DENTSPLY CAVITRON 2001 Manual

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b52b-bI-
0
454407
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©’
Dentsply/
York
Division
DENTSPLY /CAVITRON
MODEL 2001"
ultrasonic dental unit
with automatic fine tuning.
INSTALLATION
AND
SERVICE MANUAL
DOMESTIC
and
EXPORT
MODELS

DENTSPLY /CAVITRON'
MODEL 2001
ultrasonic dental unit
with automatic fine tuning.
DOMESTIC and EXPORT models
(D Dentsply/ York Division
Dentsply International Inc., York Pennsylvania 17405
PRINTED IN U.S.A. NO. 3451 Rev. 6-82 7.56

DENTSPLY /CAVITRON'
MODEL 2001
ultrasonic dental unit
with automatic fine tuning.
DOMESTIC and EXPORT models
*CAVITRON, THRU-FLOW and 2001 are trademarks of Cavitron Division of Cooper Medical Devices Corporation, New York, N.Y.
Copyright” 1982 by Dentsply International Inc.
All rights reserved

Section
VI
VII
TABLE OF CONTENTS
Subject
FOREWORD.
SPECIFICATIONS
DESCRIPTION re
Generator and Water System .
Handpiece and Cable Assembly
“Thru Flow” Inserts
Foot Control
INSTALLATION
Electrical Requirements
Installation
Power Cable
Foot Control
Handpiece
“Thru Flow” Insert
POST-INSTALLATION CHECK
Electrical LL
Foot Control or Finger Switch Control
Water Flow and Adjustment
SERVICE AND REPAIR
ASSEMBLY AND DISASSEMBLY PROCEDURE
Unit Cover Disassembly
Chassis Removal V
Handpiece Retraction Reel Removal
Regulator and Solenoid Assembly Removal
PC Board Removal
TEST POINT VALUES . . . È
PARTS LIST
Page
mo
12
16
16
16
16
16
16
21, 24
28

Number
MOO BGN
=
8a, 8b
9a, 9b
10a, 10b
11
12
LIST OF FIGURES
Title
Unit Control Panel i
Handpiece and Retraction Reel Assembly.
Placing Insert into Handpiece
“Thru Flow” Insert Components
Rear Panel
Bottom Panel
Component Removal
Electrical Schematic (Finger Switch Handpiece) w/Test Point Locations
Electrical Schematic (Standard Handpiece) w/Test Point Locations
Wiring Diagram
Printed Circuit Parts Locations (Standard Handpiece ‘and Reel Units)
Printed Circuit Parts Locations (Finger Switch Handpiece Units)
Page
Y 0
Y
BW
18, 19
22, 23
25, 26
27
27

FOREWORD
The
Dentsply”
Cavitrom
2001”
Ultrasonic
Dental
Unitis
precision
engineered
and
manufactured.
Designed
for
use
in
prophylaxis
treatment,
periodontia
and
other
ares
of
operative
dentistry,
the
Unit
is
manufactured
by
the
Cavitron
Division
of
Cooper
Medical Devices
Corporation,
New
York,
NY
and
distributed
by
Dentsply
International
Inc.
Essentially,
the
Unit
operates
by
converting
ordinary
AC
house
current
into
25,000
Hz
current.
This
in
turn
is
converted
by
means
of
the
handpiece
and
insert
into
25,000
microscopically
small
mechanical
strokes
per
second.
These
rapid,
microscopic
strokes
are
then
transmitted
to
the
insert
tip.
Applied
with
a
water
spray
and
a
light
guiding
touch,
the
activiated
tip,
in
conjunction
with
the
bubbling
action
of
the
water,
rapidly
and
gently
dislodges
calculus
and
stain.
CAUTION
The Dentsply-Cavitron Unit should not be used for restorative dental
procedures involving the condensation of Amalgam.
PRECAUTIONS: No special maintenance is required for the Dentsply-Cavitron Ultrasonic Dental
Unit, but the following precautionary measures should be exercised:
a. Do not place the Unit on or next to a radiator or other heat source as this may damage the
electronic components.
b. Do not keep the Unit in a tightly confined space or corner. Keep it where a normal amount of
air will freely circulate on all sides of the cabinet.
c. The Unit is portable, but when carrying it from one place to another, handle it with care.
d. THE IMPORTANCE OF THE FOLLOWING INSTRUCTIONS OUTLINED IN THE DENTIST'S
INSTRUCTION MANUAL CANNOT BE OVEREMPHASIZED. IMPROPER ANGULATION OF THE
INSERT TIP TO THE TOOTH WILL DEFINITELY RESULT IN SUB-STANDARD PERFORMANCE OF
THIS PRECISION EQUIPMENT.
; WARNING
WE RECOMMEND THAT THE ULTRASONIC UNIT NOT BE USED IN CASES WHERE A PATIENT OR AN
OPERATOR OF THE UNIT HAS BEEN FITTED WITH A CARDIAC PACEMAKER.
For further information on this subject, we suggest you refer inquiries to Annals of the New York
Academy of Sciences, Vol. 167, Article 2, pages 515-1075, “Advances in Cardiac Pacemakers”,
U.S. Department of Health, Education and Welfare, “Electromagnetic Radiation Interference with
Cardiac Pacemakers”, and the Journal of the American Dental Association, Vol. 91, No. 6, Pages
1224-1229, “The Individual with a Pacemaker in the Dental Environment.”

