Liquid temperature control equipment.

PRODUCT LINES REVIEWED

ADVANTAGE ENGINEERING, INC.

Offers fluid-circulating equipment for injection molding, extrusion, blown film, thermoforming, vacuum forming, compression molding, compounding/mixing, and blow molding.

Chillers are available in portable and plantwide central systems. Portable chillers range in size from 1- to 30-ton cooling capacity and come in air- and water-condensed designs. Central chillers range in size from 10 to 500 tons and are available in air- and water-condensed outdoor and indoor systems.

Mold-temperature controllers are available in both water- or oil-circulating systems. Water units operate at temperatures between 30 F and 250 F; oil units operate between 100 F and 500 F.

Cooling tower systems are available in a wide variety of sizes and designs. Sizes range from 20- to 1000-ton capacity. Company offers both metal and fiberglass tower cells. Related pumping equipment can be custom-designed to fit customer's requirements. Open- and closed-loop designs are standard. Engineering services are included with central cooling systems. All equipment can be computer-connected for remote control and information collection and storage in molding cell or plant network system.

AFFINITY INC.

Company offers its newly introduced F Series of microprocessor-controlled portable chillers. Ranging in size from 0.75 to 10 hp, units are available in both air- and water-cooled models. They use a small reservoir and plate-type heat exchangers for precise, quick response to cooling needs.

ALPHA EQUIPMENT CO.

Company designs and builds:

* Portable chilling equipment, air and water condensed, ranging from 3 to 40 hp.

* Central chiller systems, air or water condensed in capacities from 10 to 200 hp.

* Dehumidification/air conditioning for plant or molding room application, available in air and water condensed versions from 10 to 40 hp.

* Evaporative cooling tower systems in a full range from 4 to 1000 tons.

* Fiberglass-reinforced polyester (FRP) cooling tower cells available in a range from 7 to 210 tons.

* Water filtration for cooling-tower water and glycol chill-water system.

* Automatic water-treatment system to work with cooling-tower system.

ALPINE INDUSTRIES, INC.

Manufactures industrial water chilling systems. Products include:

* Industrial Open-Drive Chillers with compressors that eliminate motor burnout, costly clean-ups or extended downtime; energy efficiency ratios (EER) of 16 or more; built-in capacity control in response to suction pressure; positive unloaded start for reduced in-rush power needs. Extra-quiet models and explosion-proof (flame-proof) options are available.

* Model AMA portable air-cooled water chillers for process cooling applications are assembled on a sturdy steel structural frame and heavy-duty casters for mobility. Unit includes high-efficiency hermetic or semi-hermetic compressor, fully insulated chiller, air-cooled condenser, insulated water reservoir, process pump, solid-state temperature controller with readout, built-in freezstat, function lights, pressure gauges, and operating and safety controls. Custom options include JIC, NEMA-12 or explosion-proof electricals, automatic alarm system, hot-gas bypass capacity control or energy-saver two-speed capacity modulator, dual pumps, heat recovery, glycol low-temperature units and chilled-water flow switch.

* Model AMW portable water-cooled water chillers are similar in construction to Model AMA, with water-cooled instead of air-cooled condensers. Complete units are available with all Model AMA standard and optional features.

AMERICAN JET STREAM, INC.

Offers a full line of beside-the-press, closed-cycle, automatic water chillers from 12,000 to 240,000 Btu/hr. Units provide constant, accurate, automatic cooling temperature control in a variety of industrial applications. RF coolers use an anti-freeze mixture consisting of water and ethylene glycol.

APPLICATION ENGINEERING AEC, INC.

Offers a standard series of water temperature-control units with 3/4- to 10-hp pumps and standard selection of heaters from 9 through 24 kw, featuring stainless-steel sheath construction. Equipment has microprocessor control with easy-to-read LED, dual-temperature display of setpoint and process temperature; optional SPI communication protocol for CIM and SPC applications; and full-feature graphic display panel showing operator status and alarm indication lights. Units are packaged in a rugged low-profile cabinet designed with removable panels for ease of maintenance. Standard options include negative/positive-pressure units, system water-purge and closed-loop heat-exchanger units for hard-water areas.

Company also manufactures a complete line of portable air- and water-cooled chillers from 1 hp through 40 hp, and also central units, both air- and water-cooled, from 15 through 155 tons. On 15-hp units and larger, a discus compressor, which optimizes energy efficiency, is standard.

