Very Low Pressure Dew Point
The heatless desiccant dryer reaches a pressure dew point down to -40 °C at 7 bar, and lower if required, which provides very dry and reliable compressed air or nitrogen even under demanding operating conditions.
Donaldson Oilfreepac™ HL - OFP
Heatless desiccant dryer for drying and purifying compressed air or nitrogen in demanding industrial applications.
| Pressure Dew Point: down to -40 °C |
| Operating Pressure: 4–16 bar |
| Medium: compressed air / nitrogen |
| Flow rate: up to 1000 m³/h |
| Technology: cold adsorption |
| Pressure Dew Point: down to -40 °C |
| Operating Pressure: 4–16 bar |
| Medium: compressed air / nitrogen |
| Flow rate: up to 1000 m³/h |
| Technology: cold adsorption |
- Desiccant Dryer with Heatless RegenerationThe system includes a heatless desiccant dryer that regenerates with regeneration air and an activated carbon adsorber for removing oil vapors, hydrocarbons and odors.
- Low Pressure Dew PointA pressure dew point down to -40 °C (ISO 8573-1 class 2) or down to -70 °C (class 1) and a residual oil content < 0.003 mg/m³ can be achieved when the system is correctly sized.
- Residual Oil Content IndicatorThe integrated indicator allows the residual oil content to be monitored and the efficiency of the activated carbon adsorber to be checked.
- UltraPleat™ Prefilters and AfterfilterThe system includes high-efficiency prefilters for removing oil and water aerosols and an afterfilter for removing particles at a low pressure drop.
- Electronic Condensate DrainBoth prefilters are equipped with an electronic level-controlled condensate drain with operation monitoring and an alarm function, without compressed air losses.
- Ultraconomy Dew Point Control (Superplus)Dew point monitoring and control enable optimal use of the desiccant, lower energy consumption and full control over the operation of the dryer.
- Electronic ControllerThe controller displays the dryer status, alarms and service messages. The standard version operates on a time cycle, while Superplus includes dew point display and control.
- Remote On/Off ContactAllows remote control of the dryer and connection to the compressor in order to reduce purge air consumption when the compressor is not running.
- Capacity RangeTen dryer sizes with a nominal flow rate up to 1000 m³/h are available to match different application requirements.
- Steel Construction and PipingWelded steel vessels and frame together with a pipe system with press fittings provide a robust and service-friendly design.
- Regeneration ValvesSwitching and regeneration valves with flanged bodies allow quick replacement of wear parts and reduce downtime.
- Differential Pressure IndicatorsEconometer indicators on the filters allow the level of clogging to be monitored and the filter elements to be replaced in time.
| Parameter | OFP 0100 | OFP 0150 | OFP 0175 | OFP 0225 | OFP 0300 | OFP 0375 | OFP 0550 | OFP 0650 | OFP 0850 | OFP 1000 |
|---|---|---|---|---|---|---|---|---|---|---|
| Nominal Volume Flow [m³/h] | 100 | 150 | 175 | 225 | 300 | 375 | 550 | 650 | 850 | 1000 |
| Average Regeneration Air Consumption [m³/h] | 20 | 30 | 35 | 45 | 60 | 75 | 110 | 130 | 170 | 200 |
| Minimum Outlet Volume Flow [m³/h] | 75.4 | 113.1 | 132.0 | 170.0 | 226.2 | 282.8 | 414.7 | 490.1 | 640.9 | 754.0 |
| Initial Differential Pressure [mbar] | 115 | 340 | 305 | 190 | 230 | 370 | 315 | 380 | 385 | 455 |
| Prefilter and Afterfilter | S 0210 | S 0210 | S 0210 | S 0450 | S 0450 | S 0450 | S 0750 | S 0750 | S 1100 | S 1100 |
Benefits
Removal of Oil Vapors and Odors
The built-in activated carbon adsorber efficiently removes oil vapors, hydrocarbons and unpleasant odors. The large quantity of activated carbon provides a high adsorption capacity and a long service life of the filling.
Complete Filtration System
The system includes two prefilters and one afterfilter with UltraPleat™ media that efficiently remove oil and water aerosols as well as solid particles, so the outlet air is suitable for very demanding applications.
Monitoring of Operating Quality
An integrated oil indicator allows the residual oil content to be monitored, while on Superplus versions the Ultraconomy dew point control optimizes the use of the desiccant, monitors drying performance and helps reduce energy consumption.
No Compressed Air Losses
The electronically controlled zero-loss condensate drain with alarm function discharges condensate without compressed air losses in normal operation, which contributes to higher energy efficiency of the system.
Robust Industrial Design
Steel pressure vessels and piping, a pipe system with press fittings and reliable switching and diaphragm valves provide a long service life, high operational reliability and simpler maintenance.
Industrial Manufacturing
Reliable operationReliable drying and purification of compressed air to protect production equipment, pneumatic systems and processes where stable air quality is essential.
Food Industry
oil-freeHighly pure and dry air without oil vapors or odors for applications in contact with food, such as packaging, transport and processing.
Electronics
Maximum purityExtremely dry and clean air for sensitive processes in the electronics industry, where maximum protection against moisture and contamination is required.
Automotive Industry
Stable air qualityReliable compressed air treatment for paint shops, assembly lines and pneumatic systems, where constant air quality and availability are important.
Air treatment
Describe your compressed air system and we will propose the right solution.
Fill in a short form and we will prepare an optimal solution for cooling, drying, filtration, and condensate removal.
Improved air quality
Condensate removal optimization
Complete system solution
Where to find us
DirectionsPod lipami 4 · 1370 Logatec, Slovenija
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