Pfannenberg DTS Series Operating Manual
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Pfannenberg DTS Series Operating Manual

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Operating Manual
Attachment and Installation Cooling Units
DTS and DTI Series 6201 / 6301
Standard Controller (SC) – 230 V
Original instruction manual – Version 1.0, February 2022

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Summary of Contents for Pfannenberg DTS Series

  • Page 1 Operating Manual Attachment and Installation Cooling Units DTS and DTI Series 6201 / 6301 Standard Controller (SC) – 230 V Original instruction manual – Version 1.0, February 2022...

  • Page 2: Table Of Contents

    About this manual ................................ 4 Use and safekeeping ..............................4 Exclusion of liability ..............................4 Target group ................................5 Explanation of the notes ............................6 Marking of contents..............................7 1.5.1 Handling instructions ............................7 1.5.2 Links and cross references ..........................7 Safety ....................................
  • Page 3 Assembly ................................30 4.5.1 General ................................30 4.5.2 DTS cooling unit assembly (side attachment) ..................... 31 4.5.3 Assembly of the DTI cooling unit (Installation) ....................33 Electrical connection ............................... 36 4.6.1 Notes for connecting cables to the unit....................... 36 4.6.2 Electrical circuit diagram ............................ 37 4.6.3 Connection compartment ...........................

  • Page 4: About This Manual

    Pfannenberg reserves the right to change this document, including the exclusion of liability, at any time without notice and is not liable for any consequences of this change.

  • Page 5: Target Group

    Target group The different activities for handling the unit must be allocated to the target groups. The necessary personnel qualifications are subject to different legal requirements according to the application site. The owner must ensure that the applicable laws are observed. The admissible personnel and their minimum qualification are defined below insofar as this is not regulated by law.

  • Page 6: Explanation Of The Notes

    Explanation of the notes The warnings are indicated by signal words which express the degree of danger. The warnings must be heeded to avoid accidents, injuries and property damages. Explanation of the warnings in this manual: DANGER Brief description of the danger The signal word DANGER indicates an imminent danger.

  • Page 7: Marking Of Contents

    Marking of contents 1.5.1 Handling instructions Handling instructions are indicated in this manual as follows: Requirements Requirements and additional warnings Required tools and materials Tools and materials required for handling Procedure <Handling steps> … – <Intermediate result / Further instructions> …...

  • Page 8: Safety

    Safety Intended use The Pfannenberg add-on and built-in cooling units of the DTS and DTI series are stationary cooling units for heat dissipation from switch cabinets. They are available in two versions: • The DTI cooling units are installed partly sunken into the side or door.

  • Page 9: Foreseeable Misuse

    Foreseeable misuse The following points describe a foreseeable misuse of the unit: • Use of the unit as a storage place, work platform. • Attachment of transport aids. • Installation in unsuitable locations. • Outdoor operation. • Operation outside of the permissible technical data. See section "Technical data". •...

  • Page 10: Terms Of Warranty

    The following must be observed to assert warranty claims and to return the unit: • Attach a precise description of the defect and the SRO (RMA) number assigned by Pfannenberg to the cooling unit. • Enclose proof of purchase (copy of delivery note or invoice).

  • Page 11: Unit Description

    Unit description Unit structure The Pfannenberg add-on and built-in cooling units of the DTS and DTI series are designed for heat dissipation from switch cabinets. Sensitive components in the switch cabinet are protected. Condensate produced during cooling is discharged through a built-in system.

  • Page 12: Scope Of Delivery

    For safe and reliable operation, use only original parts of the manufacturer. The Pfannenberg part number for spare parts can be found in chapter "Spare parts and accessories", Page 64. An optional extension by a filter adapter for different filter mats (felt filter, pleated filter and metal filter) is available.

  • Page 13: Filter Adapter (Option)

    3.3.1 Filter adapter (option) G00052 Fig. 2: Filter adapter on the cooling unit For permanent protection of the external air circuit from contamination, the optional filter adapter (1) can be fitted with a filter mat (2) at the air inlet (3) of the cooling unit. The filter adapter (1) is simply clipped into the air inlet (3).

  • Page 14: Functional Description

    Functional description 3.4.1 Air circuit CAUTION Risk of burns Risk of burns due to high temperatures at the ambient air outlet. The air outlet can get very hot depending on the ambient temperature. • Do not hold any parts of the body directly in front of the ambient air outlet (A). G00001-01 Front view Side view...

  • Page 15: Controller

    3.4.2 Controller The controllers are control units for setting refrigeration functions and operating data. They allow readouts of system messages and diagnostic data. The controllers have a service interface at which different configurations are possible. They also have a connection for collective fault signals. G00002 Fig.

  • Page 16: Refrigeration Circuit

    3.4.3 Refrigeration circuit G00004-01 Fig. 6: Refrigeration circuit Condenser Compressor Filter dryer Electronic controller Expansion valve Display unit (SC)/control unit (MC) Evaporator Hight pressure switch Temperature sensor Condenser (external) Evaporator fan (internal) The cooling units consist of different components, see Fig. 6. •...

  • Page 17: Safety Concept

    3.4.4 Safety concept WARNING Risk of injury due to modified safety devices. Non-functional, modified or defective safety devices lead to serious accidents. • All modifications to the unit and especially the safety devices are prohibited. • In case of defective safety devices, shut down the unit immediately and take it out of operation. 3.4.4.1 Safety devices •...

