Liquid temperature-control equipment.

ADVANTAGE ENGINEERING, INC.

Fluid-circulating equipment for molding, extrusion, and thermoforming includes portable chillers and plantwide central systems. Portable chillers from 1- to 30-ton capacity in air- and water-condensed designs. Central chillers from 10 to 500 tons in air- and water-condensed outdoor and indoor systems.

Water- and oil-circulating mold-temperature controllers. Water units operate between 30 F and 250 F. Oil units operate between 100 F and 500 F.

Cooling-tower systems from 20- to 1000-ton capacity. Metal and fiberglass tower cells. Related pumping equipment can be custom-designed. Open- and closed-loop designs standard. Engineering services included with central cooling systems. Equipment can be computer-connected for remote control, information collection, and data storage.

AEC/APPLICATION ENGINEERING

TrueTemp water-temperature control units with 3/4- to 10-hp pumps and standard stainless-steel sheath heater selection from 9 to 24 kw. Off-the-shelf microprocessor control with easy-to-read LED, dual display of setpoint and process temperature, optional SPI communication protocol, and full-feature graphic display panel. Low-profile cabinet designed for stacking and easy maintenance. Standard options include VacuFlow negative/positive pressure units, system water purge, modulating cooling valve, and closed-loop heat exchanger.

TDW-M "mini" TrueTemp series features small footprint and serviceable two-piece cabinet design with hinged electrical panel and operator interface. Compact 9- and 12-kw direct-injection water units include field-proven off-the-shelf microprocessor controls with graphic panel and easy-to-read display. "Crash Cool" feature accelerates process cooldown. Optional motorized modulating valve gives high accuracy under varying loads and helps reduce water hammer.

TDH TrueTemp hot-oil unit designed for high-temperature heating and cooling applications from 100-550 F. Self-contained units offer optional U-type heat exchanger that withstands thermal shock. Standard off-the-shelf microprocessor temperature control accurate to 1 [degree] F.

Portable air- and water-cooled chillers from 1/2 to 40 tons. Ultra-compact PS series air- and water-cooled chillers from 2 tons have off-the-shelf fuzzy logic microprocessor controls, scroll compressors, and brazed-plate evaporators.

Versatile Glacier series chiller line in air- and water-cooled models from 5 to 40 tons. Serviceable cabinet design and 400 gal noncorrosive polyethylene reservoir. Standard off-the-shelf microprocessor controls accurate to [+ or -]1[degree] F with dual LED display of setpoint and supply temperature. On 15-ton units and larger, Discus compressors are standard to help optimize energy efficiency.

Air- and water-cooled central chillers with or without integral pump tank. One-, two-, or three-circuit configurations from 10 to 180 tons. DDW series direct-drive central chillers in models from 40 to 150 tons. Units have open compressors and use 15-20% less energy at 100% load compared with chillers having semi-hermetic compressors.

Pinnacle series small-footprint central chilling stations use scroll compressors, brazed plate evaporators, and an integral stainless-steel reservoir. PLC controller with color touchscreen interface displays operating conditions and diagnostics. Units available with two or three independent refrigeration circuits from 30 to 90 tons in water- or remote air-cooled versions.

BFC series air coolers provide air-ring cooling at constant temperature, pressure, and volume. Available up to 5000 cfm. Cooling-tower systems for condenser and molding machine hydraulics come in Polymer Tower forced-draft and fiberglass induced-draft models from 50 to 200 tons. (See ad p. 263.)

AFFINITY INC.

Compact, high-capacity chillers with standard remote control. Units from 10,000 to 156,000 Btu/hr achieve [+ or -]1[degree] F stability and give unrestricted access to all components. Nonferrous coolant loop, no-flow and low-level alarms, hot-gas bypass for long compressor life, high/low-temperature alarms, and high-capacity heat exchanger for high heat-transfer efficiency. Digital-readout (C/F) microprocessor is programmable and autotuning. Units typically 30% smaller than other chillers.

ALPHA EQUIPMENT CO.

Product line includes:

* Portable chillers, water- and air-condensed, from 2 to 60 hp.

* Central chiller systems, water- and air-condensed, from 20 to 160 hp.

* Cooling-tower systems from 4 to 1200 tons.

* Cooling-tower cells - fiberglass models from 15 to 220 tons, galvanized models from 6 to 1000 tons.

* Water-filtration systems for cooling-tower water and glycol chilled-water systems.

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

* Liquid temperature controllers, open- and closed-circuit systems, single- and dual-zone units.

* Air-ring coolers for blown film cooling, 800 to 7000 cfm.

* Pump/tank assemblies, 150 to 1500 gal, of double-welded steel with multiple pumps.

ALPHA MARATHON TECHNOLOGIES INC.

