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 JDP-840VADT drill press 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. Warranty
3. Safety
Authorized use
General safety notes
Remaining hazards
4. Machine specifications
Technical data
Noise emission
Contents of delivery
Machine description
5. Transport and start up
Transport and installation
Assembly
Mains connection
Initial lubrication
Starting operation
6. Machine operation
Manual drilling
Micro down feed
Automatic downfeed
Tapping operation
7. Setup and adjustments
Removing the chuck and arbour
Changing spindle speeds
Auto feed overload protection
8. Maintenance and inspection
9. Trouble shooting
Frequency inverter
10. Environmental protection
11. 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. Warranty
The Seller guarantees that the
supplied product is free from material
defects and manufacturing faults. This
warranty does not cover any defects
which are caused, either directly or
indirectly, by incorrect use,
carelessness, accidental damage,
repair, inadequate maintenance or
cleaning and normal wear and tear.
Guarantee and/or warranty claims
must be made within twelve months
from the date of purchase (date of
invoice). Any further claims shall be
excluded.
This warranty includes all guarantee
obligations of the Seller and replaces
all previous declarations and
agreements concerning warranties.
The warranty period is valid for eight
hours of daily use. If this is exceeded,
the warranty period shall be reduced in
proportion to the excess use, but to no
less than three months.
Returning rejected goods requires the
prior express consent of the Seller and
is at the Buyer’s risk and expense.
Further warranty details can be found
in the General Terms and Conditions
(GTC). The GTC can be viewed at
www.jettools.com or can be sent by
post upon request.
The Seller reserves the right to make
changes to the product and
accessories at any time.
3. Safety
3.1 Authorized use
This drill press is designed for drilling
wood and machinable metal and
plastic materials only.
Machining of other materials is not
permitted and may be carried out in
specific cases only after consulting
with the manufacturer.
Never cut magnesiumhigh danger of fire!
The workpiece must allow to safely be
loaded and clamped for machining.
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 covers must
be mounted.
In addition to the safety requirements
contained in these operating
instructions and your country’s
applicable regulations, you should
observe the generally recognized
technical rules concerning the
operation of wood- and metal-working
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
Wood and metalworking machines
can be dangerous if not used properly.
Therefore the appropriate 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
power 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.
Wear goggles when working
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 a 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.
Never reach into the machine while it
is operating or running down.
Stay alert!
Give your work undivided attention.
Use common sense. Do not operate
the machine when you are tired.
Keep an ergonomic body position.
Maintain a balanced stance at all
times.
Do not operate the machine under the
influence of drugs, alcohol or any
medication. Be aware that medication
can change your behaviour.
Keep children and visitors a safe
distance from the work area.
Never leave a running machine
unattended.
Before you leave the workplace switch
off the machine.
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.
Before machining, remove any nails
and other foreign bodies from the
workpiece.
Work only with well sharpened tools.
Machine only stock which rests
securely on the table.
Always close the chuck guard and
pulley cover before you start the
machine.
Remove the chuck key and wrenches
before machine operation.
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.
Make all machine adjustments or
maintenance with the machine
unplugged from the power source.
Never place your fingers in a position
where they could contact the drill or
other cutting tool if the work piece
should unexpectedly shift or your hand
should slip.
Secure workpiece against rotation.
Use fixtures, clamps or a vice to hold
the workpiece.
Never hold the workpiece with your
hands alone.
Whenever possible, position the work
piece to contact the left side of the
column.
If it is too short or the table is tilted,
clamp solidly to the table.
Use the table slots or clamping ledge
around the outside of the table.
When using a drill press vice, always
fasten it to the table.
Never do any works “freehand” (handholding the work piece rather than
supporting it on the table), except
when polishing.
Securely lock the head to the column
and the table bracket to the column
before operating the press.
Never move the head or the table
while the machine is running.
If a work piece overhangs the table
such that it will fall or tip if not held,
clamp it to the table or provide
auxiliary support.
Do not use wire wheels, router bits,
shaper cutters, circle cutters, or rotary
planers on this drill press.
3.3 Remaining hazards
When using the machine according to
regulations some remaining hazards
may still exist.
The rotating drill bit can cause injury.
Thrown workpieces and workpiece
parts can lead to injury.
Dust, chips and noise can be health
hazards.
Be sure to wear personal protection
gear such as safety goggles, ear
protection and dust mask. Use a
suitable dust collection system.
