Marathon MAGNUM ROUTER Betreibershandbuch PDF herunterladen (Seite 35)

Note: When the voltage selector switch is in position for 480/277V 3Ø, voltage at the two GFCI receptacles is 139

volts and the voltage at the three twist-lock receptacles is 240/139 volts. Magnum Power Products LLC does not

recommend using the receptacles in the 480V position without a buck transformer. When the voltage selector switch

is in position for 208/120V 3Ø, voltage at the three twist-lock receptacles and the two GFCI receptacles is 208/120 volts.

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 connection lugs, the optional

cam lock receptacles, and the generator. Once the connections have been made to

the connection lugs or the optional cam lock receptacles, 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

and the optional cam lock receptacles if any of the following items occur while the unit

is running:

1. Overload of the generator circuits to the connection lugs or the optional

cam lock receptacles (208/120V only).

2. The door covering the connection lugs or the optional cam lock receptacles 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 connection lugs and the optional

cam lock receptacles only. The control panel receptacles have power even if the main

circuit breaker is in the OFF (O) position. To disconnect power to these receptacles,

use the individual circuit breakers located near each receptacle.

REMOTE START TERMINAL BLOCK

The remote start terminal block provides a connection for installation of a remote start

switch which will allow the unit to be started by a remote dry-contact closure switch.

For location of the remote start terminal block, refer to “Main Control Panel Features”

on page 16.

Before entering Auto mode, verify that the contacts on any remote switch linked to the

unit are OPEN. If the contacts on a remote switch are closed, the engine will crank

and start when Auto mode is entered. Attach the switch leads to the two unused

terminals on the unit’s remote start terminal block. For additional information, refer to

“Auto (Remote) Starting of the Unit” on page 33.

TRANSFER SWITCH

The generator neutral is bonded to ground when shipped from the factory. The bonding

plate will need to be removed when the generator is used as a standby power supply.

Installation should be in compliance with the National Electrical Code (NEC), state and local

regulations.

When the generator is used as a standby power supply, it must be equipped with a transfer switch which isolates it

from the utility’s distribution system. A transfer switch is designed to transfer electrical loads from the normal power

source (utility) to the emergency power source (generator) when normal voltage falls below a prescribed level. The

transfer switch automatically returns the load back to the normal source when power is restored back to operating

levels.

On/I

Off/O

00452

Remote Start

Switch Terminals

00231

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