3 Solutions to Protect your Electrical Enclosures From Condensation and Humidity

What is condensation?

Formation of condensation is one of the biggest dangers for electrical enclosures. Condensation is caused by hot, humid air coming into contact with a colder surface than the air dew point.

With Springtime’s typical variable weather conditions, outdoor enclosures are even more exposed to the risk of condensation. Condensation can also occur indoors if the humidity is too high.

When the humidity is high is does not take a large change in temperature to cause condensate to form inside the cabinet.

How to prevent condensation?

The most efficient solution is to combine Filterfans® and Heaters with control devices such as Hygrostats and Thermostats. Fan Heaters are typically used in outdoor applications where ambient temperature can threaten sensitive electronics. Radiant Heaters are often used to reduce humidity and control condensate within the enclosure.

1. Filterfans® + Rainhoods

Filterfans® are the ideal solution for clean, non-hazardous environments with an acceptable ambient (outside the enclosure) temperature range.

Designed for use with standard Filterfans®Pfannenberg’s new Rainhoods (Patent Pending) protect your application from harsh environments like rain, water spray, snow or fluids from being drawn into the enclosure.  This product feature a robust design rated to NEMA TYPE 3R/4/4x and IPx6 when used with Pfannenberg Filterfans®.

Adding a Heater to your Filterfan® + Rainhood solution will ensure a proper humidity control. This combination is the optimum solution for the economical and energy efficient cooling of electrical enclosure components.

2. Fan Heaters

Pfannenberg Heaters prevent condensate build up and therefore protect against corrosion.

Compact fan heater with thermostatFan HeaterMini radiant heaterThe PFH-T Fan Heaters with Thermostat are designed to protect electronics from the effects of low temperatures such as corrosion, freezing or condensation, which can damage critical components within a control enclosure.

The PRH-M Mini Radiant Heaters are ideal for small outdoor enclosures, preventing condensate formation.

The FLH Heaters are ideal for use in larger electrical enclosures.

3. Thermostats / Hygrostats

Industrial ThermostatHygrostat FLZ 600

Pfannenberg’s Hygrostats allow you to effectively control the humidity level inside the enclosure. These devices are used to start the heater or filterfan® if the predetermined humidity threshold is reached.

When combining a Pfannenberg Thermostat with a Filterfan®, the fan can be controlled to turn on and off based on the temperature inside the cabinet.

The benefits to this combined system are:
• Extended fan life.
• Reduced energy consumption.
• Reduced consumables and maintenance.

As a system; Filterfans, Heaters, Thermostats and Hygrostats will ensure that the environment within the enclosure is ideal for the performance and service life of the critical electronics.

 

Pfannenberg’s New Nema Type 3R/4/4X Rainhoods

**NOW AVAILABLE** Pfannenberg’s New NEMA TYPE 3R/4/4x Rainhoods

Designed for use with standard Filterfans®, Pfannenberg’s new Rainhoods protect your application from Harsh environements like rain, water spray, snow or fluids from being drawn into the enclosure.

The New Rainhoods feature a robust design rated to NEMA TYPE 3R/4/4x and IPx6 when used with Pfannenberg Filterfans®. This product come in different sizes and is designed to be compatible with existing Pfannenberg Filterfans® and Exhaust Filters.

Product Features Includes:

Multi-Dam Seal Technology
High compression, closed cell gasket w/multiple seal dams ensuring a proper NEMA Type / IP rating seal to the enclosure.  
Easy Installation
The mounting bracket can easily be installed to the enclosure around the existing cut-out.
Maximized Airflow & Superior Overspray Protection
Direct spray barrier and high air-flow baffle allow for superior protection from overspray entering the cabinet while minimizing airflow loss.
NEMA Type 3R/4/4X / IPx6 Design
This mounting system was designed to ensure a proper NEMA Type / IP rating and protection when used with Pfannenberg Filterfans® and exhaust filters.
Rugged Steel Construction
Industrial version is available in powder coated RAL 7035 light grey galvanized steel, ANSI 61 dark grey, and 304 or 316 stainless steel cover design. Sanitary version is available in a stainless steel, FDA compatible white gasket design. 
Easy Maintenance
Our tool-less design allows for easy removal of the rainhood for maintenance and filter mat replacement. Tamper-proof options also available.

Industry’s FIRST UL Listed Solution!

