Farr HD8625 - Illustration 2.H.4: Opening Tong Door

2.20
hD8625 8-
5
/
8
” 35K Tong
Technical Manual
Making A Connection (Continued)
e) Graspthetongdoorhandleandpullthedoortoopen(SeeIllustration2.H.4).Sinceyourequipmentisequippedwithasafety
door,openingthedoorswillinhibitrotationofthecageplate.
IllustratIon 2.H.4: oPenIng tong Door
f) Manuallyengagethethreadsofthetubingconnectionbeingmadeup.Ensurethreadsarenotcross-threaded.
g) Movethetongontothepipeabovethetubingjoint.Usetheliftcylindertoensurethetongjawsareatthecorrectlocationabove
theconnectionjoint.
h) Firmlyclosethetongdooragainstthelatchpost.
i) Beginrotationwiththetonginhighgearandthetongmotorsettohighspeed(highspeed/lowtorque).SeeSection2.G.2to
setthetongmotortohighspeed,andSection2.G.3toproperlysetthetongtohighgear.Donotshiftgearswhilethetongis
rotating.
seTup & operaTion
SHIFTING TONG WHILE ROTATING THE MOTOR AND CAGE PLATE MAY RESULT IN
CATASTROPHIC GEAR TRAIN FAILURE