Product Brochure

THE QUIET REVOLUTION
Grundfos Pumps is the only manufacturer of large, wet-
rotor circulators in the U.S. commercial market with a
proven track record of more than 25 years experience.
Our large UP(S) wet rotor circulators are whisper-quiet
and maintenance-free. They feature an integrated pump
and motor design. Fewer parts means greater ease of
installation and durability.
QUIET OPERATION
Fans are often a source of noise and vibrations that can
resonate throughout a building via pipe work. Wet rotor
design eliminates the need for a fan to cool the motor:
water being pumped surrounds the rotor, cooling and
lubricating the shaft and bearings. No noise. Just quiet.
MAINTENANCE-FREE
The Grundfos large UP(S) wet rotor circulators are
virtually maintenance-free and oer many advantages
over three-piece, dry rotor pumps.
> No seals − eliminates hot water leakage
> No oil − pumped water is the lubricant
> No couplers − ensures no maintenance required
INCREASED OPERATING EFFICIENCY
The large UP(S) uses dynamically balanced rotors
and laser-welded, stainless steel, curved blade impellers.
Stainless steel impellers provide a higher pump eciency
than cast-bronze or cast-iron impellers.
ENERGY AND COST SAVINGS
The speed switch on the large UPS motor allows
you to adjust the pump speed to meet the needs of
your system, thereby reducing energy consumption and
saving you money.
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