Farr KT5500 - Extreme Cold Weather Operation Procedures

KT5500 5-
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” Tong & CLInCHER® BaCKup
SECTIon ConTEnTS
2.24
TECHnICaL ManuaL
4. GENERAL COMMENTS
a) Positionrotarygearincontactwithbothidlergearswhenbreakingoutjointsorcollarswherehightorquesarerequired.
b) Whenmaking-upintegral(shouldered)joints,itisessentialtomakeupthelastturnofthethreadsinlowgear.Thisreduces
thetendencyofaninstantstoporasuddenincreaseintorque,whichinducesextremelyhighstressesonthegeartrain.
c) DO NOT employ the “snap break” method of breaking-out joints when pulling a string. By definition, the “snap break”
methodisaprocedureusedbysomeoperatorstobreakoutconnections,accomplishedbyleavingslackinthe“jaw-pipe”
engagement,andthenquicklypullingthethrottlevalvecontrolleverallowingthetongtosnapintoitsloadedorhightorque
condition.Althoughthismethodisveryeffectiveinbreakingoutjoints,theextremelyhighstressplacedonthegeartrain
frequentlycausesgearbreakage.
G. EXTREME COLD WEATHER OPERATION PROCEDURES
1) Consultthepowerunitengineoperator’smanualforallcoldweatheroperatingproceduresandprecautions.
2) Selectgearandbearinglubricantsthatarecompatiblewithexpectedclimaticconditions.
3) Selecthydraulicfluidthatiscompatiblewithexpectedclimaticconditions.
4) Allowhydraulicfluidtocirculateforapproximately20minutesafterstartingthepowerunit,priortoactivatingthebypassvalve
toallowfluidtocirculatetotong.Ifthepowerunitisequippedwithanoiltemperaturegauge,ensurethatthefluidhasreached
operatingtemperatureasspecifiedbyhydraulicfluiddatasheet.
5) Allowforadequatedryingofmoisture(priortolubricating)whencleaningtongpartsincoldweather.
SETup & opERaTIon
THE “SNAP-BREAK’ METHOD IS HAZARDOUS TO PERSONNEL AND EQUIPMENT