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Section 7 - Options & Accessories
VISCOUS FAN CLUTCH OPTION
The viscous (cooling) fan clutch option allows the engine cooling fan to engage at lower speeds and disengage at
higher speeds, increasing cooling system efficiency. The cooling fan will engage at full speed when the coolant
temperature rises. When the fan is operating at full speed, it will switch to a slower speed when the coolant temperature
drops. There will be an audible difference when the engine cooling fan switches speeds. Depending on unit model,
the temperature ranges vary between 170°F and 200°F (77°C and 93°C).
GENERATOR CAM LOCK CONNECTIONS OPTION
The unit may be equipped with cam lock connections, located below the receptacles. These receptacles provide
connection points for the attachment of external loads to the generator. A large decal on the inside of the connection
lug door details the proper connections for selected voltages.
Only qualified service personnel may install, operate and maintain this equipment.
Failure to follow proper installation requirements could result in death, serious injury,
Before any connections are made to the generator, make sure that the main circuit
breaker and the Control Power switch are OFF (O) and the negative (-) battery cable
is disconnected. Potentially lethal voltages may be present at the generator connec-
IMPROPER OR INCORRECT CONNECTIONS TO A BUILDING'S ELECTRICAL SYSTEM
CAN CAUSE POTENTIALLY LETHAL VOLTAGE TO BACKFEED INTO UTILITY LINES.
THIS MAY RESULT IN INJURY OR ELECTROCUTION TO UTILITY WORKERS NEARBY.
MAKE SURE THE GENERATOR IS SUPPLYING POWER TO AN ISOLATED OBJECT
OR BUILDING THAT IS NOT CONNECTED TO ANY UTILITY LINES.
Connections should be made by plugging power cables equipped with series 16 taper nose 400A/600V cam lock
plugs into the cam lock receptacles. Secure the connection by rotating the plug a 1/2 turn to the right.
N (Neutral)
G (Ground)
33701 C
and damage to equipment or property. (000182)
L1
Black
L2
Red
L3
Blue
White
Green
Figure 7-15. Cam Lock Connections
MMG75D-100D Operating Manual
WARNING
WARNING
tion lugs.
DANGER
01894
55
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