  • Page 18: Condensate Treatment

    3.4.5 Condensate treatment CAUTION Danger of slipping on spilled condensate Danger of slipping on condensate spilling onto the floor from the condensate drain hose. • Collect condensate from the condensate drain hose. ATTENTION Damage to the switch cabinet components by formation of condensate Switch cabinet interior temperatures below the dew point of the ambient air or damaged switch cabinet seals can lead to excessive condensate formation.

  • Page 19: Type Plate

    The type plate is on the back of the cooling unit housing. • The figure shows the standard design adopted by EU member states. The type plate design may differ in other countries. Pfannenberg GmbH Werner-Witt-Straße 1 D-21035 Hamburg www.pfannenberg.com...
  • Page 20 Value Description Type Unit type Part number Serial number Urated Rated voltage/frequency Irated Nominal current Istart Starting current Fuse Evap. FLA / HP Evaporator fan Full Load Amps / horse power Full-load current consumption of the evaporator fan/capacity of the evaporator fan in HP Cond.

  • Page 21: Signs And Symbols On The Unit

    Signs and symbols on the unit The signs and symbols attached to the unit must be observed. The signs and symbols attached to the unit must not be removed and must be kept in a fully legible condition. Damaged or illegible signs and symbols must be replaced.

  • Page 22: Technical Data

    Technical data 3.7.1 Refrigeration circuit Designation Unit Model DTI / DTS 6201 Cooling capacity at A35 / A35 */** 1150 Cooling capacity at A50 / A35 */** Refrigerant type * – R134a Refrigerant quantity * Temperature setpoint (factory setting) °C (°F) +35 °C (95 °F) Fault indication: Switch cabinet interior temperature °C (°F)

  • Page 23: Electrical Data

    3.7.2 Electrical data Designation Unit Model DTI / DTS 6201 Rated voltage */** 230 V, 1~ Rated frequency * 50/60 Functional area — DIN IEC 60038 Power consumption * A35 / A35 50 Hz 60 Hz Power consumption * A50 / A35 50 Hz 60 Hz Nominal current *...

  • Page 24: Dimensions

    3.7.3 Dimensions Designation Unit Model DTI / DTS 6201 Height DTI: 1537 DTS: 1540 Width Depth with cover (standard) Installation depth DTI Weight DTI: 55 DTS: 58 Installation attitude — Vertical Unit construction — Standard: Steel sheet Option: With stainless-steel cover Tab.

  • Page 25: Assembly And Initial Commissioning

    Assembly and initial commissioning Safety information DANGER Danger of fatal injury due to electric shock! Parts may be under voltage when the unit is opened and can cause an electric shock if touched. Observe the following points when working on the open unit: •...

  • Page 26: Transport

    Transport Observe the following to avoid personal injury and property damage: • Work may only be performed by qualified specialists. • Observe the safety information. WARNING Risk of injury for persons! Increased risk of injury due to improper transport. • The unit may only be transported by persons who are familiar with the procedure and aware of the risks as well as having the necessary qualifications.

  • Page 27: Transporting The Cooling Unit

    4.2.1 Transporting the cooling unit Prerequisites The cooling unit is accommodated in the factory packaging. Required tools and materials Lashing straps, if necessary loading crane Procedure Secure the unit properly for transport using lashing straps. Always transport in the operating position. Only lift the unit by its housing.

  • Page 28: Crane Transport

    4.2.2 Crane transport DANGER Danger to life due to suspended loads Tipping or falling loads can cause severe to fatal injuries. • Never stand beneath suspended loads. • Only use approved lifting gear and slings which are designed for the total weight of the attached load. •...

  • Page 29: Storage

    Storage ATTENTION Loss of warranty! Failure to observe the storage conditions will lead to loss of warranty. Note the following points for storage of the unit: • Observe the permissible storage temperature of -20 … +70 °C (-4 … +131 °F). •...

  • Page 30: Assembly

    Assembly WARNING Risk of injury! Risk of injury for persons due to the heavy weight of the units! The total weight must be observed when transporting the unit. • Observe the weight according to section "Dimensions", Page 24. • Always transport the unit with several persons or suitable lifting gear. •...

  • Page 31: Dts Cooling Unit Assembly (Side Attachment)

    4.5.2 DTS cooling unit assembly (side attachment) 4.5.2.1 Making cut-outs for DTS cooling unit G00007 Assembly holes Assembly cut-outs Fig. 10: External view of switch cabinet, assembly bores and cut-outs Holes Assembly cut-outs Device contour Requirements DANGER – Danger to life due to electric shock. Make sure that the unit is voltage-free. •...
  • Page 32 4.5.2.2 Fitting the profile seal ATTENTION Damage to the switch cabinet and the cooling unit! Incorrectly fitted seals can lead to excessive formation of condensate in the switch cabinet and thus to short-circuits and damage due to condensate. • Fit the seal so that it provides sealing against the switch cabinet. •...

