KKT chillers nBoxX 1.5 Operating Instruction
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KKT chillers nBoxX 1.5 Operating Instruction

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Operating Instruction
nBoxX 1.5
nBoxX 3.0
nBoxX 4.5
nBoxX 6.0

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Summary of Contents for KKT chillers nBoxX 1.5

  • Page 1 Nano Nano Nano Nano- - - - Line Line Line Line Operating Instruction nBoxX 1.5 nBoxX 3.0 nBoxX 4.5 nBoxX 6.0...

  • Page 2: Table Of Contents

    Content Content Content Content Notes on documentation ..................4 Other applicable documents ........................4 CE conformity .............................. 4 Storing the documents ..........................4 Symbols used .............................. 4 Safety instructions ....................5 Risks in case of failure to observe the safety instructions ............... 5 Safety instructions for the operator ......................
  • Page 3 Fixed value control or combined control ....................22 Meaning of the control parameters ......................23 Meaning of the error codes ........................27 Alarm relay contacts ..........................29 PLC outputs .............................. 30 Setting the digital real-time clock ......................31 Inspection and maintenance ................32 Maintaining the refrigerant circuit ......................

  • Page 4: Notes On Documentation

    1 1 1 1 Notes on documentation Notes on documentation Notes on documentation Notes on documentation These instructions are aimed at installers and operators who are familiar with the installation and the operation of the cooling unit. Thereby it is imperative that you observe the following: You must read and observe these operating instructions prior to commissioning.

  • Page 5: Safety Instructions

    Caution! Caution! Caution! Caution! Possible hazard due to discharge of refrigerant. Possible hazard due to discharge of refrigerant. Possible hazard due to discharge of refrigerant. Possible hazard due to discharge of refrigerant. Note! Note! Note! Note! Useful information and special features. Useful information and special features.

  • Page 6: Unauthorised Operation

    Caution! Caution! Caution! Caution! Possible hazard for the cooling unit. Possible hazard for the cooling unit. Possible hazard for the cooling unit. Possible hazard for the cooling unit. Do not install the unit without protection outside of covered areas, or in an explosive or aggressive environment.
  • Page 7 Fig. 1 nBoxX1.5 View from front (left) and rear (right) Key to figures 1 Key to figures 1 Key to figures 1 Key to figures 1 Rating plate Display Louvered grille for air inlet Louvered grille for air outlet Cable entry Cooling medium inlet Tank drain nozzle for maintenance, transportation and disposal of the cooling medium Cooling medium return...
  • Page 8 Fig. 3 nBoxX6.0 View from front (left) and from rear (right) Key to figures 2 and 3 Key to figures 2 and 3 Key to figures 2 and 3 Key to figures 2 and 3 Louvered grille for air outlet (two-part) Display Liquid level display of cooling medium Tank filling nozzle for cooling medium...

  • Page 9: General Functional Description

    3.1 General functional description General functional description General functional description General functional description " " & Fig. 4 Refrigerant circuit (schematic diagram: example, units with open refrigerant circuit) The cooling system comprises the four main components: evaporator (12 12), compressor (13 13), con- denser (1 1 1 1 ) with fan (2 2 2 2 ) as well as the control or expansion valve (4 4 4 4 ), which are connected together by pipes.

  • Page 10: Controller

    3.1.1 3.1.1 Controller 3.1.1 3.1.1 Controller Controller Controller The cooling units are fitted with a controller for setting the functions of the cooling unit. Operating states are displayed using a display unit and parameters can be set using buttons. 3.1.2 Safety devices 3.1.2 Safety devices 3.1.2...

  • Page 11: Transportation

    Only transport the unit in an upright position. • Fig. 5 Eyebolt for transportation (nBoxX 1.5 shown here as an example) Only transport the unit on the pallet supplied with the unit or with the eyebolt provided (1). Prevent excessive vibration. If it is necessary to move the unit in the factory, you must disconnect all connections on the unit.

  • Page 12: Assembly And Connection

    5 5 5 5 Assembly and connection Assembly and connection Assembly and connection Assembly and connection 5.1 I I I I nstallation site requirements nstallation site requirements nstallation site requirements nstallation site requirements The site must be free from excessive dirt and moisture. The ambient temperature must not exceed 43°C.