UL_graphic.jpg

With both our Rainhoods and Filterfans® meeting a UL Listed requirement Pfannenberg is the ONLY manufacturer to offer a complete UL Listed solution to protect any application in harsh and hazardous environments.


Filterfan RainhoodNew Sanitary Rainhood

In addition to our standard painted and stainless steel designs, Pfannenberg also offers a specialty 4X stainless steel rainhood to meet the FDA compatible requirements found in Food & Beverage Manufacturing Facilities.

FDA Compatible White Gasket Design
Our white gasket design is ideal for Rainhoods that are used on enclosures in Food & Beverage applications. This gasket allows for easy detection of any contamination and is free of potentially harmful color additives.
Easy Washdown and Disinfection
With a smooth, clean and seamless design, Pfannenberg Rainhoods allow for easy washdown and disinfection. Direct spray barrier design allows for superior protection from overspray entering the cabinet while minimizing airflow loss.
Easy Maintenance
Easily remove the rainhood for maintenance and filter mat replacement. The gasket will not be  compromised due to it’s ultimate bond with high peel/shear resistance and excellent UV aging. Tool-less design comes standard, tamper-proof option available.
Robust Sealing Against Enclosure
A primary design element found within our rainhoods is the robust sealing of our gasket. Our gasket features; multiple seal dams with a high compression ratio and dense closed cell material. This gasket found in both our regular and sanitary designs.

 

Pfannenberg, the first Global Manufacturer to offer UL Listed Filterfans – Worldwide

TRUST IN THE ORIGINAL

Our invention of the Filterfan® in 1958 was a milestone in the area of industrial thermal management. Today Pfannenberg provides a wide range of different solutions for industrial thermal management and is thus one of the few specialists that can provide the appropriate devices for virtually all industrial thermal management requirements – worldwide.



With the UL Listed Certification Pfannenberg is the only global manufacturer who offers to its customers a certified robust product, dedicated to harsh environmental requirements, without further protection –  worldwide.


Easy Integration

UL Listed Filterfans® meet the demand of Pfannenberg global customers by helping them save time, efforts and money when their application needs to be UL approved.

Pfannenberg’s unique Filterfans® also feature an innovative “Click & Fit” mechanism with a patented 4-corner fastening system enabling safe and quick, tool-free installation allowing the filter medium to be replaced in seconds.

All in all, our Filterfans® 4.0™ contain 11 well-thought out patent protected features.

Recognized Quality

Being UL Listed proves that Pfannenberg Filterfans® follow industry standards and national safety standards. Pfannenberg Filterfans® are made from high quality, durable ABS plastic that stands up to shock, vibration and wide temperature ranges found in the industrial environment.

In addition to UL certification, Pfannenberg Filterfans® carry an out-of-the-box IP55, NEMA Type 12 system of protection. Optional Filterfan® models include an EMC and UV resistant designs.

Performance, Installation & Maintenance – YOUR ADVANTAGE

Pfannenberg Filterfans® offer an enormous degree of service, mounting and maintenance-friendliness due to:

  • Industry Standard integrations: Filterfans® can be seamlessly integrated into industry standard enclosure cut-outs.
  • Reduced Installation Costs: The patented 4-corner fastening system allows a tool-free installation in seconds and guarantees a secure hold.
  • Easy Maintenance: The design cover’s fastening system with grill supporting hinge requires only a single hand to replace the filter mat in seconds.
  • Optimized airflow: Airflow optimized fins and rotor blades guarantee maximum airflow with minimal energy consumption using high performance louvers and more surface area on fluted filter mats.
  • Extended Lifetime: With our fluted filter mats, Filterfans® reach NEMA Type 12 protection. Additionally, the fluted mats extend service life by 300% requiring less frequent replacements.
  • Additional Accessories: Filterfans® can be used with thermostats to reduce energy & maintenance costs. NEMA TYPE 3R/4/4x and IPx6 Rainhoods (see below) are also available in steel and stainless steel for outdoor and wash down applications.

>> Click here for more information about our Filterfan® range


Industry First UL Listed Rainhood Solution

Pfannenberg Rainhoods (Patent Pending) feature a robust design rated to NEMA TYPE 3R/4/4x and IPx6 when used with Pfannenberg Filterfans®.

Options include painted galvanized steel, stainless steel and FDA compliant food and beverage grade versions.

NEW Sanitary Rainhood: In addition to our standard painted and stainless steel designs, Pfannenberg also offers a specialty 4X stainless steel rainhood to meet the FDA compatible requirements found in Food & Beverage Manufacturing Facilities.


