Keltech KRAD M Series Instruction Manual
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Keltech KRAD M Series Instruction Manual

Compressed air dryers
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COMPRESSED AIR DRYERS
INSTRUCTION
MANUAL
KRAD M SERIES
(KRAD 30M to KRAD 250M)
WARRANTY NOTICE
Failure to follow the instructions and
pirocedures in this manual or misuse of this
equipment will VOID its warranty !

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  • Page 1 COMPRESSED AIR DRYERS INSTRUCTION MANUAL KRAD M SERIES (KRAD 30M to KRAD 250M) WARRANTY NOTICE Failure to follow the instructions and pirocedures in this manual or misuse of this equipment will VOID its warranty !
  • Page 2 Page 2...

  • Page 3: Table Of Contents

    TABLE OF CONTENTS IMPORTANT SAFETY NOTES - Please read ..... 1.1. Transportation ..............Positioning ................ Installation ................. Before operating ............. Qualified service personnel ........Maintenance by the user ..........INTRODUCTION TO THE KRAD DRYER ..... OPERATION ..............ELECTRICAL CONTROLLER ........Digi-Pro ................

  • Page 4: Important Safety Notes Please Read

    I. IMPORTANT SAFETY NOTES Please READ When operating the air dryer the operator must apply safe working methods and observe all local safety instructions and relevant regulations. A) Prior to installation, the dryer and the compressed air system are to be depressurized and disconnected from the electrical main supply.

  • Page 5: Qualified Service Personnel

    1.5. Qualified service personnel A) Maintenance and repairs should only be performed when the air dryer is shut down and depressurized and when the main power switch is turned off. B) Use only the appropriate tools for maintenance and repair. C) Before dismantling a part under pressure, disconnect the pressure sources and depressurize the system.
  • Page 6 B) Dryer label The following label is affixed on the cabinet of the refrigerant compressed air dryer. Dryer label describtions Model No: Dryer Model No Serial No: Dryer Serial No Max Pressure: Dryer maximum working pressure Max Amper: Maximum allowed amount of current Fuse Amp Maximum size of protector Element Type: Filter element type in Air Dryer...
  • Page 7 B) The condensates are collected after centrifugal separation and drained out through the automatic trap. C) As long as the compressed air temperature does not drop below dew point, there will be no condensation in the air circuit. Compressed Air Dryer Working Principle Refrigerant Gas High Pressure Line Refrigerant Gas Low Pressure Line Compressed Dry A r Outlet...
  • Page 8 • If a corrosive water such as sea water is to be used, the condenser must be manufactured using special materials. If a condenser produced as a standard is used with sea water contrary to the information, the dryer will be out of warranty. •...
  • Page 9 8) Refrigerant circuit controls A) Liquid refrigerant injection: The liquid refrigerant is into the evaporator by a control valve. This valve is a thermostatic or pressostatic one maintaining a constant overheats of the refrigerant in the evaporator(s). B) Constant evaporating pressure: In the dryers equipped with a by-pass valve, the evaporating pressure is kept constant by a controlled injection of hot gas from the high-pressure side into the low-pressure section of the circuit.
  • Page 10 Water Cooled System 11) Accessories Temperature switch: Temperature switch: Located inside the dryer, this temperature switch is adjustable from 0° up to 35 °C. Digital Controller –DigiPro: This device helps dryer save energy when there is not any compressed air flow in the dryer.

  • Page 11: Operation

    3. OPERATION Control panels for KRAD M Series The control panel of the dryer includes the following elements: Monophase Digital Controller KRAD 15M - KRAD 250M Digi-Pro IMPORTANT NOTE The Dryer has two Compressed Air Filter inside. It is better to change filter element for the best efficiency when the alarm status is active.
  • Page 12 3.1. During Operation Regularly check the digital temperature controller Digi-Pro on dryer. 3.2 Start up and shut-down Warning: Avoid leaving the dryer off when compressed air is still flowing through it. 3.3 Starting for the first time or after a long stop 1) Set the rotary switch to “I”...

