• Before carrying out the warming-up operation for the hydraulic
equipment, turn the swing lock switch ON, check on the monitor
that the swing lock is actuated, then start the warming-up
operation.
• When warming up the hydraulic equipment, check that there is
no person or obstacle in the surrounding area, then sound the
horn and start the operation.
• Carry out the warming-up operation for the hydraulic equipment
until the hydraulic oil temperature monitor displays the correct
temperature.
(When the hydraulic oil temperature is low, the low temperature
display shown in the diagram on the right is given.
• (A) Display when temperature is correct: Monitor background
(C) is blue
• (B) Display when temperature is low: Monitor background (C)
is white)
• The warming-up operation for the hydraulic equipment is
necessary not only for the circuit between the pump and
cylinders and between the pump and motor, but also for the
control circuits. Do not carry out the operation just for one
cylinder or motor, or the operation just in one direction. Carry
out the operation in all directions for all the crane, swing and
swing.
1. Check that the engine coolant temperature monitor (1) displays
the correct temperature.
• (A) Display when temperature is correct: Monitor background
(C) is blue.
• (B) Display when temperature is low: Monitor background (C)
is white.
If it displays low temperature, carry out additional warm up of the
engine until engine coolant temperature monitor (1) displays the
correct temperature.
2. Turn swing lock switch (2) ON and check that the swing lock
monitor lights up.
3. To complete the warm-up operation of the hydraulic equipment
more quickly, set the working mode to P mode (heavy-duty
mode).
For details of the procedure for setting the working mode, see
(Operation 2.1.6 Monitor Display Switches [1] Working Mode
selector Switch”.
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