ELECTRICAL
Voltage:
Current
Frequency:
WATER
Pressure:
Flow Rate:
DIMENSIONS
Generator
Handpiece Cable
Footswitch Cable
Linecord
Water Hose
WEIGHT
DENTSPLY=
CAVITRON®
MODEL
2001
SPECIFICATIONS
100V, 115V, 220V
& 240V
0.8 amps at 100V
& 115V
0.4 amps at 220-
& 240V
50/60 Hertz
30-60
PSI
(2.1
-
4.2
Kg/cm?)
OFF
position
(counterclockwise
360°)
-
25cc
max
ON
position
(clockwise
360°)
-
50cc
min
Height
4
in.
(10.1
cm)
Width
10-1/2
in.
(26.7cm)
Depth
10-1/2
in.
(26.7cm)
over
strain
relief
Length
with
reel
82
in.
(208cm)
Standard
Length
80
in.
(203cm)
Length
96
in.
(244cm)
Length
84
in.
(214cm)
Length
96
in.
(244cm)
11 Ibs. 7 oz. (5.2 Kg)

SECTION |
DESCRIPTION
COMPONENTS
The Unit has four major components: an electronic generator, a handpiece assembly
(retraction reel optional), a set of interchangeable inserts, and a foot (fingertip control
optional) control.
GENERATOR AND WATER SYSTEM
The electronic generator enclosed in the cabinet produces the power required for activating
the handpiece. The following controls are found on its control panel (Figure 1):
a.
Power Adjustment Dial (1) to switch the Unit on and off and to select the 1, 2, or 3 power
levels of operation.
Water Flow Adjustment Knob (2) for adjusting the volume of water permitted to flow from
the handpiece. The greater the water flow, the lower the water temperature; the lesser the
water flow, the higher the water temperature.
On-Off Pushbutton turns the Unit on.
On-Indicator Light (4) illuminates when the Unit is on.
Handpiece (5).
1 - Power Adjustment Dial 4 - On-Indicator Light
2 - Water Flow Adjustment Knob 5 - Handpiece
3 - On-Off Pushbutton
FIGURE 1. UNIT CONTROL PANEL
3

2. HANDPIECE AND CABLE ASSEMBLY
The Handpiece and Cable Assembly (Figure 2) consists of a handpiece which is the housing for
the interchangeable inserts, and a cable which can be optionally attached to a retraction reel.
a. The open end of the handpiece is designed to accept inserts of various tips (see Figure 3). To
change inserts, simply pull out one and place in another, making certain that it is fully
seated. WITH INSERT IN PLACE, HOLD HANDPIECE IN AN UPRIGHT POSITION. ACTIVATE
THE INSERT TO BLEED ANY AIR BUBBLES THAT MIGHT BE TRAPPED WITH THE HANDPIECE.
(With the finger switch handpiece, hold the switch “ON” until the water flows without
spurting.)
Standard Handpiece
with Reel
- Handpiece
- Cable
- Retraction Reel
- Connector
- Handpiece
- Cable
- Connector
- Handpiece
- Finger Switch
10 - Cable
11 - Connector
12 - Strain Relief
©
©
No
ur
PEN
Standard
Handpiece
without
Reel
Finger
Switch
Handpiece
FIGURE
2.
HANDPIECE
AND
RETRACTION
REEL
ASSEMBLY
4