  • Page 33: Assembly Of The Dti Cooling Unit (Installation)

    4.5.3 Assembly of the DTI cooling unit (Installation) 4.5.3.1 Making cut-outs for DTI cooling unit G00009 Fig. 12: External view switch cabinet, assembly cut-outs Air inlet Device contour Air outlet Assembly cut-out Prerequisites DANGER – Danger to life due to electric shock. Make sure that the unit is voltage-free. •...
  • Page 34 4.5.3.2 DTI cooling unit switch cabinet assembly (installation) G00010-01 (4A + 20 mm) Fig. 13: Assembling the cooling unit Catch spring Housing cut-out for fastening spring Fastening spring (number depends on the size: Housing cut-out for fastening spring DTI 6201 to 6501: 6×; DTI 6801: 10×) (for switch cabinets with reinforcing frame) DTI cooling unit Switch cabinet wall/switch cabinet door...
  • Page 35 Prerequisites DANGER – Danger to life due to electric shock. Make sure that the unit is voltage-free. • The cut-out for the DTI cooling unit is made, see "Making cut-outs for DTI cooling unit", Page 33. Required tools and materials •...

  • Page 36: Electrical Connection

    Electrical connection DANGER Danger of fatal injury due to electric shock! Parts may be under voltage when the unit is opened and can cause an electric shock if touched. Observe the following points when working on the open unit: • Work on the electrical system may only be carried out by authorized electricians.

  • Page 37: Electrical Circuit Diagram

    4.6.2 Electrical circuit diagram 1,2 - Störmeldung / failure indication / Tür offen / dooro pen /p orteo uvert contacts ecd e défaut Tür geschlossen / doorc losed/ p ortef ermé 4,5 - Türkontakt / doorc ontact / contactd e porte TK TK 1 2 3 4 GNYE...

  • Page 38: Connection Compartment

    4.6.3 Connection compartment G00094 Fig. 15: Connection compartment Cover plate Terminal strip mains connection Screws (2×) for cover plate Terminal strip multimaster control (only for MC-Controller) Grounding connection for cover plate Terminal strip fault indication/door contact Cable tie eyes for strain relief Service interface F2/F3 Control voltage fuse...

  • Page 39: Setting The Dip-Switch

    4.6.4 Setting the DIP-switch OFF 1 G00011-01 Fig. 16: Setting the DIP-switch Fastening screws (card cage) Card cage Controller DIP-switch The DIP-switch on the controller facilitates the setting of the target and limit values for temperatures. The default factory setting of the values in the delivery condition is as follows: Parameters Factory setting Setpoint of the switch cabinet temperature...
  • Page 40 4.6.4.2 DIP-switch setting possibilities NOTE The cooling unit carries voltage if the red LED light on the controller is flashing. Always make sure that there is no voltage on the unit before carrying out any work on the electrical connections. DIP-switch Temperatures in °C Temperatures in °F...

  • Page 41: Door Contact Switch

    4.6.5 Door contact switch ATTENTION Damage to the unit! Damage to the unit and the controller by applying external voltage to the door contact input. • Do not apply external voltage to the door contact input. • The door contact input provides a low voltage (< 20 V, 20 mA) for the door contact switch. Fitting a door contact switch increases safety and prevents increased condensate formation.

  • Page 42: Collective Fault Signal

    4.6.6 Collective fault signal The unit is equipped with a potential-free changeover contact for the collective fault signal. Three connections are provided for connecting the collective fault signal. The terminals are marked with the device tag 4.6.6.1 Connecting the collective fault signal Prerequisites DANGER –...

  • Page 43: Mains Connection

    4.6.7 Mains connection DANGER Danger of fatal injury due to electric shock! Unconnected or incorrectly installed protective conductor systems can generate hazardous voltages and cause electrical shocks resulting in serious accidents. • Work may only be carried out by qualified specialists. •...
  • Page 44 4.6.7.1 Electrical connection of the cooling unit The device corresponds to overvoltage category II. Fulfill the following general requirements to ensure safe and reliable operation of the cooling unit: • Connection of an upstream temperature control on the feed side is prohibited. •...

  • Page 45: Adapting The Unit To The Mains Voltage

    4.6.8 Adapting the unit to the mains voltage NOTE Only cooling units with a rated voltage of 400 / 460 V, 3~ can be optionally connected to another mains voltage. • Cooling units with the rated voltage 230 / 115 V, 1~ have no transformer options. 4.6.9 Equipotential bonding connections Functional equipotential bonding...

  • Page 46: Operation

    Operation General functions ATTENTION Damage to the unit Operation without the unit cover prevents sufficient air supply to the condenser and restricts the intended cooling function. • Only operate the cooling unit with the unit cover in place. G00015 Fig. 21: Electronic control function The Standard-Controller (SC) has an indicator unit with a green LED light (1).

  • Page 47: Operation Of The Cooling Unit

    Only the specified refrigerant may be used. NOTE For the Pfannenberg part numbers for spare parts, see section "Spare parts and accessories", Page 64. Operating Manual | Attachment and Installation Cooling Units | Standard Controller (SC) – 230 V | 086100113...

  • Page 48: Service Interface

    Service interface G00096 Fig. 22: Service interface Service interface on the controller USB adapter The service interface enables operating parameters to be changed. • A USB adapter and the configuration software ECoolPLANT 2.X, including the USB driver software are required for this. •...

  • Page 49: Service And Maintenance

    Service and maintenance Safety information DANGER Danger of fatal injury due to electric shock! Parts may be under voltage when the unit is opened and can cause an electric shock if touched. Observe the following points when working on the open unit: •...

