Atlas Copco CD 25+ Instruction Book

Heatless adsorption compressed air dryers, basic control and purge control version

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Instruction book (66 pages)

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Atlas Copco

Heatless adsorption compressed air dryers

CD 25+, CD 30+, CD 35+, CD 50+, CD 60+, CD 70+, CD 80+, CD 100+, CD

145+

Basic control and purge control version

Instruction book

Table of Contents

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Page 1 Atlas Copco Heatless adsorption compressed air dryers CD 25+, CD 30+, CD 35+, CD 50+, CD 60+, CD 70+, CD 80+, CD 100+, CD 145+ Basic control and purge control version Instruction book...
Page 3 Atlas Copco Heatless adsorption compressed air dryers CD 25+, CD 30+, CD 35+, CD 50+, CD 60+, CD 70+, CD 80+, CD 100+, CD 145+ Basic control and purge control version From following serial No. onwards: API 089 000 Instruction book...
Page 4: Table Of Contents
Instruction book Table of contents Safety precautions......................4 ...........................4 AFETY ICONS ......................4 AFETY PRECAUTIONS GENERAL ...................5 AFETY PRECAUTIONS DURING INSTALLATION ....................6 AFETY PRECAUTIONS DURING OPERATION ................7 AFETY PRECAUTIONS DURING MAINTENANCE OR REPAIR General description......................9 ........................9 ENERAL DESCRIPTION .............................10 PERATION Electric diagram......................15 Installation........................17 ........................17 IMENSION DRAWINGS...
Page 5 Instruction book ......................35 IMITATIONS FOR OPERATION ........................35 ECHNICAL SPECIFICATIONS Instructions for use......................37 Guidelines for inspection.....................38 Pressure equipment directives...................39 Declaration of conformity....................40 2920 7092 40...
Page 6: Safety Precautions
Instruction book Safety precautions Safety icons Explanation Danger for life Warning Important note Safety precautions, general General precautions All responsibility for any damage or injury resulting from neglecting these precautions, or non-observance of the normal caution and care required for installation, operation, maintenance and repair, even if not expressly stated, will be disclaimed by the manufacturer.
Page 7: Safety Precautions During Installation
Instruction book Safety precautions during installation Precautions during installation 1. The dryer must only be lifted using suitable equipment and in accordance with the applicable safety regulations. Loose or pivoting parts must be securely fastened before lifting. It is strictly forbidden to dwell or stay in the risk zone under a lifted load.
Page 8: Safety Precautions During Operation
Instruction book Also consult following safety precautions: Safety precautions during operation Safety precautions during maintenance or repair. These precautions apply to machinery processing or consuming air or inert gas. Processing of any other gas requires additional safety precautions typical to the application which are not included herein.
Page 9: Safety Precautions During Maintenance Or Repair
Instruction book Also consult following safety precautions: Safety precautions during installation Safety precautions during maintenance or repair. These precautions apply to machinery processing or consuming air or inert gas. Processing of any other gas requires additional safety precautions typical to the application which are not included herein.
Page 10 Instruction book • Always wear special gloves. In case of refrigerant contact with the skin, rinse the skin with water. If liquid refrigerant contacts the skin through clothing, never tear off or remove the latter; flush abundantly with fresh water over the clothing until all refrigerant is flushed away; then seek medical first aid.
Page 11: General Description
Instruction book General description General description Introduction The air dryers described in this book are heatless adsorption dryers, built to remove moisture from compressed air for industrial purposes. The standard version is intended to reach a pressure dew point of -40 ˚C (-40 ˚F). There is also a version available for a pressure dew point of -70˚C (-94 ˚F).
Page 12: Reference Description
Instruction book Reference Description Reference Description Tower A Solenoid valve Tower B Control cubicle Air inlet Silencers Air outlet Operation General The construction of the air dryer is simple, reliable and easy to service. A dryer has basically two towers, containing the adsorption material or desiccant.
