Vibration Level; Vibration - Operating Condition; Guide To Reduce Vibration Levels On Machine - Komatsu PW118MR-11 Operation & Maintenance Manual

VIBRATION LEVEL

VIBRATION LEVEL
When used for its intended purpose, levels of vibration for the earth—moving machine transmitted from the op-
erator's seat are lower than or equal to the test vibrations for the relative machinery class in compliance with
ISO 7096.
The actual acceleration value for the hands and arm is less than or equal to 2,5 m/s
2
value is 1,2 m/s according to EN12096:1997.
The actual acceleration value for the body is less than or equal to 0,5 m/s
2
0,2 m/s according to EN12096:1997.
These values were determined using a representative machine and measured during the typical operating con-
dition indicated below according to the measurement procedures that are defined in the standards ISO 2631/1
and ISO 5349.

VIBRATION - OPERATING CONDITION

Excavating (Digging-loading-rotating-unloading-rotating)

GUIDE TO REDUCE VIBRATION LEVELS ON MACHINE

The following guides can help an operator of this machine to reduce the whole body vibration levels:
1.
Use the correct equipment and attachments.
2.
Maintain the machine according to this manual
• Tyre pressure
• Braking and steering systems.
• Controls, hydraulic system and linkages
3.
Keep the terrain where the machine is working and travelling in good condition.
• Remove any large rocks or obstacles.
• Fill any ditches and holes.
• Site manager should provide machine operators with machine and schedule time to maintain terrain
conditions
4.
Use a seat that meets ISO 7096 and keep the seat maintained and adjusted
• Adjust the seat and suspension for the weight and size of the operator.
• Wear seat belt.
• Inspect and maintain the seat suspension and adjustment mechanisms if necessary.
5.
Steer, brake, accelerate, and move the attachment levers and pedals slowly so that the machine moves
smoothly
6.
Adjust the machine speed and travel path to minimize the vibration level.
• When pushing with bucket or blade, avoid sudden loading; load gradually.
• Drive around obstacles and rough terrain conditions.
• Slow down when it is necessary to go over rough terrain.
• Make the curve radius of travelling path as large as possible.
• Travel at low speed when travelling around sharp curves.
7.
Minimize vibrations for long work cycle or long distance travelling.
• Reduce speed to prevent bounce.
• Transport machines long distances between worksites.
8.
The following guidelines can be effective to minimize risks of low back pain.
• Operate the machine only when you are in good health.
• Provide breaks to reduce long periods of sitting in the same posture.
• Do not jump down from the cab or machine.
1-6
WENAM00130
FOREWORD
2
, the uncertainty for this
2
, the uncertainty for this value is