Weber Rescue Systems SPS 270 E-FORCE 2 - Hydraulic Supply

4.2Hydraulicsupply

Thebaerytoolsarepoweredbya28VDCmotor.Whenthetoolisswitchedon,themotor
idles. Only when the control lever is operated the motor start to run at a higher speed.

Thehydraulicpressureisgeneratedbyahigh-pressurehydraulicpump(inthepumpingunit).
Thepumpisanswashplateaxialpistonpumpwithfourpistons.Thepressureoperatesdirectly
ontheworkingcylinder,makingconneconlinesunnecessary.

Thevolumeofoilforoperaonistakenfromanaccumulator.Thismeanstheenrehydraulic
systemiscompletelyclosedandvoidofair.Anypossiblevolumeexpansionduetoheatis
balanced by the accumulator.

Allbaery-powereddevicesshoulduseaspecialhydraulicoilforrescueequipment
inaccordancewithWN4841751.Normallytheoildoesnothavetobechanged,but,ifthis
becomesnecessary,itcanbechangedonlybyserviceengineersat
WEBERRESCUESystems.


Thecompletehydraulicsystemisdesignedasaclosedcircuitandmust
thereforebecompletelyfreeofair.Forthisreason,donotaempt
tocarryoutrepairsonthedrive,toensurethatnoaircanenterthesystem!
