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Table of Contents
Related Manuals for Pneumatech AD 750
Summary of Contents for Pneumatech AD 750
- Page 1 PNEUMATECH AD 750, AD 1000, AD 1250 Instruction book...
- Page 3 PNEUMATECH AD 750, AD 1000, AD 1250 Instruction book Original instructions Copyright notice Any unauthorized use or copying of the contents or any part thereof is prohibited. This applies in particular to trademarks, model denominations, part numbers and drawings. This instruction book is valid for CE as well as non-CE labelled machines. It meets the requirements for instructions specified by the applicable European directives as identified in the Declaration of Conformity.
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Page 4: Table Of Contents
Instruction book Table of contents Safety precautions ......................6 ..........................6 AFETY ICONS ....................6 ENERAL SAFETY PRECAUTIONS ................. 7 AFETY PRECAUTIONS DURING INSTALLATION ..................8 AFETY PRECAUTIONS DURING OPERATION ..............9 AFETY PRECAUTIONS DURING MAINTENANCE OR REPAIR General description ....................... 10 .......................... - Page 5 Instruction book ...................... 35 AINTENANCE INSTRUCTIONS ....................... 36 ISPOSAL OF USED MATERIAL Settings .......................... 37 ........................37 EVICE SETTINGS Problem solving ......................38 ........................38 ROBLEM SOLVING Technical data ....................... 41 ................... 41 EFERENCE CONDITIONS AND LIMITATIONS .......................... 42 IR DRYER DATA 9828 0931 61...
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Page 6: Safety Precautions
Instruction book 1 Safety precautions 1.1 Safety icons Explanation Danger to life Warning Important note 1.2 General safety precautions 1. The operator must employ safe working practices and observe all related work safety requirements and regulations. 2. If any of the following statements does not comply with the applicable legislation, the stricter of the two shall apply. -
Page 7: Safety Precautions During Installation
Instruction book 9. If compressed air is used in the food industry and more specifically for direct food contact, Pneumatech recommends, for optimal safety, the use of certified Class 0 compressors in combination with appropriate filtration depending on the application. Please contact your Pneumatech Customer Center for advice on specific filtration. -
Page 8: Safety Precautions During Operation
Instruction book 1.4 Safety precautions during operation 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 9: Safety Precautions During Maintenance Or Repair
Instruction book 1.5 Safety precautions during maintenance or repair All responsibility for any damage or injury resulting from neglecting these precautions, or non observance of the normal caution a nd care required for installation, operation, maintenance and repair, even if not expressly stated, will be disclaimed by the manufacturer. -
Page 10: General Description
2 General description 2.1 Introduction General view AD 750 up to AD 1250 Introduction The AD air dryers remove moisture from compressed air by cooling the air near to the freezing point. This causes water to condense. The condensate is automatically drained. The air is warmed up before leaving the dryer. - Page 11 Instruction book Safety devices Safety devices Reference Name Fan protection grid Grounding Safety pressure switch 9828 0931 61...
- Page 12 Instruction book Danger Zones Risks present on the whole machine. Refer to images added on the next page for the location of danger zone. Danger Zones Reference Danger signal Description of danger signal Dangerous electric voltage Air not fit for breathing High pressure Fan rotating (not shown in image) Hot parts...
