Jet J-1600R, Инструкция по эксплуатации и каталог запасных частей

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15
6.4
Electrical Connections
Electrical set-up should be
performed only by a licensed electrician who is
familiar with national and local electrical codes.
This machine must be properly grounded to
help prevent electrical shock and possible fatal
injury.
Model J-1600R radial drills are tested before
shipping for all functions and circuits under
electrical power specified for the machine and
motors. The only hook-up requirement should be
for correct connection to an appropriate cutout on
an appropriate service branch.
Where the following instructions do not agree with
local electrical codes and procedures, the
applicable codes and procedures should be
followed, exclusively.
Wiring diagram
A wiring diagram for the drill press is found inside
the door of the electrical cabinet. A similar diagram
is shown in back of this manual. This diagram is for
reference by your licensed installing or servicing
electrician.
All three motors on the J-1600R are 3-phase
motors of the same voltage value. All control
circuits are 110 volt circuits. The motor’s circuit is
NOT fused
. Thus, fuses for each leg of the 3-
phase service branch
must be supplied by the
installing electrician.
If a service disconnect with
a fuse for each leg of the 3-phase branch is not
supplied, then none of the motors are protected
from electrical faults.
In addition to using a licensed electrician for
connection to the drill press service branch, the
servicing of components and circuits inside the
control box should be serviced only by a qualified
electrician. This includes fuse replacement, if
required. If any of these fuses, upon replacement,
should continue to fail at short service intervals, the
electrician should be asked to check all machine
components for excessive loads, short circuits or
other failures.
Electrical branch service
The machine is wired for either a 230V or 460V, 3-
phase service branch. The cable supplying the drill
press will be tagged with the voltage at which the
machine was tested and corresponding to the
customer's order.
If the tag has been lost, it will be necessary for you
to open the electrical cabinet on the rear of the drill
press and examine the connections on the
transformer found inside the box. The transformer
can be connected to either a 230 or 460 volt
source and its taps are labeled for voltage. By
locating the source tap on the transformer you will
be able to determine the branch voltage required.
A service disconnect is recommended. The use of
fuses or circuit breakers for each of the voltage
supply wires is required. Use fuses or circuit
breakers which are appropriate to the voltage for
the motor system delivered.
A positive cut-out/lock-out lever or rocker switch
should be located on the outside of the service
disconnect to allow the machine operator to
disconnect from the branch circuit when working
with tooling on the machine.
It is recommended that the
230 volt
Drill Press be
connected to a dedicated 25 amp circuit with a 25
amp circuit breaker or time delay fuse. Connect the
460 volt
drill press to a dedicated, 15 amp circuit
with 15 amp circuit breaker or time delay fuse.
Local codes take precedence over recommen-
dations.
Connecting branch to drill press
1. Disconnect service branch to machine by
moving lever or rocker switch on cutout box to
OFF.
2. Connect the green wire (or green with white
trace) to the branch ground.
3. Connect the remaining three wires in the cable
(labeled R, S and T) to the three power lines in
the branch.
4. Turn power to the machine ON at the cutout
box.
5. Turn coolant switch (See Figure 10) to ON
position.
Make sure there is coolant
in flood coolant system before operating
pump. Failure to comply may cause
damage to pump.
6. Observe rotation through glass atop pump.
The shaft should be rotating in direction of
arrow cast into pump assembly. If shaft is
rotating wrong direction, the power leads need
to be switched. Correct as follows:
7. Disconnect power to machine by turning it off
at cutout box.
8. Reverse
any two
of the power lead
connections, R, S or T.
9. Repeat steps 4, 5, and 6, above, and you
should observe pump shaft turning in proper
direction. Electrical service to machine is now
complete.