Total TRHLI1601, Quick Start Manual

Page: 8 / 11

8
Work tips
Following a few simple tips will reduce tool wear and the possibility of operator injury.
• The high efficiency available from rotary hammers can only be obtained if sharp
and well-maintained accessories are used.
• All hammers require a short period of time to warm up. Depending on the ambient
temperature, this time can vary from approximately 15 seconds (90F) to 2
minutes (32F).
•
A new hammer requires a break-in period before full performance is achieved.
This period may require up to 5 hours of operation.
•
To prolong the life of bits, bring the bit into contact with the workpiece before you
pull the trigger.
•
During operation, hold the drill firmly and apply moderate and constant pressure.
• Too much pressure at low speed will stop the hammer. Too little pressure will
prevent the bit from cutting and will cause excess friction as it slides over the
surface. This can damage the drill and bit.
•
Carbide Tipped Drill Bits - Used for drilling stone, concrete, cement, brick, cinder
block, and other unusually hard non-metallic materials.
•
The snags on all bits should be cleaned before use and immediately after
removal.
Remember these instructions for safe operation:
• All work must be supported or secured before drilling and constant, even
pressure must be applied in line with the bit.
•
As the bit passes through the opposite side, reduce pressure and continue to run
the drill while the bit is withdrawn.
•
Some materials require slow drilling speeds; while others require higher speed to
produce the best results. Materials such as glass, porcelain, ceramics, tiles,
plastics, etc., should be drilled at low speed with specially designed drill bits and
lubricants.
Drilling mode: drilling in wood or plastic
If a backing block is not used, ease off the pressure just before the bit goes through the
wood to prevent splintering. Complete the hole from the opposite side immediately after
the tip opens. If the bit binds, reverse the drilling operation to help remove the bit from
the work.
Drilling mode: metal
There are two rules for drilling hard materials:
•
First, the harder the material, the more pressure you need to apply to the tool.