REICH Tandem 515-1914121R wiring diagram

The REICH product listing identifies 515-1914121R as a 12 V, 55 W Tandem pump with 19 L/min maximum flow and 1.4 bar maximum pressure, a 1 m cable and an 80 mm minimum tank opening. Flow and pressure maxima do not imply both occur simultaneously at the tap. The catalog calculates nominal input current as 55 W / 12 V, approximately 4.58 A; startup current remains unpublished.

The downloaded REICH operating instruction is a manufacturer-authored, generic submersible-pump sheet. It does not name 515-1914121R, so model-specific installation requirements still need checking against the supplied pump documentation.

The family instruction identifies brown as positive and blue as negative. Reversed polarity can still produce water flow, but with reduced performance, so pumping is not proof of correct wiring. The pump can be controlled by a tap switch, pressure switch or push-button arrangement. Match the switching equipment to the real motor load and starting demand; use an intermediate relay where the selected control requires one.

Neither the exact product page nor the reviewed family sheet gives a supply-fuse rating or a startup/stall current. Do not treat 55 W as a complete motor-circuit design. The catalog's nominal current envelope is calculated, not a tested surge or a connector rating.

The family sheet states 12 V DC and no more than 14 V. Many vehicle charging systems exceed 14 V, so confirm the applicable limit for the delivered 515-1914121R before connecting it directly to that bus. This older generic instruction is a reason to verify the installation, not evidence that every current Tandem variant tolerates a higher charging voltage.

Keep the pump submerged during use, with its intake clear of debris and its cable protected at the tank entry. The seal may tolerate a brief dry interval, but extended dry running is not permitted normal operation. If flow falls, inspect intake contamination, the hose and tap restrictions, trapped air, polarity and supply voltage under load. Remove and drain the pump when freezing is possible; draining only the tap can leave water inside the pump. The family sheet describes cleaning and an intake filter as ways to reduce debris-related faults.