Jet JDS-12 User manual

GB - ENGLISH
Operating Instructions
Dear Customer,
Many thanks for the confidence you have shown in us with the purchase of your new JET-machine. This manual has been
prepared for the owner and operators of a JET JDS-12 disc sander to promote safety during installation, operation and
maintenance procedures. Please read and understand the information contained in these operating instructions and the
accompanying documents. To obtain maximum life and efficiency from your machine, and to use the machine safely, read this
manual thoroughly and follow instructions carefully.
…Table of Contents
1. Declaration of conformity
2. JET Warranty
3. Safety
Authorized use
General safety notes
Remaining hazards
4. Machine specifications
Technical data
Noise emission
Contents of delivery
5. Transport and start up
Transport and installation
Assembly
Mains connection
Dust connection
Starting operation
6. Machine operation
7. Setup and adjustments
Sanding disc replacement
Table adjustment
8. Maintenance and inspection
9. Trouble shooting
10. Available accessories
1. Declaration of conformity
On our own responsibility we hereby
declare that this product complies with
the regulations* listed on page 2.
Designed in consideration with the
standards**.
2. JET Group Warranty
The JET Group makes every effort to
assure that its products meet high
quality and durability standards and
warrants to the original retail
consumer/purchaser of our products
that each product be free from defects
in materials and workmanship as
follows:
2 YEAR LIMITED WARRANTY ON
ALL PRODUCTS UNLESS
SPECIFIED OTHERWISE.
This Warranty does not apply to
defects due to directly or indirectly
misuse, abuse, negligence or
accidents, normal wear-and-tear,
repair or alterations outside our
facilities, or to a lack of maintenance.
The Jet group limits all implied
warranties to the period specified
above, from the date the product was
purchased at retail
To take advantage of this warranty,
the product or part must be returned
for examination, postage prepaid, to
an authorized repair station
designated by our office.
Proof of purchase date and an
explanation of the complaint must
accompany the merchandise.
If our inspection discloses a defect, we
will either repair or replace the
product, or refund the purchase price if
we cannot readily and quickly provide
a repair or replacement, if you are
willing to accept a refund.
We will return repaired product or
replacement at JET’S expense, but if it
is determined there is no defect, or
that the defect resulted from causes
not within the scope of JET’S
warranty, then the user must bear the
cost of storing and returning the
product
The JET Group reserves the right to
make alterations to parts, fittings, and
accessory equipment which they may
deem necessary for any reason
whatsoever.
3. Safety
3.1 Authorized use
This disc sander is designed for
sanding wood and similar materials
only. Sanding of other materials is not
permitted and may be carried out in
specific cases only after consulting
with the manufacturer.
The machine is not suitable for wet
sanding.
The proper use also includes
compliance with the operating and
maintenance instructions given in this
manual.
The machine must be operated only
by persons familiar with its operation
and maintenance and who are familiar
with its hazards.
The required minimum age must be
observed.
The machine must only be used in a
technically perfect condition.
When working on the machine, all
safety mechanisms and coversmust
be mounted.
In addition to the safety requirements
containedin these operating
instructions and your country’s
applicable regulations, you should
observe the generally recognized
technical rules concerning the
operation of woodworking machines.
Any other use exceeds authorization.
In the event of unauthorized use of the
machine, the manufacturer renounces
all liability and the responsibility is
transferred exclusively to the operator
3.2 General safety notes
Woodworking machines can be
dangerous if not used properly.
Therefore theappropriate general
technical rules as well as the following
notes must be observed.
Read and understand the entire
instruction manual before attempting
assembly or operation.
Keep this operating instruction close
by the machine, protected from dirt