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Page 13: Air System
Instruction book 2.2 Air system Air flow diagram Text on figure: Air inlet Air outlet Condensate drain Reference Name Refrigerant compressor Condenser Motor and fan Evaporator Condensate separator Impurity trap Expansion capillary tube Refrigerant filter Hot gas by-pass valve Air/air heat exchanger Digital controller Fan control switch High pressure shut-down switch... -
Page 14: Refrigeration System
Instruction book The cold, dried air flows through heat exchanger (10) where it is warmed up by the incoming air to approx. 10˚C (18˚F) below the incoming air temperature. Condensation in the air net cannot occur unless the air is cooled below the pressure dewpoint indicated by the digital controller (11). -
Page 15: Automatic Regulation System
Instruction book Description Compressor (1) delivers hot, high-pressure refrigerant gas which flows through condenser (2) where most of the refrigerant condenses. The liquid flows through liquid refrigerant dryer/filter (8) to capillary tube (7). The refrigerant leaves the capillary tube at evaporating pressure. The refrigerant enters evaporator (4) where it withdraws heat from the compressed air by further evaporation at constant pressure. -
Page 16: Electrical System
Instruction book Description The condenser pressure must be kept constant to obtain stable operation. Fan control switch (12) therefore stops and starts the cooling fan (3). If, under partial or no load, the evaporator pressure drops below a certain level, the hot gas by- pass valve (9) opens and hot, high-pressure gas is fed to the evaporator circuit to prevent the evaporator pressure from dropping any further. -
Page 17: Installation
Instruction book 3 Installation 3.1 Dimension drawings AD 1000 - 1250 connection details AD 750 connection details Dimension drawing 9828 0931 61... -
Page 18: Installation Proposal
Instruction book Reference Name Electric cable outlet Condensate drain outlet Air inlet Air outlet NPT adaptors (2X) (UL version only) Unit measurement in mm [x] = [inch] 3.2 Installation proposal Transport and handling The machine must be transported as shown in the following figure. For machine weight, see the section “Air dryer data”. - Page 19 Instruction book Moving To move the dryer use a forklift truck. Do not use metal cables for lifting. Move the dryer gently. Ensure that the operator can see the whole machine from the control panel and check the presence of any unauthorized persons in the vicinity of the machine. Compressor room example 9828 0931 61...
- Page 20 Instruction book Text on figure: Reference Name Compressor Air receiver To the air piping Dryer Ventilation proposal Air flow Minimum free area to be reserved for the dryer’s installation Service side Control panel side • Air treatment with dryer downstream of the air receiver: this can be used when the compressor runs constantly and the cooling capacity of the dryer is equal to the air delivery of the compressor.
- Page 21 Instruction book Reference Description It is recommended to install by-pass pipes over each filter and dryer together with ball valves in order to isolate the filters and/or dryer during service operations, without disturbing the compressed air delivery. Connection to the compressed air network 1.
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Page 22: Electric Cable Size And Setting Of Motor Circuit Breaker
40 ˚C (104 ˚F). For 60 Hz dryers, the cable size is valid for cable 90 ˚C (194 ˚F) at an ambient temperature of 40 ˚C (104 ˚F). Electrical data 50 Hz dryers IEC AD 750 AD 1000 AD 1250 Voltage [V] Maximum current [A] (at T = 46°C / T... -
Page 23: Pictographs
Instruction book 3.4 Pictographs Pictographs Pictographs - Danger signals Reference Name Warning, dangerous electric voltage Warning, air not fit for breathing Warning, high pressure Warning, rotating fan Warning, hot surface Switch off the voltage and depressurize the dryer before maintenance or repair 9828 0931 61... - Page 24 Instruction book Position of plates The plates fitted on the compressor unit are part of the machine; they have been applied for safety purposes and must not be removed or spoiled for any reason. Position of the data plates Reference Name Spare plate Code 1079 9903 48 Identification plate...
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Page 25: Operating Instructions
Instruction book 4 Operating instructions 4.1 Control panel Description Reference Name Dryer on/off switch Green indicator for voltage on, dryer running and blocked door Red indicator for alarm for condensate drain Red indicator for alarm for high pressure or fan motor protection Digital controller 9828 0931 61... - Page 26 Instruction book Digital controller Identification Front panel of the controller Reference Name Alarm icon Refrigerant compressor icon Fan icon PDP (dewpoint) temperature Unit (°C or °F) Alarm LED Button to snooze or to reset the alarm SET button UP button DOWN buttom Back to previous screen 8+10...
- Page 27 Instruction book The controller allows to remotely control a number of alarms. This is managed by means of a free NC (Normally Closed) contact. The contact opens in case of an alarm. Free contact location Fault messages Flashing fault message Description Remedy Dewpoint temperature probe...
- Page 28 Instruction book Flashing fault message Description Remedy Refrigerant compressor discharge Refer to the fault and remedies temperature too high; refrigerant section compressor stopped. Internal EPROM error Reset by pressing one of the four buttons. If the problem persists, replace the controller Maintenance required Perform the maintenance and reset...
- Page 29 Instruction book 8. Push and release the UP button (9). 9. Message “y” appears on display. 10. Push and release SET (8) to reset service alarm. 11. Message “y” blinks for 3 seconds. 12. Then “rL” is fixed and “°C” blinks on display for about 10 seconds. The service alarm is now reset.
