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with the intent of the Contract Documents. PART 2- PRODUCTS 2.1 PATCHING MATERIALS A. Except as otherwise indicated, use same products as used by original Installer for patching holes in insulation, ductwork and housings which have been cut or drilled for test purposes, including access for test instruments, attaching jigs, and similar purposes. At Tester's option, plastic plugs with retainers may be used to patch drilled holes in ductwork and housings. Test and Balance Agency shall coordinate with the system insulator to rework any void in the thermal insulation or moisture barrier. 2.2 TEST INSTRUMENTS A. Utilize test instruments and equipment for testing and balancing work required, of type, precision and capacity as recommended in the following testing and balancing standards: AABC's Manual MN-1 "AABC National Standards" PART 3- EXECUTION 3.1 TESTING, ADJUSTING AND BALANCING A. Examine installed work and conditions under which testing is to be done to ensure that work has been completed, cleaned and is operable. Do not proceed with testing and balancing work until unsatisfactory conditions have been corrected in manner acceptable to Tester. B. Test, adjust and balance environmental systems and components, as indicated, in accordance with procedures outlined in applicable standards. C. Prepare report of test results, including instrumentation calibration reports, in format recommended by applicable standards. The report shall include a system schematic for each air handling system; clearly identifying which air device in the field corresponds to the air device in the Report. D. Patch holes in insulation, ductwork and housings which have been cut or drilled for test purposes. E. Mark equipment settings, including damper control positions, valve indicators, fan speed control levers and similar controls and devices, clean and dirty filter positions on Dwyer gages, to show final settings at completion of testing and balancing work. Provide markings with paint or other suitable permanent identification materials. F. Prepare a report of recommendations for correcting unsatisfactory mechanical performance when system cannot be successfully balanced; including, where necessary, modifications which exceed requirements of contract documents for mechanical work. G. Retest, adjust and balance systems subsequent to significant system modifications, and resubmit test results. H. The Test and Balance Contractor shall assist the Architect/Engineer in verifying that proper measuring instruments and methods were used. 3.2 TESTS CEA#18010 TESTING,ADJUSTING AND BALANCING 23 05 93-4 COPYRIGHT©2018 CONSULTING ENGINEERING ASSOCIATES, INC.