Portable, serf-contained air-cooling units for blown film production. Capacities from 500 to 1500 cfm, it can be readily added to any existing air ring to improve bubble cooling. Large-surface cooling coils cool air. Propeller drives have permanently lubricated bearings. Customized designs available.

AMCOT COOLING TOWER CO.

Counterflow and crossflow low-noise fiberglass cooling towers and high-temperature cooling tower with capacity of 212 F. Induced-draft counterflow design with axial-flow fan mounted on top of tower to draw air out. Low internal pressure loss and bottle-shaped design ensure efficiency and space economy. Casing made of nonrusting fiberglass-reinforced polyester helps protect against impact damage. Fill material is honeycomb heat-embossed PVC formed to permit high heat transfer and maximum air-to-water contact.

AMERICAN HYDROTHERM CORP.

Roll-heating and cooling control systems use high-temperature water and heat-transfer oils for temperatures from 200 to 700 F. Heat sources include steam, electric heaters, and fuel-fired heaters.

AMERICAN INTERNATIONAL ELECTRIC

Automatic mold-temperature controllers offer portability, automatic alarming device, high-precision temperature control, stainless-steel storage tank, and transparent water/oil level glass.

APPLICATION ENGINEERING See AEC/Application Engineering.

APPLIED PROCESS EQUIPMENT

Water-chilling, water-cooling, water-recovery, and water-filtration systems include portable, central, and heat-pump chillers in water- or air-cooled versions. Open and closed central cooling-tower systems. Closed systems available with plate-and-frame stainless heat exchangers. All systems come with complete engineering drawings and warranty for a full year on parts and labor.

ARCTICHILL, INC.

Chillers and modular chilled-water systems range from 1- to 30-ton capacity with indoor and outdoor, air- and water-cooled models. Options include open, closed, vertical, and horizontal systems.

Cooling towers in sizes from 5- to 1000-ton capacity are built from FRP materials with PVC filler and piping. Specializes in developing complete systems.

BALTIMORE AIRCOIL CO.

Evaporative-cooling equipment includes cooling towers in crossflow and counterflow configuration, with modular units to 2110 tons/32 million Btu/hr, and field-erected towers to 25,000 gpm/cell. Evaporative condensers, closed-circuit cooling towers, heat exchangers, thermal-storage units, and microbiological controls available.

Equipment available in hot-dipped galvanized steel, fiberglass, or stainless steel. Field-erected models made of wood, steel, concrete, or pultruded structural composite materials. Heat exchangers in plate-and-frame and shell-and-tube configurations. Microbiological control employs iodine to control growth of bacteria, slime, and algae.

BERG CHILLING SYSTEMS INC.

Cooling equipment includes central systems with semi-hermetic open drive or screw compressor; air-cooled units with heat recovery; water-cooled units with "free cooling"; clean-water tower systems; prepackaged mezzanine systems; portable chillers; blown-film coolers; temperature-control units; chemical-treatment packages; mold-area dehumidifiers; and water-filtration systems.

Noncorrosive fiberglass towers feature low-hp motors and structural-steel bases.

BUDZAR INDUSTRIES, INC.

Hot-water and hot-oil systems; negative-pressure hot-oil and hot-water systems; air- and water-cooled portable, self-contained, and central chillers; cooling towers; and pump-tank sets.

Hot-water units in steam or electric heating, direct or closed-loop cooling, portable or stationary in single and multizone configurations from 50-300 F.

Hot-oil units, portable or stationary, ranging in single and multizone configurations from 350, 450, 550 or 650 F.

Negative-pressure hot-oil or hot-water units incorporate an on-board vacuum pump to generate a controlled and reliable negative pressure. Design allows for adjustment of negative pressure as needed. Molds can be evacuated of all hot oil or hot water prior to changeout. Negative-pressure units can be filled from fluid source using vacuum pumps.

Air- and water-cooled chillers, portable and self-contained, with refrigeration and water circuits piped and wired, 3 to 80 tons.

Central chillers have dual-refrigeration circuits, easily serviceable components and full unit frames for component protection. Range from 5 to 400 tons for both air- and water-cooled systems.

Cooling towers in standard galvanized and FRP configurations, 10 to 400 tons.

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

CHROMALOX WIEGAND INDUSTRIAL DIV.

Stock and pre-engineered microTherm CMX mold-temperature control units ensure precise and compact control of water temperatures from 50 to 250 F. Designed for injection and extrusion applications, the system consists of three major components:

1) Custom-cast heat/cool chamber assembly has two chambers for integrated water temperature control capabilities. Corrosion-resistant Incoloy sheath elements provide heat input to 24 kw. Open- and closed-loop cooling options.

