Dynapac CA121, Operation Manual

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15
CA121/141 O121EN4
OPERATION
Reserve brake – Check
Test the reserve brake by pressing the
reserve brake knob (3) while the roller is
running slowly forward. Stop the roller and
identify the fault if the brake does not
work.
The engine stops when the reserve brake knob is
pressed. The control knob must be pulled out before
the engine can be restarted. The Forward/Reverse
control must be in neutral before the engine can be
restarted.
Fig. 14 Instrument panel, left side
3. Reserve brake
Fig. 13 Instrument panel and controls
1. Forward/Reverse lever
3. Reserve brake
4. Temperature gauge - coolant
5. Oil pressure gauge
8. Tachometer/hourmeter
9. Parking brake
11. Rev control
Under no circumstances may the machine
be operated from the outside. The operator
must remain seated inside the machine
during all operation.
Open the throttle (11) until engine speed is 2200 rpm on
the tachometer (8). Finely adjust by turning the control
knob – clockwise to reduce revs and counter-
clockwise to increase.
Check that the steering is working by turning the
steering wheel once to the left and once to the right,
while the roller is stationary.
Make sure that the area in front of and be-
hind the roller is clear.
Move the toggle switch to the OFF position
to release the parking brake (9).
Be prepared because the roller may begin to
roll.
The reserve brake knob (3) must be pulled out.
Carefully move the forward and reverse lever (1) in the
desired direction of travel. The speed increases the
further the lever is moved from the neutral position.
Always regulate the speed with the forward and
reverse lever, not by changing the engine
speed.
Check while driving that the gauges show normal
values:
• Coolant temperature (4): 82–94°C (180–201°F)
(Above 99°C (210°F)—Stop the engine and locate the
fault.)
• Engine oil pressure (5): 140–415 kPa
(Below 100 kPa—Stop the engine and locate the fault.)
8
4
5
11
9
1
3
3