With the UL Listed certification, Pfannenberg proves once again that The Original Filterfan is the best choice to guarantee trusted Thermal Management, for all applications, worldwide.

Topics: FilterfansCompany News & Annoucements

Pfannenberg – Global Solutions and Support for OEMS


When it comes down to the final decision on whether or not to purchase new equipment for a plant, the decision tends to fall down to three major concerns:

  1. What preventative yearly/monthly/weekly/daily maintenance is required?
  2. Is it able to withstand the environment?
  3. How much time and money will it save?

For OEMS to be competitve and meet the needs of their end use customers, there are 3 main areas that are looked at when choosing the supporting components for their equipment.

Components that are Built to Last

For more than 60 years, we have been helping guarantee production safety for OEMs and end users throughout the world.  Sensitive control technology needs to be protected from many environmental conditions. With NEMA Type 4/4X, IP 56 protection, our cooling units satisfy the toughest environments.

Support and Accessibility

Pfannenberg innovation has made it one of the largest globally operating manufacturers of thermal management and process cooling equipment today.  Our wide product range includes complete system solutions for machine and enclosure cooling along with visual and audible signaling devicesfor events that require alarm, warning or indication notifications.

Support… when and where it’s needed – In addition to manufacturing facilities location on three continents, Pfannenberg has developed a worldwide network of local subsidiaries and sales/service partners eager to meet your service needs and help you select the correct solution.

If maintenance of your enclosure cooling system is required you can expect immediate assistance from Pfannenberg. Our repair service affords you the fastest possible response – nationally or internationally. We ensure that your cooling system is returned to optimal condition – even if it’s not a Pfannenberg product.  Our on-site service gets you back on-line faster, eliminating the transit time associated with factory repair programs.

Experts in Industry Group Solutions

As a leading thermal management solutions
company, we can develop products quicker than the competition while optimizing the solution for that specific industry group’s requirements. The high performance of our products comes from years of research and design experience. Trust us to be the experts in your industry to provide you  with the proper cooling solution.


Have a question regarding which equipment is best for your application? Ask Us Here.

The Technology of Cooling Part 1: Cooling with Filterfans®


If the installation is in a clean, non-hazardous environment with an acceptable ambient (outside the enclosure) temperature range, a simple forced-air cooling system utilizing outside air is usually adequate. Combined with an air filter, such devices generally meet the heat removal needs of typical electronic equipment and many electrical applications. 


How do I know if a Filterfan® is the right product for my application?

  • If the temperature rise inside the enclosure can be higher than the ambient
  • If multiple configurations are needed. Filterfans® can be located in a number of locations within complex enclosure configurations.

Calculating the required airflow

To properly size a Filterfan® it’s important to understand how static pressure effects the performance of a fan.


Understanding CFM

CMF describes the volume flow rate of compressed air. We can define 3 different CFM:

  • CFM1: Fan Only (unfiltered)
  • CFM2: Filterfan® Assembly (uninstalled)
  • CFM3: Filterfan® Installed on an enclosure with one filtered exhaust assembly
    (Note: Always calculate cooling capacity of Filterfans® with the CFM3 value)


Utilizing Filterfans® for Enclosure Cooling 

  • Always use the Filterfans® to propel the cool ambient air into enclosure.
  • Slight positive pressure builds up inside the cabinet so that only air filtered by the Filterfans® flows into the enclosure.
  • The air propelled into the cabinet displaces the warm air which exits through the exhaust filter.
  • When installing a combination of Filterfans® and exhaust filters, fit the Filterfans® in the lower third of the cabinet and the exhaust filter(s) near the top of the cabinet.

Utilization examples

CFM : Filterfan® + Exhaust Filter CFM : Filterfan® + 2 Exhaust Filters CFM : Filterfan® + intake + Filterfan® Exhaust

 

Part 1 of our Thermal Management Solutions, Pfannenberg’s Filterfans® incorporate modern louvers which enable maximal airflow, hold back dust/flour and water particles, protect the filter medium from damage and can be integrated into the design of the application. Filterfans are an ideal cooling solution when the ambient air is always lower than the temperature required in the electrical enclosure. This assists the natural convection of the air and avoids hot spots withing the enclosure.