2) High-performance, vertical-mounted centrifugal pump with flow rates from 30 to 80 gpm. Pump housing flange provides virtually seamless coupling with heating/cooling chambers.

3) Touch-panel operator console incorporates 2104 digital microprocessor-based temperature controller with separate PID algorithms for heat/cool modes and dual setpoint and process displays, process pressure gauges to monitor "to and from" process pressures, plus pump switch and diagnostic indicators.

Modular hydraulics (heat pump/chamber) and fastener-free cabinet provides ease of service and trims downtime.

CINCINNATI MILACRON PLASTICS TECHNOLOGIES GROUP

Portable chillers from 1 to 30 tons have solid-state or microprocessor-based controls. Central chillers and central-chiller modules offer cooling capacity of 5 to 180 tons in water-cooled configuration and air-cooled capacity of 5 to 30 tons.

Evaporative cooling-tower cells assembled up to 175 tons and larger. Pump, tank sets in basic or full-feature design with diagnostics and standby pumping.

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

Mold-temperature controllers for water and oil from 15 to 100 gpm. Water units have closed or open cooling with solid-state or microprocessor-based controls. Oil units include microprocessor controls and can be supplied with optional cooling circuit. (See ad p. 53.)

CITO PRODUCTS INC.

MoldMonitor pulsed-cooling temperature-control system consists of a single- or multiple-zone controller, heat sensor, and solenoid valves. Unit divides a mold into zones depending on the geometry of the mold and the distribution of heat load. It places a high-resolution thermistor sensor within 0.100 to 0.500 in. of the part surface to sense temperature increase as plastic enters the mold. The unit's microprocessor uses this information to start and stop a burst of cold water right after the mold has been filled. The pulse of water is triggered by the hot melt raising the cavity temperature near a thermistor beyond a threshold set for the type of plastic being molded. Timing of the pulse is based on the amount of BTUs to be removed from the part. The cooling pulse is never throttled. If more or less cooling is needed, MoldMonitor adjusts the length of the cooling pulse.

THE CONAIR GROUP, INC.

Thermolator water-temperature controllers offer selection of control sophistication and two-piece casting that eliminates up to 40 leak-prone fittings of conventional controllers. Models with tempTrac solid-state controls are single-zone, direct-injection units with pump sizes from 0.75 to 7.5 hp and 9 to 24 kw heaters.

Thermolators with microTrac 2 and microTrac 3 microprocessor controls offered in single- or dual-zone, direct-injection models with 9- to 48-kw heating and single- or dual-zone, closed-circuit models with 9- to 24-kw heating. Pump sizes from 0.75 to 7.5 hp.

Ultra-performance pump, standard on microTrac 3, is optional for all Thermolators and can increase pump performance by up to 50%.

Miniature microtemp water-temperature controllers available with a choice of 1/3- or 1/2-hp pumps and 3- or 6-kw heaters. Units equipped with cast internal construction, tool-free access panels, and snap,in digital controllers.

Thirty-two microTrac portable chillers from 3.25 to 40 hp in air- or water-cooled designs with choice of two microprocessor controllers. Also microKool mini chillers from 1.5 to 12 hp, air- or water-cooled.

Central chillers include outdoor, air-cooled packages in 20- to 160-ton capacities and single-, dual-, and multiple-compressor designs, as well as indoor, water-cooled central units from 10 through 140 tons. Copeland semi-hermetic, discus compressors are standard.

Pump-tank assemblies for central systems include 180- to 1100-gal roto-molded PE tanks or stainless-steel reservoirs from 400 to 4000 gal. Pumps are from 1.5 through 100 hp.

Cooling towers come in capacities from 20 to 200 tons or larger. Heavy-duty, multimedia bypass filters available.

CONTINENTAL PRODUCTS INC.

Water-chilling systems include industrial open-drive chillers with compressors that eliminate motor burnout, costly cleanups or extended downtime; energy-efficiency ratios of 16 or more; built-in capacity control in response to suction pressure; and positive unloaded start. Extra-quiet models and explosion-proof options.

CMA portable air-cooled water chillers have high-efficiency hermetic or semi-hermetic compressor, fully insulated chiller, air-cooled condenser, insulated water reservoir, solid-state temperature controller with readout, built-in freeze-stat, 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.

CMW portable water-cooled water chillers are similar in construction to CMA units, but have water-cooled condensers.

COOLING TECHNOLOGY, INC.

Air- and water-cooled chillers, temperature-control units, cooling-tower systems, and central turnkey systems.

Mini-portable chillers are from 1 to 15 tons and use Scroll compressor technology. Compact portables range from 7.5 to 60 tons. Both have all nonferrous chilled water circuits. Also available are multicircuited units from 20 to 300 tons, open direct-drive chillers from 30 to 150 tons, and cooling-tower systems from 20 to 400 tons and above. Temperature controllers with 0.75 to 7.5 hp pumps have all nonferrous liquid path and lifetime corrosion warranty.

