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Fuse Replacement
Fuses
are
located
in
the
Power
Connector Assembly
the
spring
tabs
located
on
the
top
and
bottom
Connector Assembly and remove it to change the fuses.
(T3. 15A/250V for 120V , T1.6A/250V for 230V). (Fig. 6)
NOTICE
Please make sure to replace fuses with same rated 'Slow
Blow' or 'Time Delay' type fuses. Failure to replace with the
proper type fuse will result in continuous fuse failures or
damage to the unit and motor.
CAUTION
Fuses blow only when a short circuit or voltage spike on the
AC Iine occurs. If you are uncertain of the cause for a fuse
failing, send the unit to an authorized NAKANISHI service
shop for repair.
Maintenance Mode
This system incorporates a maintenance mode to check the function of the switches, display, foot pedal, motor, etc.
T o activate the Maintenance Mode press and hold the FiXpeed Switch
⑤
turn
the
Power
Switch
on.
Hold
the
buttons
activated the Speed Control Knob will switch between function checks and the function will be displayed in the Speed
Display. The check will be displayed in the following order from lowest speed setting "oP", "dP", "HL", "Pd" and "in"
T o release Maintenance Mode, turn the unit off and on again.
Function
Checks
are
as
follows
1) [oP] : Switch operation check.
Press the switch on the panel you wish to check and the light on the panel will light to indicate proper operation of the
switch .
2) [dP] : Display check
⑪
Press the Forward/Reverse Selector Switch
, and the lamps will light one by one to verify their normal operation. T o
cancel this test press the Forward/Reverse Selector Switch
3) [HL] : Motor Signal check (Hall IC check)
⑪
Press the Forward/Reverse Selector Switch
and the Speed Display
the
motor
slowly
by
hand
and
the
display
will
bottom to top. If any one of these three lines does not light, the sensor (Hall IC) in the motor is bad or the signal line in
the motor cord is cut. Please send the unit and motor for repair. T o cancel this check, press the Forward/Reverse
⑪
Selector Switch
again.
4) [Pd] : Foot Pedal check
⑪
Press the Forward/Reverse Selector Switch
, and the Speed Display
A~F) according to the degree of depression of the Foot Pedal
⑦
Reset Lamp
and depressing it fully extinguishes the lamp, If the Speed Display
⑦
theReset Lamp
does not light properly, the Foot Pedal
⑪
Reverse Selector Switch
again.
5) [in] : Initializing Function
⑪
Press the Forward/Reverse Selector Switch
and other settings will be reset to factory defaults.
Rotation Direction: FWD (Forward)
Motor Selector Switch: A
-1
Speed: 20,000min
rpm
Motor and Attachment Operation
1.Installation and Removal of Burs
Open
the
chuck
by
turning
the
Bur
Lock
position. The chuck is open and the bur can be removed. Install
the
new
bur
and
turn
the
Bur
Lock
Ring
in
Finally
turn
the
Bur
Lock
Ring
all
the
way
to
until it clicks. (Fig.7)
CAUTION
Never turn the Bur Lock Ring while the motor is rotating.
Turning the Bur Lock Ring with the motor rotating can cause
injury and damage to motor and attachment.
2.Cleaning and Replacement of the Chuck
1)Removal of the Chuck
Open
the
Bur
Lock
Ring
and
turn
the
chuck
until
you
can
remove
the
chuck.
Normally,
removed and replaced by hand; if it is too tight use the included
wrench to remove it as shown in the picture (Fig.8)
※
Occasionally, when using a large diameter bur at high torque,
the chuck may gradually tighten making it difficult to remove. In
this case align the spindle's wrench flats in the nose's slits and
use
the
provided
L wrench
to
hold
the
spindle.
Lock
Ring
and
turn
the
chuck
counterclockwise
provided chuck wrench to remove the chuck. (Fig. 9)
2)Cleaning the Chuck and Spindle
Remove and thoroughly clean the chuck and ID of the spindle to
maintain
accuracy.
Remove
the
chuck
and
clean
spindle ID at least once a week.
