Mechanical Equipment | SPX Cooling Technologies 7014H081

Marley / MC Fluid Cooler / Specifications: Base

Specifications

Specification Value

take the above water quality and load carrying capabilities into account in the selection of their materials of manufac- ture.

7.0Mechanical Equipment:

7.1Fan(s) shall be forward curved cen- trifugal-type, which are statically and dynamically balanced. The fan impeller is manufactured from galvanized steel, blades are riveted to the center plate and inlet rings and have stay rods to ensure maximum concentricity and rigidity. The stay rods are adjusted by the manufacturer during the balancing operation and require no field adjust- ment. Fan(s) shall be driven through one-piece, multi-groove, V-belt, pulleys, and spherical roller bearings. Bearings shall be rated at an L10 life of 50,000 hours, or greater. A hinged motor adjustment plate with threaded ten- sioning bolts shall be installed to allow correct belt tensioning.

7.2Motor(s) shall be ____ kW maximum, Totally Enclosed, 1.15 service fac- tor, variable torque, and specially insulated for fluid cooler duty. Speed and electrical characteristics shall be

______ RPM, single-winding, 3 phase, 50 hertz, ____ volts. Motor shall oper- ate in the shaft-horizontal position and nameplate kW shall not be exceeded at design operation

7.3The complete mechanical equipment assembly for each cell shall be sup- ported by a rigid, galvanized steel structural support that resists misalign- ment between the motor and sheaves. The mechanical equipment assembly shall be warranted against any failure caused by defects in materials and workmanship for no less than five (5) years following the date of fluid cooler shipment. This warranty is limited to the fan, fan shaft, bearings, sheaves and mechanical equipment support. The motor, motor components and belt(s) are warranted by their manufac- turer.

■The Marley drive system features all-aluminum sheaves (pulleys), power band belts, and long-life bearings for dependable service.

To reduce cost, some manufacturers may use TEAO motors, whose only source of cooling is the flow of air produced by the fluid cooler fan. They are sometimes applied at kWs significantly beyond their nameplate rating.

Unless otherwise specified, motor speed will be 1500 RPM, 50 Hertz on standard models. If you prefer the operating flexibility of two- speed operation, please specify two-speed, single-winding motors which offer full and half speeds for maximum energy savings. Incidentally, two speed motors are a far better choice than separate “pony” motors which simply double the problems indicated above.

The value of a 5 year mechanical equipment warranty speaks for itself.