KaVo K-ERGOgrip 4944 User manual

Instructions for use
K-ERGOgrip 4944
Always be on the safe side.

Distributed by:
KaVo Dental GmbH
Bismarckring 39
D-88400 Biberach
Phone [phone]
Fax [phone]
Manufacturer:
Kaltenbach & Voigt GmbH
Bismarckring 39
D-88400 Biberach
www.kavo.com

Contents
1User instructions............................................................................................................................................... 4
1.1 User guide................................................................................................................................................ 4
1.1.1 Abbreviations............................................................................................................................... 4
1.1.2 Symbols....................................................................................................................................... 4
1.1.3 Target group................................................................................................................................ 4
1.2 Service...................................................................................................................................................... 4
1.3 Warranty terms and conditions................................................................................................................. 5
1.4 Transportation and storage....................................................................................................................... 5
1.4.1 Currently valid packaging regulations......................................................................................... 5
1.4.2 Damage in transit........................................................................................................................ 5
1.4.3 Information on the packaging: Storage and transportation......................................................... 6
2Safety............................................................................................................................................................... 8
2.1 Description of safety instructions.............................................................................................................. 8
2.1.1 Warning symbol........................................................................................................................... 8
2.1.2 Structure...................................................................................................................................... 8
2.1.3 Description of hazard levels........................................................................................................ 8
2.2 Safety instructions.................................................................................................................................... 8
2.2.1 General information..................................................................................................................... 8
2.2.2 Product-specific........................................................................................................................... 9
3Product description......................................................................................................................................... 11
3.1 Purpose – Intended use.......................................................................................................................... 11
3.1.1 General...................................................................................................................................... 11
3.2 K-ERGOgrip 4944 handpiece................................................................................................................. 11
3.3 Scope of delivery ................................................................................................................................... 12
3.4 Technical Data........................................................................................................................................ 12
4First use.......................................................................................................................................................... 14
5Operation........................................................................................................................................................ 15
5.1 Replacing the grip sleeve....................................................................................................................... 15
5.2 Using/Changing the tool......................................................................................................................... 16
5.3 Operation................................................................................................................................................ 16
6Maintenance................................................................................................................................................... 18
6.1 Servicing................................................................................................................................................. 18
6.1.1 Replacing ball bearings............................................................................................................. 18
6.1.2 Replacing the cable................................................................................................................... 21
6.2 Cleaning.................................................................................................................................................. 22
6.2.1 Weekly cleaning of chuck and handpiece section..................................................................... 22
6.2.2 Cleaning the grip sleeve............................................................................................................ 24
7Troubleshooting.............................................................................................................................................. 25
8Accessories.................................................................................................................................................... 26
9Spares............................................................................................................................................................ 27
10 Declaration of conformity................................................................................................................................ 28
Instructions for use K-ERGOgrip 4944
Contents
3 / 30

Instructions for use K-ERGOgrip 4944
1 User instructions | 1.1 User guide
4 / 30
1 User instructions
1.1 User guide
Requirement
Read these instructions prior to first use to avoid misuse and prevent damage.
1.1.1 Abbreviations
Abbre‐
viation
Explanation
IfU Instructions for use
CI Care instructions
AI Assembly instructions
TI Technician's instructions
SC Safety checks
IEC International Electrotechnical Commission
RI Repair instructions
RK Retrofitting kit
AS Assembly set
EP Enclosed parts
EMC Electromagnetic compatibility
PI Processing instructions
1.1.2 Symbols
Important information for users and technicians
CE mark (Communauté Européenne). A product with this mark meets the re‐
quirements of the applicable EC directives.
Action request
Follow instructions for use!
Refer to chapter Safety/Warning
Open, remove, loosen, etc.
Close, screw in, fasten, etc.
1.1.3 Target group
This document is for dental technicians and laboratory personnel.
1.2 Service

