Installing Two Pumps For Tandem Operation - Red Jacket Quick-Set AGUMP33R1 Installation, Operation & Service Manual

4" Standard Pump Installation, Operation & Service Manual

Installing Two Pumps for Tandem Operation

When greater flow rates are needed, two pumps may be installed in the same piping system by means of a
manifold. If installed according to the Figure 21, tandem systems offer backup support so operations can continue
if one pump stops working.
Alternatively, Veeder-Root's Red Jacket IQ™ Control Unit can be connected to additional control boxes to allow up
to four pumps per tank with demand-based sequencing. UMPs containing a Faradyne motor require IQ software
805-001 C (Version 3.2 or newer for proper operation of the system. Refer to specification section.
WARNING! Adjust the Functional Element on both packers to maximum relief pressure by rotating fully
clockwise. If maximum pump pressures are NOT a minimum of 5 psi (34 kPa) below the Functional
Element relief setting then proper check valves with pressure relief are required to be installed in the
discharge line of each pump to prevent product from being pumped through the pressure relief system of
the adjacent pump when it is not operating.
NOTE: Ball valves should be installed at the pump end of the discharge line for ease of maintenance and
troubleshooting (see Figure 21).
NOTE: The in-line check valves and 115 Vac relay are not available from Veeder-Root and should be
purchased locally.
Ball valves
Figure 21. Tandem pumps
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Installing Two Pumps for Tandem Operation
153-10.eps