  • Page 50: General

    A shorter guide value of two to six months applies between the maintenance intervals. • The functions of the Pfannenberg filters are optimally adapted to the cooling units. Therefore, the use of Pfannenberg filters has positive effects on the scope of the maintenance work.

  • Page 51: Maintenance Schedule

    Maintenance schedule Maintenance interval: Perform every twelve months. Every two to six months, in ambient air containing oil and dust. Type: ______________________________________________________________________ Serial number: ______________________________________________________________________ Date of maintenance: ______________________________________________________________________ Executing specialist (name): ______________________________________________________________________ Unit area designation / Visual To do Result necessary maintenance work inspection...

  • Page 52: Maintenance Work

    Maintenance work 6.4.1 Cleaning WARNING Danger of accident and component damage Danger of accident and component damage due to improper cleaning. Cleaning the cooling units using water jets, steam jet cleaners or high-pressure cleaners or sharp objects may damage the electrical and electronic components.
  • Page 53 6.4.1.1 Removing/assembling the unit cover CAUTION Danger of crushing when removing/assembling the unit cover Hands and other body parts may be crushed when removing and reinserting the unit cover. • Do not place any body parts between the frame, springs and the unit cut-out. •...
  • Page 54 Assembling the unit cover Prerequisite DANGER – Danger to life due to electric shock. Make sure that the unit is voltage-free. Wait for a discharge phase of 10 minutes for the electrical components. The unit should only be opened afterwards. Procedure Plug the earthing cable (3) into the inside of the unit cover (2).
  • Page 55 6.4.1.2 Cleaning the heat exchanger ATTENTION Damage to components Damage to the heat exchanger fins due to incorrect cleaning. • Clean the heat exchanger fins with a soft brush, compressed air or a vacuum cleaner with a brush attachment. NOTE The time intervals for cleaning depend strongly on the contamination of the ambient air.
  • Page 56 6.4.1.3 Cleaning filter mats ATTENTION Damage to components Damage to the filter mats due to improper cleaning. • Avoid high-pressure water jets. • Do not wring out filter mats. • Replace oily or greasy filter mats immediately. NOTE The time intervals for cleaning or replacing the filter mats depend strongly on the contamination of the ambient air. Requirements •...

  • Page 57: Rectification Of Operating Faults

    Rectification of operating faults General NOTE Flashing of the red LED light on the controller card is not a fault indication or error message. The red LED light indicates that the cooling unit is carrying voltage. Fault Possible causes Remedial measures Unit does not cool, evaporator fan Temperature setting too high.

  • Page 58: Error Messages

    7.1.1 Error messages The error numbers are not displayed in units with Standard Controllers. Using the ECoolPLANT software, it is possible to read out the error numbers on the computer. NOTE Flashing of the red LED light on the controller card is not a fault indication or error message. The red LED light indicates that the cooling unit is carrying voltage.
  • Page 59 Error no. Fault/unit behavior Possible causes Remedial measures Er08 LED: flashes Sensor 2 (TS2) defective. Replace sensor 2 according to the unit type. Compressor: Sensor 2 is plugged to the Evaporator fan (internal): card, not permanently soldered. Condenser fan (external): Fault signal contact:: Open Antifreeze (option):...

  • Page 60: Decommissioning

    Page 61! NOTE Old units are also professionally disposed of by Pfannenberg. Delivery to one of our manufacturing facilities shall be free of charge. Operating Manual | Attachment and Installation Cooling Units | Standard Controller (SC) – 230 V | 086100113...

  • Page 61: Dismantling And Disposal

    They must be taken to a separate electrical and electronic waste collection depot. For further information about disposal, scan the QR code or call www.pfannenberg.com/disposal. Safety information All work may only be performed by persons with certified qualifications under consideration of: •...

  • Page 62: Dismantling

    ATTENTION Hazards for the environment Refrigerants are harmful to the environment as soon as they escape into the atmosphere. • Only have work on the refrigeration unit carried out by experts in accordance with the chemicals climate protection directive. • Do not damage refrigerant lines.

  • Page 63: Disposal

    Disposal NOTE Old units are also professionally disposed of by Pfannenberg. Delivery to one of our manufacturing facilities shall be free of charge. Dismantled components should be recycled unless return or disposal agreements have been made: • Scrap metals •...

  • Page 64: 10 Spare Parts And Accessories

    10 Spare parts and accessories NOTE • Always state the Pfannenberg part number when ordering spare parts and accessories. • The Pfannenberg part number for the controller is on the controller transformer. Designation Designation 18811100067 Evaporator fan (internal) 18811100067 Condenser fan (external)

