35 Owner’s Manual
120V GENERATOR SAFETY AND OPERATION
GENERAL SAFETY INFORMATION
1. Be extremely careful if operating equipment with generator in rain or snow.
2. The generator must be properly grounded.
3. Keep all safety guards and drive shields in position and tightly secured while equipment is operating.
4. Hot engine parts, moving drive parts and generator output all can seriously injure the operator. The
operator must use caution and remain alert when using this equipment.
5. Do not wear neckties, loose articles of clothing or anything else that can be caught in moving parts.
6. Be sure generator is well ventilated for maximum performance and life.
7. Only qualified electrical technicians should be allowed to service (install, maintain, repair or replace
parts) the generator, and only factory approved repair parts should be used in it.
8. Do not work on this generator when fatigued.
9. Use extreme caution when working on electrical components. High generator output voltage can cause
serious injury or death.
10. Keep generator and area around it clean. Remove any material that can create slippery conditions such
as grease, water, ice and snow. Remove any oily rags or other flammable material from the area.
11. Keep a fire extinguisher near the generator. Extinguishers rated ABC by the NFPA are appropriate for this
use. Consult your local fire department if you have questions regarding fire extinguisher ratings. Keep
extinguisher properly maintained and be familiar with its proper use.
12. Do not allow anyone to operate this equipment without proper instruction.
13. Avoid touching live terminals or receptacles.
MAINTENANCE
The main components of the generator are: field frame, field coils, armature, brushes, brush holder assem-
bly, brackets, armature and generator cooling fan.
1. BRUSHES - Under ordinary circumstances, brushes will operate for thousands of hours without requir-
ing replacement. They should be inspected after the first 1000 hours of operation, and after every 500
hours of operation thereafter. Remove brushes one at a time, and check for length. Be sure that each
moves freely in the brush holder. Brushes should be replaced when worn down to 3/8 in. Always replace
brushes in complete sets, never singly. When replaceing brushes, be careful to reconnect the lead wire
properly. Poor contact or “skipping” between brush and slip ring can be caused by oil and grit, flint or
other hard contaminant substances on the brushes, or by the brush not being properly shaped to fit the
slip rings. Remedy these defects by cleaning the rings and brushes and then fitting the brushes to the
slip ring curvature. Place #00 sandpaper under the brushes with the abrasive side to the brushes, and
work it back and forth until the brushes are the same shape as the slip-rings.
2. SLIP RINGS - The continuous copper rings located at the end of the armature are the power collector
rings or “slip-rings”. For proper generator output, the surface of these slip rings must have a highly
polished finish. Under sustained use, it is advisable to check and occasionally polish the ring surfaces
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