  • Page 13: Installing The Cooling Unit

    The connection of ducts for fresh and exhaust air to our devices is not suitable, as these units are equipped with axial fans and these cannot build up the necessary additional air pressure. To prevent performance losses, do not install the cooling unit near any form of heating. Outdoor siting: Cooling units must be installed such that they cannot become damaged by internal traffic and transport operations.

  • Page 14: Making Electrical Connection

    Caution! Caution! Caution! Caution! Risk of damage for the cooling medium pump due to dry running! If it is possible to Risk of damage for the cooling medium pump due to dry running! If it is possible to Risk of damage for the cooling medium pump due to dry running! If it is possible to Risk of damage for the cooling medium pump due to dry running! If it is possible to shut off the circuit to the equipment to be cooled, you must inst shut off the circuit to the equipment to be cooled, you must inst...

  • Page 15: Connecting The Alarm Relay Interrogation Device

    5.4.2 Connecting the alarm relay interrogation device 5.4.2 Connecting the alarm relay interrogation device 5.4.2 5.4.2 Connecting the alarm relay interrogation device Connecting the alarm relay interrogation device You can also query fault messages with two floating contacts on a separate connection clamp of the cooling unit.
  • Page 16 For types nBoxX3.0, nBoxX4.5 and nBoxX6.0 For types nBoxX3.0, nBoxX4.5 and nBoxX6.0 For types nBoxX3.0, nBoxX4.5 and nBoxX6.0 For types nBoxX3.0, nBoxX4.5 and nBoxX6.0 Fig. 8 PLC connection for types nBoxX3.0 and nBoxX4.5 • Remove the louvered grille (3 3 3 3 ) on the rear of the cooling unit. •...

  • Page 17: Commissioning

    Fig. 10 Assignment of PLC contacts 6 6 6 6 Commissioning Commissioning Commissioning Commissioning The cooling unit does not have its own main switch to switch the cooling unit on and off. It must be switched on and off by the higher-level controller. 6.1 Antifreeze Antifreeze Antifreeze...

  • Page 18: 6.3 Bleeding The Cooling Medium Pump

    6.3 Bleeding the cooling medium pump Bleeding the cooling medium pump Bleeding the cooling medium pump Bleeding the cooling medium pump Bleed the pipes and top-up the cooling medium. For types nBoxX1.5 only: For types nBoxX1.5 only: For types nBoxX1.5 only: For types nBoxX1.5 only: The cooling medium pump fills by itself and does not need to be bled.

  • Page 19: Operation

    7 7 7 7 Operation Operation Operation Operation The cooling unit is switched on and off by the higher-level control. It operates automatically, i.e. the cooling medium is pumped continuously and heat extracted from it during this process. A controller provides automatic control based on the hysteresis set.

  • Page 20: Key Functions

    7.2 Key functions Key functions Key functions Key functions You can use the control keys to change control parameters within the assigned ranges (min. to max. value). Tab. 1 in section 7.4 shows the parameters that may be set. The function of the control changes depending on which control level you are on.

  • Page 21: Key Functions During Parameter Adjustment

    7.2.2 7.2.2 Key functions during parameter adjustment 7.2.2 7.2.2 Key functions during parameter adjustment Key functions during parameter adjustment Key functions during parameter adjustment Parameter adjustment is cancelled if you do not press any key for about 30 minutes. When this hap- pens, any value in the process of being changed will not be saved! The indicators will then show normal operating values again (actual temperature of the cooling medium or the error code).

  • Page 22: Fixed Value Control Or Combined Control

    Example: Change unit in the temperature display Example: Change unit in the temperature display Example: Change unit in the temperature display Example: Change unit in the temperature display You can have temperature values displayed in degrees Celsius or Fahrenheit. To change the display unit, proceed as follows: Press both keys and hold for about 5 seconds.