4 1 - Insert
4 2 - Open End of Handpiece
到 3 - Handpiece
FIGURE 3. PLACING INSERT INTO HANDPIECE
CAUTION
If the insert does not readily snap into the handpiece moisten the “O" ring,
located immediately below the collar. (See Figure 4.) DO NOT FORCE into
place. On handpiece with the finger switch, twist the insert clockwise as it is
pushed into the handpiece.
을 b. The handpiece, with the insert in place, converts electrical power, supplied by the
generator, into microscopically small strokes which activate the insert tip. A continuous
flow of water is required to keep the handpiece cool. This same water, warmed within the
handpiece, is then delivered through the water outlet and sprayed by the activated tip.
C. The optional finger switch is located at the forward end of the handpiece and controls the
ON-OFF function of the handpiece. Flick the finger switch once and the handpiece instantly
delivers the selected power and water flow. Flick the finger switch again and the handpiece
is OFF.
Units with the finger switch will automatically shut OFF if the finger switch is actuated
with no insert in the handpiece. |
i
- Insert Tip
- Water Outlet
- Collar
- O-Ring
- Connecting Body
- Magnetostrictive Stack
OUBUWNr
FIGURE 4. “THRU-FLOW”® INSERT COMPONENTS
5

3. “THRU-FLOW” ° INSERTS
The unit is used with quick-change interchangeable inserts designed to provide ready access
to all areas of the mouth. The handpiece accepts all standard available DENTSPLY-CAVITRON
inserts.
“THRU-FLOW” INSERT COMPONENTS: The “Thru-Flow” insert is made up of the following
components:
a. Insert Tip (1).
b. Water outlet (2) for spraying preheated water at the activated tip. The insert's design
ultrasonically transports lavage water along the entire working length of the tip.
c. Collar (3).
d. 0-Ring (4) which acts as a water seal when the insert is placed into the open end of the
handpiece.
e. Connecting body (5) which transmits motion from the stack to the insert tip.
f. Magnetostrictive Stack (6) which converts electrical power supplied to the handpiece into
mechanical oscillations used to activate the insert tip.
FOOT CONTROL
The handpiece is operated by an on-off contact foot switch which functions as follows:
a. With the foot held down on foot contro! pedal, the handpiece is activated and water flows.
b. With foot removed from pedal, both handpiece and water flow are shut off.
A finger switch on the handpiece is available as an option for controlling the handpiece. See
“Handpiece and Cable Assembly” for description.

SECTION Il
INSTALLATION
ELECTRICAL REQUIREMENTS - U.S. ONLY.
A 3-prong type grounded wall outlet is required, supplying 115 volts, 50/60 Hertz AC current.
Grounding reliability can only be achieved when the unit is connected to an equivalent
receptacle marked “hospital only or hospital grade.” DO NOT REMOVE GROUND LUG FROM
PLUG.
INSTALLATION
On receipt of equipment, unpack carefully. Chech that the ON-OFF switch (Figure 1 Item 3) is in
the “OFF” (out) position and complete the installation.
POWER CABLE
On all units the power cable is already attached to the unit.
All 100-115 volt units contain a 3-prong plug on the end of the power cable. Units for
Scandinavian countries (NEMCO) contain a third wire. The plug on all other 220-240 volt units
around the world will contain two prongs.
Check that the ON-OFF Pushbutton is in the “OFF” (out) position, then insert plug into wall
outlet.
FOOT CONTROL
On units with a foot control, insert connector of foot control cable into 3-hole receptacle
(Figure 5 Item 1) on rear panel of cabinet. The 100-115 volt models with foot control have a 3-
pin plug. The 220 volt units for Scandinavia have a 3-pin plug. All other 220-240 volt units
around the world have a 2-pin plug.
1 - Foot Control Cable Receptacle
2 - Power Cable
3 - Rubber Foot
FIGURE 5. REAR PANEL — U.S. MODEL SHOWN
7

