3D Systems, Inc.
95
p/n: 15-D100, rev. D
3D Systems recommends that you execute this procedure
as written and have a Class D extinguisher available when
performing this procedure.
WARNING: ONLY PERFORM A PROCESS FILTER
CHANGE WHEN THE SYSTEM IS NOT IN ABNORMAL
CONDITION, E.G. NOT WHEN A VACUUM CYCLE,
INERT PREPARATION CYCLE OR COOL DOWN CYCLE
WAS CANCELLED BY AN EMERGENCY STOP OR
ABORTED.
WARNING: IT IS FORBIDDEN TO USE THE SAME
PROCESS FILTER FOR DIFFERENT POWDER
FAMILIES. IT IS MANDATORY TO CHANGE THE
PROCESS FILTER WHEN CHANGING FROM ONE
MATERIAL FAMILY TO ANOTHER. PROCESS FILTERS
CAN BE REUSED WITHIN THE SAME MATERIAL
FAMILIY AS LONG AS THEY DO NOT EXCEED
DESIGNATED RUNNING HOURS.
A. Centering Rings
There are two types of centering ring used in this procedure.
The first type (left image) is a standard centering ring that is
used for standard mechanical connections throughout the DMP
system. The second type (right image), is a centering ring with
stand-off. These are used exclusively on the process filter.
6.5 After 1600 Job Hours
6.5.1 Replace Process Filter
The inlet and outlet ports of the filter are equipped with a spring-loaded valve. When the filter is not connected to the system,
these valves keep the ports normally closed and thereby prevent air from entering the filter.
The left image below figure shows the top of the internal valve in the filter outlet port. When installed, the stand-off of the
centering ring is placed directly on the locating pin of the valve.
The associated pipe is placed directly on top of the centering ring with stand-off and pressed down until the flanges meet. This
creates the seal between the two mating parts and the centering ring with stand-off holds the spring-loaded valve open for
normal operation. The connection is secured with a KF50 clamp.