A complete line of noncorrosive cooling towers, polymer forced-draft and fiberglass induced-draft, from 30- to 200-ton cooling capacity, is available with a standard two-year parts warranty.

APPLIED PROCESS EQUIPMENT

Provides a complete line of water chilling, water cooling, water recovery, and water filtration systems. Machines include portable, central and heat-pump water chillers in either water- or air-cooled versions. Central evaporative tower systems are available in both open and closed systems. Closed systems are available with plate-and-frame stainless heat exchangers. All systems are provided with complete engineering drawings for economical local installation and are warranted for a full year on parts and labor.

AQUATEMP INC.

Builds chilled water systems, air- and water-cooled chillers ranging from 1.5 to 300 tons, and also provides water towers, sand and gravel filters, pumps, etc. Company's service department is on 24-hr call for any plant emergency.

BALTIMORE AIRCOIL CO.

Offers a full line of counterflow, cross-flow and parallel-flow cooling towers. Factory-assembled models are available in sizes up to 2110 tons. Field-erected cooling towers come in sizes up to 8640 gpm/cell. Also manufactures a broad range of evaporative condensers, industrial fluid coolers, heat exchangers, chillers, and thermal storage units.

Factory-assembled equipment is manufactured from galvanized steel. Field-erected models can be ordered in wood, steel, fiberglass or a wide range of other construction materials. Heat exchangers are available in shell-and-tube or plate-and-frame versions.

BUDZAR INDUSTRIES, INC.

Manufactures a complete line of chillers, hot-water and hot-oil mold-temperature controllers, cooling towers, and pump-tank sets.

Company's "Ice" line of chillers covers a full range of styles, featuring self-contained mid-sized units with refrigeration and water circuits piped, wired versions ranging from 13 to 35 tons.

The 7- and 10-ton air-cooled line of portable chillers uses blowers instead of prop fans to move air through the condenser coils, which allows for the use of ducting to control the flow of heated air that exits the unit. Ranging from 3 to 15 tons, units are available in both air- and water-cooled condenser configurations.

Central chillers feature dual-refrigeration circuits, easily serviceable electricals, quality evaporators and condensers, and full-unit frames for component protection.

Company's cooling towers are available in standard galvanized and FRP configurations from 5 to 175 tons, as well as larger sizes and multiple configurations.

Pump-tank assemblies, sized to match flow requirements of each chiller or cooling tower, feature tank covers, pre-wired electrical enclosures and alarms, as well as standby pumps and custom configurations.

Cooling towers are available in capacities from 20 to 200 tons. Design of the tower incorporates three separate methods of temperature control for more precise process water temperature. Towers are matched with pump-tank sets to provide maximum circulation and temperature control.

Mold-temperature controllers automatically maintain a preset temperature and are available in single- and multi-zone configurations for precise temperature control to 250 F. All units feature low-watt-density heaters and microprocessor-based temperature controllers.

Company's "BTU" product line covers a wide variety of both water and oil temperature controllers for temperatures to 650 F. Units are available in single- or multiple-zone configurations, and direct-injection and closed-loop arrangements. (See data sheets pp. 348-349.)

CHROMALOX EDWIN L. WIEGAND DIV.

Offers its portable mold-temperature control system, WTCS, in a compact 15 x 24 x 25 in. package. Delivering water at temperatures to 250 F, the system is available in ratings from 4.5 to 24 kw. It may be used for either heating or cooling, and may be configured with open- or closed-loop piping, depending on mineral content of water used.

For injection molding and other plastics applications, the WTCS system incorporates a 3/4-hp centrifugal pump capable of flow rates of 30 gpm. For maximum reliability, the system features automatic air bleed, low-pressure switch, over-temperature protection, and pressure-relief valve. Also featured are microprocessor controls with easy-to-read digital display and high/low-temperature alarms.

CINCINNATI MILACRON MARKETING U.S. PLASTICS MACHINERY DIV.

Supplies a wide range of liquid temperature-control equipment. Portable chillers range from 1- to 30-ton capacity and have solid-state or microprocessor-based controls. Central chillers and central chiller modules offer water-cooling capacity of 5 to 180 tons in water-cooled configuration and air-cooled capacity of 5 to 30 tons.

