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Preventive Maintenance
Your Viper Pro SLA system must have preventive maintenance (PM) performed by a qualified 3D
Systems Customer Support Representative. Contact 3D Systems after one year of build time.
Gel Filtering
Resin life is adversely affected by partially-polymerized material in the RDM, both in debris, such
as broken supports and crash remains, and in gel. In order to maintain the longest possible resin
life, the user should remove as much debris as possible, either continuously or periodically. Gel
should be kept apart from neighboring gel, to avoid viscosity increase. Gel continually forms,
both in the bulk of the RDM, and around debris that has settled to the bottom of the RDM. Gel
may cluster into larger masses, may gradually increase in molecular weight because of chain
growth, and may or may not settle to the bottom of the RDM, depending on the specific resin and
the state of the gel. Debris removal prevents some gel formation, although not all gel is related to
larger debris. Gel can be very difficult to actually remove, as it isn’t easily separated from viscous
resin, is slippery, and can clog filters and sieves.
70696 Revision 1C 27-Aug-08