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
Drill capacity in steel (St37) 40mm
Tapping capacity M20
Spindle to column 264mm
Spindle travel 150mm
Spindle taper MT-4
Column diameter 115mm
Table size 560 x 475 mm
T-slot size 16mm
Distance spindle nose / table 600mm
Distance spindle nose / base 1130mm
Number of speeds variable
Range of speeds I 65 – 540 rpm
Range of speeds II 245 – 2000 rpm
Automatic downfeeds
0,05 / 0,1 / 0,2 mm/rev
Coolant tank volume 8 Liter
Coolant pump 72 W
Overall L/W/H
915x560x1970 mm
Net weight 382 kg
Mains 400V ~3L/PE 50Hz
Output power 1.5 kW (2 HP) S1
Reference current 3,7 A
Extension cord (H07RN-F)4x1.5mm²
Installation fuse protection 10A
4.2 Noise emission
(Inspection tolerance 4 dB)
Acoustic pressure level
(according to EN ISO 11202):
Idling LpA 69,6 dB(A)
In operation LpA 79,0 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
16mm keyless chuck, B18
MT-4 / B18 arbour
Chuck guard
Table rising crank (2x)
Coolant facility
Drift key
Operating tools
Assembly kit
Operating manual
Spare parts list.
4.4 Description of the machine
A…...Motor
B…..Electric Box
C….High / Low speed select switch
D….Scale ring lock knob
E….Down feed handle lock
F….Down feed handles
G….Coolant nozzle
H….Rack
I…...Coolant pump
J…..Base with coolant tank
K….Table lifting handwheel
L…..Table locking handle
M….Working table
N….Drill chuck
O….Chuck guard
P….Micro feeding handwheel
Q….Drill / Tap depth stop
Fig 2
R….Spindle OFF-button
S….Drill / Tap select switch
T….Spindle reverse jog-button
U….Digital readout
V….Variable speed select knob
W…Coolant On/Off switch
X….Spindle ON-button
Y….Emergency stop button
5. Transport and start up
5.1 Transport and installation
The machine will be delivered in a
closed crate.
For transport use a forklift or hand
trolley. Make sure the machine does
not tip or fall off during transport.
Danger of tipping due to high gravity
center!
The machine is designed to operate in
closed rooms.and must be placed
stable on a firm and levelled ground.
A minimum distance of 800mm
towards a rear wall must be kept (for
access to the electrical box).
The machine must be bolted down.
For packing reasons the machine is
not completely assembled.
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 e.g. petroleum.
(Note: lacquer thinner or similar can
destroy the paint).
Attach the table lifting handwheel (K)
and the table locking handle (L).
Mounting machine to the floor:
Unbolt the machine from the shipping
crate.
Use heavy duty fibre belts (AA, Fig 4)
for lifting the machine off the pallet.
Fig 1
Fig 3
Z…Feed select switch
Fig 4
Caution:
The machine is heavy! 382kg
Assure the sufficient load capacity
and proper condition of your lifting
devices.
Never step underneath suspended
loads.
Carefully place the machine to the
floor.
Use 4 anchor bolts of sufficient size
and length.
Use a machinist’s precision level to
make sure that the machine table is
level.
Loosen mounting bolts, shim and
tighten mounting bolts if needed.
The machine must be level to be
accurate.
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 H07RNF
Connections and repairs to the
electrical equipment may only be
carried out by qualified electricians.
ATTENTION:
- If the direction of rotation is not
correct, the phase converter inside the
CCE Euro plug must be pushed in and
turned 180°.
5.4 Initial lubrication
The machine must be serviced at all
lubrication points before it is placed
into service!
Failure to comply may cause serious
damage.
(see chapter 8 for lubrication)
The coolant tank has to be filled with
coolant.
5.4 Starting operation
Before starting the machine check
the proper chucking.
You can start the machine with the
green ON-button (X, Fig 5).
The red OFF-button (R) stops the
machine.
Fig 5
The emergency stop button (Y) stops
all machine functions.
Attention:
The machine still has electric power!
Turn emergency stop button clockwise
to reset.
Use the variable speed select knob (V)
to set the speed.
The digital readout (U) shows the
spindle speed.
6. Machine operation
Always adjust the table and the depth
stop to prevent drilling into the table or
vise.
Secure workpiece to the table with
clamps or a vice to prevent rotating
with the drill bit.
T-slot size is 16mm.
Feed the bit into the material with only
enough force to allow the drill bit to
work.
Feeding too slowly may cause burning
of the workpiece.
Feeding too quickly may cause the
motor to stop and/or the drill bit to
break.