Evaporative cooling tower cells are fully assembled up to 175-ton size; larger units are also available. Supplied with the cells are the pump-tank sets in either basic design or full-feature design with diagnostics and standby pumping.

The ATC series is a combination closed-system unit with 30-60 F cold-water circuit and a hot-water circuit 200 F above the cold-water circuit at 250 F.

Mold-temperature controllers for both water and oil range from 15 to 100 gpm. Water units have closed or open cooling with solid-state temperature control or microprocessor-based controls. Oil units include microprocessor controls and can be supplied with an optional cooling circuit.

CONAIR TEMPRO THE CONAIR GROUP, INC.

Offers a line of water temperature controllers that include three Thermolator units--tempTrac, microTrac 1 and microTrac 3. All three units feature an exclusive two-piece casting design, which eliminates as many as 40 leak-prone fittings per zone. An "ultra-performance" pump package is also available, featuring 50% better pump performance for improved cooling capacity.

An expanded central chiller product line includes air-cooled outdoor and water-cooled indoor central chillers. Water-cooled chillers from 20 to 130 tons are equipped with Copeland reciprocating discus compressors with cylinder unloading. Air-cooled models from 20 to 200 tons are also equipped with Copeland discus compressors.

Also available are water-cooled chillers from 105 to 500 tons with vertical screw compressors; a complete line of pump assemblies, including 200-, 400-, and 1400-gal, rotationally molded PE tanks, as well as stainless and epoxy-coated steel tanks; and cooling towers from 20 to 500 tons. Blown film coolers are now available to 5000 cfm, along with a wide range of portable chillers and complete central-chilling engineering services.

Company's line of 42 portable chillers (20 water-cooled models and 22 air-cooled versions), ranging from 3.25 to 40 hp, offer two versions of controls and seven swing-out access panels that allow easy access to and maintenance of parts and components.

COOLING TECHNOLOGY, INC.

Manufactures and designs process cooling systems and equipment. Company offers a complete and comprehensive line of both air- and water-cooled chillers, temperature-control units and cooling tower systems.

Chiller line includes the Mini-Portable (1 to 10 tons), the Portable (5 to 40 tons), the Multi Circuited (20 to 140 tons) and the Direct-Drive units (30 to 200 tons). Cooling tower systems range from 10 to 500 tons and can be supplied with metal or fiberglass tower cells. Temperature-control units are available in sizes from 3/4 to 15 hp.

Company has developed a chiller specifically for extrusion applications and also has a patent pending on a Direct Freon Injection unit designed to reduce cycle time on hard-to-cool molds.

DELTA COOLING TOWERS, INC.

Offers a large selection of polyethylene noncorrosive cooling towers.

Company's Pioneer cooling tower, reportedly the first noncorrosive PE tower on the market, and its Paragon cooling tower, said to be the only noncorrosive PE induced-draft tower, offer some of the following principal features:

* Industrial-grade materials of construction for low maintenance costs for the life of the equipment.

* Modular, pre-assembled and lightweight for simple, fast and economical installation, plus easy future upgrades.

* Integrated equipment packages with automatic process controls completely pre-assembled, pre-wired, pre-piped and skid-mounted, if required.

DELTA T SYSTEMS, INC.

Manufactures a complete line of water- and oil-circulating temperature control systems. Single- and multiple-zone units are available in direct-injection or closed-circuit, compact and upright styles. Equipment can be manufactured to customers' specifications.

EDWARDS ENGINEERING CORP.

Offers liquid chillers in 26 models from one through 240 tons. Air-cooled or water-cooled units feature large stainless-steel reservoirs, as well as the following features: walk-in weatherproof equipment enclosure; automatic capacity control from zero to 100% with double pump arrangement; damage-resistant evaporator design if chiller freezes internally; and heat-saver option for free hot water.

Additional standard features include: automatic air elimination; automatic heat-pressure control on outdoor air-cooled models; single central control panel; multiple indicating gauges; closed water system; inside or outside installation; and portable units with casters.

GC INDUSTRIES, INC.

Supplies a full line of liquid-cooling equipment for injection molding, blow molding, extrusion and compounding.

