Preheating Unit - MTU 8V4000Mx4 Operating Instructions Manual

7.16.7 Preheating unit

HotstartPreheating unit
1 Plastic cap (drain)
2 On/Off switch
3 Plastic cap (inlet)
Number of
cylinders
8 V
Function
The preheating unit heats up the engine coolant. The circulating pump (8) ensures the circulation of the pre-
heated coolant through the engine.
The flow heater (5) incorporates a heating element. When the coolant temperature has reached the value of
the thermostat setting (7), the thermostat switches off the preheating unit via contactors.
In the event of excessive coolant temperature, the temperature limiter of the thermostat (7) opens the con-
trol loop. The preheating unit is switched off.
The system is reset manually after the fault has been eliminated.
4 Shut-off valve
5 Continuous flow heater
6 Vent valve
Rated voltage / frequency
230 V / 50 Hz
400 V / 50 Hz
230 V / 60 Hz
440 V / 60 Hz
7 Thermostat
8 Circulating pump
Heating output kW
9
9
9
9
MS150109/01E 2015-11 | Task Description | 241