Pfannenberg’s Chillers Keep Chocolate Tasting Great

Pfannenberg’s Chillers Keep Chocolate Tasting Great

Chocolate plays a major role in many of our holidays as Valentine’s Day or Easter! Whether it’s a box of chocolates or Easter eggs filled with various sweets – there is an extensive process that goes into making these enjoyable treats!

The manufacturing process of chocolate is a delicate procedure. Temperature control of the equipment and the product is important to producing a flavorful and scrumptious chocolate. All processes related to making chocolates are temperature regulated.

A major aspect of chocolate manufacturing is the conching step. Pfannenbergs’ packaged chillers are an ideal solution for the temperature regulation in this process.  Conching is the step in which the chocolate receives its flavor and smooth characteristics! At this stage, the addition of other ingredients is introduced as metal mixers/rollers mix the ingredients together.  This step generates its own heat, which is integral to keep the flavor and the proper consistency of the liquid state.  This chocolate has to be kept at average of 175°F throughout the process (temperature will vary depending on the type of chocolate).  The length of this process will vary depending on the flavor of chocolate.  Typically the average time spent conching is between 4-6 hours; gourmet chocolate brands will spend 30+ hours at this stage.

Following conching, the next step in the process is tempering.Tempering gives chocolate a distinctive shine and color; adding additional flavor.  It is crucial to have strict temperature control.  For tempering, a cooling tunnel is used to take the ambient air; cooling the air to approximately 50°F.  The air then needs to be heated to ambient air temperature.  Pfannenberg’s process chillers have been used successfully in the production of candy and chocolate.  At this stage it is crucial once again for strict temperature control.  If the temperature of chocolate begins to harden and then is heated to become a liquid state – the chocolate is ruined. For chocolate to receive its distinct flavor, look, and texture – the temperature of the chocolate and the air it is produced in is critical.

Next time you eat a piece of chocolate, be sure to appreciate the process it takes to produce such a sweet indulgence!

>> Click here to discover our complete range of chillers!

About Pfannenbrg…

By keeping electronics in enclosures from overheating, Pfannenberg provides an invaluable service to companies, keeping their machinery and processes consistently operating.  By developing and producing products which are designed to save energy and other resources, Pfannenberg operates by their business philosophy – Protecting man, machine and the environment.

Topics: Cooling UnitsNorth AmericaPackaged ChillersFood & BeverageChillers

PATROL & PYRA Industrial alarms: Technically advanced devices which exceeds requirements

With innovative design and robust construction to fulfill the most demanding requirements, Pfannenberg PATROL & PYRA® Visual and Audible Signaling Devices are the best choice for industrial safety.


Pfannenberg PATROL & PYRA® Industrial alarms meet the requirements of IP rating protection as well as having an impact-proof housing. In addition, the base connection terminals, undetachable seals and quick locking elements greatly facilitate easy mounting.



Unique enclosure fasteners
• 3/8-turn fasteners for quick and easy assembly. (1)
• Captive fasteners: installation and assembly are simplified and screws cannot get lost.
• Optional tamper-proof fastener plugs protect the unit from alterations.
• Fastener design shows whether “closed” (x) or “open” (+).
IP 66 enclosure rating
• Gasket is permanently sealed to the enclosure cover. (2)
• Enclosure fasteners are outside of the sealing area to ensure that the IP rating is not compromised by fastener holes. (1)
Error-free electrical connections
• Screw terminal strip is located in the base-box portion of the enclosure allowing easy, one person installation – a third hand is not needed. (3)
• Acoustic driver electrically connected to the base-box through an integrated mechanical key way and multi-pin electrical connector to ensure proper assembly every time. (4) (5)
• Knockouts are provided on multiple sides to support a variety of wiring and interconnection scenarios.
Numerous mounting options
• Integrated external flange is stronger than mounting lugs. (6)
• An assortment of internal pilot marks offer worldwide compatibility with a variety of standard electrical work boxes. (7)
• Entire device can be wall mounted or panel mounted optional with finger guard. (8)
• Acoustic module by itself can be flush mounted to an enclosure panel. (9)
Vast selection of integrated tones
• Choose from 80 different tones by a DIP switch setting. (10)
• Multiple tone stages permit the same device to emit up to four different alarms based on circumstance + internal volume control.
Improved acoustic driver
• Sound capsule technology delivers more low frequency punch than piezoelectric elements for superior sound penetration through walls, doors, and other obstructions.
Extreme environment compatibility
• NEMA type 4/4X and IP 66 rating withstands exposure to dust, liquids, water spray, and corrosives.
• –40 to +55 °C temperature range.
• High strength housing is a blend of ABS and poly carbonate plastic that is flame retardant and UV stabilized.
Integrated xenon flashing light
• Xenon flashing light is part of the original design inception, rather than a bolted on afterthought. As such, the light is more visible. Additionally, the light’s intensity is properly sized to match the coverage area of the associated sounder. 5, 10, and 15 Joule flash energies are available. (11)
Xenon flashing light connections made from single terminal strip
• Pre-wired light connections are made at the terminal strip that is also the electrical connection point for the sounder. Since all connections are made from one common connection point, installation is quicker and easier. (12)
Choice of alarm action – combined or separate
• The light can either be activated in conjunction with the sounder or separately from it. Separate operation is often desired to silence the sounder after a certain elapsed time while the light continues to flash. (13)
Life span exceeds 8,000,000 flashes
• The superior technology behind Pfannenberg’s flashing lights permit an unrivaled life span of 8,000,000 flashes while retaining greater than 70 % light emission.
Worldwide certifications for universal acceptance
• UL, cUL, CE, VdS, GL, EN 54-3.