3)Installation and Adjustment of the Chuck
Apply a thin coating of oil to the chuck before installation.
Open the Bur Lock Ring, insert a dummy bur cr cutting tool into
the
chuck
and
then
turn
the
chuck
clockwise
stops. Next, turn the chuck back, counterclockwise, about 1/5 of a
turn
to
allow
the
bur
to
be
easily
released
open. Finally, turn the Bur Lock Ring until it clicks, Iocking the bur
in place. (Fig. 10)
※
〜
Chuck sizes range from 0.3mm
3.0mm in 0.1mm increments.
Also 2.35mm and 3.175mm (1/8") are available.
※
The chuck's clamping force can be adjusted as shown in Fig.
10,
if
the
bur
slips
or
the
bur
can
not
adjustments as shown above.
3.Disconnecting and Connecting the Motor Cord to the Motor
Removal
・
Turn the motor cord nut counterclockwise and remove the cord. Hold the motor nut only when disconnecting the
motor cord; do not pull on the motor cord.
Connecting
・
Carefully align the pins on the motor with the holes on the motor cord connector and gently push the motor cord
connector onto the motor.
・
Tighten the motor cord nut by turning clockwise until it is tight.
CAUTION
¥ Be very careful to push the motor cord connector straight into the motor. The motor pins can be bent
easily and cannot be bent back.
¥ Don't remove the motor cord unless necessary.
⑲
.
Depress
of
the
Power
⑫
⑬
and Motor Switch A
until
the
unit
'beeps'
(about
2
seconds).
With
maintenance
⑪
again.
⑧
will display one or two horizontal lines. Turn
show
one
line,
two
lines,
one
line,
two
lines,...smoothly
⑧
will display alphanumeric characters (0~9,
④
. Also depressing the foot pedal slightly lights the
⑧
does not change smoothly or
④
may be bad. T o cancel this check, press the Forward/
until a 'beep' is heard. The settings for rotation direction, Hand/Foot
LOCK
Ring
to
the
open
the
Lock
direction.
the
Lock
position
OPEN
counterclockwise
the
chuck
can
be
Open
the
Bur
with
the
the
chuck
and
by
hand
until
it
when
the
chuck
is
1.Turn until finger-tight
be
removed,
make
2.1/5Turn
Loosen
4.Removing the Handpiece from the Motor.
The Handpiece and Motor are screwed together at the rear of the
Handpiece.
wrench
to
counterclockwise and unscrew the Handpiece.
(Fig. 13)
Fig.6
CAUTION
To connect the Handpiece to the Motor, turn the Handpiece
clockwise and tighten firmly. If the drive connections do not
align properly, you will not be able to turn the attachment
more than two turns. If this happens, DO NOT FORCE.
Unscrew the attachment slightly and turn the bur by hand
until the drive connections align, and then screw the motor
and attachment together. (Fig. 14)
simultaneously and
mode
Attachment Stand
On
the
bottom
attachment
mounted. (Fig.15)
Attachment Holder
The
attachment
control
unit,
attachment
when
tighten the screw, Y ou can adjust the holder angle to suit your taste.
(Fig. 16)
from
top
to
Specifications
Control Unit
Model Number
Power Requirements
Weight
Dimensions
Motor Attachment
(1) T orque Type
Model Number
Speed
Max. Output
Max. T orque
Weight
Dimensions
Cord Length
Option
(1) Foot Pedal
Model Number
Weight
Troubleshooting
When trouble is found, please check the following prior to consulting your dealer.
Control Unit and Motor
Fig.7
Problem
Pilot Lamp
does not Light
Foot Pedal
Loosen
does not
Work
Error Code E0
Error Code
E1
Fig. 8
Loosen
Error Code
E2
・
Error Code
E3
Error Code
Fig. 9
E4
Error Code
E5
Error Code
E6
Can't Increase
Rotation Speed
Attachment
Problem
The Attachment
Fig. 10
does not turn with
the chuck closed
Attachment gets
hot during use
Vibration or Noise
during use
High Runout
Bur slips out
Motor Cord Nut
Fig. 11
Fig. 12
Hold
the
motor
body
and
attach
the
provided
the
rear
of
the
Handpiece.