Instructions for use K-ERGOgrip 4944
1 User instructions | 1.3 Warranty terms and conditions
Service hotline:
[phone]
[email protected]
Please indicate the product serial number in all requests!
For further information, please visit: www.kavo.com
1.3 Warranty terms and conditions
Within the scope of the applicable KaVo delivery and payment conditions, KaVo guar‐
antees proper function, absence of defects in material and workmanship for a period
of 12 months from the date of purchase as confirmed by the salesperson.
In case of justified complaints, KaVo will honour its warranty with a free replacement
or repair.
The warranty does not cover defects and their consequences that arose or may have
arisen due to natural wear, improper handling, cleaning or maintenance, non-compli‐
ance with operating, maintenance or connection instructions, corrosion, contaminated
media supply or chemical or electrical influences deemed abnormal or impermissible
in accordance with factory specifications.
The warranty does not usually cover lamps, light conductors made of glass and glass
fibres, glassware, rubber parts and the colourfastness of plastic parts.
The warranty expires if defects or their consequences could possibly have arisen be‐
cause the product has been modified or changed. Warranty claims can only be asser‐
ted when they are immediately reported to KaVo in writing.
This notification must be accompanied by a copy of the invoice or delivery note on
which the manufacturing number is clearly visible. In addition to the guaranty, the stat‐
utory warranty claims of the purchaser also apply with a warranty period of 12 months.
1.4 Transportation and storage
1.4.1 Currently valid packaging regulations
Note
Only valid for the Federal Republic of Germany.
Dispose of and recycle the sales packaging appropriately in accordance with current
packaging regulations, employing waste management or recycling companies. Com‐
ply with the comprehensive return system. KaVo has had its sales packaging licensed
for this purpose. Please comply with the regional public waste-disposal system.
1.4.2 Damage in transit
In Germany
If the packaging is visibly damaged on delivery, please proceed as follows:
1. The recipient of the package must record the loss or damage on the delivery re‐
ceipt. The recipient and the representative of the shipping company must sign this
delivery receipt.
2. Leave the product and packaging in the condition in which you received it.
3. Do not use the product.
4. Report the damage to the shipping company.
5 / 30

Instructions for use K-ERGOgrip 4944
1 User instructions | 1.4 Transportation and storage
6 / 30
5. Report the damage to KaVo.
6. Consult with KaVo first, before returning a damaged product.
7. Send the signed delivery receipt to KaVo.
If the product is damaged but there was no discernable damage to the packaging
upon delivery, proceed as follows:
1. Report the damage to the shipping company immediately and no later than 7 days
after delivery.
2. Report the damage to KaVo.
3. Leave the product and packaging in the condition in which you received it.
4. Do not use a damaged product.
Note
If the recipient fails to comply with any of the above-mentioned obligations, the
damage will be considered to have arisen after delivery
(in accordance with the General German Freight Forwarders´ Terms and Conditions, Art. 28)
.
Outside Germany
Note
KaVo shall not be held liable for damage arising from transportation.
The shipment must be checked on arrival.
If the packaging is visibly damaged on delivery, please proceed as follows:
1. The recipient of the package must record the loss or damage on the delivery re‐
ceipt. The recipient and the representative of the shipping company must sign this
delivery receipt.
Without this evidence, the recipient will not be able to assert a claim for damages
against the shipping company.
2. Leave the product and packaging in the condition in which you received it.
3. Do not use the product.
If the product is damaged but there was no discernable damage to the packaging
upon delivery, proceed as follows:
1. Report any damage to the shipping company either immediately or no later than 7
days after delivery.
2. Leave the product and packaging in the condition in which you received it.
3. Do not use a damaged product.
Note
If the recipient fails to comply with any of the above-mentioned obligations, the
damage will be considered to have arisen after delivery
(in accordance with CMR law, Chapter 5, Art. 30).
1.4.3 Information on the packaging: Storage and transportation
Note
Please keep the packaging in case you need to return the product for servicing or
repair.
The symbols printed on the outside are for transportation and storage, and have the
following meaning:

Instructions for use K-ERGOgrip 4944
1 User instructions | 1.4 Transportation and storage
Transport upright with the arrows pointing upwards!
Fragile - protect against impact!
Protect from moisture!
Permissible stacking load
Temperature range
Humidity
Air pressure
7 / 30

Instructions for use K-ERGOgrip 4944
2 Safety | 2.1 Description of safety instructions
8 / 30
2 Safety
2.1 Description of safety instructions
2.1.1 Warning symbol
Warning symbol
2.1.2 Structure
DANGER
The introduction describes the type and source of the hazard.
This section describes potential consequences of non-compliance.
▶ The optional step includes necessary measures for hazard prevention.
2.1.3 Description of hazard levels
Safety instructions distinguishing between three hazard levels are used in this docu‐
ment to prevent personal and property damage.
CAUTION
CAUTION
indicates a hazardous situation that can cause damage to property or mild to moder‐
ate injuries.
WARNING
WARNING
indicates a hazardous situation that can lead to serious or fatal injury.
DANGER
DANGER
indicates a maximal hazard due to a situation that can directly cause death or fatal
injury.
2.2 Safety instructions
2.2.1 General information
Note
Only competent and trained personnel may use the product!
The user must ensure that the unit works properly and is in satisfactory condition be‐
fore each use.
Users have a duty to:
▪ Only use equipment that is operating correctly
▪ Protect themselves and others against hazards.

