Operator's Manual

1
g021765
Figure51
1.20cm(8inches)
Thisexibilityisoftenratedinmaterialsasaminimum
bendradius,whichistheradiusofthecircleformedifthe
materialorpipes,connectedtogether,werebenttoform
agiantcircle.Theminimumradiusofacirclemadewith
thepipeusedwiththismachineis36.6m(102ft).
•Entrypitch
Theentrypitchistheangleatwhichthemachine
enterstheground.Withthetracksonlevelground,the
stabilizersdown,andthestake-downplateontheground,
thedrillframeangleisabout15degreesora27%pitch.
Thispitchwillchangedependingontheslopeofthe
groundandotherfactorsofthejobsite.Youcanalso
reducethispitchabitbybuildingupthegroundunder
thestake-downplatebeforepositioningthemachine.
Youcandeterminetheactualpitchofthedrillframeby
placingthedrillbitandsondehousingontheframeand
thenusethereceivertodisplaythepitch.
Thesteeperyourentrypitchis,thedeeperyourborewill
havetobeduetothelimitationsofthepipeexibility.
Typicallyyouneedtoinsertthedrillandatleast1/3ofa
pipeintothegroundbeforeyoucanstartsteeringtoward
thebeginningoftheborepoint.Figure52,Figure53,
andthefollowingtableillustratetherelationshipbetween
entrypitchanddepth.
1
2
3
g021766
Figure52
1.26%pitch3.76cm(30inches)
2.3m(10ft)
2
3
g021767
1
Figure53
1.18%pitch3.53cm(21inches)
2.3m(10ft)
47