Komatsu D475A-5E0 Operation & Maintenance Manual page 345

STARTING IN COLD AREAS
EXTERNAL POWER SOURCE TYPE PREHEATER, HANDLING
This preheater is used as a starting aid when it is difficult to start the engine because of the cold temperature. It is
used even when the ambient temperature is above -20°C (-4°F) in seasons where the temperature goes down to
-20°C (-4°F).
Using an external power source (single phase, AC200 to 240V) to heat up the engine coolant and the oil in the
engine oil pan and power train oil pan will make it easier to start the engine.
PROCEDURE FOR SETTING UP EXTERNAL POWER SOURCE
1. When using this preheater, it is necessary to provide the following external power source. For details, see
"ESTABLISHING POWER SUPPLY (PAGE 6-8)".
2. It is necessary to make locally the cable used to bring the electricity above to the power input installed to the
machine from the external power source.
For details of manufacturing procedure, see "MANUFACTURING EXTERNAL POWER SOURCE INPUT
CABLE (PAGE 6-7)".
3. The external power source input cable is the electric cable to bring the electricity from the local AC power supply
to the input socket on the machine. Connect it as shown in the diagram below to operate the preheater.
Note 1: The electric leakage breaker is installed to prevent danger of electrocution if the electrical supply leaks
in the machine.
Note 2: The reason for connecting the ground cable to the ground is the same as for Note. 1.
Note 3: This is to prevent any drop in voltage.
6 - 6
ATTACHMENTS, OPTIONS