Wassermann HSS-ZA User manual

Trimmer
HSS-ZA
Combination Trimmer with additional Polishing Spindle left
USER MANUAL

Dear customer,
Thank you for choosing a product from the Wassermann range. Wassermann Dental-
Maschinen incorporates the highest standards of quality and the latest technology.
In order to enjoy maximum performance and years of trouble-free operation, please read
this user manual carefully before you connect this device and start work, and operate the
device according to the recommended guidelines. The operation safety and the
functionality of this device can only be guaranteed if you follow both the general safety
guidelines and the applying laws to prevent accidents as well as the precautions given in
this user manual. We are not liable for any damages which occur due to inappropriate
usage or faulty operation of this device.
Make sure that anyone using this device has read and understood this user
manual.
Keep this user manual in a safe place where it can be referred to as required at
any time.
The unit complies with the relevant EU guidelines.
The unit is subject to the EU guidelines 2012/19/EU (WEEE Directive).
Company address:
Wassermann Dental-Maschinen GmbH
Rudorffweg 15-17
21031 Hamburg, Germany
Phone : [phone]/ -24 Fax.: [phone]
[email protected]
www.wassermann.hamburg
www.facebook.com/WassermannDentalmaschinen
Erstellt: 28.02.20/ msc Version: 1 Auftrag: 161996 // 161997/06
.

Contents
1 Features................................................................................................................................................4
2 Safety Symbols used in this Manual.....................................................................................................4
3 Safety Guidelines..................................................................................................................................5
3.1 Potential Dangers...................................................................................................................................6
4 Responsibility for Operation or Damage...............................................................................................6
5 Application.............................................................................................................................................7
6 Before Starting......................................................................................................................................7
6.1 Transport.................................................................................................................................................7
6.2 Storage....................................................................................................................................................7
7 Installation/ Start-up..............................................................................................................................8
7.1 Installation...............................................................................................................................................8
7.2 Location...................................................................................................................................................8
7.3 Rinsing Water Hose................................................................................................................................9
7.4 Drain Hose..............................................................................................................................................9
8 Mounting..............................................................................................................................................10
8.1 Installing the Angled Mount..................................................................................................................10
8.2 Installing the Brush Spindle..................................................................................................................11
9 Supports..............................................................................................................................................11
10 Operation...........................................................................................................................................12
10.1 General Operating Instructions...........................................................................................................12
10.2 Water Regulation................................................................................................................................12
10.3 Brush Spindle......................................................................................................................................12
11 Troubleshooting.................................................................................................................................13
12 Care and Maintenance......................................................................................................................14
12.1 Cleaning..............................................................................................................................................14
12.2 Maintenance.......................................................................................................................................15
12.3 Repairs................................................................................................................................................15
12.4 Spare Parts.........................................................................................................................................15
12.5 Service Hotline [phone]/ -24......................................................................................15
12.6 Spare Grinding Discs..........................................................................................................................15
12.7 Foil Grinding Discs..............................................................................................................................16
12.8 Scope of Delivery/ Accessories..........................................................................................................17
12.9 Warranty.............................................................................................................................................17
13 Technical Data..................................................................................................................................18
14 Disposing of the Unit.........................................................................................................................18
14.1 Information on Disposal for Countries within the EU..........................................................................18
15 EU Declaration of Conformity............................................................................................................19

1 Features
■powerful HSS-ZA wet trimmer with polishing spindle
■highest cutting and polishing speeds (settings: 1500 and 3000 min-1)
■can be used with aggressive foil-grinding disc or segmentally diamonded Dia-Quick
grinding disc
■sturdy, oxidation-free bench with longitudinal slots and side openings – no water spills
possible
■powerful disc and internal rinsing
■easy to open using rear handle
■splash-protected as per IP 54
2 Safety Symbols used in this Manual
Warning!
This is a warning of risk situations and dangers.
Failure to observe this warning could be life-threatening.
These warnings has to be observed.
Information!
This symbol draws your attention to specific features that has to be observed.
4