Recommended speeds for a 10mm
HSS drill:
Wood: 2000 RPM
Plastic: 1500 RPM
Aluminium: 1500 RPM
Brass: 1500 RPM
Cast iron: 1000 RPM
Mild steel: 800 RPM
High carbon steel: 600 RPM
Stainless steel: 300 RPM
Generally speaking, the smaller in
relation the drill bit, the greater the
RPM required.
Wood requires higher speeds than
metal.
Metal is usually drilled at slower
speeds; cutting oil is applied if
necessary.
Warning:
Always keep your hands well clear of
the rotating bit.
Never place your fingers in a position
where they could contact any rotating
tool, chuck or cutting chips.
Do not remove chips and workpiece
parts until the machine is at a
standstill.
Always close the chuck guard and
pulley cover before you start the
machine.
When using a drill press vice, always
fasten it to the table.
Never do any works “freehand” (handholding the work piece rather than
supporting it on the table), except
when polishing.
Support long workpieces with helping
roller stands.
Do not use wire wheels, router bits,
shaper cutters, circle cutters, or rotary
planers on this drill press.
Never cut magnesiumhigh danger of fire!
In case of danger push the
emergency stop button.
Machine at rest:
If the drill press is not used for a
longer time, pull the mains plug and
protect all blanc surfaces.
6.1 Manual drilling
Set the feed select switch (Z, Fig 3) to
“0“ position.
Tighten the downfeed handle lock
knob (E, Fig 6).
Rotate the scale ring to the desired
drill depth and tighten the lock knob
(D).
Engage the feed mechanism by
pushing out the down feed handles
(F).
Rotate the micro-feeding hand wheel
(P).
The spindle will feed down until the set
drill depth has been reached.
The feed will disengage and the
spindle will return to the top by spring
force.
6.3 Automatic down feed
Adjust the desired power down feed
(Z, Fig 8).
Rotate the scale ring to the desired
drill depth and tighten the lock knob
(D).
Start the machine (X, Fig 5)
Engage the feed mechanism by
pushing out the down feed handles
(F).
The spindle will feed down
automatically until the drill depth has
been reached.
The auto feed will disengage and the
spindle will return to the top by spring
force.
CAUTION:
Do not let feeding depth exceed
spindle stroke.
If not in use, disengage the power
down feed mechanism.
Set the auto-feed select switch (Z, Fig
3) to “0“ position.
Reference values for feed speed
The feed speed depends on the drill
bit diameter and the material of the
workpiece.
Fig 6
Loosen the scale ring lock knob (D).
Set the depth stop (Q) to the desired
position.
6.2 Micro down feed
Set the feed select switch (Z, Fig 3) to
“0“ position.
Move the depth stop (Q, Fig 7) to the
highest position.
Fig 7
Loosen the downfeed handle lock
knob (E).
Lower the spindle until the drill bit
touches the workpiece.
Fig 8
Loosen the downfeed handle lock
knob (E, Fig 9).
Move the depth stop (Q, Fig 7) to the
highest position.
Fig 9
Lower the spindle until the drill bit
touches the workpiece.
The larger the drill bit and the harder
the workpiece, the lower the feed
speed and the lower the spindle rpm.
HSS-drill bit in material steel (C15):
Fig 10
6.4 Tapping operation
For tapping operations the spindle
speed must be below 150 rpm.
The machine setup must be as
follows.
4) Tighten the downfeed handle lock
knob (E, Fig 11).
Fig 11
1) Set the feed select switch (Z, Fig 3)
to “0“ position.
2) Set the select switch (S, Fig 2) to
the “Tapping“ position.
3) Loosen the scale ring lock knob (D,
Fig 11).
5) Set the depth stop (Q) to the
desired position.
The spindle will auto-reverse at this
point.
7. Setup and adjustments
General note:
Setup and adjustment work may
only be carried out after the
machine is protected against
accidental starting.
Push the E-stop button, pull the
mains plug!
7.1 Removing the Chuck and Arbour
Disconnect from the power source.
Push the E-stop button!
Lower the quill using the down feed
handle.
Lock the quill in lowered position by
installing the supplied index pin (A, Fig
12) sichern.
Fig 12
Rotate the spindle to align the key in
the spindle with the key hole in the
quill.
Insert the drift key into the aligned
slots and tap lightly.
We recommend to use the rapid drift
key (Fig 13).
JET article number: 10002086
Fig 13
Hold the chuck and arbour assembly
by hand (or a protected table) as it
falls away from the spindle.
7.2 Changing Spindle Speeds
Two different speed ranges can be
selected on the gearbox (C, Fig 1).