and humidity, and pass it over to the
new owner if you part with the tool.
No changes to the machine may be
made.
Daily inspect the function and
existence of the safety appliances
before you start the machine.
Do not attempt operation in this case,
protect the machine by unplugging the
mains cord.
Remove all loose clothing and confine
long hair.
Before operating the machine, remove
tie, rings, watches, other jewellery, and
roll up sleeves above the elbows.
Wear safety shoes; never wear leisure
shoes or sandals.
Always wear the approved working
outfit.
Do not wear gloves.
Install the machine so that there is
sufficient space for safe operation and
workpiece handling.
Keep work area well lighted.
The machine is designed to operate in
closed rooms and must be placed
stable on firm and levelled table
surface.
Make sure that the power cord does
not impede work and cause people to
trip.
Keep the floor around the machine
clean and free of scrap material, oil
and grease.
Stay alert!
Give your work undivided attention.
Use common sense. Do not operate
the machine when you are tired.
Do not operate the machine under the
influence of drugs, alcohol or any
medication. Be aware that medication
can change your behaviour.
Never reach into the machine while it
is operating or running down.
Never leave a running machine
unattended. Before you leave the
workplace switch off the machine.
Keep children and visitors a safe
distance from the work area.
Do not operate the electric tool near
inflammable liquids or gases.
Observe the fire fighting and fire alert
options, for example the fire
extinguisher operation and place.
Do not use the machine in a dump
environment and do not expose it to
rain.
Wood dust is explosive and can also
represent a risk to health.
Dust form some tropical woods in
particular, and from hardwoods like
beach and oak, is classified as a
carcinogenic substance.
Always use a suitable dust extraction
device
Before machining, remove any nails
and other foreign bodies from the
workpiece.
Never operate with the table insert not
in place.
Make sure to guide and hold the
workpiece thigh during machining.
Machine only stock which rests
securely on the table.
Specifications regarding the maximum
or minimum size of the workpiece
must be observed.
Do not remove chips and workpiece
parts until the machine is at a
standstill.
Do not stand on the machine.
Connection and repair work on the
electrical installation may be carried
out by a qualified electrician only.
Have a damaged or worn power cord
replaced immediately.
Replace any torn or worn sanding disc
immediately.
Make all machine adjustments or
maintenance with the machine
unplugged from the power source.
3.3 Remaining hazards
When using the machine according to
regulations some remaining hazards
may still exist.
The moving sanding disc can cause
injury.
Risk of kickback. The workpiece is
caught by the moving sanding disc
and thrown back to the operator.
Thrown workpiece parts can lead to
injury.
Sanding dust and noise can behealth
hazards. Be sure to wear personal
protection gear such as safety goggles
and dust mask. Use a suitable dust
exhaust system.
Defective sanding discs can cause
injuries.
The use of incorrect mains supply or a
damaged power cord can lead to
injuries caused by electricity.
4. Machine specifications
4.1 Technical data
Sanding disc diameter 305mm
Table size (WxL) 250x415mm
Table tilt -15° - 45
Disc speed 1400 rpm
(Table height above floor 890mm)
Dust port diameter 100mm
Overall (LxWxH) 533x650x533mm
Net weight 54 kg
Mains 230V ~1/N/PE 50Hz
Output power 0,75 kW (1HP) S1
Reference current 6 A
Extension cord (H07RN-F): 3x1,5²
Installation fuse protection 10A
4.2 Noise emission
Acoustic pressure level (EN 11202):
Idling 71,9 dB (A)
In operation 84,1 dB (A)
The specified values are emission
levels and are not necessarily to be
seen as safe operating levels.
As workplace conditions vary, this
information is intended to allow the
user to make a better estimation of the
hazards and risks involved only.
4.3 Content of delivery
Sanding table
Dust collection port
Sanding disc 60 grit
Mitre gauge
Circular sanding point
Filler bar
Operating tools
Assembly kit
Operating manual
Spare parts list.
5. Transport and start up
5.1 Transport and installation
The machine is designed to operate in
closed rooms and must bebolted on a
firm and levelled table surface or on
the originalJet stand (optional
accessory).
For packing reasons the machine is
not completelyassembled.
5.2 Assembly
If you notice transport damage while
unpacking, notify your supplier
immediately. Do not operate the
machine!

Dispose of the packing in an
environmentally friendly manner.
Clean all rust protected surfaces with
a mild solvent.
Stand assembly (Option)
(Article No.: 708438)
Mount the legs to the outside of the
supports, using 16 carriage bolts and
nuts (Fig 1)
Fig 1
Mounting the table
Remove the knobs (A, Fig 2), washers
(B) and the trunnion holders(C) on
both sides.
Fig 2
Lift the table (D) into position.
Reinstall the trunnion holders,
washers and knobs.
Mounting the dust port
Place the gasket (E, Fig 3) and mount
the dust port (F) to the sander with
four M6x16 hex cap bolts (G).
Fig 3
Mounting the sanding disc guard
Attach the sanding disc guard(O, Fig
4) with two screws (N).
Fig 4
5.3 Mains connection
Mains connection and any extension
cords used must comply with
applicable regulations.
The mains voltage must comply with
the information on the machine licence
plate.
The mains connection must have a 10
A surge-proof fuse.
Only use power cords marked H07RN-
F
Connections and repairs to the
electrical equipment may only be
carried out by qualified electricians.
5.4 Dust connection
Before initial operation, the machine
must be connected to a dust collector.
The suction should switch on
automatically when the belt sander is
switched on.
Flexible hoses must be of non-
flammable quality, and must be
connected to the dust collector ground
system.
Mounting canister filter (Option)
(Article No.: 708434)
The disc sander has a built in fan
designed to suck the saw dust away
from the sanding disc and exhaust
through the dust port.
Remove the dust port that came with
the sander.
Mount the plastic elbow (A, Fig 5) to
the sander using the same hardware
(B) from the dust port.
Connect the filter (C) to the elbow and
turn counter-clockwise so that it locks
in place.
Fig 5
Warning:
Static electricity will build up in the
filter during operation. The filter
ground must be attached to the
machine ground, and to the filter.
Failure to comply may result in
fire/loss of property, or personal injury.
Attach the end of the grounding wire to
the screw (D).
Attach the grounding clip (E) to the
metal part of the filter.
This will prevent static electricity.
5.5 Starting operation
You can start the machine with the
green ON-button. The redOFF-button
on the main switch stops the machine.
After you have turned“OFF” the
sander you can press the brake (B,
Fig 5) to stop the sanding disc rapidly.