Page 13 Instruction book Flow diagram CD 25+ up to CD 50+ Reference Designation Reference Designation Air inlet Air outlet Inlet selector valve Left solenoid valve Left desiccant tower Right solenoid valve Right desiccant tower Silencer Purge nozzle Silencer Outlet selector valve Pressure gauge Operation principle basic control version The operation cycle of the dryer is repetitive and is controlled by a factory-set timer.
Page 14: Flow Diagrams
Instruction book However, in case the input of remote control connector X3 (old denomination: P4 - freeze contact, see section Electric diagram) opens (by the freeze contact), the dryer will "freeze" the drying cycle: purge air flow stops, both solenoid valves are closed. When the contact, connected to connector X3 closes, the dryer will switch towers and will continue normal operation.
Page 15 Instruction book Flow diagram CD 145+ Reference Designation Reference Designation Air inlet Outlet selector valve Connecting tube Air outlet Inlet selector valve Left solenoid valve Left desiccant tower Right solenoid valve Right desiccant tower Left silencer Purge nozzle Right silencer Pressure gauge 2920 7092 40...
Page 16: Control Panel
Instruction book Control panel Control panel with flow diagram On/Off switch LED <Service warning> LED <Power On> LED <Service alarm> LED <In Operation> Timer countdown (Indication of PDP in option) LED < Left tower drying> Air Inlet LED <Left tower regenerating> Air Outlet LED <Right tower drying>...
Page 17: Electric Diagram
Instruction book Electric diagram Service diagram (typical) Reference Explanation Maximum fuses with regard to circuit protection. Cable section may impose fuses of smaller value Supply settings for X9 Connection for remote control (X3): to NO contact of compressor 2920 7092 40...
Page 18 Instruction book Reference Explanation Supply connection for 115 V and 230 V Time setting solenoid valves Connection PDP sensor Reference Designation Reference Designation Controller card LED/Display card Pressure Dew Point sensor (optional) X9 Supply connections Solenoid relay, left tower Solenoid relay, right tower Y1-(Y3)-(Y5) Solenoid valve(s) left tower Y2-(Y4)-(Y6) Solenoid valve(s) right tower...
Page 19: Installation
Instruction book Installation Dimension drawings CD 25+ and CD 30+ 2920 7092 40...
Page 20 Instruction book CD 35+ 2920 7092 40...
Page 21 Instruction book CD 50+ CD 60+ 2920 7092 40...
Page 22 Instruction book CD 70+ 2920 7092 40...
Page 23 Instruction book CD 80+ and CD 100+ 2920 7092 40...
Page 24: Installation Proposal
Instruction book CD 145+ Installation proposal Piping Make sure that all pipes, filters, valves, etc. are clean and that they are installed correctly with or without bypass system. Make sure that the piping is installed stress-free. For more information concerning air nets, cooling systems etc.
Page 25 Instruction book Installation without use of the X3 connection with the compressor COMP Compressor Air receiver Dryer External inlet valve To cut off the air supply towards the dryer External Outlet Valve To cut off the air supply towards the air consumer Bypass valves (not shown on the drawings) Together with the external inlet valve and the external outlet valve, the bypass valves allow the dryer and the filters to be serviced while non-dried air flows through the...
Page 26: General Recommendations
Instruction book Filter with active carbon, capable of absorbing odour (not shown on the drawings). To be installed downstream of the DDp filter if desired. Positioning in case X3 is used If the X3 connection is used, the correct installation sequence is compressor - dryer - air receiver.
Page 27 Never overload the dryer as this will damage the desiccant. It may be recommended to install the air dryer upstream of the air receiver to prevent overload (e.g. after extending the dry air circuit). Consult Atlas Copco if in doubt. 2920 7092 40...
Page 28: Electrical Connections
Instruction book Electrical connections General The electrical wiring must comply with the local regulations. The air dryer must be earthed and protected by fuses against short-circuiting. Consult the electric diagram delivered with the dryer. Before switching on the main power supply, check the voltage requirements in the technical specifications or on the dryer’s data plate.
Page 29: Can-Bus Connection
Instruction book • For 24 V AC: connect the supply cable to terminals 2 and 3 (only applicable to timer card 1900 0713 07 (cubicle 1900 5002 01)): • X3 (freeze contact - P4) If you want to use the feature to “freeze” the regeneration cycle when the compressor runs unloaded, connect pin 1 and 2 of connector X3 with the potential free contact of the compressor (contact closed = freeze).