Specialty cooling equipment includes extrusion bath cooling systems. Also provides custom-engineered equipment.

DELTA COOLING TOWERS, INC.

Polyethylene noncorrosive cooling towers include Pioneer forced-draft line, which is factory assembled in single modules from 10 to 150 tons. Paragon induced-draft towers also factory assembled in single modules from 100 to 250 tons.

Vanguard air strippers are from 1 ft to 5 ft diam. packed columns. Custom designs over 5 ft diam. packed columns available.

Integrated packages can be pre-assembled, prewired, prepiped, skid-mounted, and include process controls.

DELTA T SYSTEMS, INC.

Water-circulating temperature-control systems feature horizontal pumps that extend seal life and copper sheath heater element that maximizes heat transfer. Units come in single- or multiple-zone configurations operating to 300 F and conforming to NEMA-1 specifications. Custom designs available.

HB upright series comes with standard 9-kw heating element; fully programmable, microprocessor-based PID digital controller; and pumping capacities from 3/4 to 5 hp. Larger capacities available.

A and B series with 4.5- and 9-kw heaters and 1/3- and 1/2-hp motors are suitable for smaller molding machines.

Oil-circulating systems operate to either 400 F or 550 F. Units offer low-watt-density, steel sheath heater elements; long-lasting, positive displacement, mechanical seal pumps; and fully programmable, microprocessor-based PID digital controller. Heater sizes from 6 kw and up, pumping capacities from 10 gpm and up, and single- and dual-zone configurations. Built to NEMA-1 or NEMA-12 electrics.

EDWARDS ENGINEERING CORP.

CF-Series liquid chillers include 1/2- to 60-ton water-cooled and air-cooled units with a nonferrous coolant circuit, storage reservoir and circulating pump, electronic operating temperature control with [+ or -]1 [degree] F accuracy, and a digital display. All are prepackaged and mounted in a cabinet with casters.

Additional liquid chillers are offered through 240 tons. Air- or water-cooled units have large stainless-steel reservoirs, as well as a walk-in weatherproof enclosure, automatic capacity control from 0100% with double-pump arrangement, and damage-resistant evaporator design.

Chiller features automatic air elimination, automatic head-pressure control on outdoor air-cooled models, single central control panel, multiple indicating gauges, and closed water system. Indoor or outdoor installation, completely prepiped and prewired, and factory tested.

EVAPORATIVE COOLING TECHNOLOGIES

Cooling towers or complete installation of chilled water-cooling systems. Specializes in cooling tower replacements and rebuilding, pumping stations, and chilled water-storage tanks. Parts and service for all makes of cooling towers and pumps. Services include preventative maintenance programs.

FASTI USA INC.

Heavy-duty component portable air- and water-cooled self-contained water chillers from 1/4 to 35 hp. All use digital microprocessor controls, have reciprocal and scroll-type compressors, and evaporators designed for close temperature control and low pressure drop. Central air- and water-cooled units available up to 250 tons with remote air-cooled condensers, low ambient temperature controls, and stainless-steel reservoirs with high quality pumping stations.

Cooling tower systems made of fiberglass, stainless steel, and coated galvanized steel. Tanks available in stainless steel, plastic, and urethane-coated steel. Pumps come mounted and piped to the tanks along with electrical control cabinets factory wired.

FOREMOST MACHINE BUILDERS INC.

Air- and water-cooled portable chillers, indoor and outdoor air- and water-cooled central chillers, cooling towers and chemical treatment packages, pump, tank sets with options for standby pumps, discharge headers, filter systems, and central control and alarm panels.

GC INDUSTRIES, INC.

Durable, compact, and self-contained portable chillers, air- and water-cooled in 0.5 to 100 tons, provide coolant in the range of 20 F to 65 F. Hermetic and semi-hermetic units have power-saving hot-gas bypass systems, noncorrosive stainless-steel and copper heat exchangers, and 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 capability down to -40 F.

Central chillers are self-contained or split for interior or exterior installation, air- and water-cooled from 5 to 120 tons.

Cooling towers in sizes from 6 to 500 tons. Also custom designs. Tank and pump sets for tower systems.

HAAKE

Circulator line consists of temperature-control modules and bath vessels. More than 70 circulators, recirculators, and cryostats cover temperatures from -130 F to 572 F.

HAMILTON AVTEC INC.

Direct- or indirect-cooling liquid-temperature controllers in pump sizes from 1/2 to 3 hp and 3-12 kw heating, and solid-state or microprocessor controls.

