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15.4.1.4. If monitoring fluid is not in the reservoir, call the UST coordinator at the Xerxes plant nearest you. 15.4.1.5. If a tank is sloped, the reservoir should be at the high end. 15.4.1.6. In a tank with the interstice filled with monitoring fluid, Xerxes recommends using a nonmetalic riser pipe in the reservoir. 15.4.1.7. The monitoring -fluid level may fluctuate during shipping and may not be at the 3 -inch mark. Do not add monitoring fluid until after tank burial is completed and the monitoring system is set up. 15.4.1.8. The monitoring -fluid level in the reservoir will rise naturally under various conditions: • preinstallation air test, • rise in groundwater level, • backfill compaction, • product loading, • product temperature variation. 15.4.1.9. Check and record the monitoring -fluid level during the installation process. (See Tank Installation Checklist.) 15.4.1.10. Any monitoring -fluid leaks will be detected during the preinstallation air test. (See SECTION 3.) 15.4.1.11. Do not attempt to set the finished monitoring -fluid level until backfill and ballast is completed. 15.4.2. ELECTRONIC MONITORING 15.4.2.1. The system also provides the ability to use an electronic reservoir -fluid -level monitoring system. 15.4.2.2. The monitoring -fluid reservoir sensor has two points, which sense either high or low monitoring -fluid levels. 15.4.2.3. This process includes setting the monitoring -fluid level at a level mid -point between the sensors. This is determined by measuring the product or liquid level within the tank and then setting the monitoring -fluid level. (See SECTION 15.4.3.) 15.4.2.4. The level of the monitoring fluid may fluctuate due to such things as: • groundwater fluctuation, • tank filling and emptying, • product temperature variation. 15.4.3. PROBE INSTALLATION 15.4.3.1. If the tank contains product, stick the tank and set the monitoring -fluid level based on the product level. (See Points 15.4.3.3., 15.4.3.4. and 15.4.3.5.) 15.4.3.2. The sensor must remain in contact with the tank top at all times. Do not raise the sensor off the tank to meet the monitoring -fluid level. Add or remove monitoring fluid to change the level on the sensor. (See FIGURE 15-2.) 20 E Top Slab (by others) Street Box and Vent Reservoir/ Electrical Hookup Standpipe I (by others) Standpipe (by others) Sensor Cable Reservoir Sensor Monitoring -Fluid Level Tank Rib (cut away for j sensor placement) FIGURE 15-2 15.4.3.3. If the tank is between empty and 114 full, set the monitoring -fluid level at about 1-11/2 inches below the midpoint of the two points. 15.4.3.4. If the product level is between 1/4 and 112 full, set the monitoring -fluid to the midpoint of the two points. 15.4.3.5. If the product level is between 112 full and full, set the monitoring -fluid level to about 1-11/2 inches above the midpoint of the two points. 15.4.4. TRUCHEK® 15.4.4.1. If a TRUCHEK® is required after installation, follow the procedures in separate Xerxes document on TRUCHEK®. 15.4.4.2. After this test, reset the monitoring -fluid level to a position based on the product level. 16.1. GENERAL 16.1.1. The ACR is a termination point for secondary piping systems. It is designed to be monitored continuously for leaks using electronic sensors. Consult federal, state and local codes and regulations to ensure proper monitoring compliance. CTI Failure to follow these instructions may cause water -seal failure, personal injury or properly damage. CAUTION • Always wear gloves when handling ACR components. • Always wear eye protection when grinding, cutting and attaching the sump unit. • Read and follow all safety and application instructions on adhesive/sealant packaging. Failure to follow this caution may -result in personal injury or property damage.