693D SYSTEMS, INC. PN:80-D27 Rev.B
Process lter (external lter)
The lens cleaner lter must be changed every 1500 hours (2 months continuous 24/7 operation).
The ProX
®
DMP300 is equipped with a lens cleaner ltering unit that prevents fumes and dust generated by the sintering
process from being deposited on the lens. If this lter becomes clogged, the gas will not ow as eciently as it should and
may result in reduced sintering quality. Moreover, the step-by-step instructions identify the potential lter replacement
hazards and must be understood by the trained operators.
This procedure must be followed to ensure ecient sintering during the machine operation and also the operator’s safety
during maintenance. 3D Systems recommends that you execute this procedure as written and have a Class D extinguisher
available when performing this procedure.
WARNING : WEAR PPE DURING HANDLING OPERATIONS (REFER TO MSDS OF MATERIAL). WEAR A NON-
ELECTROSTATIC SUIT.
WARNING : RISK OF FIRE AND EXPLOSION.
THIS MAINTENANCE HAS TO BE DONE PROPERLY AND CAREFULLY. IF THIS MAINTENANCE IS NOT
PROPERLY DONE, IT CAN CAUSE DAMAGE TO THE MACHINE OR THE USER. USE THE NECESSARY TOOLS AND
WEAR THE CORRECT PROTECTION. THIS IS A TWO PERSON JOB.
Centering rings
There are two types of centering ring used on the disposable process lter:
• The rst type is a standard centering ring that will be used for the lter replacement. 2 standard centering rings are
supplied with the process lter crate, and should be stored for later use (lter replacement).
• The second type is a centering ring with stand-off tube. These rings are already mounted on the lter, one on each
port of the lter.
The inlet and outlet ports of the lter are equipped with a spring-loaded valve. When the
lter is not connected to the printer, these valves keep the ports normally closed and
thereby prevent air from entering the lter. The adjacent gure shows the top of the
internal valve in the lter outlet port. When installed, the stand-off of the centering ring is
placed directly on the locating pin of the valve.
The external pneumatic valve is placed directly on top of the centering ring with stand-off
and pressed down until the anges meet. This creates the seal between the two parts and
the centering ring with stand-off holds the spring-loaded valve open for normal operation.
The connection is secured with a clamp.
Locating pin
Standard centering ring
Centering ring with stand-off tube
Centering ring with stand-off tube
Pneumatic valve
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