Quick, easy, and safe installation. Saves time and reduces costs. Potential errors are eliminated and incorrect assembly is not possible.










Pfannenberg industrial alarms with visual and audible notifications come with a standard 10-Year Warranty, guaranteed in protecting man, machine, and the environment.

Click here to learn more about Signaling Technology and Solutions!

Pfannenberg’s design excellence for its Signaling Solutions is internationally recognized and has been awarded the prestigious Red Dot Award in 2013 for PATROL and in 2015 for PYRA-MA.

Still not convinced? Click here to Watch our Signaling “Crash Test” videos!

Pfannenberg’s Custom Chillers Deliver Liquid Cooling for Chemical Synthesis Reactor

Pfannenberg fits chiller into confined space within a packaged Ferrator® targeted for water and wastewater treatment in third world countries.

In their quest to develop an affordable Ferrate synthesis system, Ferrate Treatment Technologies, LLC of Orlando turned to Pfannenberg for help with developing a liquid cooling solution for a small, cabinet based system. While already using Pfannenberg chillers for larger, trailer-based Ferrate synthesis systems, standard packaged chillers were capable of integrating seamlessly within the concept of the self-contained cabinet-based Ferrator system.

The “Packaged Ferrator®”  overcomes the obstacles and high cost of using Ferrate, a highly potent oxidizing disinfectant for water and wastewater treatment. The portable Ferrate sythesis system is a game changer for delivering effective treatment for remote locations in underdeveloped nations.

The Treatment or “Cleansing” of Water Takes on Two Primary Requirements:

  • Eliminating contamination within acquired water prior to using or drinking (potable water)
  • Eliminating contamination within used water prior to its release back to the environment (waste water).

For both requirements, an element of cleansing involves disinfection which can be accomplished by several methods intended to kill, remove, or oxidize the contamination. Techniques include mechanical separation such as filtering and reverse osmosis; exposure to ultraviolet light and radiation; and the addition of chemicals such as chlorine or ozone, and now Ferrate. Each technique has its own advantages, disadvantages, effective cost ratio, and ability to scale up in order to treat the affected volume of water.

Oxidation is a process which causes chemical decomposition as well as breakdown of both organic and non-organic substances and is vital for the removal of contamination from water. As a chemical additive, Ferrate possesses extraordinary oxidation capabilities, however, it has historically been quite expensive to manufacture, which has limited its use primarily to laboratory research applications.

Luke Daly, CEO of Ferrate Treatment Technologies, LLC with the packaged Ferrator system

Attempts to produce economical and commercially viable quantities of Ferrate had seen limited success until Ferrate Treatment Technologies, LLC of Orlando (FTT) changed the game by creating a streamlined synthesis process and point-of-use production device. By eliminating storage, handling, and transportation costs associated with a pre-packaged product, FTT has cut Ferrate deployment costs by more than 85%.

The breakthrough device is called a Ferrator, initially available as a trailer or skid mounted system with various capacities targeted for water treatment applications in rural areas. The Ferrator is suitable for a variety of applications including municipal wastewater, industrial wastewater, drinking water, ship ballast water, and environmental water restoration.

Ferrate is highly effective for oxidation, disinfection, coagulation, de-watering, and deodorizing. Ferrate treatment removes phosphates and heavy metals; kills spores, bacteria, viruses and protozoa; removes colors and odors; and its by products are nontoxic.

Composition of the Ferrator

The Ferrator synthesizes Ferrate on-site from three raw ingredients: iron, bleach, and caustic, which are pumped to a homogenizer and reaction chamber. The final product is a liquid which is stored in a tank. Both the reaction and storage areas require cooling, which is provided by Pfannenberg chillers.

When FTT encountered problems with units from another manufacturer they contacted Pfannenberg to provide EB 150 chillers for skid-based systems.

Due to their successful experience with Pfannenberg chillers for system based electrical enclosure cooling, FTT turned to Pfannenberg once again for assistance with a project that required a chiller to fit in a smaller scale Ferrator system into an enclosure. Initially, a CC 6301 packaged chiller was used successfully; however, new design criteria required further miniaturization and this standard packaged chiller would no longer fit. The Pfannenberg engineering team went to work on designing, building, and delivering and open frame unit based on the CC 6301 that could fit within the confines of the small Ferrator enclosure.

” Without Pfannenberg’s cooperation, full support and timely expertise, FTT could never have achieved this historic build for a major philanthropic foundation that is committed to improving the lives of impoverished people in developing countries.” -Luke Daly, CEO (Ferrate Treatment Technologies, LLC)

The small scale Ferrator is targeted for use in third world areas for the treatment of human wastewater and drinking water. Here, the efficiency of the self-contained system will permit water purification in remote areas in which there are no sewer systems, water distribution systems, or central water treatment facilities. The small size of the Ferrator permits it to be readily transported to such remote areas and even be used as a portable device for use at multiple locations. The goal is not only to reduce the adverse effects of discharging untreated wastewater to the environment, but also improve human health by reducing contamination in water available for drinking.

Click here to download the Case study in PDF