3 Safety Guidelines
Configuring and operating this equipment requires precise knowledge and observance
of the instructions in this user manual. The equipment is designed only for its intended
application.
WARNING:
•Servicing and repairs should be carried out only by authorised specialists.
•Before you carry out any cleaning or maintenance work, disconnect the
power plug and prevent the motor from restarting accidentally. You should
also disconnect the water line.
•Always wear protective goggles before working on the grinding disc.
•Electric motors have dangerous, high-voltage rotating parts.
Incorrect usage or inadequate maintenance could endanger personnel
and equipment.
•Any work on the motor should be carried out only by qualified service
personnel.
•Allow the condensors time to discharge before opening the unit.
•When working on the unit, wear close-fitting clothing and roll sleeves
inward only. Do not wear gloves.
•Wear a hair net (or similar) if you have long hair.
•Do not wear rings, chains, bangles or similar jewelry when working with
the HSS-ZA.
•Turn off the tap overnight and at weekends.
•Never switch from level “II” (high speed) directly to level “I” (low speed).
Always select setting “0” (wait for disc to stop) before making the speed
change.
•Make sure that the equipment is connected to the correct power source.
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3.1 Potential Dangers
Risk of injury: The trimmer’s rotating parts and the grinding disc are
dangerous.
Also the tip of the brush spindle could cause injury.
4 Responsibility for Operation or Damage
The responsibility for operating the device lies exclusively with the owner or user if said
device is incorrectly serviced, maintained or altered by persons not employed by an
authorised dealer or if the device is used in a manner contrary to its specified purpose.
The unit has to be maintained and operated in accordance with this user manual.
Wassermann Dental-Maschinen GmbH is not responsible for damage arising from the
nonobservance of these instructions.
Warranty and responsibility provisions contained in the sales and supply conditions of
Wassermann Dental-Maschinen GmbH are not extended by these instructions.
Responsibility for the product becomes void if alterations are made to it by
third parties or if non-approved parts are installed. Only original
WASSERMANN parts should be used. If any damage results from the
installation of a non-approved disc, responsiblity lies with the person
installing that spare disc.
If diamond grinding discs are used, serious wear will result from grinding
embedded materials and metals. We will be in no way responsible in this
case.
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5 Application
HSS-ZA plaster model trimmer is used in dental laboratories and is designed only for
grinding (trimming) and polishing plaster models.
To prevent damage to the trimmer and/or to the blade, it must be used only with plaster.
Only use the device for this type of application.
6 Before Starting
6.1 Transport
Before transporting the unit, ensure that it has been unplugged from the power socket.
Make sure that it is packed correctly in order to avoid accidental damage.
Be sure to check for any transport damage when unpacking the goods. Note down
any damage if found.
6.2 Storage
The unit location is very important when it comes to workplace safety, even if it is only to
be set up there for a short period. The room should be dry, well ventilated and vibration-
free. An even temperature and wooden supports also help. The unit should not be stored
or set up outdoors. If the unit is to be stored for an extended period, protect it from
moisture and dust.
7

7 Installation/ Start-up
7.1 Installation
Open the box, remove the packing materials, and carefully lift out the device and
accessories. Check the included accessories.
Before start-up, be sure the device reaches room temperature.
7.2 Location
Because the trimmer operates only with water, we recommend you install it close to a tap.
The best place is right next to a washbasin.
The device has to stand horizontally on a steady and even surface.
Do not install the unit outdoors or in places without proper ventilation.
Install the device in a place where it will not block the working area and the
functionality (take the dimensions into account). When setting up the unit, ensure
that the grinding disc is readily accessible and that the unit is located near a
plaster separator.
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Before starting the unit, connect up the following:
To install the rinsing water connector, you'll need a pressure hose with woven liner
measuring 0.5 inch (13 mm) in diameter, and for the drain, a plastic hose 1 inch (25 mm)
in diameter. When installing the drain hose, make sure that the hose end hangs freely in
the plaster separator and not beneath the surface of the water.
7.3 Rinsing Water Hose
Before the woven hose is connected to the device, please turn on the tap for a little
moment, so that any dirt in the water line is flushed out. Otherwise, correct water
supply to the unit may be affected.
Subsequently install the flushing-water connector (pressure hose with woven liner)
between the tap and the hose connector on the unit. This connector is located at the rear,
underneath the motor. Use the clamps already mounted on the hose and tighten them
firmly. The tap must have a cut-off valve so that the feeder hose does not remain under
constant pressure when the unit is not being used.
Retighten the hose clamps about 2 days after installation.
Be sure to turn off the tap overnight and at the weekend.
7.4 Drain Hose
The drain hose must be laid out such that water can never back up in the trimmer. This
would cause the water to spray out through the grinding disc opening. Always arrange the
hose in a smooth bend (not kinked) and with a permanent drop of at least 1 cm per metre.
The end of the drain hose must be above the water level of a plaster catcher.
The hose end must not be immersed in the water.
If necessary, shorten the hose.
In its standard configuration, the drain-hose connection is angled off to the right.
Finally, insert the power plug into the socket, making sure that the mains and the unit
operate on the same voltage.
9

