PRODUCT OVERVIEWTNV Operation Manual 25IndicatorsThe following indicators are located on a typicaloperator’s console.Figure 7Figure 8Pre-Heat - (Figure 7, (1)) - The pre-heat functionis automatically activated when the key switch isturned to the ON position. The indicator flashesfor several seconds and when it goes out you canturn the key switch to START.Heat - (Figure 8, (1)) - Note that on this type ofpanel you must turn the key to the HEAT position(Figure 8, (5)) to activate the inlet airheater(direct injection models) or glow plugs(indirect injection models). The indicator will flashfor several seconds when you turn the key toHEAT and when it goes out, you can turn the keyswitch to START.Battery - (Figure 7, (2)) or (Figure 8, (2)) - Thisindicator will come on if there is a problem in thecharging system. This indicator does not indicatewhether the battery is discharged. SeeTroubleshooting Chart on page 99.Engine Oil Pressure - (Figure 7, (3)) or(Figure 8, (3)) - This indicator will come on if theengine oil pressure is below or exceeds normallimits. See Troubleshooting Chart on page 99.Engine Coolant Temperature - (Figure 7, (4))or (Figure 8, (4)) - This indicator will come on ifthe engine coolant temperature exceeds normallimits. See Troubleshooting Chart on page 99.Auxiliary - (Figure 7, (5)) - Used for specialapplications.102020 40100180 2202506080030400 x100RPMVDOVDOPSI FC0 1 2 3 4 5bar80 1001200AUXMC-704HP-G40000024B(1)(2)(3)(4)(5)(1) (2)(3)(4)(5)0000025B