10 ► DR19
User Manual
PREPARATION PROCEDURES
PREPARATION FOR INITIAL USE
The tool, as shipped, has no special unpacking or
assembly requirements prior to usage. Inspection to
assure the tool was not damaged in shipping and does
not contain packing debris, is all that is required.
CHECK HYDRAULIC POWER SOURCE
1.
Using a calibrated flow meter and pressure gauge,
check that the hydraulic power source develops a
flow of 7–9 GPM/26–34 LPM at 1500–2000 psi/105–
140 bar.
2.
Make certain the hydraulic power source is equipped
with a relief valve set to open at 2100–2250 psi/145–
155 bar minimum.
3. Check that the hydraulic circuit matches the tool for
open-center (OC) operation.
CHECK TOOL
1.
Make sure all tool accessories are correctly installed.
Failure to install tool accessories properly can result
in damage to the tool or personal injury.
2.
There should be no signs of leaks.
3. The tool should be clean, with all fittings and
fasteners tight.
CHECK TRIGGER MECHANISM
1.
Check that the trigger operates smoothly and is free
to travel between the
ON
and
OFF
positions.
INSTALL TOOL BIT
The tool accepts standard 7/8
×
3-1/4 inch hex shank
tool bits.
TO INSTALL A HEX SHANK TOOL BIT
1.
Push in the retainer, insert the hex shank tool bit and
move the retainer back into locked position. Note
the orientation of the particular tool bit that is being
installed.
CONNECT HOSES
1.
Wipe all hose couplers with a clean lint-free cloth
before making connections.
2.
Connect the hoses from the hydraulic power source
to the hose couplers on the tool. It is a good practice
to connect the return hose first and disconnect it last
to minimize or avoid trapped pressure within the
tool.
3. Observe flow indicators stamped on hose couplers
to be sure that oil will flow in the proper direction.
The female coupler is the inlet coupler.
Note: The pressure increase in uncoupled hoses
left in the sun may result in making them difficult to
connect. When possible, connect the free ends of
operating hoses together.
OPERATING PROCEDURES
1. Observe all safety precautions.
2. Move the hydraulic circuit control valve to the
ON
position.
3. Place the tool bit firmly on the surface you are to
work on.
4.
Squeeze the trigger to start the tool. Adequate down
pressure is very important.
Not for underwater use.
COLD WEATHER OPERATION
If the tool is to be used during cold weather, preheat
the hydraulic fluid at low engine speed. When using the
normally recommended fluids, fluid temperature should
be at or above 50° F/10° C (400 ssu/82 centistokes)
before use.
STORAGE
1.
Disconnect the tool from the hydraulic power source.
2.
Remove the tool bit and spray the tool bit retainer
area with WD-40™ inside and out.
3.
Wipe clean and store in a clean, dry place.
OPERATION
Summary of Contents for DR19
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