A thermoplastic reinforced membrane section is cut and positioned into the drain sump, extending approximately six inches out of the sump with rounded corners. The field membrane is cut to lay flat in the sump area and secured with a drain clamping ring. A continuous hot air weld with a minimum width of one and one-half inches is applied completely surrounding the area. Dimension A is a minimum of twelve inches, dimension B is a minimum of six inches, dimension C is approximately six inches, and dimension D is a minimum of three inches.
CUT SECTION OF THERMOPLASTIC REINFORCED MEMBRANE AS SHOWN AND POSITION INTO DRAIN SUMP. EXTEND MEMBRANE OUT OF DRAIN SUMP APPROXIMATELY 6" (ROUND CORNERS). EXTEND THERMOPLASTIC MEMBRANE ONTO MEMBRANE SECTION POSITIONED AT DRAIN SUMP AND CUT AS SHOWN TO LAY FLAT IN SUMP. HOT AIR WELD A MINIMUM OF 1-1/2" COMPLETELY SURROUNDING AREA. THERMOPLASTIC REINFORCED MEMBRANE DRAIN BASE DRAIN SUMP BOUNDARY FIELD MEMBRANE CUT TO LAY FLAT IN SUMP AREA DRAIN SUMP BOUNDARY DRAIN CLAMPING RING MIN. 1-1/2" WIDE HOT AIR WELD CONTINUOUS FIELD MEMBRANE ℄ ℄ DIMENSIONS 12" A MIN. 3" D 6" B MIN. A B C ℄ 6" C APPROX. MIN. D HOT AIR WELD, 1-1/2" MIN.
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