  • Page 13: Electrical Controller

    4. ELECTRICAL CONTROLLER 4.1 DIGI-PRO 4.1.1 Description With the Digi-Pro series controllers, air dryers have outstanding technology for both functionality and dynamism, as well as appearance. The multi-functional display provides an accurate digital dew point display as well as coded alarm monitoring of the refrigerant dryer. DIGITAL CONTROLLER ADVANTAGES;...
  • Page 14 4.1.4 ALARM DISPLAY Alarms / warnings are displayed on the digital screen. That means the dryer is not working under normal operating conditions, which are outside the range of set values. Alarm Code Alarm Description Reason for Alarm Low Temperature Alarm Refrigerant line temperature is lower than specified set values High Temperature Alarm Refrigerant line temperature is higher than specified set values...
  • Page 15 4.1.6 REPLACING FILTER KIT WITH ENCRYPTION CODE FOR DIGIPRO CONTROLLER Alarm Code F L R 1. In case of filter alarm, a warning digit-code appears on 3 2 1 the controller screen. 2. Inform the authorized distributor or service. 3. Replace the filter kit with an original spare part. 4.
  • Page 16 4.3.5 Correct Drain Hose Connection Comment Correct Drain Hose Connection Length of the drain hose that will be added must not exceed 10 meters. It should be connected by trying to keep the length ( <10 mt. ) of the drain hose to be added as short as Added Drain Hose possible.

  • Page 17: Technical Specifications

    5. TECHNICAL SPECIFICATIONS Model Capacity Connection Voltage Total Nominal Total Fuse Amount of Refrigerant Pressure (m³/h) Size Installed Operting (Amp) Refrigerant drop Power (Amp) (gr) (mbar) (kw) KRAD 15M 1/2" 230V / 1 / 50 Hz 0,34 1,72 2,10 8,85 R513a R513a KRAD 25M...

  • Page 18: Diagrams

    6.DIAGRAMS 6.1 AIR FLOW DIAGRAMS KRAD 15M - KRAD 25M Page 18...
  • Page 19 6.1 AIR FLOW DIAGRAMS KRAD 40M to KRAD 80M Page 19...
  • Page 20 6.1 AIR FLOW DIAGRAMS KRAD 100M to KRAD 150M Page 20...
  • Page 21 6.1 AIR FLOW DIAGRAMS KRAD 200M to KRAD 250M Page 21...

  • Page 22: Electrical Diagrams

    6.2 KRAD M ELECTRICAL DIAGRAMS With Control & Power “User must supply the protective earth conductor of the dryer. The conductor is to be connected to the point on the conducting body of the dryer, specified by a sticker with the protective earth symbol next to it.
  • Page 23 6.2 ELECTRICAL DIAGRAMS KRAD 15M to KRAD 25M Page 23...
  • Page 24 6.2 ELECTRICAL DIAGRAMS KRAD 40M to KRAD 125M Page 24...
  • Page 25 6.2 ELECTRICAL DIAGRAMS KRAD 150 M to KRAD 250M Page 25...

  • Page 26: General Arrangements

    6.3 KRAD M ID DIAGRAM DRAWINGS & GENERAL ARRANGEMENTS Page 26...
  • Page 27 6.3 ID DIAGRAM DRAWINGS KRAD 15M Page 27...
  • Page 28 6.3 ID DIAGRAM DRAWINGS KRAD 25M Page 28...
  • Page 29 6.3 ID DIAGRAM DRAWINGS KRAD 40M Page 29...
  • Page 30 6.3 ID DIAGRAM DRAWINGS KRAD 60M Page 30...
  • Page 31 6.3 ID DIAGRAM DRAWINGS KRAD 80M Page 31...
  • Page 32 6.3 ID DIAGRAM DRAWINGS KRAD 100M Page 32...
  • Page 33 6.3 ID DIAGRAM DRAWINGS KRAD 125M Page 33...
  • Page 34 6.3 ID DIAGRAM DRAWINGS KRAD 150M Page 34...
  • Page 35 6.3 ID DIAGRAM DRAWINGS KRAD 200M Page 35...
  • Page 36 6.3 ID DIAGRAM DRAWINGS KRAD 250M Page 36...
  • Page 37 7.GENERAL ARRANGEMENTS Model Replacement Kits Control Length Width Height Weight Type (mm) (mm) (mm) (kg) KRAD 15M ADFK1-REV3 DigiPro ADFK1-REV3 KRAD 25M DigiPro ADFK2-REV1 KRAD 40M DigiPro ADFK2-REV1 KRAD 60M DigiPro KRAD 80M ADFK2-REV1 DigiPro KRAD 100M ADFK3-REV1 DigiPro ADFK3-REV1 KRAD 125M DigiPro KRAD 150M...