Turn
the
pin
wrench
of
the
attachment
stand,
the
tools
necessary
maintenance
and
a
spare
chuck
(optional)
can
holder
can
be
mounted
on
the
right
side
of
giving
you
an
easy
plaoe
to
store
the
motor
not
in
use,
Insert
the
holder
into
the
slot
Attachment Stand
NE96
AC120/230V 50/60Hz
2.6kg
Attachment Holder
W175 x D230 x H98mm
(2) Compact Type
ENK-500T
-1
1,000 - 50,000min
(rpm)
200W
8.7cN¥m
251g
L164mm
1.5m
(2) Collet Chuck
FC-40
660g
Probable Cause
Power Plug is disconnected.
Insert the power plug correctly.
Fuse is Blown.
Replace
has blown is unknown, send for service.
Send for Service.
Power Switch is Bad.
Foot Pedal Connection is Loose.
Connect the foot pedal correctly.
Check to see if foot pedal operates normally in
If the foot pedal does not operate normally, replaced it or
maintenance mode (4) [Pd] : Foot Pedal Check.
send it for service.
Turn Power on again.
If the same Error Code appears, send for service.
If
system
Turn Power on again.
temporary overload, which is not a problem.
If system operates normally after replacing the motor and
If you have spare units, replace the
motor cord; the motor and/or motor cord may be shorted.
motor and motor cord and check
Send the motor and motor cord for service. If the same
Error Code still appears after replacing, send the system
operation.
for repair.
Motor cord is disconnected.
Connect the motor cord correctly.
If system operates normally after replacing the motor and
If you have spare units, replace the
motor cord; the motor and/or motor cord may be cut. Send
motor and motor cord and check
the motor and motor cord for service. If the same Error
operation.
Code still appears after replacing, send the system for
repair.
Motor cord is disconnected.
Connect the motor cord correctly.
Check to see if motor operates
If
any
normally in maintenance mode (3)
cord may be cut or the sensors in the motor may be bad,
[HL] : Motor Signal Check.
send for service.
Shut down the system and allow to
If the system operates normally, there is no problem. Check the
cool for 10 minutes and check
operating environment, storage location, etc for high temperatures.
operation again.
If the same Error Code appears frequently, send for service.
Turn Power on again and start and
If the system operates normally, there is no problem. If the
stop motor several times.
same Error Code appears, send for service.
Chuck is Open.
Lock the Bur Lock Ring fully.
Check to see if the bur can be lightly
If rotation is abnormal, send for service.
rotated by hand.
The Speed Control Knob is set low, for foot pedal
Set
the
Knob.
operation this sets the maximum motor speed.
Probable Cause
Bearings Contaminated or Seized.
Send for Service.
Bearings Contaminated.
Same as Above.
Same as Above.
Same as Above.
Bur is bent or damaged.
Replace the bur.
Contaminants in chuck or spindle.
Clean the chuck and spindle ID.
Chuck is worn.
Replace the chuck.
Bearings worn.
Send for Service.
Chuck is Loose.
Adjust the Chuck.
pin
Fig.13
Fig.14
for
be
Fig.15
the
and
and
Screw
Fig.16
Attachment Holder
Model Number
Z095 201
Weight
120g
Model Number
Z095 104
Weight
18g
Model Number
ENK-500C
-1
Speed
1,000-50,000 min
(rpm)
Max. Output
140W
Max. T orque
6 cN¥m
Weight
209g
Dimensions
L148mm
Cord Length
1.5m
Collet Chuck
¿0.3-¿3.0mm in 0.1mm increments
□□
(CHH-
)
¿2.35mm and ¿3.175mm (1/8")
Solution
it
with
the
specified
fuse.
If
the
reason
the
fuse
operates
normally,
the
Error
Code
is
due
to
problems
are
found
during
the
check,
the
motor
maximum
rotation
speed
with
the
Speed
Control
Solution
'11.05.003
a
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