SPX Cooling Technologies Recold / JW Series Fluid Cooler / Accessories, Capacity Controls

Recold / JW Series Fluid Cooler / Accessories

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CAPACITY CONTROLS

Dual Fan Motors—The dual fan motor package is available as a proven energy saving capacity control option. It consists of furnishing a high efficiency motor, a 1200 RPM, low speed motor, two sets of drives and belts, extended fan shaft and motor bases on opposite sides of the blower. A UL control-starter panel is available as a completely wired package for one point connection.

Variable Speed Drive—A Variable Speed Drive automatically minimize the tower’s noise level during periods of reduced load and/or reduced ambient temperature without sacrificing the system’s ability to maintain a constant cold water temperature. This is a relatively inexpensive solution, and can pay for itself quickly in reduced energy costs.

Electric Damper Controls—An electric damper control package is available as an accessory for modulating the internal damper system. A proportional solid state actuator is factory mounted below the fan scroll and attached to the damper shaft by connecting linkage. A sensing bulb connected to the actuator by a capillary tube is normally mounted in the unit pan water basin for monitoring the system. However, when specified, a pressure control may be supplied for field mounting to allow direct head pressure control. An end switch located inside the motor actuator may be adjusted to cycle the fan motor on for pressure rise and off when dampers close.

COIL CASING INSULATION

In order to further reduce the heat loss from the unit coil, insulation factory installed on exterior coil panels is available. A protective coat of paint is applied to the insulation for protection from the weather elements.

POSITIVE CLOSURE DAMPERS

Many times during unit shutdown with fan and pump off, it is desirable to conserve the amount of heat loss from the process fluid. For those applications, closure dampers are available for this installation at the air discharge of the fluid cooler. The damper package is designed to prevent convective air flow through the idle unit thus minimizing the heat loss. Installation of the closure dampers requires all wiring to be completed in the field. An electric actuator is factory mounted, however controls are to be supplied by others. The damper actuator should be wired into the field control system to allow the dampers to fully open when the fan cycles on and close when the fan cycles off. The actuator requires a 115V power supply

ELECTRONIC WATER LEVEL CONTROL

The electronic water level control package provides a constant and accurate means of monitoring water level in the unit. For this reason, it is often recommended for those installations which require year round operation in low ambient conditions.

The complete package includes an electric float switch with stilling chamber which is factory installed in the pan section of the unit. An electric solenoid valve for water make-up is shipped loose for remote installation. All wiring must be provided in the field by others.

PUMP STRAINER

Pump intake extension and a cleanable non-ferrous pump strainer in an easy access location is available.

MODIFICATIONS TO WATER DISTRIBUTION SYSTEM

Various package are available to provide manual or automatic change-over as a backup system in the event of a spray pump failure

PAN HEATER

The use of a remote sump tank located indoors is a common form of pan water freeze protection for evaporative cooling equipment. However, for those installations which will not allow this type of system, freeze protection may be provided by electric immersion heaters or steam or hot water coils installed in the pan.

The electric heater package consists of immersion heaters installed in the pan to provide efficient even heat distribution. Standard heaters are selected to provide approximately 40°F pan water at -10°F ambient temperature. A low water cutout switch is supplied to prevent heater operation when the elements are not completely submerged. The heaters are monitored by a sump thermostat with remote sensing bulb located in the pan water. All heaters and controls are factory installed for field wiring by others.

NOTE: Pan heater packages are designed to prevent pan water freezing during unit shutdown with fans and pump idle.

CAPACITY BOOSTER COIL

A finned coil mounted on top of the eliminator section is available primarily for applications with high entering fluid temperatures or for applications where dry operation under low entering air temperatures is anticipated. Copper tube with aluminum or copper fin coils are available.

VIBRATION ISOLATORS

Spring type vibration isolator rails may be supplied for field installation, most units will require an intermediate rigid steel framework between the isolators and the base of the unit to provide adequate structural support for the unit. Consult Recold sales representative for recommendations on any vibration isolation application.

STAINLESS STEEL CONSTRUCTION

300 stainless steel construction is offered as an option for sump pan and upper casing panels.

RECOLD PRODUCTS

550 W MERCURY LANE BREA, CALIFORNIA 92821 UNITED STATES

704 529 6080 info@recold.com

spxcooling.com

In the interest of technological progress, all products are subject to design and/or material change without notice.

©2008 SPX Cooling Technologies, Inc. Printed in USA RECOLD JW-TECH-08