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Manifolded Product Line PLLD Installation Installing the System section of pipeline between the"slave"pump and the check valve. The user is responsible for providing monthly or annual monitoring of this piping. ❑ If a Mechanical LLD is used on the secondary tank, it must provide a strainer screen(60-mesh or finer)to guarantee proper operation of the Veeder-Root Check Valve installed on this line. If you are not installing a mechanical LLD,you must install a Pump Port Strainer in the slave pump(s). ❑ Dielectric unions and flexible piping elements should be used as required by federal,state,and local requirements for the specific piping application. Location of unions may vary with configuration. ❑ A relay must be available on either a Four Relay Module or UO Combination Module to control the pump on the secondary tank.The PLLD Module will provide pump control output for the primary tank and the"Pump In"(Dispenser ON)signal for the set. Procedure To install the manifolded PLLD system,follow these steps: 1. Install the Pump Port Strainer on the slave pump per"Pump Port Strainer Installa- tion(For In-Line Check Valves only)"on page 18.Install the Non-vented Check Valve in the pump discharge port of the slave pump. Important Seal any threads using a UL-classified, nontoxic pipe sealant suitable for the fuel involved. 2. Install the rest of the system as shown in Figure 9 on page 25. If you are installing more than two tanks and pumps,connect the additional tanks and pumps the same way that you installed the secondary tank and pump(see"Tank 2"in Figure 9). 3. Wire the system as shown in Figure 10 on page 26.Follow procedures and guidelines described in"Pump Control Wiring for PLLD Controller Module"on page 16 and"General Wiring Practices"on page 34. 24 576013-902,Revision G