  • Page 65: 11 Index

    11 Index Filter mat ................ 13 About this document Functional description Handling instructions ............. 7 Air circuit ..............14 Accessories ..............64 Adapting the mains voltage ..........45 Mains connection ............43 Assembly Maintenance schedule............ 51 DTI cooling unit (installation) ........33 Maintenance work ............
  • Page 66 All the contained information has been carefully checked. However, we shall assume no liability with regard to the completeness and accuracy of the information. Company details: Pfannenberg GmbH Werner-Witt-Strasse 1 21035 Hamburg Tel. +49 40 734 12-0 www.pfannenberg.com © Pfannenberg 2022...
  • Page 67 Operating Manual Attachment and Installation Cooling Units DTS and DTI Series 6201 / 6301 Standard Controller (SC) – 400 V, 2~ Original instruction manual – Version 1.0, February 2022...
  • Page 68 About this manual ................................ 4 Use and safekeeping ..............................4 Exclusion of liability ..............................4 Target group ................................5 Explanation of the notes ............................6 Marking of contents..............................7 1.5.1 Handling instructions ............................7 1.5.2 Links and cross references ..........................7 Safety ....................................
  • Page 69 Assembly ................................30 4.5.1 General ................................30 4.5.2 DTS cooling unit assembly (side attachment) ..................... 31 4.5.3 Assembly of the DTI cooling unit (Installation) ....................33 Electrical connection ............................... 36 4.6.1 Notes for connecting cables to the unit....................... 36 4.6.2 Electrical circuit diagram ............................ 37 4.6.3 Connection compartment ...........................

  • Page 70: About This Manual

    Pfannenberg reserves the right to change this document, including the exclusion of liability, at any time without notice and is not liable for any consequences of this change.

  • Page 71: Target Group

    Target group The different activities for handling the unit must be allocated to the target groups. The necessary personnel qualifications are subject to different legal requirements according to the application site. The owner must ensure that the applicable laws are observed. The admissible personnel and their minimum qualification are defined below insofar as this is not regulated by law.

  • Page 72: Explanation Of The Notes

    Explanation of the notes The warnings are indicated by signal words which express the degree of danger. The warnings must be heeded to avoid accidents, injuries and property damages. Explanation of the warnings in this manual: DANGER Brief description of the danger The signal word DANGER indicates an imminent danger.

  • Page 73: Marking Of Contents

    Marking of contents 1.5.1 Handling instructions Handling instructions are indicated in this manual as follows: Requirements Requirements and additional warnings Required tools and materials Tools and materials required for handling Procedure <Handling steps> … – <Intermediate result / Further instructions> …...

  • Page 74: Safety

    Safety Intended use The Pfannenberg add-on and built-in cooling units of the DTS and DTI series are stationary cooling units for heat dissipation from switch cabinets. They are available in two versions: • The DTI cooling units are installed partly sunken into the side or door.

  • Page 75: Foreseeable Misuse

    Foreseeable misuse The following points describe a foreseeable misuse of the unit: • Use of the unit as a storage place, work platform. • Attachment of transport aids. • Installation in unsuitable locations. • Outdoor operation. • Operation outside of the permissible technical data. See section "Technical data". •...

  • Page 76: Terms Of Warranty

    The following must be observed to assert warranty claims and to return the unit: • Attach a precise description of the defect and the SRO (RMA) number assigned by Pfannenberg to the cooling unit. • Enclose proof of purchase (copy of delivery note or invoice).

  • Page 77: Unit Description

    Unit description Unit structure The Pfannenberg add-on and built-in cooling units of the DTS and DTI series are designed for heat dissipation from switch cabinets. Sensitive components in the switch cabinet are protected. Condensate produced during cooling is discharged through a built-in system.

  • Page 78: Scope Of Delivery

    For safe and reliable operation, use only original parts of the manufacturer. The Pfannenberg part number for spare parts can be found in chapter "Spare parts and accessories", Page 65. An optional extension by a filter adapter for different filter mats (felt filter, pleated filter and metal filter) is available.

  • Page 79: Filter Adapter (Option)

    3.3.1 Filter adapter (option) G00052 Fig. 2: Filter adapter on the cooling unit For permanent protection of the external air circuit from contamination, the optional filter adapter (1) can be fitted with a filter mat (2) at the air inlet (3) of the cooling unit. The filter adapter (1) is simply clipped into the air inlet (3).

  • Page 80: Functional Description

    Functional description 3.4.1 Air circuit CAUTION Risk of burns Risk of burns due to high temperatures at the ambient air outlet. The air outlet can get very hot depending on the ambient temperature. • Do not hold any parts of the body directly in front of the ambient air outlet (A). G00001-01 Front view Side view...

  • Page 81: Controller

    3.4.2 Controller The controllers are control units for setting refrigeration functions and operating data. They allow readouts of system messages and diagnostic data. The controllers have a service interface at which different configurations are possible. They also have a connection for collective fault signals. G00002 Fig.

  • Page 82: Refrigeration Circuit

    3.4.3 Refrigeration circuit G00004-01 Fig. 6: Refrigeration circuit Condenser Compressor Filter dryer Electronic controller Expansion valve Display unit (SC)/control unit (MC) Evaporator Hight pressure switch Temperature sensor Condenser (external) Evaporator fan (internal) The cooling units consist of different components, see Fig. 6. •...

  • Page 83: Safety Concept

    3.4.4 Safety concept WARNING Risk of injury due to modified safety devices. Non-functional, modified or defective safety devices lead to serious accidents. • All modifications to the unit and especially the safety devices are prohibited. • In case of defective safety devices, shut down the unit immediately and take it out of operation. 3.4.4.1 Safety devices •...

  • Page 84: Condensate Treatment

    3.4.5 Condensate treatment CAUTION Danger of slipping on spilled condensate Danger of slipping on condensate spilling onto the floor from the condensate drain hose. • Collect condensate from the condensate drain hose. ATTENTION Damage to the switch cabinet components by formation of condensate Switch cabinet interior temperatures below the dew point of the ambient air or damaged switch cabinet seals can lead to excessive condensate formation.