Instructions for use K-ERGOgrip 4944
2 Safety | 2.2 Safety instructions
The following persons are authorised to repair and service the KaVo product:
▪ Technicians of KaVo branch offices after appropriate product training.
▪ Specifically KaVo-trained technicians of KaVo franchised dealers.
KaVo shall not be responsible for damage caused by:
▪ external influences, poor media quality or faulty installation.
▪ The use of incorrect information.
▪ repair work carried out incorrectly.
Note
Any waste which is generated must be recycled or disposed of in strict compliance
with all applicable national regulations in a manner which is safe both for people
and the environment.
If you have any questions regarding proper disposal of the KaVo product, please
contact the KaVo branch.
CAUTION
Improper maintenance or repair of the unit.
Damage to and malfunction of the unit.
▶ Repair and servicing work on the electronic part of the unit may be done only by
skilled staff or KaVo-trained technicians.
▶ Use original KaVo spare parts only.
2.2.2 Product-specific
WARNING
Injury or damage from damaged functional parts.
Damage to functional parts can cause further damage or personal injury.
▶ Check the device, electrical cables and any accessories for possible damage to
the insulation and replace if necessary.
▶ If functional parts are damaged: discontinue your work and repair the damage or
notify a service technician!
WARNING
Risk of injury due to rotating tools.
Eye injury.
▶ Wear safety goggles.
▶ Use protective shield.
WARNING
Vapours, chips and dust may be produced during the processing of various
materials.
These can damage the eyes and airways.
Use protective goggles and respiratory protection and suitable dust extraction as nee‐
ded.
CAUTION
Injury or damage due to wear.
Irregular running noise, significant vibration, overheating, imbalance or insufficient
grip.
▶ Stop work and seek service support.
9 / 30

Instructions for use K-ERGOgrip 4944
2 Safety | 2.2 Safety instructions
10 / 30
CAUTION
Risk due to incorrectly stored handpiece.
Injury caused by chucked drill or grinder.
Damage to clamping system caused by handpiece falling down.
▶ Store the handpiece properly in a tray or tool carrier.
CAUTION
Injury or damage caused by unsuitable drills or grinders.
Drill or grinder falling out of chuck.
▶ Only use drills or grinders meeting the requirements of BS EN ISO 1797-1!
▶ Never use drills or grinders with worn shafts!
▶ Follow the instructions for use supplied by the drill or grinder manufacturer!
CAUTION
Damage by liquids.
Faults on electrical components.
▶ Protect openings of the product from any ingress of liquids.
▶ Do not continue using the device and contact Customer Service, if there is any
ingress of liquid into the device.
CAUTION
Unsuitable speed.
Damage to the product.
Problems processing selected material.
▶ Check the speed setting each time you turn on the unit!
CAUTION
Premature wear and malfunctions from improper care.
Reduced product life.
▶ Use recommended care products only.
CAUTION
Infection risk due to dental prosthesis
Contamination of handpiece by dental prosthesis.
▶ Products bearing an infection risk need to be cleaned/disinfected prior to process‐
ing.
Note
Please note the instructions for use of the control unit.

