2. Inspecting essential
During periodic inspections, please abide by the following essentials.
(1) Select a clean and dry place.
(2) When disassembling, taking notes of the order of disassembled parts is
necessary. Put the screws and washers into a prepared empty box.
(3) When disassembling or assembling parts such as bracket, strike at it slightly with
a wood hammer. If striking with a metal hammer, the bracket may be broken.
(4) Don’t damage the parts during operation. Make the stator coil and bearing far
away from water, dust or sand, especially from being damaged.
(5) It’s necessary to clean and check after finishing disassembling. If find parts lack or
damaged, replenish or replace at once.
(6) Wipe the coil with dry cloth or soft brush instead of hard material or gasoline,
petroleum and other solvent.
(7) Dry the coil when the insulating resistance is too low. Heat the coil to 80℃-90℃
until the resistance is more than 1MΩ.
(8) Check if the bolts are loose and tighten them.
(9) Please refer to the fifth item: Inspection and maintenance of bearing.
(10) When the paint has discolored or peeled off, antirust treatment or repaint is
necessary.
(11) Tighten the terminals securely. The pontes must be insulated completely with
insulating rubberized fabric.
(12) After assembling, check carefully for any residual parts and if the screws are
loosen. Before trial operation, rotate the shaft with hands, check for any abnormality.
(13) Select a place away from moisture, dust, alkaline or other harmful gas for storing
motor. Smear anticorrosive oil on the ends of the shaft and wrap with oil paper or
membrane, etc.
3. Usage and maintenance of commutator
Commutator has four check windows for checking, maintaining commutator and
replacing electric brush. The seat has four equi-spaced magnetic poles with coil made of
F copper wire soaked with Grade F insulating paint. The stator parts and the neutral
position of electric brush have been adjusted, the users can’t disassemble or adjust it
unauthorized.
(1) Check the armature rotation for flexibility.
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