  • Page 85: Type Plate

    The type plate is on the back of the cooling unit housing. • The figure shows the standard design adopted by EU member states. The type plate design may differ in other countries. Pfannenberg GmbH Werner-Witt-Straße 1 D-21035 Hamburg www.pfannenberg.com...
  • Page 86 Value Description Type Unit type Part number Serial number Urated Rated voltage/frequency Irated Nominal current Istart Starting current Fuse Evap. FLA / HP Evaporator fan Full Load Amps / horse power Full-load current consumption of the evaporator fan/capacity of the evaporator fan in HP Cond.

  • Page 87: Signs And Symbols On The Unit

    Signs and symbols on the unit The signs and symbols attached to the unit must be observed. The signs and symbols attached to the unit must not be removed and must be kept in a fully legible condition. Damaged or illegible signs and symbols must be replaced.

  • Page 88: Technical Data

    Technical data 3.7.1 Refrigeration circuit Designation Unit Model DTI / DTS 6201 Cooling capacity at A35 / A35 */** 1150 Cooling capacity at A50 / A35 */** Refrigerant type * – R134a Refrigerant quantity * Temperature setpoint (factory setting) °C (°F) +35 °C (95 °F) Fault indication: Switch cabinet interior temperature °C (°F)

  • Page 89: Electrical Data

    3.7.2 Electrical data Designation Unit Model DTI / DTS 6201 Rated voltage */** 50 Hz 400 V, 2~ 60 Hz 460 V, 2~ Rated frequency * 50/60 Functional area — DIN IEC 60038 Power consumption * A35 / A35 50 Hz 60 Hz Power consumption * A50 / A35 50 Hz...

  • Page 90: Dimensions

    3.7.3 Dimensions Designation Unit Model DTI / DTS 6201 Height DTI: 1537 DTS: 1540 Width Depth with cover (standard) Installation depth DTI Weight DTI: 58 DTS: 61 Installation attitude — Vertical Unit construction — Standard: Steel sheet Option: With stainless-steel cover Tab.

  • Page 91: Assembly And Initial Commissioning

    Assembly and initial commissioning Safety information DANGER Danger of fatal injury due to electric shock! Parts may be under voltage when the unit is opened and can cause an electric shock if touched. Observe the following points when working on the open unit: •...

  • Page 92: Transport

    Transport Observe the following to avoid personal injury and property damage: • Work may only be performed by qualified specialists. • Observe the safety information. WARNING Risk of injury for persons! Increased risk of injury due to improper transport. • The unit may only be transported by persons who are familiar with the procedure and aware of the risks as well as having the necessary qualifications.

  • Page 93: Transporting The Cooling Unit

    4.2.1 Transporting the cooling unit Prerequisites The cooling unit is accommodated in the factory packaging. Required tools and materials Lashing straps, if necessary loading crane Procedure Secure the unit properly for transport using lashing straps. Always transport in the operating position. Only lift the unit by its housing.

  • Page 94: Crane Transport

    4.2.2 Crane transport DANGER Danger to life due to suspended loads Tipping or falling loads can cause severe to fatal injuries. • Never stand beneath suspended loads. • Only use approved lifting gear and slings which are designed for the total weight of the attached load. •...

  • Page 95: Storage

    Storage ATTENTION Loss of warranty! Failure to observe the storage conditions will lead to loss of warranty. Note the following points for storage of the unit: • Observe the permissible storage temperature of -20 … +70 °C (-4 … +131 °F). •...

  • Page 96: Assembly

    Assembly WARNING Risk of injury! Risk of injury for persons due to the heavy weight of the units! The total weight must be observed when transporting the unit. • Observe the weight according to section "Dimensions", Page 24. • Always transport the unit with several persons or suitable lifting gear. •...

  • Page 97: Dts Cooling Unit Assembly (Side Attachment)

    4.5.2 DTS cooling unit assembly (side attachment) 4.5.2.1 Making cut-outs for DTS cooling unit G00007 Assembly holes Assembly cut-outs Fig. 10: External view of switch cabinet, assembly bores and cut-outs Holes Assembly cut-outs Device contour Requirements DANGER – Danger to life due to electric shock. Make sure that the unit is voltage-free. •...
  • Page 98 4.5.2.2 Fitting the profile seal ATTENTION Damage to the switch cabinet and the cooling unit! Incorrectly fitted seals can lead to excessive formation of condensate in the switch cabinet and thus to short-circuits and damage due to condensate. • Fit the seal so that it provides sealing against the switch cabinet. •...

  • Page 99: Assembly Of The Dti Cooling Unit (Installation)

    4.5.3 Assembly of the DTI cooling unit (Installation) 4.5.3.1 Making cut-outs for DTI cooling unit G00009 Fig. 12: External view switch cabinet, assembly cut-outs Air inlet Device contour Air outlet Assembly cut-out Prerequisites DANGER – Danger to life due to electric shock. Make sure that the unit is voltage-free. •...
  • Page 100 4.5.3.2 DTI cooling unit switch cabinet assembly (installation) G00010-01 (4A + 20 mm) Fig. 13: Assembling the cooling unit Catch spring Housing cut-out for fastening spring Fastening spring (number depends on the size: Housing cut-out for fastening spring DTI 6201 to 6501: 6×; DTI 6801: 10×) (for switch cabinets with reinforcing frame) DTI cooling unit Switch cabinet wall/switch cabinet door...
  • Page 101 Prerequisites DANGER – Danger to life due to electric shock. Make sure that the unit is voltage-free. • The cut-out for the DTI cooling unit is made, see "Making cut-outs for DTI cooling unit", Page 33. Required tools and materials •...