WATER SUPPLY
One end of the water supply hose is attached to the unit at the factory (see Figure 6). The
water supply to the unit should be limited to 30 psi minimum and 60 psi maximum pressure. It
is recommended that a manual shut-off be installed in the water line to the unit so the water
can be completely shut off when the office is unoccupied. Attaching the water hose from the
unit to this line is accomplished using an adapter suitable for the installation. NOTE: A
strainer is recommended for installation in the water supply to the unit. Immediately after the
adapter is connected to the line, flush the adapter fitting of any debris created by the
connection. With the adapter fitting flushed, connect the free end of the supply hose to the
adapter fitting. Test the connection to make sure it is tight. If incoming water pressure is above
60 psi install a water pressure regulator in the main water supply line.
1. Lock Lever
2. Receptacie J-4
3. Plug P-4
А
A
- Water Supply Hose
- 2 Amp Slo Blo Line Fuse
- Handpiece Cable Retraction 4
Reel
7 - Cover Mounting Screw
8 - Reel Mounting Screw
pu»
~“
A A O
5
|
FIGURE
6.
BOTTOM
PANEL
—
U.S.
MODELS
SHOWN
8

6.
ma #v_mmttt66&
HANDPIECE
The handpiece (standard or finger switch) and cable assembly is attached to the Unit at the
factory.
As an OPTION the standard handpiece and cable assembly is mounted on a retraction reel in
the Unit. Remove the handpiece from the holder and pull the hose to the desired position and
lock. There is a lock position every few inches as the handpiece is withdrawn from the Unit.
The handpiece cable can be extended approximately 7 feet.
NOTE
If hose does not lock, pull a slight amount, until hose is locked.
To retract the hose, give a slight tug and allow the handpiece to return to the Unit.
THRU-FLOW® INSERT
Lubricate “O” ring on insert (see Figure 4) with water to facilitate insertion into the handpiece.
Push the insert in with a clockwise motion.

SECTION III
POST-INSTALLATION CHECK 9
ELECTRICAL
Check to make sure that the Slo Blo fuse cap (see Figure 6 item 2) on the bottom of cabinet is
securely locked in place. Actuate the ON-OFF pushbutton to “ON”. The “ON” indicator will
light.
FOOT CONTROL OR FINGER SWITCH CONTROL
Place TF1-3 insert into handpiece. Set the Power Adjustment Dial at either 2 or 3, then check
the functioning of control as follows:
a. Step on foot control or flick the finger switch once. Insert should become activated and
water should flow from insert water outlet. If no water flows from water outlet, turn
Water Flow Adjustment Knob (see Figure 1) in a clockwise direction until water flow
begins. É
b. Release foot control or flick the finger switch again. Both handpiece operation and water
flow should stop.
WATER FLOW AND ADJUSTMENT o
The Water Adjustment Knob regulates the volume of water and therefore the temperature of the
water flowing from the insert Water outlet.
Adjusting Water Flow. With the Power Adjustment Dial set to either 1, 2, or 3, step on foot
control or flick finger switch and adjust the volume of water flowing from the handpiece water
outlet as follows:
a. To increase water flow, turn Water flow Adjustment Knob in a clockwise direction until the
desired rate of flow is obtained. At least 35cc of water per minute is needed to keep the
handpiece cool.
b. To decrease flow, turn Water Adjustment Knob in a counterclockwise direction until the
desired rate of flow is obtained.
c. Increasing the power level will cause the water in the handpiece to heat faster, while
reducing the power level will cause the water to heat at a slower rate.
NOTE
The operator should bleed any air from the handpiece that may become
trapped there during the changing of an insert. This will prevent handpiece
overheating. (Refer to “Instructions for Using Dentsply® -Cavitron® ©
Ultrasonic Dental Unit” - Page 8.)
10