8 Mounting
8.1 Installing the Angled Mount
If required, the angled mount is just clamped in position on the HSS-ZA. Please observe
the following instructions.
Ensure that the mount is placed correctly in position. It should be installed in
accordance with the following diagram.
When installing the angled mount,
ensure that positions 1 and 2 are
correctly located on the base.
Schraegauflage – angled mount
Auflageblech – base
Frontplatte – front plate
Gipstrimmer – plaster trimmer
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8.2 Installing the Brush Spindle
If the HSS-ZA is to be used as a polisher, you will need to install the brush spindle. First
remove the nut and then use a cloth to degrease (remove corrosion protection) the shaft
(taper), before screwing the nut on again.
Next clean the large bore of the brush spindle (inner taper) with compressed air so it is
free of dirt and grime. Now install the brush spindle.
Tap the brush spindle lightly with a rubber or plastic hammer to seat it firmly on the tip.
Tap the spindle lightly or you could damage the ball bearings. This could void the
warranty.
The brush spindle must run true when the motor is on. If it does not, sit the spindle at an
angle on the taper. Repeat the installation procedure after first cleaning the bore and
motor shaft again.
9 Supports
Aside from the item described in “8.1 Installing the angled mount” and “8.2 Installing the
brush spindle” the HSS-ZA plaster trimmer does not required any other support
mechanisms.
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10 Operation
10.1 General Operating Instructions
All instructions for using the unit, whether in verbal or written form, are based on our own
experience and experimentation and can only be regarded as guidelines.
After switching on the unit, wait a few seconds for the motor to come up to speed.
The full power of the motor can then be used. Never work the units to the point that
the motor labours to keep turning. This could result in overloading and motor
damage.
10.2 Water Regulation
The water supply is regulated at the tap. The amount of water is sufficient when the disc
remains more or less its original colour during grinding.
Grinding requires only light pressure and slight left and right movement of the cast.
It goes without saying that only completely set plaster casts should be ground. Soft
plaster could lead to blockages, especially in the hoses.
10.3 Brush Spindle
Use only original brush spindles as spare parts as the spindle diameter must match the
bore of the protective sleeve (removal nut), while leaving room for cleaning.
You turn the removal nut to the left when undoing and pushing off the brush spindle.
The brush spindle has a cross hole to make mounting and demounting brushes or
polishing discs easier. You insert a pin or suitable tool to hold the spindle and then simply
screw the brush or polishing disc in or out.
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11 Troubleshooting
Fault Cause Solution
Water spray at
disc opening
Water supply set too high Reduce water pressure at tap or ball
valve (see “10.2 Water regulation”)
Drain hose has been
lengthened with a thinner
hose
Make sure that the diameter of the drain
hose is 1 inch (25.4 mm)
Drain hose is kinked Make sure the hose is laid out without
kinks
Hose end is under the surface
of the water in the plaster
catcher
Make sure that the hose end is above the
surface of the water
The fall of the hose is
insufficient
Ensure that the fall is at least 1 cm per
metre
The radius of the hose is too
small
Ensure that the hose is laid out as
straight as possible
There is a tube bend in the
hose (causing blow-back)
The bend must be increased to at least D
= 40 mm
Water supply is
affected
Pollution in front of the sieve
in the inflow support
(below the device at the
solenoid valve)
Disassemble supply hose,
remove dirt with the help of torch light,
tweezers and vacuum cleaner
No water supply,
no clicking noise
(from the
solenoid valve)
when switching
on the unit
Solenoid valve defective Please contact a service department
for changing the solenoid valve
(Item no. 162071)
If the above recommendations do not solve the problem, contact your dental depot
or our service department.
13

