Nilfisk-ALTO FLOORTEC R 870 Service Manual

Contents

Nilfisk-ALTO FLOORTEC R 870 Service Manual Manual pdf 104 page image

Engine System - LPG104Service Manual – Floortec R 870Engine System - LPGFunctional DescriptionThe engine system generates electric current for allmachine functionsThe assembly consists of an internal combustion en-gine and dynamotor, which are both connected to themain crankshaftThe engine is a single-cylinder air-cooled LPG typeThe engine start-up is made by the dynamotor towhich it is connectedThe dynamotor acts as a starter, using the batteryonly for the time necessary to start the engine At alater stage, the running engine supplies the power tothe dynamotor to generate the current and to powerthe electrical systems of the machine The surpluscurrent is used to charge the batteriesThe engine speed is fixed, 2,750 rpm, to grant a con-stant current to the electrical systemThe LPG tank is fastened to the relevant holder in therear side of the machine and connected to the powersupply system with a hose and a double safety valveWhen turning the ignition key, the safety solenoidvalve opens, the liquid gas passes through the filterin the solenoid valve, thus reaching the pressure re-ducerThe IMPCO T60-A-NN-2 two-phase pressure reducerlowers the gas pressure, which then reaches the car-burettorThe LPG system is protected against any overpres-sure by a relief valve which activates at 27 atm (400PSI) The fuel reserve warning light turns on whenthe sensor in the power supply system detects a pres-sure lower than 1 1 barFor safety reasons, if the engine is not started (igni-tion key to “II”) within 2/3 seconds after turning onthe control panel (ignition key to “I”), the safety sole-noid valve automatically closes the gas power supplyThe engine is equipped with an oil level sensor (OilAlert), which purpose is to avoid damages caused byan insufficient oil quantity in the oil pan. Before theoil level goes below the safety limit, the system (OilAlert) automatically stops the engine If the enginestops and do not restart, check the engine oil levelbefore doing any other troubleshooting procedureWiring DiagramKEYCIRCUIT FUSE (F4)IGNITIONKEY (SW1)EMERGENCYPUSH-BUTTON (SW0)MACHINE ONRELAY (K4)LPG SAFETYTIMER RELAY (KT1)DIODE(D3)LPG SAFETYSOLENOID VALVE (EV1)ENGINE STARTELECTROMAGNETICSWITCH (ES2)ENGINESPARK PLUG (SPK)ENGINEFRAME (FR)OILALERTP200140