Mains Connection; Initial Lubrication; Starting Operation - Jet GHD-22 Gebrauchsanleitung

Fig 3
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
16 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.
Connection takes place on the
appropriate terminal in the electrical
cabinet on the left side of the
machine.

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 (GHD-27 only, see chapter 8.3)

5.5 Starting operation

Before starting the machine check
the proper chucking (see chapter 7.2)
You can start the machine with the
green ON-button (N).
Fig 4
The red OFF-button (M) on the control
box stops the machine.
The emergency stop button (J) stops
all machine functions.
Attention:
The machine still has electric power!
Turn emergency stop button clockwise
to reset.
The Forward/Reverse switch (L) may
only be operated when motor power
has been stopped before.
WARNING:
Do not change the spindle running
direction while machine is running.
Improper operation may damage the
Fw/Rev switch and gears.
6. Machine operation
Warning:
Setup work may only be carried out
after the machine is protected
against accidental starting.
With pressed emergency stop
button.
Never place your fingers in a position
where they could contact any rotating
tool, chuck or cutting chips.
Remove cutting chips with the aid of
an appropriate chip hook when the
machine is at a standstill only.
Never stop the rotating chuck or tool
with your hands.
6
Always close the chuck guard before
you start the machine.
Secure work piece to the table with
clamps or a vice to prevent rotating
with the drill bit.
When using a vice, always fasten it to
the table.
Check the save clamping of the work
piece, chuck and tools before starting
the machine.
Never do any works "freehand" (hand-
holding the work piece rather than
supporting it on the table).
Support long work pieces with helping
roller stands.
Always adjust the depth stop to
prevent drilling into the table or into
the workholding device.
Feed a drill bit into the material with
only enough force to allow the drill bit
to work. Feeding too slowly may
cause burning of the work piece or
tool. Feeding too quickly may cause
the motor to stop and/or the drill bit to
break.
Do not use wire wheels or grinding
wheels on this machine.
Never cut magnesium-
high danger to fire!
Measurements and adjustments may
only be carried out when the machine
is at a standstill only.
In case of danger push the
emergency stop button.
6.1 Spindle speeds selection
The correct spindle speed depends on
the type of machining, the cutting
diameter, the material to be machined
and the cutting tool.
These are recommended max. speeds
for a 10mm high speed steel (HSS)
tool (e.g. drill bit).
Aluminium, brass
Cast iron
Mild steel
High carbon steel
Stainless steel
If a carbide (HM) tool is used about 5
times higher speeds can be chosen.
Generally speaking, the larger in
relation the cutting diameter, the
smaller the possible RPM.
1500 RPM
1000 RPM
800 RPM
600 RPM
300 RPM