12 Care and Maintenance
12.1 Cleaning
Before cleaning or servicing the unit, ensure that it is disconnected from the
mains power and cannot be switched on again accidentally.
Keep the unit well away from water supply.
Open the unit only after the disc has come to a complete stop.
The identification plate has always to be kept in easily legible condition and has
not to be removed.
Remove external dirt (plaster leach) from time to time with a damp cloth.
Use only cold cleaners to avoid damaging the paintwork or removing the lettering.
The equipment should be cleaned at regular intervals to ensure trouble-free
operation.
It requires only normal cleaning (sponge, damp cloth, mild detergent) and no further
chemical additives.
When mounting the brush spindle and the motor shaft (taper), always make sure
that the brush spindle taper itself is clean and free of grease.
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12.2 Maintenance
•The HSS-ZA plaster model trimmer does not require any maintenance. However, if
you open the disc chamber for cleaning or to change the disc, be sure to clean the
sealing surfaces and coat them with a new application of water-insoluble grease.
•For safety reasons, you should regularly check that the clamps on the water hose
are tight.
•Ensure that the bore of the removal nut for the brush spindle stays clean. Check the
bore for dirt from time to time and clean if necessary. The brush spindle should be
removed and the bore of the nut cleaned, especially after polishing with pumice.
12.3 Repairs
Servicing or repairs to the unit has only to be carried out by qualified technicians.
Only original spare parts are to be used. Responsibility for the product is voided
if unauthorised persons alter it or if inappropriate components are installed.
12.4 Spare Parts
If necessary please contact our service hotline phone.
12.5 Service Hotline [phone]/ -24
12.6 Spare Grinding Discs
Spare grinding discs are always supplied with a tube of grease for sealing the
disc chamber.
When using a spare grinding disc, follow the instructions provided for changing
discs.
15