* Portable chillers are durable, compact and self-contained. Units are air- and water-cooled in the range of 0.5 to 50 tons and designed to provide coolant in the range of 20 F to 65 F. Hermetic and semi-hermetic designs are available. All units have power-saving hot-gas bypass systems, noncorrosive stainless-steel and copper heat exchangers, stainless-steel pumps and tanks. Air-condensing units have fully sized condensers to maintain capacity at high ambient temperatures. Water-condensing models have a water-saving automatic regulating valve. Special low-temperature chillers come with the capability of temperatures down to -40 F.

* Central chillers are self-contained or split systems for interior or exterior installation. Units are both air- and water-cooled and sized from 5 to 400 tons.

* Cooling towers come sized from 6 to 500 tons.

* Tank and pump sets for central chillers and cooling towers are custom designed and built to customer requirements.

A.C. HAMILTON, INC.

Offers a selection of direct- or indirect-cooling liquid-temperature controllers with pump sizes from 1/2 to 3 hp and 3-12 kw heating. Control packages can be selected from a variety of solid-state or microprocessor configurations.

Company's 2000 series of portable air- or water-cooled chillers comes in sizes from 2- to 35-ton chilling capacity and include NEMA-rated components, solid-state temperature controllers, semi-hermetic compressors and hot-gas bypass as standard.

Also offers complete process water systems, including central chillers, pump tanks, and cooling towers. Heat-recovery systems are available for recovering process heat and using it to supplement plant heat during winter.

IMS CO.

Offers a full range of circulators for mold-temperature control. All have easy-to-read gauges and easy service access to all components. Closed-circuit WaterStar and Temkon SS hot-water circulators have stainless-steel tanks. Water-Star units have four cooling options, including self-contained air-cooling. HV65 hot-water circulators feature rust-resistant, stainless-steel and copper plumbing for direct cooling; proportional controller; and high- and low-pressure protection. Units are also convertible for vertical or horizontal use.

A Model 6 oil-heating circulator has a maximum temperature of 400 F; Model 8 has a maximum temperature of 550 F.

Also available are air-cooled chillers in 1/2-, 1-, 3- and 5-ton sizes. Units are portable, require minimum maintenance, and are self-contained. Other sizes can be made to order, and water-cooled chillers are available on request.

INDUSTRIAL ENERGY CONSERVATION, INC.

Offers self-contained air- and water-cooled chillers with capacities from 1/2 to 500 tons. Optional equipment includes pumps, tanks, and special materials of construction. Industrial-quality wiring is standard with optional JIC and hazardous-area wiring. Special control and instrumentation options are also available.

KLEEN-RITE INC.

Offers a series of recirculating water chillers that use a plate-type heat exchanger. A fluorocarbon refrigerant is on one side of the plate and water on the other side. Temperature changes reportedly can be accomplished in about 5 sec. Units are available in 1- to 5-ton capacities for temperatures from 40 F to 110 F, and are controlled either by a remote bulb thermostat or electronically.

LOGIC DEVICES, INC.

Firm originated and manufactures negative-pressure leakstoppers and negative/positive-pressure mold-temperature controllers for up to 400 F. The Vac-U-Temp is a general-purpose temperature controller available with negative and positive pressure modes, usable simultaneously. In addition to controlling temperatures, it stops leaks, improves part quality, and reduces cycle times; and it uses water and other heat-transfer fluids.

Company has developed patented processes for venting molding gases into the fluid lines and cooling long, thin cores by transferring water between mold halves through any size core. Free design consultation on company's mold venting and cooling is available.

MARVEL EQUIPMENT CORP.

Offers heating and cooling units for water or oil temperature control up to 655 F (water units to 285 F), for injection molds, extruders, rolls, storage tanks, presses, screws and other applications.

Mold-temperature control units are manufactured by Regloplas AG of Switzerland. The optional RT-40 microprocessor control system, along with RS232C interface, makes it possible to connect to the process-control system of the production installation. The RT-40, with serial interface, allows storage of parameters to 16 different consumers.

MATSUI AMERICA, INC.

Three series of water- or oil-circulating mold-temperature controllers are offered. MC Jet III series has digital setting and indication of both setpoint and actual values, as well as delta-T. Entering and returning fluid temperature, or actual mold temperature can be displayed. Seven alarm LEDs, PID temperature control and an electronic timer for auto-starting are provided. RS232C communications are optional. Three models have motor drives from 0.33 to 1 hp and heater capacities from 3 to 8 kw, providing fluid temperatures up to 390 F.