  • Page 102: Electrical Connection

    Electrical connection DANGER Danger of fatal injury due to electric shock! Parts may be under voltage when the unit is opened and can cause an electric shock if touched. Observe the following points when working on the open unit: • Work on the electrical system may only be carried out by authorized electricians.

  • Page 103: Electrical Circuit Diagram

    4.6.2 Electrical circuit diagram 1,2 - Störmeldung / failure indication / Türo ffen/ door open /p orteo uvert contact secd e défaut Türg eschlossen / doorc losed /p ortef ermé 4,5 - Türkontakt/ door contact / contact de porte TK TK 1 2 3 4 GNYE DIP-Switch...

  • Page 104: Connection Compartment

    4.6.3 Connection compartment G00083 Fig. 15: Connection compartment Cover plate Terminal strip mains connection Screws (2×) for cover plate Terminal strip multimaster control (only for MC-Controller) Grounding connection for cover plate Terminal strip fault indication/door contact Cable tie eyes for strain relief Service interface F2/F3 Control voltage fuse...

  • Page 105: Setting The Dip-Switch

    4.6.4 Setting the DIP-switch OFF 1 G00011-01 Fig. 16: Setting the DIP-switch Fastening screws (card cage) Card cage Controller DIP-switch The DIP-switch on the controller facilitates the setting of the target and limit values for temperatures. The default factory setting of the values in the delivery condition is as follows: Parameters Factory setting Setpoint of the switch cabinet temperature...
  • Page 106 4.6.4.2 DIP-switch setting possibilities NOTE The cooling unit carries voltage if the red LED light on the controller is flashing. Always make sure that there is no voltage on the unit before carrying out any work on the electrical connections. DIP-switch Temperatures in °C Temperatures in °F...

  • Page 107: Door Contact Switch

    4.6.5 Door contact switch ATTENTION Damage to the unit! Damage to the unit and the controller by applying external voltage to the door contact input. • Do not apply external voltage to the door contact input. • The door contact input provides a low voltage (< 20 V, 20 mA) for the door contact switch. Fitting a door contact switch increases safety and prevents increased condensate formation.

  • Page 108: Collective Fault Signal

    4.6.6 Collective fault signal The unit is equipped with a potential-free changeover contact for the collective fault signal. Three connections are provided for connecting the collective fault signal. The terminals are marked with the device tag 4.6.6.1 Connecting the collective fault signal Prerequisites DANGER –...

  • Page 109: Mains Connection

    4.6.7 Mains connection DANGER Danger of fatal injury due to electric shock! Unconnected or incorrectly installed protective conductor systems can generate hazardous voltages and cause electrical shocks resulting in serious accidents. • Work may only be carried out by qualified specialists. •...
  • Page 110 4.6.7.1 Electrical connection of the cooling unit The device corresponds to overvoltage category II. Fulfill the following general requirements to ensure safe and reliable operation of the cooling unit: • Connection of an upstream temperature control on the feed side is prohibited. •...

  • Page 111: Adapting The Unit To The Mains Voltage

    4.6.8 Adapting the unit to the mains voltage Fig. 20: Adapting the mains voltage Mating plug Control fuse F2 Cable Control fuse F3 Units with a mains voltage of 400/460 V can be connected optionally to another mains voltage. • The adaptation is made by selecting the appropriate terminal on the mains plug X50.

  • Page 112: Equipotential Bonding Connections And Fuses

    4.6.9 Equipotential bonding connections and fuses Functional equipotential bonding (M8-thread), for a signal reception with low interference between the unit and the switch cabinet. Fuses (F2, F3) for transformer as protection against fault current, overload current and short-circuit current. G00014-01 Fig.

  • Page 113: Operation

    Operation General functions ATTENTION Damage to the unit Operation without the unit cover prevents sufficient air supply to the condenser and restricts the intended cooling function. • Only operate the cooling unit with the unit cover in place. G00015 Fig. 22: Electronic control function The Standard-Controller (SC) has an indicator unit with a green LED light (1).

  • Page 114: Operation Of The Cooling Unit

    Only the specified refrigerant may be used. NOTE For the Pfannenberg part numbers for spare parts, see section "Spare parts and accessories", Page 65. Operating Manual | Attachment and Installation Cooling Units | Standard Controller (SC) – 400 V, 2~ | 086100115...

  • Page 115: Service Interface

    Service interface G00087 Fig. 23: Service interface Service interface on the controller USB adapter The service interface enables operating parameters to be changed. • A USB adapter and the configuration software ECoolPLANT 2.X, including the USB driver software are required for this. •...

  • Page 116: Service And Maintenance

    Service and maintenance Safety information DANGER Danger of fatal injury due to electric shock! Parts may be under voltage when the unit is opened and can cause an electric shock if touched. Observe the following points when working on the open unit: •...

  • Page 117: General

    A shorter guide value of two to six months applies between the maintenance intervals. • The functions of the Pfannenberg filters are optimally adapted to the cooling units. Therefore, the use of Pfannenberg filters has positive effects on the scope of the maintenance work.

