OnGrade Manual - Ditch Witch

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OnGrade Operator’s Manual Complete the Job - 49Chapter ContentsInspect Installation . . . . . . . . . . . . . . . . . . . . . . . . . 50Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Stow Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Complete the JobCMW
Complete the Job - 50Inspect InstallationOnGrade Operator’s ManualInspect InstallationAfter the product pipe is pulled back, clean out the pipe and inspect the installation.1. Use surveying rod and laser receiver to take distance measurement from laser plane to top of installedpipe at start and end pits. Ensure laser is set up exactly as it was during the bore.2. Tie a small rope to the correct size of foam cleanout pig. Ensure the rope is longer than the installedpipe and spool off enough rope at the pipe entrance to allow pig to pass easily through the pipe.3. Place the pig in the pipe and use a vacuum excavator at the other end of the installed pipe to pull pigthrough the pipe. If the pipe still has fluid or spoils in it, make a second pass with the pig.4. Pour a known quantity of water in the uphill end of the installed pipe. Place a bucket at the lower end tocatch the water that comes out.IMPORTANT:• If installed pipe has a flat grade or long run, this process could take several minutes.• If installed pipe has a low spot, add more water until water comes out the downhill end.5. Install grade beacon used for the bore into the grade trolley. See “Beacon Trolley” on page 45.6. Attach the rope to the connector on the front of the trolley.7. If a video camera will be used, connect camera. See “Camera/Video Recorder” on page 46.8. Begin pulling trolley through installed pipe.9. Take pitch readings at spots where depth readings were taken during pilot bore. If this is not possible,take readings at consistent distance increments (5-10’/1.5-3 m).NOTICE:• Stop trolley for 3-4 seconds before taking pitch readings to allow beacon pitch sensor to settle.• Use radios to allow tracker operator to communicate with the person pulling the trolley.10. Once trolley reaches other end of installed pipe, disconnect it from the rope. Stop the video recorder, ifused.11. Pull trolley back through the installed pipe by reeling in the cable.12. Transfer video and pitch information to computer.CMW
Page 1 and 2: OnGradeOperator’sManualCMW ® Iss
Page 3 and 4: Overview - 2Serial Number LocationO
Page 5 and 6: Overview - 4FCC Statement - Interna
Page 7 and 8: Foreword - 6OnGrade Operator’s Ma
Page 9 and 10: Contents - 8OnGrade Operator’s Ma
Page 11 and 12: Safety - 10GuidelinesOnGrade Operat
Page 13 and 14: Safety - 12Safety AlertsOnGrade Ope
Page 15 and 16: Controls - 14Grade PoleOnGrade Oper
Page 17 and 18: Controls - 16DetectorsOnGrade Opera
Page 19 and 20: Controls - 18OnGrade Operator’s M
Page 27 and 28: Conduct OnGrade Bore - 26OnGrade Pr
Page 29 and 30: Conduct OnGrade Bore - 28OnGrade Op
Page 31 and 32: Conduct OnGrade Bore - 30OnGrade Op
Page 33 and 34: Conduct OnGrade Bore - 32Extension
Page 35 and 36: Conduct OnGrade Bore - 34Take Readi
Page 37 and 38: Conduct OnGrade Bore - 36Drill-Thru
Page 39 and 40: Grade Boring Concepts - 38Theory of
Page 41 and 42: Grade Boring Concepts - 40OnGrade O
Page 43 and 44: Systems and Equipment - 42Downhole
Page 45 and 46: Systems and Equipment - 44OnGrade O
Page 47 and 48: Systems and Equipment - 46Camera/Vi
Page 49: Systems and Equipment - 48LiftOnGra
Page 53 and 54: Complete the Job - 52OnGrade Operat
Page 55 and 56: Service - 54General CareOnGrade Ope
Page 57 and 58: Service - 56Change BatteriesOnGrade
Page 59 and 60: Specifications - 58OnGrade Operator
Page 61 and 62: Warranty - 60OnGrade Operator’s M
Page 63: Warranty - 62OnGrade Operator’s M

OnGrade Manual - Ditch Witch

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