Safety During Maintenance; Disconnecting/Securing Cnc Machine - Grizzly G0877 Owner's Manual

WARNING!
When chipping magnesia materials (aluminium-/magnesium alloys) spontaneously
in ammable or explosive particles (powder, dust, chips) might be generated which might
result in a re and/or an explosion (de agration).
Magnesium is designated as a dangerous material in the list of dangerous materials and
preparations according to Ordinance of Hazardous Substances.
In case of a re with magnesium only use appropriate and admitted extinguishing
agents. Never extinguish using water. If you extinguish burning magnesium with water it
might lead to dangerous reactions (detonating gas). Water would be decomposed in its
components hydrogen (H) and oxygen (O).
Only the following extinguishing agents are admitted:
solid extinguishing agent of the re class D ( res of metals)
m
dry covering salts for magnesium
m
a mixture of sand and cast chips
m
argon (Ar) or nitrogen (N
m
If ne mist and smoke is generated in the working room, suction unites need to provided
in order to avoid the accumulation of ignitable mixtures and emissions.
We specially point out the speci c dangers when working with and on the CNC-machine.
1.13

Safety during maintenance

Inform the operators in good time about any maintenance and repair works.
Report all safety relevant changes and performance details of the CNC-machine. Document all
changes, have the operating instructions updated accordingly and train machine operators.
1.14 Disconnecting and securing the CNC-machine
Switch o the CNC-machine by turning o the main switch before starting any maintenance
andrepair work.
Use a padlock to prevent the switch from being turned on without authorization and keep the
key in a safe place.
All machine parts as well as all dangerous tensions are switched o .
Excepted are only the positions which are marked with the adjoining pictogram. These positions
may be live even if the main switch is switched o .
Place a warning sign on the CNC-machine.
WARNING!
Live parts and moves of machine parts can injure you or others dangerously!
Proceed with extreme care if you cannot switch o the CNC-machine by turning o the
main switch due to required works (e.g. functional control).
Model G0877 (Mfd. Since 02/19)
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