HMPRO50 OPERATOR’S MANUAL
www.holemaker.com
5
GROUNDING INSTRUCTIONS
POWER SUPPLY REQUIREMENTS
WARNING!
Improperly connecting the grounding wire can result in the risk of electrical shock.
Prior to use check condition of the power cord, which has to be free of any cuts, or similar damages.
Attention!: This unit has a class one of insulation and
absolutely requires the power source
to be equipped with a protection circuit.
Power source should be protected with the difference-current circuit cut-out and protected with a 10A fuse - for 230V.
At building sites, power should be supplied from a separation transformer such as Type AVM, with minimum power of
2000 VA and with second class protection.
Check with a qualified electrician if you are in doubt as to whether the outlet
is properly grounded. Do not modify the plug provided with tool. Never remove
the grounding prong from the plug. If the cord or plug is damaged, have it
repaired before using. If the plug will not fit the outlet, have a proper outlet
installed by a qualified electrician. The Holemaker must be plugged into an
appropriate outlet, properly installed and grounded in accordance with all codes
and ordinances. The plug and outlet should look similar to those in Figure A.
If in doubt of proper grounding, call a qualified electrician.
WARNING!
DO NOT USE HOLEMAKER DRILLING MACHINES ON SURFACES OR MATERIALS BEING
WELDED
.
DOING SO CAN RESULT IN DAMAGE TO THE DRILLING MACHINE.
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 damaged cords. Make sure your extension cord is in good condition. When using
an extension cord, be sure to use one heavy enough to carry the current your product will draw. An undersized cord
will cause a drop in line voltage resulting in loss of power and overheating. See table for the correct size to use
depending on cord length and nameplate amperage rating. If in doubt, use the next heavier gauge. The smaller the
gauge number, the heavier the cord.
12-16
VOL TS
240V
AMPERAGE
0-6
6-10
10-12
14
RECOMMENDED WIRE GAUGE
12
MINIMUM GAUGE FOR EXTENSION CORDS
TOTAL LENGTH OF CORD IN METRES
0 - 15
15 - 30
30 - 60
60 - 90
18 16 16 14
18 16 14 12
16 16 14 12
NOT RECOMMENDED
DRIP LOOP: To help prevent cutting fluids from traveling
along power cord and contacting power source, tie a drip
loop in power cord as shown in Figure C.
5
Summary of Contents for HMPRO50
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