The more powerful MC Jet III-X units have enlarged pump capacities (1.5-2.9 hp). Ten models offer heater capacities from 8 to 10 kw for control at up to 390 F.

MultiJet II combination hopper loader, dryer and mold-temperature controller in one compact, mobile cabinet incorporates one of three models of MCII water or oil mold-temperature controller, with 0.33-hp motor and 3-kw heater capacity for fluid temperatures to 320 F.

Eight models of MKC water-cooled chillers have FRP water tanks and open-type compressors. Pumps range from 0.5 to 2.9 hp.

MOKON DIV. PROTECTIVE CLOSURES CO.

Offers a complete line of circulating water and oil temperature-control systems with a temperature range of ambient to 600 F.

Water systems, with a maximum operating temperature of 300 F and pumping capacities up to 120 gpm and 60 psi, are available in cabineted and uncabineted series. Nonferrous construction assures long service life and guards against corrosion. A combination heating/chilling unit is also available to provide a full range of temperature control from 35 F to 250 F, with up to 20 tons of chilling capacity.

Oil systems, with company's cool oil reservoir that eliminates thermal shock associated with in-line shell-and-tube heat-exchanger cooling, are available with up to three zones of independent control within the same cabinetry and a pumping capacity of 30 gpm and 100 psi, with a maximum operating temperature of 600 F.

Company specializes in custom temperature-control systems to suit specific requirements and also carries its Leakmaster line of negative-pressure systems designed to eliminate processing problems associated with leaks.

POLYSCIENCE

Manufactures a line of compact liquid chillers and recirculators. Compact chillers with cooling capacities ranging from 500 to 15,000 Btu/hr incorporate positive-displacement pumps that deliver temperature-controlled fluid in a closed-loop or open-tank circulation system. A variety of pumps are available to meet most flow and pressure requirements. Hot-gas bypass control maintains stable temperature control, even under intermittent load conditions; and quiet, hermetic compressors are employed. Chillers are designed to replace tap-water cooling, reducing costs and problems associated with municipal water supplies such as scale build-up, fluctuations in temperature and pressure, and rising sewerage costs.

Company also offers a complete line of microprocessor-controlled heating and cooling recirculators that provide clean, recirculating coolant within a temperature range of -31 F to +392 F with a control stability of |+ or -~0.02|degree~ F. Three types of temperature controllers are available to meet most requirements. A programmable PID microprocessor controller can be interfaced with a PC to permit sophisticated temperature profiling suitable for accelerated aging, curing or thermal-stress experiments. Digital controllers provide precise control where programmable control is not needed. Basic analog controllers are available for more routine temperature applications.

As an OEM supplier of fluid temperature-control and mechanical refrigeration systems, company's engineers work closely with customers to ensure reliability, efficiency and cost-effectiveness. For many applications, modification of a standard product will meet most requirements, thus minimizing design, engineering and production costs.

PROCESS EFFICIENCY PRODUCTS

Offers a complete line of cooling and process-water filters. Using permanent filter media, the system removes particles as small as 5 microns. The filter reduces fouling of cooling equipment, and maintains efficiency and low kw usage. Filtration improves the quality of water, which eliminates draining and flushing of equipment, lower chemical cost, and prevents downtime.

PROGRESSIVE EQUIPMENT CORP.

Offers an electronic water-treatment system that can include an electronic water treater, full-flow bag filter, and automatic blow-down valve. The treater removes scaling and fouling from pipes electronically without chemicals. As the electronically treated water passes through the system, existing scale is etched away, thus increasing the system's cooling potential, which reportedly can yield longer equipment life, decrease downtime, and improve operating efficiency. A high-capacity, full-flow bag filter works in conjunction with the treater. The bag filters offer an alternative to bulky "Y" strainers and sand-and-gravel filters; according to the company, they offer full-flow filtration at a reasonable cost and reduce downtime, conserve water, and are clean and easy to operate. A sentinel pressure-drop alert system detects pressure drops across filter media as low as 3-5 psi.

QUALITY PROCESS CONTROL SYSTEMS INC.

Manufactures liquid-circulating temperature control equipment, which includes portable chillers, and water- and oil-circulating units. Custom systems are also provided.

