HP Metal Jet S100 User Manual page 10

– Check that all equipment is properly grounded and installed to satisfy electrical classification
requirements. As with any dry powder, pouring this powder or allowing it to fall freely or be
conveyed through chutes or pipes can accumulate and generate electrostatic discharges,
potentially causing ignition of the powder itself, or of any flammable materials which may come
into contact with the powder or its container.
● Powder, agents and solvents storage, handling, and disposal as per local laws. See the Safety Data
Sheets of your processed powder and solvent powder for adequate handling and storage. Follow
your Environmental, Health, and Safety processes and procedures.
● Do not place the equipment in a hazardous location area, keep it separated from other equipment
that could create a combustible dust cloud or explosive gas atmospheres during its operation.
● Auxiliary post-processing equipment must be suitable for combustible and conductive metal dust.
● Stop operation immediately if sparks, flames, or powder and/or liquid spillage is seen and call your
HP service representative before continuing.
● All personnel, when handling combustible dust, should be freed from static electricity by using
conductive or dissipative footwear and clothing, and a conductive or dissipative floor.
● Keep the safety lid on top of the Build Unit at all times when it is outside of host equipment,
especially when it is in motion.
Use powder complying with HP guidelines, as follows:
● Explosion characteristics acceptance criteria:
– Minimum Ignition Temperature (MIT) 360°C or higher
– Layer Ignition Temperature (LIT) 375°C or higher
– Auto Ignition Temperature (AIT) 375°C or higher
– Minimum Ignition Energy (MIE) 100 mJ or higher at process temperature
– Minimum Explosion Concentration (MEC) 350 g/m³ or higher
–
Kst 200 bar·m/s or less
– ST grade 1 or less
● Minimum particle size (d10) > 2 μm
● Non-reactive with other materials or HP agents (see the safety data sheets for the agents on the HP
website at the following link: http://www.hp.com/go/msds), stable
Electric shock hazard
The internal circuits of the electrical cabinet, motors, ultrasounds converter, heating systems and build
unit operate at hazardous voltages capable of causing death or serious personal injury.
WARNING!
DANGER!
Turn off the equipment using the branch circuit breakers located in the building's Power Distribution Unit
(PDU) before servicing. The equipment must be connected to earth at mains outlets only.
6 Chapter 1 Introduction
High leakage current! The equipment must be connected to earth at all times.
Risk of electric shock. Power cabinet access to HP trained personnel only.