  • Page 118: Maintenance Schedule

    Maintenance schedule Maintenance interval: Perform every twelve months. Every two to six months, in ambient air containing oil and dust. Type: ______________________________________________________________________ Serial number: ______________________________________________________________________ Date of maintenance: ______________________________________________________________________ Executing specialist (name): ______________________________________________________________________ Unit area designation / Visual To do Result necessary maintenance work inspection...

  • Page 119: Maintenance Work

    Maintenance work 6.4.1 Cleaning WARNING Danger of accident and component damage Danger of accident and component damage due to improper cleaning. Cleaning the cooling units using water jets, steam jet cleaners or high-pressure cleaners or sharp objects may damage the electrical and electronic components.
  • Page 120 6.4.1.1 Removing/assembling the unit cover CAUTION Danger of crushing when removing/assembling the unit cover Hands and other body parts may be crushed when removing and reinserting the unit cover. • Do not place any body parts between the frame, springs and the unit cut-out. •...
  • Page 121 Assembling the unit cover Prerequisite DANGER – Danger to life due to electric shock. Make sure that the unit is voltage-free. Wait for a discharge phase of 10 minutes for the electrical components. The unit should only be opened afterwards. Procedure Plug the earthing cable (3) into the inside of the unit cover (2).
  • Page 122 6.4.1.2 Cleaning the heat exchanger ATTENTION Damage to components Damage to the heat exchanger fins due to incorrect cleaning. • Clean the heat exchanger fins with a soft brush, compressed air or a vacuum cleaner with a brush attachment. NOTE The time intervals for cleaning depend strongly on the contamination of the ambient air.
  • Page 123 6.4.1.3 Cleaning filter mats ATTENTION Damage to components Damage to the filter mats due to improper cleaning. • Avoid high-pressure water jets. • Do not wring out filter mats. • Replace oily or greasy filter mats immediately. NOTE The time intervals for cleaning or replacing the filter mats depend strongly on the contamination of the ambient air. Requirements •...

  • Page 124: Rectification Of Operating Faults

    Rectification of operating faults General NOTE Flashing of the red LED light on the controller card is not a fault indication or error message. The red LED light indicates that the cooling unit is carrying voltage. Fault Possible causes Remedial measures Unit does not cool, evaporator fan Temperature setting too high.

  • Page 125: Error Messages

    7.1.1 Error messages The error numbers are not displayed in units with Standard Controllers. Using the ECoolPLANT software, it is possible to read out the error numbers on the computer. NOTE Flashing of the red LED light on the controller card is not a fault indication or error message. The red LED light indicates that the cooling unit is carrying voltage.
  • Page 126 Error no. Fault/unit behavior Possible causes Remedial measures Er08 LED: flashes Sensor 2 (TS2) defective. Replace sensor 2 according to the unit type. Compressor: Sensor 2 is plugged to the Evaporator fan (internal): card, not permanently soldered. Condenser fan (external): Fault signal contact:: Open Antifreeze (option):...

  • Page 127: Decommissioning

    Page 62! NOTE Old units are also professionally disposed of by Pfannenberg. Delivery to one of our manufacturing facilities shall be free of charge. Operating Manual | Attachment and Installation Cooling Units | Standard Controller (SC) – 400 V, 2~ | 086100115...

  • Page 128: Dismantling And Disposal

    They must be taken to a separate electrical and electronic waste collection depot. For further information about disposal, scan the QR code or call www.pfannenberg.com/disposal. Safety information All work may only be performed by persons with certified qualifications under consideration of: •...

  • Page 129: Dismantling

    ATTENTION Hazards for the environment Refrigerants are harmful to the environment as soon as they escape into the atmosphere. • Only have work on the refrigeration unit carried out by experts in accordance with the chemicals climate protection directive. • Do not damage refrigerant lines.

  • Page 130: Disposal

    Disposal NOTE Old units are also professionally disposed of by Pfannenberg. Delivery to one of our manufacturing facilities shall be free of charge. Dismantled components should be recycled unless return or disposal agreements have been made: • Scrap metals •...

  • Page 131: 10 Spare Parts And Accessories

    10 Spare parts and accessories NOTE • Always state the Pfannenberg part number when ordering spare parts and accessories. • The Pfannenberg part number for the controller is on the controller transformer. Designation Designation 18811100065 Evaporator fan (internal) 18811100065 Condenser fan (external)

  • Page 132: 11 Index

    11 Index Functional description About this document Air circuit ..............14 Handling instructions ............. 7 Fuses ................47 Accessories ..............66 Adapting the mains voltage ..........46 Mains connection ............44 Assembly Maintenance schedule............ 53 DTI cooling unit (installation) ........34 Maintenance work ............
  • Page 133 Operating Manual | Attachment and Installation Cooling Units | Standard Controller (SC) – 400 V, 2~ | 086100115 67/68...
  • Page 134 All the contained information has been carefully checked. However, we shall assume no liability with regard to the completeness and accuracy of the information. Company details: Pfannenberg GmbH Werner-Witt-Strasse 1 21035 Hamburg Tel. +49 40 734 12-0 www.pfannenberg.com © Pfannenberg 2022...

This manual is also suitable for:

Dti seriesDts 6201Dti 6201Dts 6301Dti 6301

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