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.4-0 ATG Leak Test Molb(ln-Tank) In most areas of the country when Automatic Tank Gauge Probes are utilized as the sole method for leak detection, it is required that a .2 gallon per hour Leak Test using these probes be performed and passed at least once a month on each tank. (Check your local regulations for requirements in your area). Because the frequency and types of testing do vary, we have provided 4 methods in which the EMS console may run Automatic Tank Gauge Leak Tests; they are: 1. Automatic Leak Test (ALT) - In this mode of operation, the EMS console continually scans the -activity in the tank and determines the times in which no fuel is being dispensed or delivered. These times are referred to as "Quiet Times". During these "Quiet ^Times" the EMS console automatically begins its leak check program. If the EMS has a sufficient amount of time to conclude a test, the results will be logged in the Leak Test history file (See Figure 3, page 7-8). If during a test someone dispenses fuel, the EMS Console will abort the Leak Test in progress and wait for another "Quiet Time" to automatically start the test once again. A report will be printed in the event the EMS fails a Leak Test, along with activation of the RED ALARM LED, the audible alarm and the line four message on the display. In addition, you have the option of having a report printed automatically for all passed Leak Tests as well. Because these Leak Tests must be performed in most cases on a monthly basis due to regulatory requirements, the EMS console can also be programmed to notify the operator in the event it was unable to perform a Leak Test automatically on a tank during the month. This warning will be a YELLOW _WARNING LED, audible alarm and a message on line four of the display as well as a printed reminder (See Figure 5, page 10). The number of days prior to the --end of the month in which this warning will be activated can be set by your TIDEL AUTHORIZED SERVICE DEALER. In the event you receive such a warning, you must provide adequate "Quiet Time" for the EMS Console to w conclude an ATAILeak Test. This may be accomplished byWt dispensing from or receiving fuel into the tank under this "Warning" for 1 to 6 hours, to allow the EMS.console the opportunity to conclude a test. The length of this test is dependent on the stability of the temperature and level in the tank. There is also a regulatory requirement in some states to run an Automatic Tank Gauge test at a minimum tank capacity (commonly 80% full). The EMS can also be programmed to provide a warning if an ATG Leak Test has not been performed at this level or higher during the year (See Figure 5). If you receive this warning, the tank must be filled to the acceptable level and adequate "Quiet Time" provided so the EMS may run a Leak Test (See Figure 5a). 2. Timed Leak Tests (TLT) - In this mode of operation the EMS Console will run a Leak Test daily, weekly or monthly at preprogrammed start and stop times. The EMS Console will always print a leak check beginning and ending report in this mode of operation. 3. By an operator from the keypad - See pages 11- 14 for a description on how to manually start and stop an ATG Leak Test. 4. By remote communications via phone modems or direct communications - See page 30 for more information on communication links into the EMS. Both the (ALT) and (TLT) must be set up by a Tidel Authorized Service Dealer. Regardless of the means of activation, the Leak Test will be terminated automatically by the EMS Console. Leak Tests will run one (1) to six (6) hours, depending upon the level of fuel in the tank, temperature, stability, etc.... To perform a leak check, the tank or manifold group of tanks under test must be in a static condition (no product being delivered or dispensed). Selected tanks may be tested individually or simultaneously. During a leak check, visual or printed information may still be obtained with the keyswitch in NORMAL position. When a tank or manifold group of tanks is placed into the ATG Leak Test Mode, a Leak Test Enable Report will be printed showing: your station ID number;