Farr HD8625 - Page 37

Technical Manual
hD8625 8-
5
/
8
” 35K Tong
2.21
seTup & operaTion
Making A Connection (Continued):
j) Pushthemotorcontrolvalvetowardthetongtorotatethecageplateinthemake-updirection.
IllustratIon 2.H.5: motor Control - make-uP
k) PushtherotationcontrolhandletowardthecentreofthetonguptothestoponcethetongjawscamontothetubingThisthreads
theconnectiontogetherathighspeed.Asthejointbecomesfullymadeuptheincreasingtorquedemandwillstallthemotor,and
displayedtorquewillincrease.
l) Stoprotation,andsetmotortolowspeedandshifttolowgear(lowspeed/hightorque-SeeSection2.G.2forinstructionsfor
settingmotortolowspeed,andSection2.G.3forshiftingtolowgear).Thiswillenablethetongtoproduceadequatetorquefor
makingupthejointtospecification.
m) Pushtherotationcontrolhandleallthewayintocompletetheconnectionatlowspeed/hightorque.Observethetorquegauge
-stoprotationwhenthespecifiedmake-uptorqueisreached.Reversetherotationcontrolvalvetoreleasethetongjawsfrom
thetubing(seeIllustration2.H.6).
IllustratIon 2.H.6: motor Control - releasIng jaws