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Products / NEMA Motors / Definite Purpose Three Phase / Cooling Tower Duty Cast Iron Motors
Cooling Tower Duty Cast Iron Motors Note: Image shown is a representation of the product and may not represent the exact model.

Cooling Tower Duty Cast Iron Motors

1 - 75HP, PREMIUM EFFICIENT, THREE PHASE, TEAO/TEFC

Quick Specs

  • HP 1 to 75
  • PHASE 3
  • POLES 4 and 6 pole
  • VOLTAGE 230/460V & 575V 60Hz
  • MOUNTING Foot with Rigid Base
  • ENCLOSURE Totally Enclosed Air Over (TEAO)
    Totally Enclosed Fan Cooled (TEFC)

Product Overview

Techtop Cooling Tower Duty Motors are built to perform in the harsh, moisture-heavy environments of cooling towers and chillers. Designed for wet, corrosive, and demanding conditions, these three-phase cast iron motors offer superior ingress protection and enhanced condensation drainage for long-term durability and reliability.

Available in 4 and 6 pole configurations from 1 to 75 HP, they’re an ideal choice for cooling towers, chillers, and other severe-duty industrial applications.


Features

STANDARD FEATURES
  • Removable feet F1, F2, F0 field convertible up to and including 326T frame, F2 convertible 364T and larger
  • 1.25 Service Factor through 326T frame, 1.15 Service Factor for 364T and larger
  • 36 Month warranty
  • Cast iron construction
  • Cast iron fan cover standard for all frame sizes (TEFC models only)
  • Cast iron conduit box is 90° rotatable
  • Dual oversized sealed bearings
  • Dual rated space heaters Installed
  • Tapped shaft for vertical lifting
  • Internal grounding brush installed
  • Rear mounted lifting eyebolts for vertical shaft down lifting (TEAO models only)
  • Anti-microbial (tropicalization) on stator winding
  • C3 Surface finish:
    • 2-Part epoxy coating RAL7024 - Graphite Gray
  • Stainless steel nameplate
  • Stainless steel hardware
  • Ultra high strength, reusable lifting straps included with motors 254T frame and larger

OPERATING PARAMETERS
  • Continuous (S1) duty
  • Ambient temperatures up to 40°C
  • Installation up to 1000 MASL (3300 ft.)
CONNECTION
  • Up to and including 215T Frame:
    • 9-Lead 230V parallel-wye / 460V series-wye connection
    • 3-Lead 575V wye connection
  • 254T Frame and larger:
  • 12-Lead 230V parallel-delta / 460V delta connection
  • 6-Lead 575V single voltage delta connection

INGRESS PROTECTION

Features enhanced IP55 ingress protection, including double lip oil seals on both ends, a rubber shaft slinger, silicone-sealed end bells, and a potted terminal box. The stator and rotor is coated with moisture-resistant insulation, and bearing retainer gaskets are installed at both ends. Drain provisions are included for all mounting positions, with multi-directional conduit box drainage to ensure reliable operation in wet, corrosive environments.


INSULATION AND INVERTER RATING
  • Class F Insulation (Impregnation resin, magnet wire and insulation materials are Class H)
  • Designed to Class B temperature rise
  • Double Vacuum Pressure Impregnated (VPI) for enhanced moisture and thermal resistance
  • Inverter Rated 30:1 Constant Torque, 1000:1 Variable Torque (1.0 S.F. on VFD Power)
  • Exceeds NEMA MG 1 Part 31.4.4.2


Models & Pricing