Use the variable speed select knob (V,
Fig 2) to set the spindle speed.
The digital readout (U) displays the
actual speed.
7.3 Auto feed overload protection
The auto feed mechanism is equipped
with an overload protection clutch.
First the downfeed will stop, then the
feed handles will disengage and the
spindle will return to the top by spring
force.
Stop the machine immediately under
this condition.
Check the job-setup:
Make sure that the drill bit is sharp and
the machine adjustments are correct.
Wenn die Maschine beim Betrieb mit
automatischem Vorschub überlastet
wird, kommt die Ueberlastkupplung
zum Einsatz.
Der Vorschub setzt bei laufender
Spindel aus, es fallen die
Vorschubhebel und Pinole
automatisch in die Ausgangsstellung
zurück.
Ist dies der Fall, die Maschine sofort
abstellen.
Ueberprüfen Sie das Werkzeug
(Schärfe) und die
Maschineneinstellungen.
Adjustment:
The overload protection clutch has
precisely been adjusted ex works and
may only be readjusted by a qualified
person.
If the job setup is correct and the
overload clutch reacts, it may be
adjusted as follows:
Remove the „overload protection“
cover plate.
Tighten the nut clockwise by ¼ turn
(Fig 14).
Fig 14
Test the auto feed drilling
performance. If needed, repeat the
adjustment.
Reinstall the cover plate.
ATTENTION:
Overtightening the clutch may damage
the feed mechanism.
8. Maintenance and inspection
General notes:
Maintenance, cleaning and repair
work may only be carried out after
the machine is disconnected from
the power source. Pull the mains
plug!
Clean the machine regularly.
Defective safety devices must be
replaced immediately.
Repair and maintenance work on the
electrical system may only be carried
out by a qualified electrician.
Changing oil:
Drain oil after first month of operation.
by removing drain plug and refill with
oil.
Gear box oil (SAE 90)
Then change the oil annually
(respectively every 700 operating
hours).
Weekly lubrication:
Once a week lubricate gently with
grease.
-the teeth of the quill
-the column-rack
Coolant facility:
Pour 8 litres of coolant mix into the
coolant tank (Z, Fig 15).
Fig 15
Follow coolant manufacturer’s
recommendations for use, care and
disposal.
9. Trouble shooting
Motor doesn’t start
*No electricitycheck mains and fuse.
*Defective switch, motor or cordconsult an electrician.
*Inverter Failuresee chapter 9.1
Chuck will not stay on spindle
*Oil or grease on contact surfacesclean the tapered surfaces of chuck
and spindle.
Machine vibration
*Dry spindle quilllubricate spindle quill.
*dull drill bitresharpen drill bit.
Drill bit burns
*incorrect speedreduce speed.
*Chips cloggedretract drill bit frequently
*dull drill bitresharpen drill bit.
*feeding too slowfeed faster.
Drill leads off
*cutting lips or angle not equalresharpen drill bit correctly.
*drilled hole off centredrill a pilot hole first.
*bent drill bituse a proper drill bit.
*drill bit not properly installedinstall drill bit correctly.
9.1 Frequency inverter
Installation and repair of the frequency
inverter may only be carried out by a
qualified electrician.
The following points have to be
observed:
1) Disconnected from the power
source. Pull the mains plug!
2) Electronic components are very
sensitive, do not touch with bare
hands or non-isolated metal tools.
3) The DC-capacitor remains under
voltage, even when the machine is
disconnected from mains.
Assuer that all LED´s are off before
you start service work.
4) Avoid electrostatic charging.
Ground connect the inverter baseplate.
5) Never connect to motor output
terminals (U/V/W) to the main power
supply (AC).
6) The frequency inverter is equipped
with diagnostic software.
The machine will stop and the error
code will be displayed on the LED
display.
Push the “Reset” button to restart the
frequency inverter.
Error codes:
o.H.
* Inverter overtemperatureInspect ventilation holes and cooling
fins for dust and debris
o.L / o.L. I / o.L.2
* Motor overloaded.Reduce motor load.
O.C. / o.c.A. / o.c.n. / o.c.d.
* Abnormal currant increaseInspect motor connection and
isolation.
c.F.I / c.F.2 / c.F.3
* Inverter internal errorStop the machine and restart.
C.F.F.
* Fuse failure, ground failureInspect the power supply, fuses and
ground connection
Stop the machine and restart.
10. Environmental protection
Protect the environment.
Your appliance contains valuable
materials which can be recovered or
recycled. Please leave it at a
specialized institution.
11. Available accessories
Refer to the JET-Pricelist.
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