Hardi MARRO TWIN FORCE 1000 Instruction Book

56 GB 16 04FAULTMax. revolutions cannot beobtainedNoisy fan transmissionFormation of foam in oiltankFan speed will not stay atadjusted levelFan r.p.m. control does notstart upOil leaks from pump/motorshaft seal (seal pressedout)PROBABLE CAUSETractor P.T.O. speed is lowerthan 540 r.p.m. (reading failureon tractometer)Feed pressure is too lowMax. fan r.p.m. is not adjustedcorrectly (models with bowdencable adjustment only)Pump/motor is wornWrong oil quality (foam)Feed pressure too lowOil filter clogged (vacummeterindicator in red area)Pump/motor is wornWrong oil qualityMixture of hydraulic oil andother quality (e.g. universal oil)Oil change interval not keptLeak on the pump suction lineNo signal from speed sensor atthe fanBad connectionsFuse blownDrain hoses from motor/pumphousing is blockedToo much pressure in pump/motor housing (pump/motorworn)CONTROL/REMEDYCheck tractorís P.T.O. r.p.m.Check tractometerAdjust feed pressure to correct settingAdjust the max. fan r.p.m.Get transmission checked by your HARDIdealerChange oil to correct qualityAdjust feed pressureChange oil filterGet the fan transmission checked by yourHARDI dealerChange the oil to correct qualityChange the oil to correct qualityChange the oil to fresh, clean oil of correctqualityCheck hydraulic pump suction line for leaksCheck the wire connection between sensorand actuator for damagesCheck the wire connection between sensorand actuator for damagesCheck power supply and fuseCheck the drain hose(s) for bendings, dam-ages, and proper attachmentGet the transmission checked by your HARDIdealerHyHyHyHyHydrdrdrdrdraulic faulic faulic faulic faulic fan tran tran tran tran transmissionansmissionansmissionansmissionansmission