The 2000 series portable air- or water-cooled chillers from 2 to 35 tons include NEMA-rated components, solid-state temperature controllers, semi-hermetic compressors, and hot-gas bypass.

Also process-water systems, including central chillers, pump tanks, and cooling towers. Heat-recovery systems recycle process heat and use it to supplement plant heat during winter.

IMS CO.

Circulators for mold-temperature control have easy-to-read gauges and easy service access to all components. Inexpensive Econ water circulator has polypropylene frame, zinc chromate plumbing, and stainless-steel pump. Closed-circuit hot-water circulators have stainless-steel tanks. Air-cooled TrueMold controllers are totally self-contained. Model 6 oil-heating circulator has a maximum temperature of 400 F; Model 8, 550 F.

TrueTon air-cooled chillers in 1/2 to 15 tons require minimal maintenance and are self-contained. Other sizes and water-cooled units custom-made. (See ad p. 283.)

INDUSTRIAL ENERGY CONSERVATION

Self-contained air- and water-cooled chillers 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.

INJECTION MOLDING INDUSTRIES

Pulsed-cooling temperature-control system from REPS Ltd. consists of a controller with up to four zones of control, heat sensors, an induction-heating coil, and solenoid valves. Cooling pulse is triggered from the molding press at the end of the injection phase of the cycle. Controller analyzes the mold-temperature profile over the last several cycles and calculates the length of the cooling pulse needed for the next cycle. At the start of cooling, all water valves are turned on. As the temperature of one zone reaches its setpoint, the valve controlling that zone is turned off to provide additional water flow to zones that still need cooling. An induction coil installed in the mold surrounding the core/cavity area allows heating and cooling within the same mold cycle. The coil is turned on after cooling to maintain a minimum cavity temperature and can be used for mold preheating at start-up.

KFD SALES & SERVICE, INC.

Temperature controllers for injection molding machines, extruders, and calender rolls. Water is the heat-carrying medium for operating temperatures up to 205 F (285 F in a pressurized system). Oil is used for temperatures up to 430 F. High flow rates guarantee minimum difference between incoming and outgoing temperatures.

DW air-cooled units eliminate cooling expenses. Capacities from 5 to 60 kw. Hermetically sealed cooling units have high refrigeration capacity (4-33 kw) and are safe and reliable. Special capacities available.

KLEEN-RITE INC.

Recirculating water chillers use plate, type heat exchanger and R-22 refrigerant. Units available in 1- to 10-ton capacities and as packaged or remote systems. Microprocessor-controlled, the systems have built-in bypass valve, high-pressure pump, noncorrosive storage tank, freeze protection, and low-ambient controls.

KOOLANT KOOLERS, INC.

Standard and custom industrial chillers come in several water- and air-cooled types with capacities from 5000 to 1.35 million Btu/hr at 65 F leaving fluid temperature and 95 F ambient air. Closed-loop models available for cooling molds, heat exchangers, jacketed tanks, hydraulic fluids, and central chilling systems. Features include hermetic or semi-hermetic compressors, sealed pressurized reservoirs or atmospheric reservoirs, automatic make-up, and submersed coil, brazed-plate or shell-and-tube heat exchangers.

LOGIC DEVICES, INC.

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

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

MARVEL EQUIPMENT CORP.

Water- (to 285 F) and oil-temperature control units for up to 655 F for injection molds, extruders, rolls, storage tanks, presses, screws, and other applications. Units are manufactured by Regloplas AG of Switzerland. Optional RT-45 microprocessor control system, along with RS232C interface enables connection to processing-machine controller. RT-45 with serial interface allows storage of parameters.

Series 250 and 300 dual-zone units, and low-cost Reglo 150ST unit for temperatures to 300 F with oil and 190 F with water. Also 90S compact entry-level unit to 194 F with oil or water.

MATSUI AMERICA, INC.

New MC-N series temperature controllers provide precise temperature control through a new dual-slope PID microprocessor controller. Temperatures are maintained within 0.5 [degrees] F of setpoints. Made of stainless steel and nonferrous components for durability. Using a float switch system, MC-N seals itself off from pressure and temperature fluctuations in the water supply system. Heater element is sheathed and plated to resist scaling and other harmful deposits.

Compact MC-N units require little floor space and are highly energy efficient. Available with 1/3- to 1-hp pumps and 3- to 8-kw heaters in water or oil.

Standard equipment includes dual setpoints, alarm diagnostics, 100-hr programmable timer, casters, manifolds, stainless ball, valves, and outlet pressure gauge with pressure bypass valve.

MOKON DIV., PROTECTIVE CLOSURES

Circulating water and oil temperature-control systems with a temperature range to 600 F, portable chillers, and customized fluid-handling systems.

