39
EMERGENCY STOP SWITCH
The generator is equipped with one “EMERGENCY STOP” switch,
located on the rear corner of the unit next to the control panel door.
The switch is clearly labeled with “EMERGENCY STOP” and is red.
The switch can be accessed and activated with all doors closed and
locked.
Activate the “EMERGENCY STOP” switch by pushing the red button
in until it locks down. This will trip the main circuit breaker which will
open the contact disconnecting the load to the connection lugs. This
will also open the fuel circuit, shutting down the engine. The “Emer-
gency Stop” fault will be displayed on the LCD. The switch will remain
closed until it is pulled out.
Use the “EMERGENCY STOP” switch only when the generator must be shut down
immediately. For any other shut down, refer to
“Shutting Down The Generator” on page 29
.
MAIN CIRCUIT BREAKER
The main circuit breaker is located on the main control panel. When the breaker is in
the “OFF/O” position, power is interrupted between the customer connection lugs,
optional cam lock connectors and the generator. Once the connections have been made
to the connection lugs and the generator has been started and allowed to reach normal
operating temperature, the breaker may be switched to the “ON/I” position.
The main circuit breaker will be tripped, disconnecting power to the connection lugs if
any of the following items occur while the unit is running:
1. Overload of the generator circuits to the connection lugs (208/120V only).
2. The door covering the customer connection lugs is opened.
3. If the “EMERGENCY STOP” switch is activated.
Make sure any problems that cause the main circuit breaker to trip are corrected before returning the switch to the
“ON/I” position.
WARNING
The main circuit breaker interrupts power to the customer connection lugs and
optional cam lock connectors only! The customer convenience outlets have power
even if the main circuit breaker is in the “OFF/O” position. To disconnect power to
the convenience outlets, use the individual circuit breakers located near each outlet.
VOLTAGE REGULATION
The electronic voltage regulator controls the output of the generator by regulating the current into the exciter field.
The regulator has three screwdriver adjustable potentiometers that may be adjusted for voltage, stability and voltage
roll-off (U/F). The voltage regulator on the unit is adjusted before shipment from the factory. Contact Magnum Power
Products LLC for additional information before attempting to adjust the voltage regulator.
Note:
For units equipped with a Marathon D digital voltage regulator, please refer to the Marathon operating
manual provided with the unit.
ON I
OFF O