  • Page 38: Exploded Diagrams

    8. KRAD M EXPLODED DIAGRAMS & SPARE PART LISTS Page 38...
  • Page 39 8.1 - ED & Spare Part List KRAD 15M Page 39...
  • Page 40 1019759 G25-100 CLAMP KIT 1442270100 MK10-35 ISOLATION POLYSTYRENE TOP 1612250731 1/4"-4MM STRAIGHT FEMALE FITTINGS 1612264166 MK10-20-30-35-08-GON (7012 THICK RAGGED GREY) 1612264165 MK10-20-30-35-07-GON (7012 THICK RAGGED GREY) AIR DRYER HANDLE 1039220100 1612264162 MK10-20-30-35-03-GON (7012 THICK RAGGED GREY) 1612264161 MK10-20-30-35-02-GON (7012 THICK RAGGED GREY) 1023220100 POLYAMIDE CABLE UNION PG11 1612264164...
  • Page 41 8.1 - ED & Spare Part List KRAD 25M Page 41...
  • Page 42 1019759 G25-100 CLAMP KIT 1442270100 MK10-35 ISOLATION POLYSTYRENE TOP 1612250731 1/4"-4MM STRAIGHT FEMALE FITTINGS 1612264166 MK10-20-30-35-08-GON (7012 THICK RAGGED GREY) 1612264165 MK10-20-30-35-07-GON (7012 THICK RAGGED GREY) AIR DRYER HANDLE 1039220100 1612264162 MK10-20-30-35-03-GON (7012 THICK RAGGED GREY) 1612264161 MK10-20-30-35-02-GON (7012 THICK RAGGED GREY) POLYAMIDE CABLE UNION PG11 1023220100 1612264164...
  • Page 43 8.1 - ED & Spare Part List KRAD 40M Page 43...
  • Page 44 1019819 G150-250 CLAMP KIT 1442350100 MK40-60 ISOLATION POLYSTYRENE TOP 1612250731 1/4" 4mm STRAIGHT FEMALE FITTINGS 1/4" 6mm STRAIGHT FEMALE FITTINGS 1034620100 1/4"-4mm UNION - ELBOW 1612250732 3mt CABLE WITH PLUG 1031920100 1023220100 POLYAMIDE CABLE UNION PG11 1047510100 MK40-50-60-08 PANEL (7012 THICK RAGGED GREY) 1043740100 MK40-50-60-02 PANEL (7012 THICK RAGGED GREY) MK40-50-60-07 PANEL (7012 THICK RAGGED GREY)
  • Page 45 8.1 - ED & Spare Part List KRAD 60M Page 45...
  • Page 46 1019819 G150-250 CLAMP KIT 1442350100 MK40-60 ISOLATION POLYSTYRENE TOP 1612250731 1/4" 4mm STRAIGHT FEMALE FITTINGS 1034620100 1/4" 6mm STRAIGHT FEMALE FITTINGS 1612250732 1/4"-4 UNION - ELBOW 1031920100 3mt CABLE WITH PLUG 1023220100 POLYAMIDE CABLE UNION PG11 1047510100 MK40-50-60-08 PANEL (7012 THICK RAGGED GREY) 1043740100 MK40-50-60-02 PANEL (7012 THICK RAGGED GREY) MK40-50-60-07 PANEL (7012 THICK RAGGED GREY)
  • Page 47 8.1 - ED & Spare Part List KRAD 80M Page 47...
  • Page 48 1019819 G150-250 CLAMP KIT 1442350100 MK40-60 ISOLATION POLYSTYRENE TOP 1612250731 1/4" 4mm STRAIGHT FEMALE FITTINGS 1034620100 1/4" 6mm STRAIGHT FEMALE FITTINGS 1612250732 1/4"-4 UNION - ELBOW 1031920100 3mt CABLE WITH PLUG 1023220100 POLYAMIDE CABLE UNION PG11 1047510100 MK40-50-60-08 PANEL (7012 THICK RAGGED GREY) 1043740100 MK50-60-02 PANEL (7012 THICK RAGGED GREY) MK40-50-60-07 PANEL (7012 THICK RAGGED GREY)
  • Page 49 8.1 - ED & Spare Part List KRAD 100M Page 49...
  • Page 50 1020952 G300-600 CLAMP KIT 1442370100 MK70-90 ISOLATION POLYSTYRENE TOP 1612250731 1/4"-4 STRAIGHT FEMALE FITTINGS 1029740100 1/4"-6*8 METAL SWIVELLING ELBOW UNION 1023220100 POLYAMIDE CABLE UNION PG11 1044830100 MK70-80-90-08 PANEL (7012 THICK RAGGED GREY) MK70-03A PANEL (7012 THICK RAGGED GREY) 1045190100 1045220100 MK70-80-90-07 PANEL (7012 THICK RAGGED GREY) AIR DRYER HANDLE 1039220100...
  • Page 51 8.1 - ED & Spare Part List KRAD 125M Page 51...