Mini-Mokon compact water circulating system for small-tonnage machines and laboratory applications available in 2 or 4 kw and measures 23.75 x 11 x 12 in. Horizontally mounted heaters increase efficiency and improve heat transfer. Controls range from solid-state analog to microprocessor-based to custom-designed packages.

Mokon Duratherm circulating-water systems feature noncorrosive construction - copper piping and heaters, stainless-steel pump, and cast-brass heating chamber. Available with 9-, 18-, 24-, 36-, or 48-kw heating capacity and 25 to 80 gpm.

Standard water systems with max. operating temperature of 300 F and pumping capacities to 120 gpm and 60 psi. Nonferrous construction guards against corrosion. Combination heating/chilling unit provides temperature control from 35 F to 250 F with up to 20 tons of chilling capacity.

Oil systems incorporate cool-oil reservoir that eliminates thermal shock associated with in-line, shell-and-tube heat exchanger. Up to three zones of control in the same cabinet and pumping capacities to 30 gpm and 100 psi. Maximum operating temperature of 600 F.

Air- and water-cooled portable chillers from 1/2 to 20 tons. Corrosion-free construction with nonferrous plumbing, stainless-steel supply pump and evaporator, and heavy-duty plastic reservoirs.

Solid-state or microprocessor controls standard on all systems. Optional microprocessor controls with serial communication and SPI protocol.

Specializes in custom temperature-control systems and also carries Leak-master line of negative-pressure systems that eliminate processing problems associated with leaks, and D-Scaler systems, which remove rust, scale, and/or lime deposits.

MOTIVAIR CORP.

Portable, compact, self-contained, air- or water-cooled, packaged "cycling" water chillers range from 1/2 to 50 tons (1/2- to 20-ton units in stock). Include insulated large-capacity storage tank, circulation pump, microprocessor control, remote start/stop, pump pressure gauge, and full set of refrigeration gauges. Cycling concept is suitable for constant or variable cooling loads. Operating costs are directly proportional to the percentage of chiller capacity utilized.

OMEGA ENGINEERING INC.

Offers constant-temperature circulating baths, as well as full line of sensors, instrumentation, and hardware accessories to monitor and control water- and oil-circulating systems.

PLASTIC PROCESS EQUIPMENT INC.

Upright and compact fluid-temperature controls from 3/4 to 1 hp and 230 or 460 v for single and multiple zones. Digital controls, microprocessor control option, horizontal pump with seal flush for extended seal life, and seal rated for 300 F operation. Also low-pressure protection, vertically mounted flanged immersion heater, dual probe sensing, internal bypass, function lights, and hinged access panels. (See ad p. 220.)

POLYSCIENCE

Liquid chillers and constant-temperature equipment. Chillers in a variety of cooling capacities with several pump options. Temperature-control equipment for process applications and for small-scale laboratory and quality-control requirements. Controller options from basic analog control to programmable controllers capable of RS232 interface for complex time/temperature profiling.

PROCESS EFFICIENCY PRODUCTS

Cooling- and process-water filters use permanent filter media to remove particles as small as 5 microns. Filter reduces fouling of cooling equipment and maintains efficiency and low kw usage. Filtration improves quality of water, which eliminates draining and flushing of equipment, lowers chemical cost, and prevents downtime. Filters from 2 to 1000 gpm.

PROGRESSIVE EQUIPMENT CORP.

Electronic water-treatment system can include electronic water treater, full-flow bag filter, and automatic blow-down valve. Treater removes scaling and fouling from pipes electronically. As treated water passes through system, existing scale is etched away, thus increasing cooling potential. High-capacity, full-flow bag filter works in conjunction with treater. Bag filters offer alternative to bulky "Y" strainers and sand-and-gravel filters and full-flow filtration at reasonable cost. Also reduce downtime, conserve water, and operate cleanly and easily. Sentinel pressure-drop alert system detects pressure drops across filter media as low as 3-5 psi. Ozone and/or ultraviolet used as part of nonchemical water-treatment package when applicable.

PROTEC COOLING TOWERS, INC.

Low-maintenance cooling towers have corrosion-resistant components. Basin, casing, and air intake louvers are made of long-lasting fiberglass-reinforced plastic. Gelcoat protects fiberglass from ultraviolet rays. In most cases, round, bottle-type cooling towers operate at considerably lower horsepower than rectangular towers. Units from 3 to 1000 tons shipped assembled or knocked down.

QUALITY PROCESS CONTROL SYSTEMS

Water and oil mold-temperature controllers, portable chillers, central chillers, recirculating tower systems, and stainless-steel pump tanks.

Mold-temperature controllers utilize horizontally mounted pumps with vertically mounted heaters. Pumps have continual seal flush. Heaters are flanged, low watt-density immersion units. Controls are microprocessor-based. Multizone configuration available. Hot-oil heaters range from 6 kw through 36 kw and have a nonleak seal cooling and flushing circuit.