Instructions for use K-ERGOgrip 4944
3 Product description | 3.1 Purpose – Intended use
3 Product description
3.1 Purpose – Intended use
3.1.1 General
Note
Only competent and trained personnel may use the product!
In combination with KaVo control units, this KaVo product is suitable for the process‐
ing of materials in dentistry, industry and trade applications by means of rotating tools.
Any other type of use is not permitted.
"Proper use" includes following all instructions for use and ensuring that all inspections
and service tasks are performed.
This product has only been approved for use indoors.
The overarching guidelines and/or national laws, national regulations and the rules of
technology applicable to the startup and use of the KaVo product for the intended pur‐
pose are to be applied and complied with.
The applicable national legal regulations must be observed during the use of the de‐
vice, in particular the following:
▪ Current occupational safety regulations.
▪ Current accident prevention regulations.
3.2 K-ERGOgrip 4944 handpiece
①Chuck 2.35 mm ②Tip
③ERGO grip shell ④Knob
⑤Connection cable (including knob) ⑥Replaceable grip shell
11 / 30

Instructions for use K-ERGOgrip 4944
3 Product description | 3.3 Scope of delivery
12 / 30
3.3 Scope of delivery
Figure Description Material number
K-ERGOgrip 4944 hand‐
piece
Mat. no. 1.003.7555
Grip sleeve Mat. no. 1.003.8708
Clamp Mat. no. 1.004.1148
Cleaning brush Mat. no. 0.229.3205
Instructions for use
3.4 Technical Data
Speed
Range 1,000 to 50,000 rpm
Dimensions
Length 140 mm
Handpiece diameter 38 mm
Weight
Handpiece 202 g
Cable 107 g
Voltage and power
Output 160 W
Torque 7 Ncm

Instructions for use K-ERGOgrip 4944
3 Product description | 3.4 Technical Data
Ambient conditions
Permissible ambient temperature range +5 oC to +40 oC
Permissible up to a maximal relative hu‐
midity of
80 %
Intermittent mode
Operating time 2 minutes / ON
Pause time 8 minutes / OFF
Requirements, classification
Degree of soiling 2
Overvoltage category II
Transportation and storage conditions
Temperature range: -20oC to +70oC
Relative humidity: 5% to 95% (non-condensing)
Air pressure: 700 hPa to 1060 hPa
Note
Prior to start-up, very cold products must be heated to a temperature of
Heat to 20oC to 25oC. Avoid condensation.
13 / 30

Instructions for use K-ERGOgrip 4944
4 First use | 3.4 Technical Data
14 / 30
4 First use
Requirement
The handpiece must only be operated and stored with the tool or test probe
chucked.
Note
Do not switch the handpiece on while the chuck is open!
Note
When it is new, you can hear a soft, irregular "clicking" or "buzzing" at high speeds
of the micromotor. This bearing noise is completely normal, and disappears as soon
as the lubricant is evenly distributed.
The handpiece can be used on the
▪ K-Control
- TLC 4955 knee control
- TLC 4956 foot control
- TLC 4957 table top control

Instructions for use K-ERGOgrip 4944
5 Operation | 5.1 Replacing the grip sleeve
5 Operation
Note
Note the safety instructions before each use.
5.1 Replacing the grip sleeve
The handpiece is supplied fitted with an ERGOgrip grip sleeve.
▶ Take hold of the handpiece by the grip sleeve ② insert the clip into the tip ① and
unscrew the tip ① in the direction indicated by the arrow.
▶ Pull the tip ① towards you.
Note
Removing the tip may leave the felt disk loose in the tip or on the rotor. If the felt
disk is on the rotor it must be removed.
▶ Take hold of the handpiece by the knob ② and remove the grip sleeve ① by pull‐
ing it towards you.
▶ Take hold of the handpiece by the knob ② and fit the new grip sleeve ①.
Note
If the felt disk has been removed from the rotor, it must be pushed back onto the
rotor.
15 / 30

Instructions for use K-ERGOgrip 4944
5 Operation | 5.2 Using/Changing the tool
16 / 30
▶ Screw the tip ① to the handpiece ② and tighten with the clip in the direction indi‐
cated by the arrow.
5.2 Using/Changing the tool
▶ Turn the grip sleeve ② and knob ③ in opposite directions as indicated by the ar‐
rows until the chuck opens completely (you will hear a double-click).
▶ Take the tool or test probe ① out of the chuck.
▶ Insert a new tool or test probe ① into the chuck as far as it will go.
▶ Take hold of the handpiece by the grip sleeve ② and turn the knob ③ in the di‐
rection indicated by the arrow until the chuck closes completely (you will hear a
double-click).
Note
Once you have inserted the tool (insert the tool as far as it will go, tool shaft length:
minimum 16 mm) you need to check the functionality of the chuck. KaVo recom‐
mends a grip test at 50 N.
Note
Only use tools that work properly. Follow the instructions of the tool manufacturer.
5.3 Operation
Note
Unsuitable lighting in the workplace can give rise to what is known as the strobo‐
scope effect.
This simulates tool standstill at certain speeds.
The problem can be solved by providing suitable lighting.
▶ Prior to every use, check the required speed on the control unit and modify it if
necessary.

