Page 49 - 05. Subyek Teknik Mesin - Automobile Mechanical and Electrical Systems Automotive Technology Vehicle Maintenance and Repair (Vehicle Maintenance Repr Nv2) by Tom Denton

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34 Automobile mechanical and electrical systems

Table 1.13 Cleaning materials

Material Purpose Notes
Detergents Mixed with water for washing vehicles, etc. Also used Some industrial detergents are very strong and
in steam cleaners for engine washing, etc. should not be allowed in contact with your skin

Solvents To wash away and dissolve grease and oil, etc. The NEVER use solvents such as thinners or fuel
best example is the liquid in the degreaser or parts because they are highly infl ammable. Suitable PPE
washer which all workshops will have should be used, e.g. gloves
They may attack your skin
Many are fl ammable
The vapour given off can be dangerous
Serious problems if splashed into eyes
Read the label

Absorbent To mop up oil and other types of spills. They soak Most granules are a chalk or clay type material which
granules up the spillage after a short time and can then be has been dried out
swept up

Table 1.14 Hazard, mandatory and warning signs

Function Example Background Foreground Sign
colour colour

Hazard Danger of electric Yellow Black
warning shock

Figure 1.45 Electricity
Mandatory Use ear defenders Blue White
when operating this
machine

Figure 1.46 Wear ear protection
Prohibition Not drinking water White Red/black

Figure 1.47 Not drinking water

permanently. Activism by the environmental movement has created awareness
of the various environmental issues. This has led to governments placing
restraints on activities that cause environmental problems and producing
regulations.