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ARB Approved IOM — HealyNeeder-Root Phase 11 EVR System — VR -202-A (CAS -- 9961) Page 21 OPERATION AND PURGING NORMAL OPERATION: ❑ There are four ball valves on the tank. In normal operation, only the valve at the top of the tank shall be open — the other three valves shall be closed. All four valves shall be locked in the above positions. The two plugs should be installed using a non -hardening, UL classified pipe joint compound and tightened to 60 ft -lbs. DRAINING THE BLADDER: ❑ Any liquid coming over from the vent system would have collected above the valve in the riser pipe before going into the bladder. An inspection of the need to drain the bladder is easily made by removing the plug at the tee on the bottom plumbing of the tank. Before removing this plug, open the valve above the tee to release any liquid into the piping below. Wait approximately 30 seconds and then close the valve. Now, remove the plug at the tee on the bottom plumbing of the tank — be sure to have a container suitable for gasoline available to catch fluid. If liquid in excess of 16 ounces (473 ml) drains out, the bladder should also be drained. ❑ Should it be necessary to drain the bladder: 1. Close the upper ball valve (usually open) leading to the tank vent lines. 2. Open the valve that goes to the vertical riser that enters the top of the tank (the one without the ball valve going into the tank). Be sure the other three ball valves that connect to the vent lines and tank are closed. 3. Remove the plug from the bottom tee and connect an explosion proof evacuation pump capable of handling liquid. Have a liquid tight, container suitable for gasoline positioned to receive any fluid that may exit the system and start the pump. If no liquid returns within 30 seconds, the bladder is dry — discontinue pumping, remove the pump, replace the plug and return the ball valves to their original, locked, positions. DRAINING THE TANK: ❑ Should it be necessary to drain the tank (between the bladder and steel wall): 1. Close the ball valve at the top of the tank and also the two valves on the vertical risers. 2. Remove the plug in the bottom tee and place a metal container below the pipe opening. 3. Carefully open the ball valve at the bottom of the tank — observe that the container that is being drained into does not overflow — empty container as required until fluid no longer comes from the pipe when the valve is open. 4. Close the ball valve and replace the plug into the tee. 5. Return all ball valves to their original locked positions. Healy Systems, Inc. Website: http://www.healysystems.com 18 Hampshire Drive Email: sales@healysystems.com Hudson, New Hampshire 03051 USA Telephone: 603.882.2472 ARB Approved Installation, Operation and Maintenance Manual (August 31, 2005) Fax: 603.882.5189 Healy Systems, Inc. — the innovative leader of Stage 11 vapor recovery equipment