Installing a spare grinding disc on an existing disc mounted in the unit,
regardless of its origin or model type, is strictly prohibited by Wassermann.
Warning!
The use of diamond grinding discs to grind embedded material and metals will
result in excessive wear on the blade. We assume no responsibility if this occurs.
Responsibility for the product becomes void if alterations are made to it by third
parties or if non-approved parts are installed. Only original WASSERMANN parts
should be used. If any damage results from the installation of a non-approved
disc, responsiblity lies with the person installing that spare disc.
12.7 Foil Grinding Discs
These discs can be turned around and remounted after one side has been used up, thus
allowing you to continue working. This increases disc life considerably.
•Loosen the star handles to take off the front cover.
•Loosen the central screw on the axle counter-clockwise and hold the grinding disc.
•If necessary loosen the thrust piece by sticking a screwdriver between the thrust
piece and the grinding disc and take it off together with the PVC washer.
•Turn around the foil grinding disc.
•Put on the thrust piece and the PVC washer and screw on the central screw.
•Clean the contact surfaces of the housing parts and seal them with the grease
supplied by applying a line of grease on one part of the housing. Do not spread it.
•Put back the front plate and fasten the star handles tightly.
•Remove any spare grease.
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12.8 Scope of Delivery/ Accessories
HSS-ZA including Dia-Quick grinding disc Item no.: 161996
HSS-ZA including foil grinding disc Item no.: 161997
Included in delivery Item no.:
Inclined support 168037
Supply hose 1m 320006
Discharge hose 1m 320017
Brush spindle left 152025
Accessories Item no.:
Polishing trough with extractor nozzle 143130
Polishing trough without extractor nozzle 143140
Polishing trough base complete 161115
Brush spindle left 152025
Brush spindle left (long version) 152044
Spare Dia-Quick grinding disc (partly diamonded), incl. grease 162063
Spare foil grinding disc, fine, 1Set = 4 pieces, incl. grease 162013
Spare foil grinding disc, fine,1Set = 4 pieces, incl. grease 162023
Sealing grease for trimmer , 25 ml 629002
Puller for grinding disc change 164026
12.9 Warranty
The warranty period for our equipment is 12 months. If faults occur within the
warranty period, contact your dental depot or get in touch directly with our service
department.
Your equipment should only be operated in perfect condition. If faults occur which
could harm operators or third parties, the unit should not be used until it has been
fixed.
This warranty does not cover damage caused by improper use, external mechanical
causes, transport damage or interference with the unit by unauthorized persons.
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13 Technical Data
HSS-ZA including foil grinding disc Item no.: 161997
Voltage* 220–240 V / 50/60 Hz
Power consumption 3.5 A
Output 750 W
W x H x D 300 x 315 x 480 mm
Weight 19.6 kg
Sound level ≤ 70 dB(A)
Speed 1500 / 3000 min-1
Duty S6 - 40 %
Table dimensions projecting 120 mm
Spindle height 170 mm
Depth with spindle 525 mm
*Other voltages on request.
The noise emission measured in a 1-metre circle around the unit and 1.6 metres high at an
average 50% idling, 30% average load and 20% full load was 69 dB(A). This was
determined in accordance with DIN 45635 Part 1.
Technical changes reserved.
14 Disposing of the Unit
The unit has to be disposed by an authorized recycling operation. The selected company
has to be informed of all possibly health-hazardous residues in the unit.
14.1 Information on Disposal for Countries within the EU
To conserve and protect the environment, prevent environmental pollution and
improve the recycling of raw materials, the European Commission adopted a
directive that requires the manufacturer to accept the return of electrical
and electronic units for proper disposal or recycling.
Within the European Union units with this symbol should not therefore be disposed of
in unsorted domestic waste.
For more information regarding proper disposal please apply at your local authoritie.
18

15 EU Declaration of Conformity
in accordance with 2014/35/EU (Low Voltage Directive) and 2014/30/EU (Electromagnetic
Compatibility Directive) and 2006/42/EC (Machinery Directive) and 2011/65/EU (RoHS
Directive)
Manufacturer: W A S S E R M A N N
Dental-Maschinen GmbH
Rudorffweg 15-17
21031 Hamburg
Germany
Product description: Trimmer for dental
applications
Model: HSS-AZ incl. Dia-Quick grinding disc
HSS-AZ incl. foil grinding disc
Item no.161996
Item no.161997
Applicable
standards:
DIN EN 61010-1
DIN EN 61000-6-3
DIN EN 61000-6-1
DIN 45635-1
DIN EN 60335-1
Hiermit wird bestätigt, dass die oben bezeichnete Maschine den genannten EU-Richtlinien
entspricht. Diese Erklärung wird ungültig, falls die Maschine ohne unsere Zustimmung
verändert wird.
This is to confirm that the above mentioned machine complies with the described EU
guidelines. This declaration becomes invalid if the machine is modified without our
approval.
Cette machine est conforme aux normes en vigueur d´Union européenne. Cet avis est
nul et non avenant si cette machine est modifiée sans notre accord.
Esta máquina, anteriormente mencionada, cumple con los limites requeridos por el
reglamento UE. Ahora bien, esta declaración quedará invalidada en caso de realizar
modificaciones al aparato sin nuestra aprobación.
Hiermee wordt bevestigd dat bovengenoemde machine voldoet aan de voorgeschreven
EU normen. Deze verklaring verliest geldigheid als er zonder onze uitdrukkelijke
toestemming wijzigen aan de machine worden aangebracht.
Place, date: Hamburg, 2020-02-28 Company stamp :
Signature: ________________________
Sven Wassermann
(Managing Director)
19