Specifications include, but are not limited to: 1. Andritz Screen Shaft and Brush Replacement: Furnish and install one new design Andritz Aquascreen brush shaft with bearings, seals, split core brushes and associated hardware. Scope is as indicated on attached reference drawing No. 50683090, excluding the brush shaft drive. Bidder to use existing brush shaft drive. The existing screen is Aqua-Screen Model 1800-4700-6, Serial Number ASC-11-173 installed in a 6-foot wide channel. The original Andritz job number is 812943. 2. Check and adjust existing drive chain: Check the tension of the screen chains as recommended by Andritz Separation and described in Appendix C. Tighten drive chains such that the rollers are in the position recommended by Andritz Separation with both bearings aligned with one another as described in Appendix C.