Pfannenberg DTI Series Operating Manual
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Summary of Contents for Pfannenberg DTI Series
- Page 1 Operating Manual Attachment and Installation Cooling Units DTS and DTI Series 6801 Standard Controller (SC) – 400 / 460 V, 3~ Original instruction manual – Version 1.0, February 2022...
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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 ................................29 4.5.1 General ................................29 4.5.2 DTS cooling unit assembly (side attachment) ..................... 30 4.5.3 Assembly of the DTI cooling unit (Installation) ....................32 Electrical connection ............................... 35 4.6.1 Notes for connecting cables to the unit....................... 35 4.6.2 Electrical circuit diagram ............................ 36 4.6.3 Connection compartment ...........................
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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.
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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 6801 Cooling capacity at A35 / A35 */** 4000 Cooling capacity at A50 / A35 */** 3150 Refrigerant type * – R134a Refrigerant quantity * 1200 Temperature setpoint (factory setting) °C (°F) +35 °C (95 °F) Fault indication: Switch cabinet interior temperature... -
Page 23: Dimensions
3.7.3 Dimensions Designation Unit Model DTI / DTS 6801 Height DTI: 1540 DTS: 1548 Width Depth with cover (standard) Installation depth DTI Weight DTI: 90 DTS: 94 Installation attitude — Vertical Unit construction — Standard: Steel sheet Option: With stainless-steel cover Tab. -
Page 24: 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 25: 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 26: 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 27: 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 28: 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 29: 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 23. • Always transport the unit with several persons or suitable lifting gear. •... -
Page 30: 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 G00053 Assembly holes Assembly cut-outs Fig. 10: External view of switch cabinet, assembly holes 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 31 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. •...
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Page 32: 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 33 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 34 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 32. Required tools and materials •...
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Page 35: 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 36: Electrical Circuit Diagram
4.6.2 Electrical circuit diagram 1,2 - Störmeldung / failure indication / Tür offen / door open / porte ouvert 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 DIP-Switch... -
Page 37: Connection Compartment
4.6.3 Connection compartment G00077 Fig. 15: Connection compartment Cover plate Terminal strip mains connection Screws (2×) for cover plate Terminal strip multimaster control (only for MC-Controller) Plug-in bridges for mains voltage adaptation Terminal strip fault indication/door contact Grounding connection for cover plate Service interface Cable tie eyes for strain relief Control voltage fuse... -
Page 38: 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 39 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...
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Page 40: 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 41: 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 42: 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 43 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. •...
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Page 44: Adapting The Unit To The Mains Voltage
4.6.8 Adapting the unit to the mains voltage G00013-01 Fig. 20: Adapting the mains voltage Plug-in bridge for mains voltage adaptation Control fuse F2 Control fuse F3 Units with a mains voltage of 400/460 V can be connected optionally to another mains voltage. •... -
Page 45: 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 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. 22: 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) – 400 / 460 V, 3~ | 086100125... -
Page 48: Service Interface
Service interface G00078 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 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 •...
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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):...
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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) – 400 / 460 V, 3~ | 086100125... -
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 18811100069 Evaporator fan (internal) 18811100069 Condenser fan (external) -
Page 65: 11 Index
11 Index Functional description About this document Air circuit ..............14 Handling instructions ............. 7 Fuses ................46 Accessories ..............65 Adapting the mains voltage ..........45 Mains connection ............43 Assembly Maintenance schedule............ 52 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...
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