Page 30 Instruction book Label Description 13.5 V out / 50 mA max 4-20 mA input (40 mA max) Ground • Output alarm relay X11 These terminals are connected to a relay that switches at the same time as the alarm LED. Pin designations: Label Description...
Page 31 Instruction book Dip switch number Function 1,2,3 (reserved) Normally Off used for diagnostic purposes 4,5,6,7,8 Binary address selector (valid values= 1 to 31) bit 4, bit 3, bit 2, bit 1, bit 0) On = 1, Off = 0 Example of address selection: For CAN Bus node address 1, the dip switch configuration is: Before switching on the main power supply, check the voltage requirements in the technical specifications or on the dryer’s data plate.
Page 32: Operating Instructions
Instruction book Operating instructions In your own safety interest, always observe all relevant safety instructions. Initial start-up To start up the dryer for the first time or after a long period of standstill, proceed as follows: 1. If installed, open the bypass valves of the dryer. 2.
Page 33: During Operation
Instruction book Close the external inlet valve in case the compressor needs to be restarted. The air speed in the start-up phase of the compressor may damage the desiccant. During operation At regular intervals, check the status of the LED’s on the control panel. If the warning/alarm LED is alight, consult the section Trouble shooting.
Page 34: Maintenance
• Disconnect all pressure sources and vent the internal pressure of the system before dismantling any pressurized component. • Use genuine Atlas Copco spare parts only. Consult the Spare Parts List for part numbers. For preventive maintenance, dedicated Service kits are available.
Page 35: Resetting The Service Counter
Instruction book Resetting the service counter Timer card resetting procedure To reset the timer card, continue as follows: • Close off the dryer as described in the stopping procedure, see section Operating instructions. • Switch off the dryer by putting switch S1 to ‘Off’ position. LED (2, Dryer operating) will extinguish. Perform the service plan as scheduled.
Page 36: Problem Solving
Dismantle the bottom, remove the nipple off. and detach the shuttle. LED Service warning/ Both LED’s are timer-controlled and Contact Atlas Copco for maintenance. Service alarm is alight. will light up after a certain time Reset the timer after maintenance. (orange LED (warning) after 7750 hours, red LED (alarm) after 8000 hours).
Page 37: Technical Data
Instruction book Technical data Reference conditions Compressed air effective inlet pressure Compressed air effective inlet pressure 101.5 Compressed air inlet temperature ˚C Compressed air inlet temperature ˚F Relative humidity of the air at inlet Pressure dew point (standard version) ˚C Pressure dew point (standard version) ˚F Pressure dew point (optional version)
Page 38 Instruction book CD 25+ CD 30+ CD 35+ CD 50+ CD 60+ CD 70+ CD 80+ CD 100+ 145+ Regeneration air consumption average at max. flow Total amount of 16.4 16.4 30.6 32.8 61.2 61.2 92.4 desiccant Total amount of 36.1 36.1 52.9...
Page 39: Instructions For Use
Instruction book Instructions for use Instructions The dryer can contain pressurised air. This can be potentially dangerous if the equipment is misused. No alterations must be made to this vessel by welding, drilling or other mechanical methods without the written permission of the manufacturer. The design pressure and temperature of this pressure bearing part must be clearly indicated on the data label.
Page 40: Guidelines For Inspection
The Declaration of Conformity / Declaration by the Manufacturer is part of the documentation that is supplied with this air dryer. Local legal requirements and/or use outside the limits and/or conditions as specified by Atlas Copco may require other inspection periods as mentioned below.
Page 41: Pressure Equipment Directives
Instruction book Pressure equipment directives Components subject to 97/23/EC Pressure Equipment Directive The drying towers, consisting of extruded profiles, are the only pressure bearing parts of category I. The category according to 97/23/EC of the pressure assembly, as well as the volume, is indicated in Table A (see below).
Page 42: Declaration Of Conformity
Instruction book Declaration of conformity Typical example of a Declaration of Conformity document (1): Contact address: Atlas Copco Airpower n.v. P.O. Box 100 B-2610 Wilrijk (Antwerp) Belgium 2920 7092 40...
Page 44 Atlas Copco's pursuit of innovation never ceases, driven by our need for reliability and efficiency. Always working with you, we are committed to providing you the customized quality air solution that is the driving force behind your business.

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