  • Page 52 1020952 G300-600 CLAMP KIT 1442370100 MK70-90 ISOLATION POLYSTYRENE TOP 1612250731 1/4"-4 STRAIGHT FEMALE FITTINGS 1029740100 1/4"-6*8 METAL SWIVELLING ELBOW UNION 1023220100 POLYAMIDE CABLE UNION PG11 1044830100 MK70-80-90-08 PANEL (7012 THICK RAGGED GREY) 1045420100 MK80-90-03B PANEL (7012 THICK RAGGED GREY) 1045220100 MK70-80-90-07 PANEL (7012 THICK RAGGED GREY) 1039220100 AIR DRYER HANDLE...
  • Page 53 8.1 - ED & Spare Part List KRAD 150M Page 53...
  • Page 54 1020952 G300-600 CLAMP KIT 1442370100 MK70-90 ISOLATION POLYSTYRENE TOP 1612250731 1/4"-4 STRAIGHT FEMALE FITTINGS 1029740100 1/4"-6*8 METAL SWIVELLING ELBOW UNION 1023220100 POLYAMIDE CABLE UNION PG11 1044830100 MK70-80-90-08 PANEL (7012 THICK RAGGED GREY) 1045420100 MK80-90-03B PANEL (7012 THICK RAGGED GREY) 1045220100 MK70-80-90-07 PANEL (7012 THICK RAGGED GREY) 1039220100 AIR DRYER HANDLE...
  • Page 55 8.1 - ED & Spare Part List KRAD 200M Page 55...
  • Page 56 1027870100 76,1mm (2 1/2") RIGID COUPLAGE CLAMP 1020002 G851-1210 CLAMP KIT 1442300100 MK100-110 ISOLATION POLYSTYRENE LOWER 1612250731 1/4" -4mm STRAIGHT FEMALE FITTINGS 1062780100 MK90-100 COMPRESSOR 220/1/50 ELECTRIC BOX 1023220100 POLYAMIDE CABLE UNION PG11 1057380100 NTC SENSOR 1022290100 MK10-150 COLLECTOR 3mt CABLE WITH PLUG 1031920100 MK100-110-14 PANEL (7012 THICK RAGGED GREY) 1041820100...
  • Page 57 8.1 - ED & Spare Part List KRAD 250M Page 57...
  • Page 58 76,1mm (2 1/2") RIGID COUPLAGE CLAMP 1027870100 1020002 G851-1210 CLAMP KIT 1442300100 MK100-110 ISOLATION POLYSTYRENE LOWER 1612250731 1/4" 4mm STRAIGHT FEMALE FITTINGS 1062780100 MK90-100 COMPRESSOR 220/1/50 ELECTRIC BOX 1023220100 POLYAMIDE CABLE UNION PG11 1057380100 NTC SENSOR 1022290100 MK10-150 COLLECTOR 3mt CABLE WITH PLUG 1031920100 MK100-110-14 PANEL (7012 THICK RAGGED GREY) 1041820100...

  • Page 59: Components Location

    9. COMPONENTS LOCATION All main components located into dryer identified with labels as listed here under. CAUTION: Due to manufacture design, some components out of the list are not installed into the dryer. Electrical components: Accessories : A01: Control circuit transformer A02: Power circuit transformer A10:...
  • Page 60 Problem Possible Cause Repair Comments Dryer is The connection has Invert two phases 3-phase dryers are equipped with a phase controller switched on, inverted phases to avoid the fans from turning in the opposite indicator light direction. is lit but the Refrigeration unit is not Check refrigeration comp- Several factors can cause compressor failure.
  • Page 61 Problem Possible Cause Repair Comments Water in system Compressed Air Inlet and Check inlet and outlet This dryer is designed for air flow in one direction only. Inlet and outlet connections are connections. outlet directions are identified on the dryer. reversed.
  • Page 62 Problem Possible Cause Repair Comments The unit will not Excessive ambient Designed conditions and cor- A high ambient temperature may cause the refrigerant run or cycles off temperature rection factors are described system to operate at higher than normal pressures. and on.

This manual is also suitable for:

Krad 30mKrad 250m

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