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Safety rules Chapter 2
02.11.11 Working instructions WIDOS 4900 Page 12 of 46
2.7. Dangers while handling the machine
The machine WIDOS 4900 is constructed according to the actual technical standard and the
acknowledged technical safety rules.
However, dangers for the operator or other persons standing nearby may occur.
Also damages to the machine itself or to other things are possible.
The machine must only be used:
• according to the prescription
• in safety technical impeccable status
Disturbances, which may affect the safety of the machine must be eliminated immediately.
2.8. Maintenance and inspection, repair
All maintenance and repair works have to be basically performed with the machine
in off position.
During this the machine has to be secured against unauthorized switching on.
Prescribed maintenance and inspection works should be performed in time.
The DVS gives the advice of inspection works after 1 year.
For machines with a specially high usage percentage the testing cycle should be
shortened.
The works should be performed at the WIDOS GmbH company or by
an authorized partner.
2.9. Dangers caused by electric energy
Only skilled workers are allowed to work at electrical appliances!
The electrical equipment of the machine has to be checked regularly.
• Loose connections and damaged cables have to be replaced immediately.
• If works at alive parts are necessary, a second person has to assist who can disconnect the
machine from the mains if necessary.
• All electric tools (heating element, planer and aggregate) have to be protected from rain and
dropping water (if need be use a welding tent).
• According to VDE 0100, the use on construction sites is only allowed with a power distributor
with a FI-safety switch.
2.10. Dangers caused by the hydraulics
System parts and pressure hoses should be made pressureless before beginning
of any repair works. Even if the machine is switched off, pressure may be in the
hydraulic accumulator!
There is a danger of injuring the eyes by hydraulic oil squirting out.
• Damaged hydraulic hoses have to be immediately replaced.
• Make a visual inspection of the hydraulic hoses before each work beginning.
• The hydraulic oil is inedible!
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