Portable chillers use hermetic, semi-hermetic, or scroll compressors. Stainless-steel plate and frame and shell-and-tube heat exchangers are used. All have insulated copper pipe, nonferrous reservoir, and stainless-steel cabinets.

Central chillers feature compressors with automatic load compensation. Pump tanks are insulated stainless steel. Solid pump deck for mounting pumps and NEMA-12 control panels are standard.

Tower systems have round fiberglass towers coupled with stainless-steel pump tanks, which are double welded at all seams. Control panels and components are NEMA-12. Fiberglass towers come with a five-year shell warranty.

All pump tanks and reservoirs are stainless steel. Stainless-steel cabinetry is standard on small portable chillers and mold-temperature controllers.

REGLOPLAS AG See Marvel Equipment Corp.

RITE-TEMP MANUFACTURING

Refrigerated water chillers in four designs of 2 to 20 tons. Air- and water-cooled units have standard 40-gal, stainless-steel, closed evaporator tank. Also portable units, indicating gauges, indoor or outdoor installation, and user-friendly controls. Special controls, instrumentation, or electrical options available.

R.J. INDUSTRIES, INC.

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

SCHREIBER ENGINEERING CORP.

Air- and water-cooled chillers from 1/2 to 20 tons have water systems designed for unrestricted circulation and proper turbulence in the heat exchanger. No need for antifreeze. Extra-large, stainless-steel reservoirs; Tecumseh compressors; polyester powder coating for long life; and conventional fittings, parts, and motors for easy replacement.

All units have tilted control panel, cycle on/off as needed, use no hot-gas bypass, and have "contamination-free" stainless-steel or bronze water pumps.

STERLCO DIV., STERLING, INC.

Compact Vision temperature controls with fuzzy logic improve response time with less overshoot and deliver up to 30 gpm at 25 psi. An ABS electrical console removes easily for quick maintenance. NEMA-1 construction for durability.

Vision portable chillers available from 1/2 to 3 hp. SMC050 to SMC150 units utilize hermetically-sealed, reciprocating compressors with air-cooled condensers. SMC200 and SMC300 equipped with scroll compressors and brazed-plate evaporators, air- or water-cooled. All units control within [+ or -]2 [degrees] F using an off-the-shelf, fuzzy logic microprocessor controller. Feature NEMA-1 enclosures and all refrigerant safeties.

Water- and oil-circulating temperature-control systems can be supplied in operator-height vertical cabinets or low-profile compact cabinets. Customized systems available.

The 4300/4400 series of water-circulating temperature controllers provides water-supply temperature to 300 F. Standard unit has 9-kw, low-watt-density, copper-sheathed heater with pumping capacities from 1/2 to 7 1/2 hp. Optional heater sizes up to 48 kw. Units with single, dual, or three zones have common electrical and water-supply connections. Microprocessor or solid-state digital controller. Dual 1000-ohm platinum RTD sensing probes, low-watt-density heaters with copper-sheathed elements for good thermal conductivity, half- and full-heat capability, a specially designed "Sterlseal" pump seal that minimizes downtime and increases flow rates, and high-technology controllers. Optional computer-interface capability (RS232, RS422, RS485, SPI Protocol), special alarms, JIC/NEMA-12 construction, nonferrous plumbing, and special power requirements.

Portable and central chillers from 0.5 to 180 tons in air- and water-cooled versions. Also cooling towers, pumps, pump tanks, and water-filtration equipment.

Air- and water-cooled portable chillers from 0.5- to 30-hp supply chilled water from 0 to 70 F in a variety of flow rates and pressures, using single and dual pumps. PID autotuned microprocessor control accurate to [+ or -]1 [degrees] F. Up to 40-gal insulated reservoir, centrifugal recirculating pumps to 10 hp, nonferrous reservoir and internal piping, semi-hermetic Copeland "discus" compressors (on units of 15 hp and larger), hot-gas bypass, shell-and-tube evaporators, cleanable shell-and-tube condensers on water-cooled models, and fin-and-tube condensers on air-cooled models.

Air- and water-cooled central chilling systems to 300 tons. Cooling towers to 650 tons. Engineering, installation, and start-up assistance.

Also high-temperature heat-transfer systems to 650 F. Heater sizes from 6 to 300 kw with pumping capacities from 10 to 600 gpm. Low-watt-density heaters, the industry's only two-pass heater tank according to the company, heavy-duty positive-displacement circulating pumps, push-button controls, system-status board, and safety components standard. Microprocessor or solid-state digital control. Optional automatic cooling with removable tube bundles from the heat exchanger. Single and dual zones.

