of the break. E 3 ~. n E E. _ a m Brzak Hemm l l' _,_.,_,_ Ruler Unit mm in.) Drawing Den 3840 4. After repair has been completed, check re- paired wire for continuity. This check should be conducted 10 minutes after silver composi. tion is deposited. Do not touch repaired area while test is being con ducted. 7 Repaired pom: l % l1] , j sELorzp 5. Apply a constant stream of hot air directly to the repaired area for approximately 20 minutes with a heat gun. A minimum distance of 3 cm (1.2 in) should be kept between repaired area and hot air outlet. li a heat gun is not available, let the repaired area dry for 24 hours. { Hepalred paint l i Heat gun SELDlJD EL 56