Novatek 195.5501 Operation And Maintenance Manual - page 6
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Check the R/A gear drive by rotation the output shaft to determine any roughness in the bearing or gear
meshing during rotation. If roughness is indicated, inspect the tool per the corrective action section of this
manual.
Periodic Inspections and Maintenance Requirements
Electric motor arcing between the commutator and brushes indicated poor contact due to dirt accumulation, worn brushes or
worn commutator.
A. Clear out any dust or debris from the inside of the motor case by means of compressed air jet through the cover
case cooling slots.
B. If poor operation continues, contact Novatek or an authorized Novatek distributor.
If roughness of the R/A gear is detected, please contact Novatek or an authorized Novatek distributor.
IN USE
A. Always use the correct abrasive discs.
B. Experimentation with various disc materials and abrasive materials may be beneficial in terms of productions.
C. The electric motor switch should be in the “off” position when not in use.
D. After proper power has been supplied the switch should be turned to the “on” position.
E. The drive motor is capable of various rotational speeds. To determine optimal rotational speeds, refer to the
instructions provided with the abrasives.
F. No attempt should be made to increase or decrease the grinders rotational speed setting recommended for each
individual abrasive. Always follow manufacturer’s recommendations. Failure to do so could result in premature
wear of failure of the abrasive disc.
SAFETY AT WORK
The following safety precautions should be practiced when operating the Shrouded R/A tool.
•
During grinding operations, the user is required to use safety and protective equipment as directed by OSHA,
Occupational Safety and Health Administration.
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Eye and face protection equipment is required to meet OSHA standards. Casual eyewear IS NOT a substitute for
industrial safety eye protection.
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The tool should be operated using both gloved hands to firmly position the pad against the work surface.
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Never operate the tool in a manor where there is the possibility of physical contact with the disc or debris from the
cleaning process.
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Always start the tool by depressing the throttle lever with a gloved hand.
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Never under any circumstances operate the tool by locking the throttle lever open by taping or other means.
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Never operate the disc over corners or sharp protrusions which can cause premature disc failure and possible
flying debris.
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For electric drive motors it is recommended to install a fault current switch (30MA) in extremely moist conditions or
if the machine is covered with conductive dust.
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The spindle lock on the electric drive motors should not be used until the rotor has come to a complete stop.
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Always use the vacuum system when operating the tool in a grinding operation to remove and dispose of debris, in
the specified manner.
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Always change pre-filters as specified (or more often) when operating on concrete to effectively contain dust and
associate hazardous debris.
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It shall be the tool owner’s responsibility to insure that the tool is maintained in a safe operating condition.
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If the tool produces unusual sounds or vibrates excessively, shut down immediately for repair or return for factory
inspection.
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Exposure to excessive vibrations or repetitive work practices may be harmful. The use of gloves will help damped
vibrations during prolong use.
•
Due to fire hazards, do not use gasoline or volatile thinners to flush or clean the tool in any way.
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Maintenance and repair records should be kept on all grinders.
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Frequency and nature of repair may reveal unsafe operational conditions.
SECTION III
CLEANING