Safety During Maintenance; Disconnecting/Securing Cnc Machine - Grizzly G0876 Owner's Manual

Never open the sliding door of the separating protective unit when the CNC program is

running.
WARNING!
When chipping magnesia materials (aluminum-/magnesium alloys), spontaneously
inflammable or explosive particles (powder, dust, chips) might be generated, which
might cause a fire and/or explosion.
Magnesium is a dangerous material. In case of a fire with magnesium, only use
appropriate and admitted extinguishing agents. Never extinguish using water. If
burning magnesium is extinguished with water, this might lead to dangerous reactions
(hydrogen gas). Water would be decomposed in its components hydrogen (H) and
oxygen (O).
Only the following extinguishing agents are permissible:
solid extinguishing agent of fire class D (fires involving metals)

dry covering salts for magnesium

a mixture of sand and cast chips

argon (Ar) or nitrogen (N

If fine mist and smoke is generated at the workplace, suction units must be provided in
order to avoid the accumulation of ignitable mixtures and emissions.
We provide information about the specific dangers when working with and on the CNC machine
in the descriptions for these types of work.
1.13

Safety during maintenance

Inform the operators in good time of any maintenance and repair works.
Report all safety-relevant changes and performance characteristics of the CNC machine. Any
changes must be documented, the operating instructions updated and machine operators
instructed accordingly.
1.14 Disconnecting and securing the CNC machine
Turn off the main switch of the CNC machine before starting any maintenance or repair 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 voltages are switched off.
Excepted are only the positions which are marked with the adjoining pictogram. These positions
may be live, even if the main switch is switched off.
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 off
switch due to required works (e.g. functional control).
Model G0876 (Mfd. Since 3/19)
)
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