Doosan 7/53 Operation And Maintenance Manual Download

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OPERATING INSTRUCTIONS

7/53

COMMISSIONING

Upon receipt of the unit, and prior to putting it into service, it is
important to adhere strictly to the instructions given below in

PRIOR

TO STARTING

Ensure that the operator reads and

understands

the decals and

consults the manuals before maintenance or operation.

Ensure that the position of the

emergency stop

device is known and

recognised by its markings. Ensure that it is functioning correctly and
that the method of operation is known.

Running gear drawbar -

Machines are shipped to some areas with

the drawbar removed. Fitting involves four nuts / bolts to secure the
drawbar to the axle and two bolts to fit the drawbar to the front of the
machine with the saddle and spacer block.

Support  the  front  of  the  machine,  fit  the  wheel  chocks  to  stop  the
machine  moving  and  attach  the  drawbar.  Refer  to  the  torque  value
table  in  the

MAINTENANCE

section of this manual for the correct

torque values.

Fit the propstand and coupling. Remove the supports and set the
machine level.

Before towing the unit, ensure that the tyre pressures are correct (refer
to the

GENERAL INFORMATION

section of this manual) and that the

handbrake is functioning correctly (refer to the

MAINTENANCE

section

of this manual). Before towing the unit during the hours of darkness,
ensure that the lights are functioning correctly (where fitted).

Ensure that all transport and packing materials are discarded.

Ensure that the correct fork lift truck slots or marked lifting / tie down
points are used whenever the machine is lifted or transported.

When selecting the working position of the machine ensure that there
is sufficient clearance for ventilation and exhaust requirements,
observing any specified minimum dimensions (to walls, floors etc.).

Adequate clearance needs to be allowed around and above the
machine to permit safe access for specified maintenance tasks.

Ensure that the machine is positioned securely and on a stable
foundation. Any risk of movement should be removed by suitable
means, especially to avoid strain on any rigid discharge piping.

Attach the battery cables to the battery(s) ensuring that they are
tightened securely. Attach the negative cable before attaching the
positive cable.

CAUTION:

This is a safety critical procedure. Double check the

torque settings after assembly.

WARNING: All air pressure equipment installed in or connected
to the machine must have safe working pressure ratings of at
least the machine rated pressure, and materials compatible with
the compressor lubricant (refer to the

GENERAL INFORMATION

section).

WARNING: If more than one compressor is connected to one
common downstream plant, effective check valves and isolation
valves must be fitted and controlled by work procedures, so that
one machine cannot accidentally be pressurised / over pressu-
rised by another.

WARNING: If flexible discharge hoses are to carry more than 7
bar pressure then it is recommended that safety retaining wires
are used on the hoses.