This diagram explains the model coding system for the pump using U 3-120 / 6 T -WR as an example:

• Pump Type: U represents the core pump type.

• Nominal Flow Rate: 3 indicates the nominal flow rate in $\text{m}^3/\text{h}$ (or power rating, e.g., 120).

• Number of Impellers: 6 denotes the number of impellers.

• Motor (Phase):

  • Blank (no letter) = 1-phase ($1\sim$)

  • T = 3-phase ($3\sim$)

• Certification:

  • Blank (no letter) = standard

  • -WR = WRAS approved

• Mechanical Seal:

  • Blank (no letter) = standard

  • -2 = Sic-Sic (Silicon Carbide vs. Silicon Carbide)

Horizontal pump of the ULTRA series equipped with a single-phase EPIC or three-phase EPIC-A variable speed drive. This booster pump maintains the desired system pressure regardless of changes in water demand, making it ideal for resolving low or missing pressure issues in domestic applications. A membrane tank installed downstream is required.

• Onboard EPIC (single-phase) or EPIC-A (three-phase) variable speed drive

• ULTRA series horizontal pump

• Integrated pressure sensor

• Power cable with plug

  
  

FUNCTIONING

When network pressure drops, the pump starts automatically and gradually increases speed to maintain the set pressure. As water demand decreases and pressure rises, the pump slows down and eventually stops when demand ceases altogether. The pump then stays on standby, ready to restart upon the next demand for water.

SELECTION

The table below lists the horizontal ULTRA pump models available for assembly with EPIC or EPIC-A drives. Please consult the ULTRA series catalog for detailed pump specifications and performance curves.