Dawson 5600D EMV550v3, Operator'S Instructions/Spare Parts List

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d. Clear all personnel standing in the Danger Area and lift up the pile until it just
hangs freely off the ground.
e. Lower the pile slowly so that the pile can be correctly inserted into the clamp.
Once firmly inserted, close the jaws.
f. Manoeuvre the pile to the insertion point and push the pile slowly into the ground.
Plumb the pile and ensure all personnel are out of the Danger Area.
g. Start the vibrator and adjust (crowd) the hydraulic rams so that the vibrator is level
and always sits directly on top of the pile as it goes into the ground. Do not over
push the vibrator - stop pushing when the gearbox starts to vibrate against the
rubber stops on the underside of the saddle (the deflection is approximately
146mm (5.75”) at this point).
h. When the pile has reached the required depth turn the vibrator off by returning the
control lever to the central position and allow all vibrations to stop. Release the
hard jaws from the pile by slowly operating the control lever in the opposite
direction. Do not operate the control lever from one extreme position to the other
whilst the EMV is running – it will cause hydraulic system pressure spikes to
occur.
i. Remove the chain clamp and lifting chain from the pile lifting hole.
j. Repeat steps b-j to continue.
k. When piling progress is less than 100mm/min (4ins/min) release ground
resistance by augering or by water jetting. Under no circumstances should the pile
be forced any further.
5.3 Extracting Piles.
a. Ensure that all safety procedures and maintenance has been carried out before
starting the excavator – see section 5.1.
b. Ensure that it is safe to move the dipper arm. Release the stand from the jaws of
the vibrator by operation of the retract bucket ram control function in the cab.
Manoeuvre the vibrator above one end of the pile to be extracted so that there is
enough distance to allow safe insertion of the lifting chain through the hole at the
top of the pile.
c. Insert the lifting chain correctly (no twists, knots etc) through the lifting hole in
the pile and secure the Chain Clamp. Under no circumstances should a pile be
pulled using the lifting chain only.
d. Clamp the vibrator onto the pile head ensuring that it is level. Ensure all
personnel are out of the Danger Area.