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Executive Order G-70.164,Exhibit 2,page 5 4. The ECS-1 panel shall display "CALL FOR SERVICE" when the number of unsuccessful attempts to ignite the burner in a twenty-four hour period reaches twenty. 5. The status panel shall also indicate the system status, either by displaying "SYSTEM NORMAL" (indicating that the FLAME/VALVE ratio is in the normal operating range as specified above) or by displaying the message "CALL FOR SERVICE". Audible Alarm 1. The VCP-3A system shall include an audible alarm which shall sound if any of the following conditions have occurred: • the submerged turbine pump has been activated for two seconds without causing activation of the collection unit; or • the processing unit has made twenty (20) consecutive unsuccessful attempts to ignite; or • the processing unit has made twenty (20) non-consecutive unsuccessful attempts to ignite in a 24 hour period. If the alarm sounds, the manual reset shall be used to restart the system. If the alarm sounds again within several hours, the unit is presumed to be malfunctioning and a call for service shall be made. 2. The audible alarm shall be located such that it can easily be heard by station personnel in the area most likely to be occupied during normal station operation (i.e., at the cash register.) Tank Pressure Switch 1. The VCP-3A system contains two pressure switches designed to activate the system. The inline pressure switch, located in the processing unit, shall be set to activate at a nominal inlet pressure of 1 inch water column. The second pressure switch (Part Number PST-1) shall be installed on the tank outlet of the collection unit. The purpose of the tank pressure switch is to monitor the storage tank pressure and to activate the system if the tank pressure exceeds plus 0.1 inches of water column. During normal operations, the VCP-3A system maintains storage tank pressures in the range of minus 0.5 to plus 0.1 inches of water column. This range is occasionally exceeded briefly due to peak activity periods or bulk fuel delivery operations. Pressures which are consistently outside of this range may indicate system malfunction. Pressure/Vacuum Valves for Storage Tank Vents 1. A pressure/vacuum (P/V) valve shall be installed on each tank vent. Vent lines may be manifolded provided the manifold is installed at a height not less than 12 feet above the driveway surface used for Phase I tank truck filling operations. At least one PN valve shall be installed on manifolded vents. If two P/V valves are desired, they shall be installed in parallel, so that each can serve as a backup for the other if one should fail to open