CAUTIONS
In order to reduce bacteria that may have accumulated in the instrument
overnight, the water line should be flushed for a period of 2-5 minutes daily
prior
to use.
Whenever the insert tip is placed within the patient's mouth, the lip should be
retracted to prevent contact with the insert tip.
Inserts should be replaced after one year’s usage in order to maximize
cleaning efficiency and avoid breakage. Insert tips that have been bent,
scratched or dropped should be discarded immediately to avoid breakage.
11

SECTION IV
SERVICE AND REPAIR
The Dentsply-Cavitron Model 2001 Ultrasonic Dental Unit requires little or no service. If service
should be necessary, the following measures will eliminate most difficulties you may encounter.
Where more than one corrective measure is shown, follow the indicated sequence. If the
corrective measures fail, the unit should be returned to Dentsply International Inc.
SYMPTOMS CAUSES CORRECTIVE MEASURES
Water drip from hand-
piece when unit not
operating.
Water solenoid valve open.
(SV1)
Repair or replace solenoid valve.
Loud hum from
generator.
Air trapped in water regulator.
(WR1)
1. Tilt unit at different angles with handpiece
activated.
2. If problem persists, replace regulator.
High water pressure.
Install water pressure regulator on main water
supply line and reduce pressure to 60 psi.
Insert stops vibrating
when coming in
contact with tooth.
Insert malfunction.
Test with another insert. If test insert works
properly, original insert is damaged.
Insert not pushed in far enough
for automatic pick-up.
Check if insert seats in handpiece.
Malfunction of handpiece
assembly.
Check continuity of handpiece lines. Refer to
schematic, Figure 8 or 9 as applicable.
1. Connect ohmmeter between terminal, P4-1
and P4-4.
2. Connect ohmmeter between P4-5 and P4-4*
Flex handpiece line and check for
intermittent operation.
*If ohmmeter reading is not constant or not
reading, handpiece and cable assembly is
likely to be damaged and should be repaired
or replaced.
Loose wiring or defective solder
joint in unit wiring.
Visual check of all unit wiring.

SYMPTOMS
CAUSES
CORRECTIVE MEASURES
Insert fails to vibrate,
either intermittently or
at all times, or hand-
piece heats up.
Polarizing current too low, insert
fails to vibrate. Polarizing current
too high, handpiece heats up.
Measure polarizing current by disconnecting one
of the leads to SV1 and insert ammeter. Reading
should be 2.5 +0.30 Amps DC. If reading is not
within limits, check R14, R-37, K1.
Slo Blo Fuse F1 fails.
Short or failure within unit.
Disconnect push-on terminal from transformer to
rectifiers CR1 and CR2 (take care that disconnected
terminals do not short together or to chassis).
(a) If fuse continues to blow then short is from
transformer back such as: Transformer T2
check for short. Switch S1 - check switch
for short. Pilot Light L1 - check for short.
(b) If fuse does not blow, then disconnect remain-
ing push-on terminals to rectifier CR1 and
check:
Rectifiers CR1 and CR2 - check for shorts.
(c) If step (b) is completed without finding problem
leave rectifiers CR1, and CR2 disconnected,
and remove PC board and disconnect one
push-on connector to solenoid Valve and
check:
Capacitor C7 - check for shorts.
Capacitor C9 - check for shorts.
Check diode CR9 for short.
(e) If steps above are completed without finding
problem. Check transistors Q1 and Q2 for
shorts. Replace as required.
NOTE: Faults listed in (b), (c), (d), and (e) will
cause
the
auxiliary
fuses
F2,
F3
or
F4
to
blow
on the 220V and 240V models.
=
Slo Blo Fuse F1
good. No power to
circuitry. Thermal cut-
out built into trans-
former opens.
Unit is installed in a confined area
(such as a cabinet), or is too close
to heat source to insure proper air
circulation around unit.
Provide adequate air circulation around unit.
If installed in cabinet, drill holes in bottom or back
of cabinet for better air circulation.
No power to unit.
Faulty wall outlet or unit cord.
1. Check wall outlet and if faulty take necessary
corrective measures.
2. Check unit cord from unit to outlet. Replace if
damaaed.
Fuse Fi blown.
Replace fuse F1 or fuse assy.
Damaged ON/OFF switch.
Replace ON/OFF switch. (S1)
Continuous clicking
or no click at all when
stepping on foot
switch.
Damaged foot switch.
Check foot switch by removing foot control plug
from rear of the unit. If defective, repair or replace.
13

