Milling Tools; Choice Of Cutter And Grinding Head; Cutter / Grinding Head Change; Replacing Grinding Wheels - Protool RGP 80-11 E Originalbetriebsanleitung

Protection from overloading
dependant on temperature
The safety electronics switches to cooling
regime when the critical temperature is
reached. Motor continues running at ap-
proximately 2500 min
stant electronics is deactivated.
After cooling to approximately 10 – 20 s, the
device is fully operational.
Heat protection for devices heated during
operation, reacts adequately sooner.
7

Milling tools

7.1 Choice of cutter and
grinding head
According to use and type of application,
there are various types of cutter heads. To
achieve optimal work results, use suitable
grinding heads.
Data in the Chart showing speed pre-selec-
tion options are recommended values only;
practice testing should be always performed
– see page 21!
7.2 Cutter / Grinding head
change
Before putting into operation, check perfect
run of the cutter tool: turn it manually.
Make sure that all screws are tightened up
well.
Four screws connecting the fl ange and the
head tool should be well-tightened up: use
torque 5 Nm.
Two screws fi xing the position of the head
on the machine should be well-tightened
up: use torque 8 Nm.
Do not leave any tools inserted in.

7.3 Replacing Grinding Wheels

WARNING
Danger of electrical injury. Unplug
any tool before handling.
If teeth of milling rings that are made of
hard alloy are worn, it is possible to replace
them. By means of turning the knob [1-5]
release the clamping belt to such extent so
as it is possible to move the suction fl ange
[1-7]. Turn the suction fl ange fully counter-
18
revolutions, con-
–1
clockwise and pull it downwards. Release
two bolts [2-1], [2-7] on four axes of tool
carrier using the hexagonal spanner S4.
Now, the milling cutters are easily accessi-
ble. When replacing milling rings replace also
bolts [2-1], [2-7] and excessive turn retain-
ers [2-2]. The bolts have been fi xed by light
adhesive agent so as they cannot be loosened
by vibrations. Only use originally supplied
bolts. Firstly, put three milling rings [2-4]
onto each axis, then the washer [2-3]; fas-
ten everything with the help of excessive
turn retainer [2-2] and bolts [2-1], [2-7]. It
is extremely important that you insert the
excessive turn retainer into corresponding
slot [2-5] located in tool carrier axis. If the
excessive turn retainers are not installed,
bolts could be loosened during operation;
this may cause major losses. Put on the
suction fl ange [2-10] so as sliding parts
[2-8] snap into corresponding slots [2-9]
located on suction fl ange. Set the milling
depth required and tighten the clamping
belt using the turning knob.
When installing the model with fl at teeth, it
is important that milling rings are installed
as shown in the Fig. [3]; it means that tips
must be oriented in the direction of milling
head rotation.
The model with spiked teeth (HM-SZ) is
used to remove old layers of paint from
concrete or plasters. The version with fl at
teeth (HM-FZ) is used for smoothening of
timbering gaps and for machining of con-
crete edges.
CAUTION
During work, inspect whether milling
rings still freely rotate on axes. If it is
not the case, e.g. due to accumulated
dust; it is necessary to remove it from
the milling head. For this reason the
machine should not be operated with-
out suction system connected!