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 r emoved
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 excessi ve con t act wit h skin.
2. Use in well venti lated areas.
3. Take n ecessary precautions to prevent f ire or explosion hazards.
Extreme care must be exercised in r emoving rust on shaft extensions near shaft seals, sin ce it is difficult, an d
sometimes impossible, to remove r ust fr om these surfaces without damaging or defor min g 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 (ref e r t o Insulati on Resi st ance section), an d a log kept of pertin ent data.
When stored, it is suggested that the armature b e rotat ed every th ree mon th s t o
prevent loss of grease protection on the bearings and races. Loss of grease
protection causes rust.
B. Handling
Complete motor s or generator s can be lifted by using hooks or slings in th e lifting lugs of the unit. Th e lift-
ing lugs are designed to safely carry the weight of the individual machin e. DO NOT lift the machine with
the shaft extension s.
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 h ooks. Care must be taken in
han dlin g to avoid twisting bases.