Grounding Instructions; Extension Cords; Operating Controls - Jet JDP-20EVS-110 Operating Instructions And Parts Manual

6.2 GROUNDING INSTRUCTIONS

This tool must be grounded. In the event of a
malfunction or breakdown, grounding provides a
path of least resistance for electric current to
reduce the risk of electric shock. This tool is
equipped with an electric
equipment-grounding conductor. If the machine is
supplied with an electrical plug, the plug must be
inserted into an appropriate outlet that is properly
installed and grounded in accordance with all local
codes and ordinances.
Improper connection of the
equipment-grounding conductor can result in a
risk of electric shock. Check with a qualified
electrician or service person if you are in doubt
as to whether the outlet is properly grounded.
Do not modify the plug provided with the tool –
if it will not fit the outlet, have a proper outlet
installed by a qualified electrician.
The conductor with insulation having an outer
surface that is green with or without yellow stripes
is the equipment-grounding conductor. If repair or
replacement of the electric cord or plug is
necessary, do not connect
grounding conductor to a live terminal.
Repair or replace damaged
immediately.
If the drill press is to be hard-wired to a panel,
make sure a disconnect is available for the
operator. During hard-wiring of the machine, make
sure the fuses have been removed or the breakers
have been tripped in the circuit to which the drill
press will be connected. ALWAYS FOLLOW
PROPER LOCK-OUT/TAG-OUT PROCEDURES.
Model JDP-20EVST-230 (3-Phase) is pre-wired for
230 volt only. The machine can also be run on 1-
Phase power by hooking up the ground, L1 and L2
wires, as explained below.
Model JDP-20EVS-460 (3-Phase) is pre-wired for
460 volt only.
To wire the drill press:
If using a power cord, strip back the cord until
about 3 to 4 inches of the lead wires are exposed.
Slide a grommet onto the cord to be installed later
in electrical box hole, to prevent stress to power
cord.
1. Bring the lead wires through hole in machine's
electrical box and connect as follows (refer to
Figure 6-1):
2. If your incoming power is single phase,
connect the two leads to L1 and L2, and the
green ground wire to the grounding screw.
3. If your incoming power is three phase,
connect the three leads to L1, L2 and L3, and
the green ground wire to the grounding screw.
cord having an
the equipment-
or worn cord
9
Make sure incoming current matches power
requirements of the drill. When machine is
connected properly, spindle turns clockwise in a
conventional drilling rotation. If spindle does not
turn clockwise, disconnect drill from power supply
and reverse any two of the three power leads
(except green ground wire).
Figure 6-1: shows three-phase connection

6.3 Extension cords

The use of extension cords is discouraged; try to
position equipment within reach of power source. If
an extension cord becomes necessary, be sure it 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 1 shows recommended size to use
depending on cord length and nameplate ampere
rating. If in doubt, use the next heavier gauge. The
smaller the gauge number, the heavier the cord.
Ampere Total length of
Volts
Rating cord in feet
120 25
Not
More
More 240 50
Than
Than
0 6 18
6 10 18
10 12 16
12 16 14
Table 1: extension cord recommendations

7.0 Operating controls

The front panel (Figure 7-1) contains all the
controls required to operate the drill press. The
A.C. inverter in the electrical box does not require
any programming, it is pre-programmed from the
factory. Do not attempt to change inverter
settings. Use only the controls on the front panel.
If you suspect a problem with the inverter or its
settings, contact JET technical service at 1-800-
274-6848.
50 100 150
100 200 300
AWG
16 16 14
16 14 12
16 14 12
Not
12
Recommended