Summary of ignition hazards
0000000141 - 002 - EN 48
11 Summary of ignition hazards
Ignition hazard
Source of ignition
Cause Protective measure implemented
Hot surface Heating by the operating fluid
and compression
Calculation formula
Temperature class definition
Insulation prohibited
Friction Friction in the drive unit Selection of materials and operating pa-
rameters
Definition of maintenance intervals
Definition of the compressed air quality
Friction Friction in the high pressure
unit
Selection of materials and operating pa-
rameters
Definition of maintenance intervals
Friction Friction in the spool valve Selection of materials and operating pa-
rameters
Definition of maintenance intervals
Mechanically gen-
erated sparks
Impact from the outside on
the device
Selection of the materials
Mechanically gen-
erated sparks
Ignition caused by foreign ob-
jects that have entered
Prevent foreign objects from entering
Mechanically gen-
erated sparks
Ignition caused by dust in the
equipment
Definition of maintenance intervals
Mechanically gen-
erated sparks
Impact from breakage of
spring
Selection of the springs
Flames Ignition of a leakage in the pis-
ton back chamber
Restrictions of equipment category and
EPL
purging specifications
Flames Ignition of lubricants Selection of the lubricants
Static electricity Charging of insulated metal
parts
All parts are conductively interconnected
Static electricity Charging of non-conductive
equipment parts
Design in accordance with component
size specifications
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