Operation
34 MMG75D-100D Operating Manual 33701 C
4. After the unit shuts down, move the Control Power switch to OFF (O).
Note: For extended storage time, disconnect the battery. See the engine operator’s manual for extended storage
requirements.
EMERGENCY STOP SWITCH
The unit is equipped with one emergency stop switch. For location of the emergency
stop switch, see Component Locations. The red button is clearly labeled “EMER-
GENCY STOP.” The switch can be accessed and activated with all doors closed and
locked.
Activate the emergency stop switch by pushing the 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
emergency stop fault will be displayed on the control panel. The switch will remain
closed until it is pulled out.
Figure 3-10. Emergency
Stop Switch
Equipment Damage. The emergency stop switch is not to be used to power down the unit
under normal operating circumstances. Doing so will result in equipment damage. (000246)
ECU OVERRIDE SWITCH
The ECU override switch is located inside the control box. This toggle switch powers
up the ECU without having to start the engine. Use the ECU override switch to turn
the ECU off. If the unit needs to be shut down immediately, use the emergency stop
switch. See Emergency Stop Switch for additional information.
DO NOT start the engine with the ECU override switch on. Doing so will
damage the ECU.
Figure 3-11. ECU Override
Switch
TOWING THE UNIT
Once the engine is shut down, follow these steps to prepare the unit for towing.
1. Use the tongue jack to raise or lower the trailer onto the hitch of the towing vehicle. Lock the hitch coupling
and attach the safety chains or cables to the vehicle. Release the jack locking pin and rotate the jack into the
travel position. Make sure the locking pin snaps into place.
Note: A film of grease on the coupler will extend coupler life and eliminate squeaking. Wipe the coupler clean and
apply fresh grease each time the unit is towed.
2. To ensure proper operation of the jacks, lube the grease fittings located on the leveling jacks. See Jack
Maintenance. For maintenance interval information, see Basic Maintenance Schedule.
3. Connect trailer wiring to the tow vehicle. Check for proper operation of the directional and brake lights.
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