MMD Equipment 400S-6B1 - Manual (Page 61)

7. Storage of the Unit
7-1
7.1 Preparation for Long-term Storage
When the unit is left unused or not operated longer than half a year (6 months), store it at the dry
place where no dust exists after the following treatments have been done to it.
Put the unit in a temporary cabin if it is stored outside. Avoid leaving the unit outside with a
sheet cover directly on the paint for a long time, or this will cause rust to the unit.
Perform the following treatments at least once every three months.
<Procedure>
① Discharge existing lubricant from the engine oil pan. Pour new lubricant in the engine to clean
its inside. After running it for a while, drain it again.
② Spread lubricant on each moving part.
③ Completely charge the battery and disconnect grounding wires. Remove the battery from the
unit, if possible, and store it in a dry place. (Charge the battery at least once every month.)
④ Discharge coolant and fuel from the unit.
⑤ Seal air-intake port of engine and other openings like the muffler with a vinyl sheet, packing
tape, etc., to prevent moisture and dust from getting in the unit.
⑥ Measure the insulation resistance of the generator, and make sure that it is more than 1MΩ.
(See 5.5.3)
⑦ Be sure to repair any trouble and maintain the unit so that it will be ready for the next
operation.