Putting Into Operation; Pipe Milling Machine Partially In Explosion-Proof Design; Handling; Starting Procedure - Fein RSG Ex 1500 A Bedienungsanleitung

3 41 01 261 06 0.book Seite 21 Montag, 16. April 2018 12:03 12

Putting into operation.

Electric pipe milling machine:
The pipe milling machines with electric
B
drive have an upstream switchgear combi-
nation that contains the following compo-
nents:
-Main switch/reversing switch
-Motor protection switch
-Undervoltage release
-Plug connections
The main switch is used for switching on
and for reversing the direction of rotation.
The motor protection switch and the
undervoltage release form one unit. In the
case of overload, the motor protection
switch switches off; if there is a power cut,
the undervoltage trip disconnects the pipe milling machine from the
mains in order to prevent it from starting again unintentionally.
The pipe milling machine is put into operation again by actuating the
motor protection switch.
The switchgear combination is to be positioned such that it is acces-
sible for the operator at all times.

Pipe milling machine partially in explosion-proof design:

In front of the switchgear combination use
C
a switch box with additional ON/OFF
switch for actuating the pipe milling
machine in areas in Zone 2 where there is
risk of explosion.
The switch box is to be positioned such
that it is accessible for the operator at all
times.
!
Danger of explosion
The switchgear combination is to be set
up outside Zone 2.
!
After actuating the automatic circuit
breaker, the auxiliary switch must be swit-
ched off first prior to switching on again.
Pneumatic pipe milling machine:
The model RDG 1500 A/B (**) is operated by the ball valve moun-
ted on the compressed-air hose; the ball valve is directly in front of
the pneumatic motor.

Handling.

!
Risk of injury
The guard must be completely closed and locked during operation!

Starting Procedure

For pipe milling machines with an electric motor, it is important to
ensure that the direction of rotation of the tool is correct. The rota-
tion direction can be reversed with the reversing switch on the
switchgear assembly.
Shut off the feed via the feed switching lever (28).
Switch the pipe milling machine on.
Release clamping lever (11) and with the hand crank, pivot the
running cutter/saw blade as close as possible to the pipe. Plun-
ging the saw blade deeply into the pipe stabilises the cutting pro-
cedure.
For milling, choose the slightest possible tool depth. The removal
volume increases as the cutting depth increases.
Plunge the cutting tool approx. 3 mm deeper than necessary;
then return to the necessary depth; the cutting tool is then out
of contact.
When using the depth scale, allow the cutter/saw blade to
slightly graze against the pipe surface. Loosen the knurled nut
(27) and set the pointer (28) to 0. Tighten knurled nut (27) again.
The feed depth can be read off the scale.
Switch off the pipe milling machine.
Afterwards, lock the setting by tightening clamping lever (11).
Switch the pipe milling machine on again.
Switch on the feed via the feed switching lever (28).
Provided the motor power is sufficient the pipe wall should be
cut in one operation.
Pipes that have already been laid can sag during sawing and
wedge the cutting tool in the slit. For this reason, the wedges
supplied with the machine must be knocked into the slit at regu-
lar intervals behind the sawing tool. In areas where there is risk
of explosion, use wedges (6 33 05 013 00 2)
(RSG Ex 1500 a/b (**) standard accessories) and a hammer
made of a non-sparking material.
Avoid overloading the pipe milling machine.
The machine is overloaded if the motor speed noticeably drops
when inserting the running cutting tool. This also results in a
decrease in the chip-removal volume.
At the same time, this results in a drop of the cutting perfor-
mance.
Affix the workpiece (the pipe being sawn off), to protect it from
falling down.
For pipes with a thick wall (s > 10 mm) the welded joint must be
milled in several operations.
Congruence in the cutting procedure is influenced by the following
factors:
- Alignment of the pipe milling machine at the beginning,
- Geometric deviation of the pipe from the circular or cylindrical
form,
- Sharpness of the cutting tools,
- Hardness of the material.
The pipe milling machine is adjusted in such a way that for pipe dia-
meters of 300 mm and 600 mm the beginning and end of the cut-
ting line are approximately in line.
Due to the eccentricity of the guide shaft, the adjustment mark
(24, see Fig. D) is only binding for the two given diameters. For lar-
ger pipe diameters it may be necessary to make a readjustment.
Reverse run of the pipe milling machines (RSG (**)/
RSG Ex (**)).
Avoid damage!
Before the pipe milling machine is reversed, ensure that the cutting tool
is retracted, in order to avoid damaging the tool and the gears.
Shut off the feed via the feed switching lever (28).
Release clamping lever (11)
Retract the cutting tool.
Turn the main switch/reversing switch to position "0" (OFF).
Switch the reversing switch to reverse run.
Tighten clamping lever (11).
Switch on the feed via the feed switching lever (28).
The pipe milling machine is not suitable for cutting in reverse run!
Reverse run is not possible with the pneumatic pipe milling machine!
en
21