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Product Data

  Part Number
Height (inch) 31
Width (inch) 21.75
Depth (inch) 19
Weight(lbs) 68
Voltage 220
Phase 1
Frequency(Hz) 60
Power(kW) 1.8
Current(A) 8.0
Process Airflow(cfm) 197
Regen Airflow(cfm) 119
Process Duct Size (inch) 5.0
Regen Duct Size (inch) 4.0
Noise Level(dba) 67
Typical Extraction(ppd) 71.5
Min Operating Temp (°F) -4
Max OperatingTemp (°F) 104
  Part Number
On/Off Switch Y
Ammeter Y
Integral Electronic Humidistat Y
Manual/Auto Modes Y
Hours Run Meter Y
High Temperature Cut Outs Y
Fitted Mains Plug Y
Fan Speeds 1
High Capacity PTC Heater Y
Inlet Air Filters Y
Shock Resistant Tyres Y
Dual Air Inlet Design Y
Free Standing Y
Epoxy Powder Coated Chassis Y
Part Number Description Qty
10640RG-US Dehumidifier 1
TPC438 Manual 1
Part Number Description
3110454 102mm Dia Flexiable Ducting
3110455 130mm Dia Flexiable Ducting
1064004 Process Air Duct Attachement (130mm)
1064005 Regen Air Duct Attachement (100mm)
  Part Number
Wiring Diagram
Wiring Schematic
Spare Parts List


Dehumidifiers are required wherever there is a need to lower the humidity level to prevent corrosion, mold growth and condensation or maintain a low humidity condition during manufacture, packaging or storing of hygroscopic products.

Methods Of Dehumidification

Dehumidification is possible using two possible principles, Condensation with refrigeration style dehumidifiers and Adsorption with desiccant dehumidifiers. Desiccant dehumidifiers perform exceptionally well when used in cooler climates, or when a low dew-point, deep drying or low humidity levels are required. Since desiccant dehumidifiers do not produce water, they will work effectively down to sub zero temperatures. Their operation is simplistic yet extremely effective and reliable. Air (Process Air) is drawn into the dehumidifier, where is passes over a wheel impregnated with Silica Gel. As the air passes over this wheel, any moisture present in the air is absorbed into the Silica Gel wheel before leaving the dehumidifier as warm dry air. The Silica Gel wheel is continually, slowly rotating, typically at three revolutions per hour. As the wheel rotates, a small portion passes through the regeneration segment. During this phase a second air stream (Regeneration Air) is heated to a high temperature before passing over the wheel. Any moisture present in the wheel is released into this air stream; this hot wet air is then exhausted outside the area being dried.

Key Design Features

Stainless Steel Construction, Auto / Manual Mode Selection, Electronic Controls, High Capacity PTC Heater, Integral Electronic Humidistat, Low Temperature Operation, Hours Run Meter

Why Choose EIPL

EIPL is Europe’s leading manufacturer of dehumidifiers and is a name you can rely on. No matter how extreme the conditions EIPL’s efficiency copes comfortably even at the coldest temperatures.

Rugged Construction & Years Of Service

Over thirty seven years of development experience means you can rely on the proven track record of the EIP range of dehumidifiers. Every dehumidifier is designed for efficiency and ruggedness, and built to last. The popularity of EIP Ltd’s dehumidifiers with the plant hire trade speaks for their reliability, portability and outstanding durability.


The DD400-P is the largest portable desiccant dehumidifier within the EIPL range. It’s compact, rugged, lightweight design facilitates easy transportation by one person and is easily accommodated within space restricted areas. The unit incorporates a Electronic Humidity Controller, and PTC Heater, ensuring maximum drying is immediately reached and constantly maintained while the unit is running. Running time can be recorded via the hours run meter located on the control panel, The shock absorbing tyres allow the unit to be transported over rough ground The DD400-P is manufacturd from Epoxy Powdered Coated Steel, making the DD400-P and robust desiccant dehumidifier suitabe for thr most severe of applications. The spigot connectors allow quick and easy installation and provides the versatility of connecting fleciable ducting. All models incorporate a high efficiency patented PPS Rotor. This design incorporates an 82% active Silica Gel to ensure optimum performance over the equipments wide operating range of environments. All desiccant rotors supplied by EIPL are washable, and designed for high performance / long life.