GE GEH-5304A - Manual (Page 6)

GEH-5304A
6
Brushes should not remain in contact with the commutator during prolonged storage because corrosion may
occur and later result in flat spots on the commutator. Release the brush springs and lift the brushes when
stored for a period of more than six months.
All exposed machined steel parts are slushed with a rust preventative before shipment. These surfaces
should be examined carefully for signs of rust and moisture, and reslushed if necessary. Once started, rust
will continue if the surface is reslushed without first removing all rust and moisture. Rust may be removed
by careful use of fine abrasive paper. Slushing compound can be removed by use of a suitable solvent such
as mineral spirits.
Mineral spirits are flammable and moderately toxic. The usual precautions for
handling chemicals of this type must be observed. These include:
1. Avoid excessive contact with skin.
2. Use in well ventilated areas.
3. Take necessary precautions to prevent fire or explosion hazards.
Extreme care must be exercised in removing rust on shaft extensions near shaft seals, since it is difficult, and
sometimes impossible, to remove rust from these surfaces without damaging or deforming them.
Burrs or bumps on other machined surfaces should be carefully removed by using a fine file or scraper.
Machines in storage should be inspected, have the insulation resistance checked at frequent and regular in-
tervals (refer to Insulation Resistance section), and a log kept of pertinent data.
When stored, it is suggested that the armature be rotated every three months to
prevent loss of grease protection on the bearings and races. Loss of grease
protection causes rust.
B. Handling
Complete motors or generators can be lifted by using hooks or slings in the lifting lugs of the unit. The lift-
ing lugs are designed to safely carry the weight of the individual machine. DO NOT lift the machine with
the shaft extensions.
Motor generator sets or units with heavy attachments such as gear boxes or
pumps must not be lifted by using the lifting lugs of the individual machines.
Motor generator set bases have lifting holes, to be used with spreader bars or hooks. Care must be taken in
handling to avoid twisting bases.