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2. DD-80 E/RA diamond coring machine
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Ž
3. Safety
3.1 Safety precautions on the jobsite
Before beginning work with the
machine, read the operating instruc-
tions carefully and ensure that the
safety precautions listed below are
observed.
I
Ensure that no electric cables,
gas or water pipes etc. are situated
where holes are to be cored.
I
Cables, pipes or other supply lines
situated in close proximity to where
holes are to be cored must be
switched off.
3.2a Grounding instructions
This tool should be grounded while
in use to help protect the operator
from electric shock. The tool is equip-
ped with a 3-conductor cord and
3-prong grounding type plug to fit the
proper grounding type receptacle. The
green (or green and yellow) conductor
in the cord is the grounding wire. Nev-
er connect the green (or green and
yellow) wire to a live terminal.
If your unit is for use on less than
150 V, it has a plug that looks like that
shown in sketch (A) in Figure 1. If it is
for use on 150 to 250 V, it has a plug
that looks like that shown in sketch
(D). An adapter, see sketches (B) and
(C), is available for connecting sketch
Printed: 07.07.2013 | Doc-Nr: PUB / 5069606 / 000 / 00
Œ
I
The coring work must not have
a negative effect on the structural
design of the building (coring
through steel reinforcement!).
I
Cordon off areas where coring
work is taking place, particularly
behind walls or below floors which
are being cored through.
I
For overhead coring, the water col-
lector must be in good condition
and function correctly.
I
The coring system may only be
operated when an GFCI ground
fault circuit interruptor is connected
in the system.
(A) type plugs to 2-prong receptacles.
The green colored rigid ear, lug, or the
like, extending from the adapter must
be connected to a permanent ground,
such as a properly grounded outlet
box. No adapter is available for a plug
as shown in sketch (D).
3.2b Extension Cords
Use only 3-wire extension cords that
have 3-prong grounding-type plugs
and 3-pole receptacles that accept the
tool's plug. Replace or repair dam-
aged cords.
1. Drill stand
1.1 Stop
1.2 Feed locking device
1.3 Hexagon socket wrench
1.4 Carriage
1.5 Levelling screws
1.6 Feed lever or handwheel
2. Motor unit
2.1 On/off switch
2.2 Speed change switch
2.3 Chuck
2.4 Supply cord
2.5 Water connection
2.6 Water regulation valve
3. Water collector
3.1 Sealing disc
4. Water collector holder
4.1 Pressure adjustment screws
5. Vacuum baseplate
I
In order to provide safe, trouble-free
operation, the coring system must
be kept clean. (Do not clean using a
jet of water.)
I
Coring work should only be carried
out by trained personnel who have
received instruction on use of the
equipment.
I
When working with the vacuum
baseplate on walls an additional
means of securing the machine
must be employed
(see section 7.3).
I
If leakage occurs in the water
supply system, the equipment must
be serviced.
I
Do not touch rotating parts.
GROUNDING METHODS
metal screw
cover of grounded
outlet box
(A)
grounding pin
grounding
(C)
means
grounding pin
Figure 1
(B)
(D)
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