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5.0 OPERATING INSTRUCTIONS
5.1
Preparations – before driving/extracting piles.
It is the excavator operator's responsibility to ensure that the equipment is functioning
and performing correctly and that the EMV method of piling is implemented efficiently.
In order to meet this responsibility please note the following points:-
a.
b.
c.
d.
e.
f.
g.
h.
5.2
Driving Piles
e.
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 pitched, so that there is
enough distance to allow safe insertion of the lifting chain through the hole at the
top of the pile.
c.
Check which way around the pile has to be lifted before inserting the lifting chain
– was the previous pile pitched left or right handed? Insert the lifting chain
correctly (no twists, knots etc) through the lifting hole in the pile and secure the
Chain Clamp.
Bundles of sheet piles should be set out on the job site so as to minimise the
amount of handling and travelling required with the EMV.
Ensure that all piles have ∅40mm(∅1.5") holes cut in them approximately
250mm(10") down from the top edge prior to commencement of the piling
operation.
Allow the excavator engine to warm up, particularly in temperatures below
minus 10°C and warm the excavators hydraulic system by, for example,
tracking backwards and forwards – this avoids the EMV's blow-off valve
spitting oil on initial start-up.
Before work commences slowly operate the bucket ram lever in both
directions. It is particularly important that the vibrator is allowed to run
freely for approximately 30 seconds, this allows the gearbox oil to reach all
the necessary lubricating points.
Review section "2.1 Basic Safety Points" in this manual before starting
work.
Review section "6.1 Daily Maintenance" before taking the equipment into
service.
It is particularly important that you make sure that during a piling operation
the vibrator is kept directly above and in line with the pile, otherwise the
piling energy is transferred to the excavator arm and causes unnecessary
wear and may lead to pile damage.
Ensure the vibrator jaws fully cover the pile before being closed with 54
tonnes of forces, otherwise damage may occur to the jaw and clamp
assembly due to uneven loading.
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