Owner manual

ManualsBrandsJohnson Level & Tool Mfg. ManualsTools40-6770

Detector Usage Model No. 40-6770

1. Technical Specifications

Detecting accuracy Fine ±0.039" (±1mm)

Coarse ±0.098" (±2.5mm)

Turn-off time 5 minutes

Operating voltage DC9V

Size 6-3/4" x 3" x 1" (0.266 x 0.118 x 0.029mm)

Weight 0.55 Ibs (0.249 Kg)

Dust and rain resistant

Illuminated Screen

Multi-functional double sides display

Buzzer for recognizing location

3708H_Manuals 7/20/10 11:27 AM Page 1

Summary of content (6 pages)

PAGE 1
3708H_Manuals 7/20/10 11:27 AM Page 1 Detector Usage Model No. 40-6770 1. Technical Specifications Detecting accuracy Fine ±0.039" (±1mm) Coarse ±0.098" (±2.5mm) Turn-off time 5 minutes Operating voltage DC9V Size 6-3/4" x 3" x 1" (0.266 x 0.118 x 0.029mm) Weight 0.55 Ibs (0.
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3708H_Manuals 7/20/10 11:27 AM Page 2 2. Components (a) Structure 1. Display window 2. Level vial 3. Coarse/Fine detection button 4. Horn 5. Power button 6. Sound button 7. Back light button 8. Receiving window 9. Display window 10. Reference rabbet 11. Location hole 12. Threaded hole 13. Battery-box cap (b) Display 1. Power symbol 2. Low battery symbol 3. Coarse/Fine detection symbol 4. Sound symbol 5.
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708H_Manuals 7/20/10 11:27 AM Page 3 3. Operation Guide (a) Installation of battery • Open the battery door • Put the 9V battery into the battery-box. Please note the polarity. Then close the battery door. Note: Take the battery out if the instrument is not used for a long time. (b) Turn on/off • Press the power button. When Power symbol is displayed, the instrument is ready for coarse detection. • When low battery symbol is displayed, change the battery.
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3708H_Manuals 7/20/10 11:27 AM Page 4 (d) Detection 1. Coarse detection • Aim the receiving window at the rotating laser. Loosen the adjusting bolt and move the detector up and down to receive the laser signal transmitted by the rotating laser. • When the detector displays like Fig. (A), move the detector slightly down as indicated by the arrow. When it displays like Fig. (B), move it slightly up as indicated by the arrow. • When Fig. (C) is displayed, the detector is level with the rotating laser beam..
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3708H_Manuals 7/20/10 11:27 AM Page 5 2. Fine detection 1. power symbol 2. fine detection symbol • Press coarse/fine detection button. The detector is ready for fine detection. • Move the detector slightly up and down like the coarse detection procedure. • When the detector displays as shown in the figure, it is level with the laser beam. • Tighten the adjusting bolt and mark the position on the grade rod next to the rabbet. This mark will be the horizontal reference in the fine detection.
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3708H_Manuals 7/20/10 11:27 AM Page 6 (f) Turn-off timer • The detector will automatically turn off if it has not received a laser signal for 5 minutes (g) Back light system • Press the back light button which will illuminate the display window.