Full Product Manual

11
in Canada. The green-colored rigid ear, lug, and
the like, extending from the adapter must be
connected to a permanent ground such as a
properly grounded outlet box.
3. Grounded, cord-connected tools intended for
use on a supply circuit having a nominal rating
between 150 - 250 volts, inclusive:
This tool is intended for use on a circuit that has an
outlet that looks like the one illustrated in D, Figure
6-1. A grounding plug may be installed, that looks
like the plug illustrated in D; or the grinder may be
“hard-wired” to a panel, provided there is a
disconnect for the operator.
Make sure the tool is connected to an outlet having
the same configuration as the plug. No adapter is
available or should be used with this tool. If the tool
must be reconnected for use on a different type of
electric circuit, the reconnection should be made by
qualified service personnel; and after reconnection,
the tool should comply with all local codes and
ordinances.
6.2 Extension cords
The use of extension cords is discouraged. Try to
position equipment near the power source. If an
extension cord becomes necessary, use only
three-wire extension cords that have three-prong
grounding type plugs and three-prong receptacles
that accept the tool's plug. Replace or repair
damaged or worn cord immediately.
Make sure your extension cord is good condition,
and is heavy enough to carry the current your
product will draw. An undersized cord will cause a
drop in line voltage resulting in loss of power and
overheating.
Table 2 shows the correct size to use depending
on cord length and nameplate ampere rating. If in
doubt, use the next heavier gage. The smaller the
gage number (AWG), the heavier the cord.
Ampere
Rating
Volts
Total length of
cord in feet
More
Than
Not
More
Than
120
240
25
50
50
100
100
200
150
300
AWG
0 6 18 16 16 14
6 10 18 16 14 12
10 12 16 16 14 12
12 16 14 12
Not
Recommended
Extension Cord Recommendations
Table 2
6.3 Voltage conversion
To change voltage input to 230V:
1. Turn grinder over and remove base plate.
2. Rewire the leads according to the diagram in
sect. 13.0.
3. Remove existing plug from grinder cord and
attach a UL/CSA listed plug designed for 230V
power.
7.0 Operation
A bench grinder is designed for hand-grinding
operations such as sharpening chisels,
screwdrivers, drill bits, removing excess metal, and
smoothing and polishing metal surfaces.
The JIGM-8 with Multitool attachment offers
multiple working methods:
• Grinding wheel – A 36-grit wheel is provided,
and is effective when a considerable amount
of metal must be removed, or when obtaining
a smooth finish is not important. A finer grain
abrasive grinding wheel (not provided) can be
mounted for sharpening tools or grinding to
close size tolerances because it removes
metal more gradually for precision grinding
and achieves a smoother finish.
• Disc grinding – Versatile function, such as
dressing small castings and sharpening cutters
and tools, or squaring the ends of a workpiece.
An optional mitering table can be purchased
(see sect. 11.0) to support the workpiece and
facilitate angles.
• Belt and platen (horizontal or vertical position)
– Workpieces of any length can be worked on
the belt and platen.
• Contact wheel – Grinding, polishing and
sanding against belt and contact wheel offers
smooth sanding, removing material more
rapidly than conventional grinding wheels.
• “Free strapping” is grinding, sanding, or
polishing on the underside of belt, opposite the
platen, without a backing behind the belt. This
method is especially suitable for contour work.
Fine belt grades are recommended because of
the rapid material removal.
Always use approved safety
glasses or face shield while operating this tool.
Failure to comply may cause serious injury.
7.1 On/Off Switch
Pull paddle switch (A, Figure 7-1) to start grinder,
push to stop. The safety key (A
1
) can be removed
to prevent unauthorized use of the grinder. The
safety key must be inserted to restart the grinder.
When the stop button is
pushed, the wheels may take a few moments to
completely stop.
Note: After extended operation, the grinder
housing may be warm to the touch. This is not
abnormal.