6. Machine operation
Warning:
Avoid kickback by sanding in
accordance with directional arrow.
Sand on downward side of disc only.
Sanding on the upward side could
cause the workpiece to fly up causing
injury!
Never sand with the sanding disc
guard not in place.
Failure to comply may cause serious
injury!
Feed the workpiece straight across the
machine table, holding your fingers
close together, guiding the workpiece
with the palm of your hands.
Don’t put your hands under the
machine table.
Always keep your hands well clear of
the moving sanding disc.
When working complex shapes, make
jigs and guides to guide the workpiece
properly and safely.
Support long workpieces with helping
roller stands.
For bevel sanding the table can be
tilted.
The centre point (A, Fig 6) provided
with the machine can be used for
circular sanding. Adjust the radius and
tighten the set screws.
Fig 6
The filler bar (H, Fig 6) should be
added when sanding small
workpieces.
Secure in place with the socket head
cap screw (I). When not using the
filler bar thread the socket head cap
screw in the tapped hole as a stop.
7. Setup and adjustments
General note:
Setup and adjustment work may
only be carried out after the
machine is protected against
accidental starting by pulling the
mains plug.
7.1 Sanding disc replacement
Disconnect the machine from the
power source (pull mains plug).
Remove the sanding disc guard (O,
Fig 4).
Fig 7
Remove the knobs (J, Fig 7) washers
(K), trunnion holders (L) and the
machine table (M).
Remove the old sanding disc.
Make sure the disc plate is clean
before you attach the new sanding
disc.
Reattach the machine table and the
sanding disc guard.
7.2 Table adjustment
Disconnect the machine from the
power source (pull mains plug).
Use a square (A, Fig 8)on the sanding
disc to exactly align the table to 90°.
Fig 8
Set the 90° stop screw (C, Fig 8) and
lock the nut (D).
Set the pointer so that it reads 0°.
Fig 9
If adjustment of 45°stop is needed,
loosen the hex nut (H, Fig 9) and
adjust the socket head cap screw (G).
Always maintain a gap of
approximately 2mm between the table
edge, and disc.
If adjustment is necessary loosen hex
cap bolts (I).
Move the mitre gauge and inspect the
parallelism of the movement in
regards to the sanding disc.
If the mitre guidance is not parallel
loosen the hex cap bolts (I) and adjust.
8. Maintenance and inspection
General note:
Maintenance, cleaning and repair
work may only be carried out after
the machine is protected against
accidental starting by pulling the
mains plug.
Check sanding disc regularly for faults.
Replace a defective sanding disc
immediately.
Clean the machine regularly.
Inspect the proper function of the dust
extraction daily.
Defective safety devices must be
replaces immediately.
Repair and maintenance work on the
electrical system may only be carried
out by a qualified electrician.
Cleaning of Canister filter (Option)
Disconnect the machine from the
power source.
Take off the grounding clip and
remove the filter by turning clockwise.
Empty the contents into an appropriate
container.
The filter can be cleaned with a low
pressure air hose. Blow from the
outside of the filter to clean the dust
particles.

Install the filter and reattach the
grounding clip.
Note:
Wearing a particle mask/respirator for
protection against fine dust particles
during cleaning is highly
recommended
Clean the canister filter frequently to
keep the sander’s performance at its
optimum.
9. Trouble shooting
Motor doesn’t start
*No electricity-
check mains and fuse.
*Defective switch, motor or cord-
consult an electrician.
Machine vibrates excessively
*Stand on uneven floor-
adjust stand for even support.
Sanded edge not square
*Table not square to sanding disc-
Adjust positive stop for 90.
Sanding marks on the wood
*Workpiece was held still-
keep workpiece moving.
*Wrong grit sanding disc-
use coarser grit for stock removal
and fine grit for finish sanding.
*Feed pressure too high-
never force the wood.
10. Available accessories
Stock number 708438
Open stand.
Stock number 708434
Canister filter
Refer to the JET-Pricelist
for various grit sanding discs.