10 ► CD12
User Manual
GENERAL OPERATION
Tools included are for mounting and dismounting:
•
Single-head wrench
SW 24
•
Single-head wrench
SW 32
•
Single-head wrench
SW 41
•
Hex wrench
SW 5
DRILL BIT INSTALLATION
Before changing the drill bit, ensure the tool is
disconnected from the hydraulic power source, to
avoid unintentional operation of the tool and injury.
Use one SW24 or SW41 single-head wrench and one
SW 32 single-head wrench to unscrew the drill bit.
DIMENSION OF THE DRILL BIT
Drill head thread: male 1 – 1/4 in. UNC and female R
1/2 in.
Which drill bit at which speed?
Gear #1 Gear #2
Gear #3
Speed (1/min)
610
1440
2880
Drill bit dia. (mm)
100–162 40–100
20–40
Cutting speed (m/s)
3.2–5.6
3.2–7.2
3.2–6.4
CHECK THE POWER SOURCE
1.
Using a calibrated flowmeter and pressure gauge,
ensure the hydraulic power source develops a flow
of 7–9 GPM/26–34 LPM at 950–2000 psi/66–138
bar.
2. Ensure the hydraulic power source is equipped with
a relief valve, set to open at 2100–2250 psi/145–155
bar.
3. Check that the hydraulic circuit matches the tool for
open-center (OC) operation.
CHECK THE TOOL
1. Ensure all tool accessories are correctly installed.
Failure to install tool accessories properly can result
in damage to the tool or personal injury.
2. Check the equipment for signs of oil leaks. If leaks
are observed, do not use the tool.
3. Check fasteners for tightness.
4.
Check the tool and hydraulic system for proper
operation and performance.
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 tool fittings. Connect the return hose first and
disconnect it last to reduce trapped pressure in the
tool.
Note: If uncoupled hoses are left in the sun, pressure
increase within the hoses can make them difficult to
connect. When ever possible, connect the free ends
of hoses together.
3. Observe the flow indicators stamped on the hose
couplers to ensure that the flow is in the proper
direction. The female coupler on the drill is the inlet
coupler.
4.
Cycle the control valve momentarily. If the drill does
not operate, the hoses may be reversed. Verify
correct connection of the hoses before continuing.
USING CD12 WITH ANCHOR STAND
The anchor stand may be used with a vacuum pump
for vacuum hold down, or with a concrete anchor screw
to hold the stand in place while drilling. The standard
arrangement of the anchor stand is for use with a
vacuum pump.
Use of vacuum to hold the anchor stand on non-
horizontal surfaces is not recommended. Loss of
vacuum will allow the stand to slip or fall. The result
may be personal injury or damage to the drill.
The carriage feed handle may be installed on either end
of the pinion gear spindle. Align the cross-screw in the
handle, with the slot in the spindle. Push the handle on
until the spring detent in the handle snaps into the
groove on the spindle.
ATTACHING THE CORE DRILL TO THE ANCHOR
STAND
1.
Back out the drill mount locking screw, located in
the carriage. Slide the dovetail block, attached to the
core drill, into the carriage.
2. Tighten the drill mount locking screw into the dovetail
OPERATION
Содержание CD12
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