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rom Lineage° <br /> Stockton Maintenance Procedures <br /> Task flow diagram for this maintenance procedure is presented below: <br /> Pump Going Off-Line <br /> 1. Turn Ammonia Pump OFF <br /> 11, <br /> 2. Close Pump Valves <br /> 3. Open Electrical Disconnect <br /> Pump Going On-Line <br /> 1. Open Pump Valves <br /> 2. Close Electrical Disconnect <br /> 3. Turn Ammonia Pump ON <br /> 4. Pump Operation Verification <br /> Special Precautions/Note: <br /> ✓ When Removing Valve Stem Seal caps and/or Valve plugs; take special precaution for trapped ammonia <br /> gas/liquid may be present. Rock the plug or Seal cap side to side while slowly unthreading to release any <br /> residual potential pressure. <br /> ✓ Prior to exercising valves,wipe down valve stem, loosen Gland Packing Nut one-half turn,dress valve stem <br /> with"Orange Solid Oil",exercise valve stem,tighten Gland Packing Nut <br /> ✓ Do not over-tighten valves when closing; this could damage the Teflon seal on the bonnet which could <br /> prevent the valve from sealing properly for future use. Never use a pipe wrench or cheater bar to close the <br /> valves. <br /> Document#: Ammonia Pump Rotation Procedure Page 2 of 4 <br /> Revision#: 1.0. <br /> Revision date: 04/26/2021 <br />