SYMPTOMS
CAUSES CORRECTIVE MEASURES
Continuous clicking or
no click at all when
flicking fingertip
control.
Damaged fingertip control.
Damaged electronic component.
1. Connect clip lead between C9+ and J1-14. If Unit
functions properly, replace fingertip control.
2. If step one (1) is completed without finding
problem, replace Q6.
Handpiece heats up.
Insufficient water to cool hand-
piece.
Turn water adjustment knob clockwise until hand-
piece runs cool.
Air trapped in handpiece.
When inserts are changed, hold the handpiece
in an upright position until trapped air is removed
and water flows properly.
Water spray from
insert not properly
covering operating
area of activated insert
tip.
Improper water flow adjustment. Refer to “Instructions For Using Dentsply SE
Cavitron® Ultrasonic Dental Unit” (Dentists’
Manual), for instructions on water flow adjust-
ment.
Water leak from
handpiece when in
operation.
“0” Ring worn on insert. Water leak
in plastic water line at handpiece or
within unit.
Replace “0” Ring. Replace handpiece and cable
assembly.
Insert vibrates but no
water, or insufficient
water volume, flows
from handpiece.
Faulty water supply to unit. Check water supply line to unit and take necessary
action to insure volume.
Damaged water regulator.
Repair or replace water regulator.
Obstruction or mineral deposits
in water system in unit.
1. Remove insert and turn water valve full open.
Observe water flow. If flow is good then
obstruction is in insert. Replace insert.
2. If obstruction is not in insert, then remove
handpiece water line at solenoid and check
water flow. If flow is good then obstruction is
in handpiece supply line. Replace handpiece
and cable assembly.
Water flow not con-
trollable by turning
water adjustment
knob.
Malfunction of water regulator.
Repair or replace water regulator.
Inserts do not fit hand-
piece properly.
“0” Ring on insert dry.
Lubricate “0” Ring with water. Replace if worn.
14

SYMPTOMS
CAUSES
CORRECTIVE MEASURES
Fingertip control
comes free from hand-
handpiece.
Threaded actuator guide is
unscrewed.
Replace items per sketch.
HANOPIECE —_
θ
ACTUATOR RETURN
SPRING
ACTUATOR GUIDE 一
| - ACTUATOR
EN
“O” RING
Insert does not vibrate
trol is operated.
when the fingertip con-
Defective fingertip control.
Disconnect handpiece connector from generator.
Connect ohmmeter between P4-3 and P4-4.
Check that contacts close when fingertip controlis
moved back and that they open when fingertip
control is released.
Defective electronic component.
Replace Printed circuit board PC1.
Tip vibrates when
unit is turned on.
Defective electronic component.
Use fingerswitch to turn unit off
a. Unit turns off check voltage
Q5-4.
1. Less than 1.6 volts replace Q5.
2. Greater than 1.6 volts replace IC2.
b. Unit fails to turn off.
1. Replace IC3 and/or Q3.
Vibration stops after
short 2 sec. ON time.
Defective electronic component.
а. U/S Off Measure voltage* at C14 + if
Less than 0.5 volts replace 04.
b. U/S On measure voltage at IC4-8 if greater
than 3.0V replace IC4.
c. If replacing IC-4 does not eliminate problem,
readjust R27 until voltage at 1C4-8 meets the
values listed in Table | with U/S on and insert
is removed, voltage must be greater than 3.5V.
*Use high impedance DVM.
Check if relay is operating.
No vibration, no
water.
Defective component.
a. Yes. Check polarizing circuit CR2, C9, SV1,
R14, and R37.
b. No.
1. Check wiring to relay and footswitch.
2. Replace relay.
15