Air- and water-condensing portable chillers from 1 through 15 tons with hermetic and semi-hermetic compressors are available. All-copper, insulated piping, insulated steel reservoirs, hot-gas bypass, and stainless/copper heat exchangers are all standard. A line of compact and upright, single- and multiple-zoned, water-circulating units, either digitally or microprocessor-controlled, are available. Standard features include horizontal pump with seal flush, flanged, vertically mounted low-watt-density immersion heaters; internal bypass; turbulent flow; and hinged access panels.

Single- or multiple-zoned high-temperature, oil-circulating units are digitally or microprocessor-controlled. Centrifugal pumps with seal cooling are standard. Low-watt density, flanged immersion heaters, hinged access panels, over-temperature safety, internal bypass, process shut-off valves, pressure gauge, and function lights are all standard.

R.J. INDUSTRIES, INC.

Offers replacement water and hot-oil pumps to fit most brands of chillers, mold-temperature controllers, cooling towers, and various water-cooling systems. Pumps match up exactly and are sold under brand names such as Scot, Burks, Aurora, Sherwood, B&G, Price, and Worthington. A cross-reference of OEM pumps has been compiled to permit quick identification of replacement seal kits and other parts. Obsolete and discontinued models have also been cross-referenced to presently available replacements.

REGLOPLAS AG

See Marvel Equipment Corp.

SCHREIBER ENGINEERING CORP.

Company has added a new 7 1/2-ton, 90,000-Btu unit to its line of air- and water-cooled chillers. The chiller has a tilted control panel for easier operation, cycles on/off as needed, uses no hot-gas bypass, and has "contamination-free" bronze water pumps.

Company's full line of chillers range from 1/2 to 20 tons and feature water systems designed for unrestricted circulation and proper turbulence in the heat exchanger; elimination of the use of anti-freeze; extra-large stainless-steel, non-contaminating reservoirs; Tecumseh compressors; electrostatic polyester powder coating for long life; and conventional fittings, parts, and motors for easy replacement.

STERLING, INC. INDUSTRIAL CONTROLS DIV.

Manufactures a complete line of water- and oil-circulating temperature-control units. Each system features its own circulating pump, thermostat and operating controls. Units can be supplied in operator-height vertical cabinets or low-profile compact cabinets where space is a primary concern. Customized engineered systems can be supplied and built to specifications.

The 9300/9400 Series of water-circulating temperature-control units (new in 1992) covers temperature ranges from water supply temperature to as high as 300 F, when adequate water supply pressure is available. The standard unit features a 9-kw, low-watt-density, copper sheath heater with pumping capacities ranging from 1/2 through 5 hp. Optional heaters up to 24 kw are available in the standard cabinet design. Units can be manufactured in single-, dual- or three-zone construction and feature common electrical and water supply connections. They can be supplied with either a microprocessor-based or solid-state digital controller. Options include computer interface capability (RS232, RS422, RS485, SPI Protocol), special alarms, JIC/NEMA 12 construction, nonferrous plumbing, and special power requirements. Each system features dual 1000 ohm platinum RTD sensing probes (used by the Bureau of Standards), low-watt-density heaters with copper sheath elements that provide thermal conductivity, 1/2 and full-heat capability, variable timed cooling (VTC), specially engineered "Sterlseal" pump seal that minimizes downtime, and high-technology controllers.

The 3300/3400 Series temperature-control units provide the same features and capability as the 9300/9400 Series. Products also include an advanced electrical protection package and meet NEC (National Electrical Code) standards. They are designed to provide complete protection to operators, plant wiring, and the temperature-control system. All systems feature a warranty program covering major components and microprocessor controllers up to seven years.

The high temperature-control systems cover temperatures to 650 F. Heater sizes range from 6 to 300 kw with pumping capacities ranging from 10 to 600 gpm. Low-watt-density heaters, heavy-duty positive-displacement circulating pumps, push-button controls, and safety components are a few of the standard features. Additionally, an automatically controlled cooling feature is offered, which utilizes a specially constructed heat exchanger. Units are available in single- and dual-zone construction and can be provided with a variety of controllers. NEMA 12 construction is standard in 550 F systems.

STERLING, INC. STERLCOOL DIV.

Manufactures portable chillers, as well as central chillers, cooling towers, pump tanks, water filtration equipment, with installation and start-up assistance.

