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6 11. Replace the cover of the MagVFC. 12. Insert a 0-100 psi pressure gauge into the 114" line test port of the submerged pump (or other pressurized test location in the piping system). Turn power on to the MagVFC at the load center, turn on the submerged pump at the dispenser and inspect the line test port for leaks. If there are any leaks, immediately turn off the submerged pump at the dispenser and the load center and repair the leaks. 13. Begin purging the air from the piping system by activating a dispenser handle and pumping product into an approved container. Verify that while the pump is on but no product is being dispensed, the pressure reading on the gauge is equal to the related pressure from Table 2 in Step 22, +51-7 psi. Note: if pressure in the piping system is much lower than selected, it is possible that the polarity of the motor power wires is not correct, causing the motor to run in reverse rotation. Turn off the pump at the power supply, (wait one minute after LED display blanks before opening the cover) and change the connection of any two wires at the pump or at the MagVFC motor terminals. Turn the pump back on and read the pressure gauge again. The electrical connection, which gives the higher reading on the pressure gauge, is the correct one. 14. Complete purging the remaining air from the piping system and dispensers. If using Master -Slave or Master-Slave/Alternating Circuit, continue with next section. If not, go to "MagVFC Site Set -Up" section. 0 0 Master -Slave Control Connections Note: For Master/Slave and Alternating configurations, the MagVFC can only be paired with other MagVFC's. Because of enhanced communication protocols, the MagVFC is not capable of communication with the IST-VFC unless SW5 Pole 3 (IST-VFC Compatibility Mode) is switched ON. IST-VFC Compatibility Mode is available in rev 1.18 software or higher MagVFCs. To avoid the risk of potentially lethal Warning electrical shock, explosion or fire, always tag and lock circuit breakers in the off position before removing the cover of the MagVFC. After disconnecting power to the Warning MagVFC, wait one minute after LED display blanks before opening the cover for servicing. Voltage stored in the capacitor bank of the MagVFC presents a risk of potentially lethal electrical shock even after power is disconnected. 15. When two IST pumps or STP units with VS4 or VS2 suffix are installed to be run in parallel (discharging into the same line) three different modes of operation are possible, as follows: Master — Slave When a hook voltage is present at the Master it will turn on. When demand for product increases (more nozzles open) the Master will call the Slave controller to turn on. This will maintain the product flow rate in high demand situations. In this configuration, the slave unit(s) will run only when requested to do so by the master unit. Alternating Circuit The controllers will rotate being the one to turn on as the hook voltage turns on and off. Only one controller is on at a time in this configuration. Not available in IST-VFC Compatibility Mode. Master — Slave and Alternating Circuit A combination of the above two configurations. The first controller to turn on rotates and when the demand for product increases, additional controllers will be called on to assist.