Instructions for use K-ERGOgrip 4944
5 Operation | 5.3 Operation
▶ Operate the handpiece as specified in the instructions for use of the upstream
control unit.
17 / 30

Instructions for use K-ERGOgrip 4944
6 Maintenance | 6.1 Servicing
18 / 30
6 Maintenance
CAUTION
Ingress of dust or liquids into the handpiece.
Damage to ball bearings and O-rings.
▶ Never use compressed air or cleaning agents (such as spray cleaners, degreas‐
ers, etc.)!
6.1 Servicing
6.1.1 Replacing ball bearings
Removing ball bearings
▶ Unscrew the knob ③ from the handpiece ① and pull off the connection cable ②
in the direction indicated by the arrow.
▶ Take hold of the handpiece by the grip sleeve ② insert the clip into the tip ① and
unscrew the tip ① in the direction indicated by the arrow.
▶ Pull the tip ① towards you.
Note
Removing the tip may leave the felt disk loose in the tip or on the rotor. If the felt
disk is on the rotor it must be removed.
▶ Pull the grip sleeve ① towards you and off the sleeve ②.

Instructions for use K-ERGOgrip 4944
6 Maintenance | 6.1 Servicing
▶ Remove the felt ring ① from the rotor ②.
▶ Using an open-ended spanner (16 mm), unscrew the bearing housing ② from the
sleeve ④ in the direction indicated by the arrow and remove the bearing housing
②.
▶ Use a pin (diameter: 8 mm-0.02) to push the ball bearing ③ out of the bearing
housing ②.
▶ Insert the socket wrench in the threaded ring ①, and screw the threaded ring ①
out of the sleeve ④ in the direction of the arrow.
▶ Remove the threaded ring ① from the sleeve ④ and pull the motor unit ② off the
sleeve ④.
▶ Take the ring ③ off the motor unit ②.
DANGER
Risks due to strong permanent-magnet field
The functions of implanted systems (such as pacemakers) can be influenced.
Metal objects can be attracted and in the event of impact may damage the permanent
magnet, for example.
▶ Anyone with an implanted system must maintain a safety clearance of 5 metres
from the rotor.
▶ Do not place the rotor in the vicinity of metal objects.
▶ Pull the rotor ② out of the stator ①.
▶ Hold the rotor ② with a fork wrench (7 mm), and screw off the threaded ring ④
from the rotor ② turning the socket wrench the direction of the arrow (left-hand
thread).
▶ Remove the ball bearing ③ from the rotor ②.
19 / 30

Instructions for use K-ERGOgrip 4944
6 Maintenance | 6.1 Servicing
20 / 30
Fitting the ball bearing
DANGER
Risks due to strong permanent-magnet field
The functions of implanted systems (such as pacemakers) can be influenced.
Metal objects can be attracted and in the event of impact may damage the permanent
magnet, for example.
▶ Anyone with an implanted system must maintain a safety clearance of 5 metres
from the rotor.
▶ Do not place the rotor in the vicinity of metal objects.
▶ Slide the ball bearing ③ onto the rotor ②.
▶ Place the threaded ring ④ on the rotor ②.
▶ Hold the rotor ② with a fork wrench (7 mm), and screw the threaded ring ④ tight
using the socket wrench (left-hand thread).
▶ Push the rotor ② into the stator ①.
▶ Place the ring ③ on the motor unit ② and push into place.
▶ Use the docking guide to push the motor unit ② into the sleeve ④. Push the
docking guide into the sleeve ④ from behind, thread the motor unit's contacts ②
into the docking guide and push the motor unit ② and the docking guide into the
sleeve ④ from the front.
▶ Screw the threaded ring ① into the sleeve ④ using the socket wrench.
▶ Insert the ball bearing ③ into the bearing housing ②, making sure that the ball
bearing ③ is positioned correctly.
▶ Place the bearing housing ② on the rotor ④ and screw into place on the sleeve
⑤ using an open-ended spanner (16 mm).
▶ Place the felt ring ① on the rotor ②.