Pfannenberg is the inventor of the Filterfan®, with 50 years of experience and continuous development. Trust in the Original


Read the 2nd part of our Thermal Management Tips: Cooling with Closed Loop Air to Air Heat Exchangers

Topics: FilterfansEnclosure CoolingThermal Management

Selecting the Proper Equipment for Food and Beverage Applications


Proper thermal management is key for saving resources and keeping electronics (and equipment) up and running on a consistent basis. It is important to understand the various types of cooling methods available and how the ambient conditions may effect the product chosen.  Choosing the wrong method may lead to a solution that is undersized or oversized, or fails prematurely due to being specified for incompatible ambient conditions.


Selection of the preferred thermal management method, based on various environmental conditions:

Click here to view our thermal management selection guide.


With products that include fans, heaters, packaged air conditioners, air-to-water heat exchangers, packaged process chillers, and signaling devices, Pfannenberg offers a full range of thermal management solutions for the food and beverage industry. Standard options such as stainless steel materials, NEMA 4/4X enclosures, and washdown duty construction allow these time-tested products to be seamlessly incorporated into even the most demanding food and beverage processing applications.


Have a question regarding which equipment is best for your application? Ask Us Here.

Be sure to follow our NEW Food and Beverage LinkedIn Showcase Page!

Topics: Air Water Heat ExchangersFilterfansCooling UnitsThermal ManagementHeatersFood & BeverageChillersAir Air Heat Exchangers

Filterfans® – Essential to Food and Beverage Applications


Pfannenberg’s Filterfans® –  “Trust in the Original”

Proper cooling is essential for temperature regulation for the electronics used in a food and beverage facility.

Pfannenberg’s Filterfans® incorporate modern louvers which enable maximal airflow, hold back dust/flour and water particles, protect the filter medium from damage and can be integrated into the design of the application. Filterfans are an ideal cooling solution when the ambient air is always lower than the temperature required in the electrical enclosure. This assists the natural convection of the air and avoids hot spots within the enclosure.

Pfannenberg is the inventor of the Filterfan®, with 50 years of experience and continuous development. 


Why Choose Pfannenberg’s Filterfans®

  • Reduced Energy Consumption – More air, less power consumption
  • NEMA Type Protection – Closed frame prevents unfiltered air from passing
  • Patented Tool-Less 4 Corner Fastening System – Possible to install in seconds
  • Aesthetically Pleasing Design Using Neutral Colors – Prefect harmony of colors with modern machines and plants
  • Highest System Airflow in Industry – Via optimized louvres
  • 300% Longer Service Time via Patented Fluted Filter Mat – This saves time and money

These time-tested products can be seamlessly incorporated into even the most demanding food and beverage processing or packaging applications.

Topics: FilterfansThermal ManagementNorth AmericaFood & Beverage

How to Choose the Proper Enclosure Cooling Product


Reliable Thermal Management:

Understanding the proper thermal management of your electrical enclosures is critical in keeping your production process up and running. Trouble-free production is only guaranteed if the sensitive climate inside your electrical enclosures is maintained, even the slightest overheating of the electronic component units can result in serious consequences such as production downtime and premature aging of parts. It’s important that you choose the proper enclosure cooling

Choosing the Best Solution for Enclosures and Electronics Cooling:

Before choosing the best cooling solution you need to know your environment. Is the control cabinet placement in an environment where the air is full of dust or oil? Is the equipment to be cooled exposed to the weather, i.e. moisture and sunshine? How large are the designated dimensions of the required cooling units? Once these questions have been clarified completely, you can move on to choosing the best cooling solution for your application.

Common Thermal Management Products:


FilterFans®

  • If the ambient temperature is always lower than the temperature required in the electrical enclosure, then  Filterfans® represent an economical solution for thermal management of electrical enclosures.


Enclosure Air Conditioner

  • If cooling cannot be accomplished by the outside air
  • If the temperature required inside the electrical cabinet should be equal to or lower than the ambient temperature
  • If the ambient air is strongly contaminated with oil or conductive dusts
  • When higher ingress protection is required (Type rating)


Air to Water Heat Exchanger

  • If a chilled water supply is available
  • If aggressive ambient air restricts the use of conventional cooling units
  • If a very high IP class is required (up to IP 65)
  • If a maintenance-free cooling unit  is required
  • If energy efficiency is considered at a plant level concern

Need Help choosing the correct cooling solution?

If you need help choosing the proper cooling product for your application check out our Pfannenberg Sizing Software, it’s a free tool for you to use.

Topics: Air Water Heat ExchangersFilterfansEnclosure CoolingCooling Units