Magnum MLT4000S — Electrical System Lockout
Maintenance · Electrical compartment
For the Magnum MLT4000S, from the Magnum operator's manual.
Applies to: Magnum MLT4000S, Generac GN-220 engine
Before you start
- Wait 30 seconds after disconnecting solar panels before continuing service. Residual electrical charge may still be present.
- Solar panel electrical connections can carry an electrical charge during daylight. Do not disconnect the solar panels from the chassis if exposed to direct sunlight.
- Do not remove the battery covers near an open flame or other ignition source.
Procedure
- With all four jacks properly deployed, level the unit.
- Properly configure the solar panels in the stowed position.
- Set the timer control module to Off and the Gen Power switch to Off.
- Remove the two solar panel electrical connections from the plugs on the rear side of the chassis.
- Raise the solar panel tilt frame to 45° using the Panel Angle switch.
- Remove the service pin from the 45° Operation position on the actuator lockout bracket.
- Raise the tilt frame to the 90° position by hand and insert the service pin in the 90° Service Only position.
- Remove the six screws securing both battery bank covers and remove the covers.
- Disconnect the negative (-) battery cable from the corresponding terminal on BOTH rear batteries.
Full service-parts list: Magnum MLT4000S →
Source: Magnum operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.