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Product Data

  Part Number
  10520GR-US 10521GR-US
  DD900 DD900
Height (inch) 48 48
Width (inch) 28 28
Depth (inch) 23 23
Weight(lbs) 198 198
Voltage 220 460
Phase 3 3
Frequency(Hz) 60 60
Power(kW) 9.8 9.8
Current(A) 26 13
Process Airflow(cfm) 530 530
Regen Airflow(cfm) 147 147
Process Duct Size (inch) 5.0 5.0
Regen Duct Size (inch) 4.0 4.0
Noise Level(dba) 67 67
Typical Extraction(ppd) 364 364
Min Operating Temp (°F) -4 -4
Max OperatingTemp (°F) 104 104
  Part Number
  10520GR-US 10521GR-US
  DD900 DD900
On/Off Switch Y Y
Ammeter Y Y
Electronic Controls Y Y
Manual/Auto Modes Y Y
Remote Humidistat Facility Y Y
Hours Run Meter Y Y
Fitted Mains Plug Y Y
Fan Speeds V V
High Capacity PTC Heater Y Y
Inlet Air Filters Y Y
Temperature Controller Y Y
Dual Air Inlet Design Y Y
Free Standing Y Y
Stainless Steel Construnction Y Y
High Temperature Cut Outs Y Y
Part Number Description Qty
10520GR-US Dehumidifier 1
TPC387 Manual 1
-------- ------------------ ----
10521GR-US Dehumidifier 1
TPC388 Manual 1
Part Number Description
3035157 Mechanical Humidistat - Internal Sensor
3035160 Electronic Humidistat - Internal Sensor
3035162 Electronic Humidistat - External Sensor
  Part Number
  10520GR-US 10521GR-US
DD900 DD900
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 Heater, Remote Humidistat Facility, Low Temperature Operation, Ammeter

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 DD900 desiccant dehumidifier has a compact, rugged, lightweight design that facilitates easy transportation by one person and is easily accommodated within space restricted areas. The unit incorporates a resistive Heater ensuring maximum drying is immediately reached and constantly maintained while the unit is running. In addition to the hours run meter, which shows the units running time, an ammeter is also incorporated in order to monitor the units drying effectiveness. Manual / Automatic control is a standard feature within the DD range of desiccant dehumidifiers, and a remote humidistat can quickly and easily be connected for automatic operation and control. The EIP range of DD desiccant dehumidifiers are all manufactured from a high grade stainless steel, ensuring a rust free product when used in the most severe of applications. The spigot connectors allow quick and easy installation. 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.