Specific Safety Rules; Electrical - KNOVA KN 7053 Manual

GENERAL SAFETY RULES
• USE ONLY RECOMMENDED ACCESSORIES listed in
this manual or addendums. Use of accessories that are not
listed may cause the risk of personal injury. Instructions
for safe use of accessories are included with the accessory.

SPECIFIC SAFETY RULES

• FIRMLY BOLT THE GRINDER TO A WORK BENCH
OR LEG STAND at approximately hip height.
• NEVER reach to pick up a workpiece, a piece of scrap,
or anything else that is in or near the grinding path
of the wheel.
• AVOID AWKWARD OPERATIONS AND HAND
POSITIONS where a sudden slip could cause your hand
to move into the wheel. ALWAYS make sure you have
good balance.
• DO NOT TURN THE MOTOR SWITCH ON AND OFF
RAPIDLY. This could cause the wheel to loosen and could
create a hazard. Should this ever occur, stand clear and
allow the wheel to come to a complete stop. Disconnect
your grinder from the power supply and securely retighten
the wheel nut.
• USE ONLY FLANGES furnished with this bench grinder.
• IF ANY PART OF THIS GRINDER IS MISSING or should
break, bend, or fail in any way, or should any electrical
component fail to perform properly, shut off the power
switch, remove the machine plug from the power source
and have damaged, missing, or failed parts replaced
before resuming operation.
• DO NOT OVERTIGHTEN THE WHEEL NUT. Excessive
tightening can cause the wheel to crack during operation.
• ALWAYS USE THE GRINDER'S WHEEL GUARDS
AND SPARK SHIELDS.
• INSPECT GRINDING WHEEL for visible defects.
Check the wheel for fissures and cracks, and test for
normal operation prior to use. Replace cracked wheel
immediately.

ELECTRICAL

EXTENSION CORDS
Use only 3-wire extension cords that have 3-prong grounding
plugs and 3-pole receptacles that accept the tool's plug.
When using a power tool at a considerable distance from the
power source, use an extension cord heavy enough to carry
the current that the tool will draw. An undersized extension
cord will cause a drop in line voltage, resulting in a loss of
power and causing the motor to overheat. Use the chart
provided below to determine the minimum wire size required
in an extension cord. Only round jacketed cords listed by
Underwriter's Laboratories (UL) should be used.
**Ampere rating (on tool data plate)
0-2.0 2.1-3.4
Cord Length Wire Size (A.W.G.)
25' 16 16
50' 16 16
100' 16 16
**Used on 12 gauge - 20 amp circuit.
NOTE: AWG = American Wire Gauge
3.5-5.0 5.1-7.0 7.1-12.0 12.1-16.0
16 16 14
16 14 14
14 12 10
• DOUBLE CHECK ALL SETUPS. Make sure blade is tight
and not making contact with saw or workpiece before
connecting to power supply.
• ADJUST distance between wheel and work rest to
maintain 1/16 in. or less separation as the diameter of the
wheel decreases with use. The value of separation used
in the marking is to be the separation recommended by
the manufacturer but shall not be more than 1/8 in.
• ALWAYS EASE THE WORKPIECE AGAINST THE
ABRASIVE WHEEL when starting to grind. A harsh
impact can break the wheel. Use light pressure when
starting to grind; too much pressure on a cold wheel
can cause the wheel to crack.
• RISK OF INJURY DUE TO ACCIDENTAL STARTING.
Do not use in an area where children may be present.
• NEVER START THE GRINDER when the wheel is in
contact with the workpiece.
• SECURE WORK. Always hold workpiece firmly against
the work rest.
• DO NOT USE THE BENCH GRINDER if the flange nut
or clamp nut is missing or if the spindle shaft is bent.
• FREQUENTLY clean grinding dust from beneath grinder.
• SECURE LONG HAIR so it is above shoulder level to
prevent entanglement in any rotating parts.
• STAY ALERT AND EXERCISE CONTROL. Watch what
you are doing and use common sense. Do NOT operate
tool when you are tired. Do NOT rush.
• DO NOT TOUCH the cut material until it cools or you
can be burned.
• IF THE POWER SUPPLY CORD IS DAMAGED, it must
be replaced only by the manufacturer or by an authorized
service center to avoid risk.
• SAVE THESE INSTRUCTIONS. Refer to them frequently
and use to instruct other users. If you loan someone
this tool, loan them these instructions also.
When working with the product outdoors, use an extension
cord that is designed for outside use. This is indicated by the
letters "W-A" or "W" on the cord's jacket.
Before using an extension cord, inspect it for loose or
exposed wires and cut or worn insulation.
WARNING
working area. Position the cord so that it will not get
caught on lumber, tools or other obstructions while
you are working with a power tool. Failure to do so
can result in serious personal injury.
WARNING
If damaged replace immediately. Never use tool with
14
a damaged cord since touching the damaged area
could cause electrical shock resulting in serious injury.
12
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3
Keep the extension cord clear of the
Check extension cords before each use.