TRICTED BY: (1,2,3,4) 1. TRASH, SCALE BUILD UP, ETC. LOCATE AND REMOVE 2. PARTIALLY CLOSED VALVE IN SUCTION LINE LOCATE AND CORRECT 3. METERS, FILTERS, CHECK VALVES, NON-FULL-OPENING, CUT-OFF VALVE OR OTHER RESTRICTIONS. RE-WORK SUCTION LINE TO ELIMINATE 4. SHARP 90° BENDS OR 902 BLIND TEES. RE