Portable chillers come in air- and water-cooled models from 1- to 30-hp capacities. Units supply chilled water from 0 F to 75 F in a variety of flows and pressures, using single- and dual-pump systems. Features include full PID autotuned microprocessor controls; 40-gal insulated integral reservoir; centrifugal recirculating pumps up to 1 1/2 hp; nonferrous reservoir and internal piping, and semi-hermetic copeland "discus" compressors on units of 15-hp and larger; hot-gas bypass capacity control with accuracy to |+ or -~1|degree~ F; shell-and-tube evaporators, and cleanable shell-and-tube condensers on water-cooled models; and high-efficiency fin-and-tube condensers on air-cooled models.

Company also offers a line of air- and water-cooled central chilling systems to 300 tons, cooling towers to 900 tons, pumps, pump tanks, and water filtration systems.

TUC INC.

Manufactures a line of liquid-circulating temperature-control equipment, including water and hot-oil temperature controllers, and portable chillers.

Water units are available in upright, low-profile and subcompact configuration. Controllers, either digital or microprocessor, are available. The microprocessor unit has RS232C, RS422 and RS485 capability. Dual-probe sensing, solid-state control and horizontal pumps with seal flush make units simple to operate. Single- and multizone models with many options and special features are available.

Hot-oil systems range in temperature from 100 F to 500 F. Centrifugal pumps, incorporating water-cooled seals are standard. Heater capacities from 6 kw and up are available. Units come in upright and compact models, as well as multizone configurations.

Portable chillers are available with both air- and water-cooled condensing from 1 to 20 tons. Standard for all chillers are hot-gas bypass, stainless-steel or nonferrous fully insulated reservoir tanks, all-copper piping, and freeze-stat control.

TEMPTEK, INC.

Designs and manufactures mold-temperature controllers, portable chillers, pump-tank stations and cooling-tower cells. Offers fluid circulating temperature-control products that are designed for mechanical simplicity and operator convenience, utilizing ultra-rugged construction, fewer components and standardized production.

Temperature controllers are available in both water and hot-oil open- and closed-loop configurations. Water units control to 250 F, oil-circulating units to 400 F. Small, space-efficient units are equipped with high-flow pumps, flanged heaters, and advanced electronic instrumentation with remote capabilities.

Portable chillers and chilling modules are available in air- and water-condensed versions. Units range from 1 to 20 tons with operating temperatures from 30 to 70 F. Chilling modules range from 5 to 30 tons with operating temperatures from 20 to 60 F.

Pump-tank stations are designed to utilize minimum floor space, while emphasizing the vertical dimension for water storage. Standard process connections for pumps, sensors, drains, and water-level controls make installation easy.

Cooling towers are available in galvanized metal or fiberglass construction from 10 to 480 tons, and employ energy-efficient prop fans, generously sized wet decks, and a large water reservoir.

THERMAL CARE/MAYER DIV. MIDWESCO, INC.

Produces a complete line of process cooling equipment and temperature-control systems. Product line includes:

* Portable chillers in self-contained air- or water-cooled designs from 1/2 to 40 tons.

* Air-cooled central chillers with heat-reclaim indoor units or low-ambient protected outdoor units in capacities up to 200 tons.

* A complete line of central chillers from 40 to 125 hp with semi-hermetic, direct-drive, or belt-drive units.

* Fiberglass cooling towers in sizes from 2 to 800 tons. Units are lightweight and offer corrosion-resistant capacity with a lower horsepower fan.

* Pump/tank assemblies in any size and configuration for tower or chiller applications.

* Water treatment systems designed to control scale, corrosion, suspended solids and microbiological growth.

* Temperature controllers that include microprocessor control, low-watt-density insulated heaters, high-temperature safeties, 1/2-heat operation, and complete diagnostics.

WEST COAST PLASTICS EQUIPMENT

Offers two lines of California-built chillers, Schreiber and Arctic, particularly suited to Western hard-water conditions, in capacities from one ton to over 250 tons. Also offers mold-temperature controllers by TEW (Taiwan) in 3- and 5-kw ratings that reportedly make it possible to circulate water or oil medium up to 302 F in a single, trouble-free unit.

Company distributes cooling towers by three builders: Marley's conventional towers, BAC's fluid coolers, and Liang Chi all-fiberglass towers. Units range in capacity from 3 to 200-plus tons.