Sterlclean descaling system dissolves any scale, rust or lime in temperature-control systems, heat exchangers, molds, dies, or any application where there is scale buildup. (See ad Cover II.)

TECHNE INC.

Circulating bath systems for open and closed applications for above-ambient temperatures to a maximum of 250 C. Five bath capacities from 8 to 48 liters and five temperature-controlled circulators make up the 25 available systems. Each can be used as an open bath to provide maximum working area or as a closed circulating system for external apparatus. Inlet and outlet pipes at the rear of the circulator can be used for external circulation or terminated for circulation only within the bath itself. Although designed primarily for heating applications, the baths are calibrated at temperatures below ambient and can be used at sub-ambient temperatures.

TEMPTEK, INC.

Mold-temperature controllers, portable chillers, pump-tank stations, and cooling-tower cells designed for mechanical simplicity and operator convenience, utilizing ultra-rugged construction and fewer components.

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

Portable chillers and chilling modules available in air- and water-condensed versions. Units from 1 to 30 tons with operating temperatures from 30 to 70 F. Chilling modules from 5 to 40 tons with operating temperatures from 20 to 60 F.

Pump-tank stations utilize minimum floor space while emphasizing vertical dimension for water storage. Standard process connections for pumps, sensors, drains, and water-level controls simplify installation.

Cooling towers in galvanized metal or fiberglass from 10 to 540 tons employ energy-efficient prop fans, generous wet decks, and large water reservoir.

THERMAL CARE

Portable chillers in self-contained air- or water-cooled designs from 1/2 to 40 tons have accessible cabinet design, nonferrous water system, and microprocessor controls with dual-digital displays, five-year warranty, seven positive-action switches, and 19 diagnostic lights.

Air-cooled central chillers include heat-reclaim indoor units or low-ambient outdoor units in capacities to 270 tons.

Water-cooled central chillers in four configurations: 1) TSW economical plantwide systems from 20 to 180 tons with serviceable semi-hermetic or scroll compressors and two or more independent refrigeration circuits for precise control. 2) TCCW energy-efficient design with direct-drive compressor systems, ambient-air-cooled industrial T-frame motors, and capacities from 35 to 170 tons. 3) WN units with open-type, belt-drive, slow-speed compressor for dependability. 4) Small-footprint modular chillers with brazed plate evaporators and condensers, computer control, and scroll compressors.

Fiberglass cooling towers in FC and FT series from 5 to 350 tons for difficult installation conditions. Units have a high-efficiency induced-draft design and strong, lightweight, noncorrosive FRP shell. Nonferrous construction and five-year total tower warranty on FC series towers.

Pump/reservoir assemblies custom engineered in any size and configuration for tower or chiller applications. Have grooved pipe connection system; fiberglass, stainless-steel, or double-welded steel construction; solid pump decks; and premounted, prewired control panels.

Water-treatment systems control scale, corrosion, suspended solids, and microbiological growth with a single panel-mounted unit. Lifetime warranty. Filtration equipment includes sand media filters, centrifugal separators, bag filters, and filter strainers.

Temperature-control units in a complete range of pumping, heating, and cooling configurations for oil and water from 0.5 to 7.5 hp, 3 to 60 kw. Unitized cast construction of twin tank and pump assembly, microprocessor with dual digital displays and five-year warranty, seven positive-action switches, and 15 diagnostic lights. Negative pressure units available.

T.U.C. INC.

Water and hot-oil temperature controllers and portable chillers.

Water units in upright, low-profile, and subcompact configurations. Digital or microprocessor controls. Microprocessor unit has RS232C, RS422, and RS485 capability. Dual-probe sensing, solid-state control, and horizontal pumps with seal flush offer simple operation. Single- and multizone models with optional features.

Hot-oil systems control temperature from 100 to 500 F. Heater capacities from 6 kw and up. Centrifugal pumps incorporating water-cooled seals are standard. Upright and compact models available.

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

VAN STEENBURGH LIQUID CHILLERS

Chil-Trak series reciprocating liquid chillers from 2 to 7.5 tons with remote condensers discharge heat outdoors and/or reclaim heat for use elsewhere. All sizes have Head Start receiver, which matches capacity with load to ensure smooth, consistent operation and low-ambient-temperature start-up. Front-panel access to valves for all sections of system.

WEST COAST PLASTICS EQUIPMENT INC.

Two lines of chillers (Rite-Temp and Schreiber) suited to West Coast hard-water conditions in capacities to 250 tons. Fluid mold-temperature controllers in 3- and 5-kw ratings circulate both water and oil to 302 F in a single unit.

Distributes cooling towers by two builders: Marley's conventional towers and Amcot's all-fiberglass non-rusting towers.