- Page 30 Instruction book 9. Then “rS” is fixed and “°C” blinks on display for about 10 seconds. The new service interval is now set. Freeze protection function Once the digital controller detects a dewpoint temperature below -2°C during more than 2 minutes, (L2 Alarms), it switches off the refrigerant compressor.
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Page 31: Starting
Instruction book 4.2 Starting Attention The operator must apply all relevant safety precautions. To ensure optimum operational efficiency, do not use dryer on/off switch ( 1) repeatedly within a short time period. Wait at least 5 minutes to start the dryer again after stopping to allow pressure equalization. -
Page 32: During Operation
Instruction book 4.3 During operation Procedure Regularly check: • The display of digital controller. The pressure dewpoint will deviate from nominal if the air inlet conditions or volume flow differ from nominal. • That condensate is discharged via condensate outlet. The amount depends on the operating conditions. - Page 33 Instruction book Procedure Step Action Close the dryer inlet and outlet valve (customer’s installation). Switch off the dryer. If provided, open the dryer by-pass valve. 9828 0931 61...
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Page 34: Pressure Discharge Procedure
Instruction book 4.5 Pressure discharge procedure Follow below procedure to depressurize the dryer: 1. Close the ball valve (1). 2. Remove the panel (2). 3. Release the pressure in the dryer by pressing the condensate drain “TEST” pushbutton located on the steam trap (3). -
Page 35: Maintenance
Instruction book 5 Maintenance 5.1 Maintenance instructions Before starting any maintenance or repair, press the stop button, wait until the dryer has stopped, press the emergency stop button, switch off the voltage by means of the isolating switch (customer's installation) and depressurize the dryer. Safeguard against unintentional switch- on. -
Page 36: Disposal Of Used Material
Instruction book 5.2 Disposal of used material Used filters or any other used material (e.g. desiccant, lubricants, cleaning rags, machine parts, etc.) must be disposed of in an environmentally friendly and safe manner, and in line with the local recommendations and environmental legislation. Refer to local regulations for directions on how to dispose of electronic components in an environmentally friendly manner. -
Page 37: Settings
Instruction book 6 Settings 6.1 Device settings Regulating and safety devices The regulating and safety devices are factory-adjusted to obtain optimum performance of the dryer. Do not alter the setting of any of the devices. 9828 0931 61... -
Page 38: Problem Solving
Instruction book 7 Problem solving 7.1 Problem solving Position of air inlet and outlet valves (1) and condensate drain (3) Attention Use only authorized parts. Any damage or malfunction caused by the use of unauthorized parts is not covered by Warranty or Product Liability. Apply all relevant Safety precautions during maintenance or repair. - Page 39 Instruction book Faults and remedies Condition Fault Remedy Pressure dewpoint too high Air inlet temperature too high Check and correct; if necessary, install a pre-cooler Ambient temperature too high Check and correct; if necessary, draw cooling air via a duct from a cooler place or relocate the dryer Air inlet pressure too low Increase inlet pressure...
- Page 40 Instruction book Condition Fault Remedy Evaporator pressure is Hot gas by-pass valve Have hot gas by-pass valve adjusted too high or too low at incorrectly set or out of unload order Condenser pressure too See 2 high or too low Shortage of refrigerant Have circuit checked for leaks and recharged...
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Page 41: Technical Data
Instruction book 8 Technical data 8.1 Reference conditions and limitations Reference conditions Unit Compressed air inlet pressure bar(e) Compressed air inlet pressure psig 101.53 Compressed air inlet temperature - 50 Hz dryers ˚C - 50 Hz dryers ˚F - 60 Hz dryers ˚C - 60 Hz dryers ˚F... -
Page 42: Air Dryer Data
Instruction book 8.2 Air dryer data 50 Hz 400 V Air dryer type Unit AD 750 AD 1000 AD 1250 Nominal electric power input (Ambient temperature 3.26 3.89 4.75 25 °C, Inlet temperature 35 °C) Nominal electric power input (Ambient temperature 4.43... - Page 43 Amount of refrigerant gas and tonnes of CO2 equivalent for 50 Hz dryers Dryer Amount (kg) Amount (lbs) equivalent 7.94 7.52 AD 750 8.38 7.93 AD 1000 9.92 9.40 AD 1250 Amount of refrigerant gas and tonnes of CO2 equivalent for 60 Hz dryers...
- Page 44 Instruction book 9828 0931 61...
- Page 45 www.pneumatech.com...
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