SAFETY SECTION 1
DD-29/31HF/38HF Vibratory Asphalt Compactors 1-11
DISCONNECT the battery cables when working on the electrical system or when welding on
the compactor.
BE SURE the battery area is well ventilated (clear of fumes) should it be necessary to connect
a jump battery or battery charger. Fumes from the battery can ignite by a spark and explode.
BE SURE the battery charger is “OFF” when making the connections if battery charging is
required.
Use only original fuses with the specified current rating. Switch OFF the machine immediately
if trouble occurs in the electrical system.
Work on the electrical system and equipment of the machine must be done only by a skilled
electrician or by instructed persons under the supervision and guidance of a skilled electrician
and must be in accordance with electrical engineering rules and regulations.
If provided for in the regulations, the power supply to parts of machines, on which inspection,
maintenance and repair work is to be carried out, must be cut OFF.
Before starting any work, check the de-energized parts for the presence of power and ground
or short circuit them in addition to insulating adjacent live parts and elements.
The electrical equipment of machines is to be inspected and checked at regular intervals.
Defects such as loose connections or scorched cables must be rectified immediately.
Welding, flame cutting and grinding work on the machine should only be done if expressly
authorized, as there may be a risk of explosion and fire.
Before beginning welding, flame cutting and grinding operations, clean the machine and its
surroundings from dust and other flammable substances and make sure that the premises are
adequately ventilated (risk of explosion). Check all lines, hoses, and screwed connections
regularly for leaks and obvious damage. Repair damage immediately. Splashed oil may cause
injury and fire.
INSPECT hydraulic hoses at regular intervals and immediately replace them if they show signs
of chafing, cracking, brittleness, leakage, fitting separation, corrosion or other damages which
may affect their function and strength.
DO NOT work on hydraulic lines while the engine is running and the system is under pressure.
The hydraulic fluid remains pressurized long after the engine has been stopped.
Depressurize all system sections and pressure pipes (hydraulic system, compressed air
system) to be removed in accordance with the specific instructions for the unit concerned
before carrying out any repair work.
DO NOT work on any hydraulic hose or fitting until the pressure has been PROPERLY
relieved.
WAIT for hydraulic fluid to cool down before disconnecting lines. Hot hydraulic fluid will cause
severe burns.
NEVER use your hands to check for leaks when inspecting a hydraulic system. Use a piece
of cardboard and always wear gloves and safety glasses.
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