  • Page 23: Meaning Of The Control Parameters

    7.4 Meaning of the control parameters Meaning of the control parameters Meaning of the control parameters Meaning of the control parameters Parameter Parameter Min. value Min. value Max. value Max. value Factory setting Factory setting Setting Setting Explanation Explanation Parameter Parameter Min.
  • Page 24 Parameter Parameter Parameter Parameter Min. value Min. value Min. value Min. value Max. value Max. value Max. value Max. value Factory Factory setting Factory Factory setting setting setting Setting Setting Setting Setting Explanation Explanation Explanation Explanation (password protection) number 123 must be set. 24 / 48 83000902.Ka...
  • Page 25 Parameter Parameter Parameter Parameter Min. value Min. value Min. value Min. value Max. value Max. value Max. value Max. value Factory Factory setting Factory Factory setting setting setting Setting Setting Setting Setting Explanation Explanation Explanation Explanation Ct: Combined control Control mode Ft: Fixed value control Heater function...
  • Page 26 Parameter Parameter Parameter Parameter Min. value Min. value Min. value Min. value Max. value Max. value Max. value Max. value Factory Factory setting Factory Factory setting setting setting Setting Setting Setting Setting Explanation Explanation Explanation Explanation If this function is activated (ON), the error messages also appear on the Acknowledgement error...

  • Page 27: Meaning Of The Error Codes

    7.5 Meaning of the error codes Meaning of the error codes Meaning of the error codes Meaning of the error codes If errors occur during operation, they will appear cyclically as error codes with the cooling medium temperature: The format of this display is as follows: e.g. F.01 alternating with t1. Error messages that occur are saved in the controller's error memory.
  • Page 28 Error Error Error Error Meaning Meaning Meaning Meaning Alarm Alarm Alarm Alarm Alarm relay Alarm relay Alarm relay Alarm relay Assigned Assigned Assigned Assigned Cause Cause Cause Cause Remedy Remedy Remedy Remedy reset reset reset reset setting setting setting setting PLC output PLC output PLC output...

  • Page 29: Alarm Relay Contacts

    Error Error Error Error Meaning Meaning Meaning Meaning Alarm Alarm Alarm Alarm Alarm relay Alarm relay Alarm relay Alarm relay Assigned Assigned Assigned Assigned Cause Cause Cause Cause Remedy Remedy Remedy Remedy reset reset reset reset setting setting setting setting PLC output PLC output PLC output...

  • Page 30: Plc Outputs

    Key: Key: Key: Key: Compressor and fan OFF Cooling off Pump ON System off Pump, compressor, fan OFF 7.7 PLC outputs PLC outputs PLC outputs PLC outputs The meanings of the settings for the PLC outputs are as follows: 24V DC ext.

  • Page 31: Setting The Digital Real-Time Clock

    7.8 Setting the digital real Setting the digital real- - - - time clock time clock Setting the digital real Setting the digital real time clock time clock The m m m m icro c c c c ontroller b b b b ox is fitted with an integral real-time clock. The current time can be set in menu P9 under "Time".

  • Page 32: Inspection And Maintenance

    8 8 8 8 Inspection and maintenance Inspection and maintenance Inspection and maintenance Inspection and maintenance Inspection and maintenance Inspection and maintenance Inspection and maintenance Inspection and maintenance Proper, regular inspections and maintenance (once a year is recommended) and usage of original regular inspections and maintenance (once a year is recommended) and usage of original regular inspections and maintenance (once a year is recommended) and usage of original spare parts only are crucial for problem...

  • Page 33: Maintaining The Refrigerant Circuit

    8.1 Maintaining the refrigerant circuit Maintaining the refrigerant circuit Maintaining the refrigerant circuit Maintaining the refrigerant circuit As a hermetically sealed system, the refrigerant circuit has been filled in the factory with the required amount of refrigerant, tested for leaks and subjected to a function test run. Maintenance tasks on the refrigerant circuit must only be undertaken by a specialist refrigeration company.
  • Page 34 The manufacturer's guarantee and liability will be rendered void in cases of incorrect use and treat- ment of the cooling unit. To prevent problems in the coolant/heat transfer circuit (also on water- cooled units), it is imperative that the VEB Cooling Water Guidelines (VGB-R 455 P) are observed (for source, see chapter 12).
  • Page 35 If necessary, improve the quality as described above. If you have any questions about this, please contact our service department. The accordant refractometer to fill in the right mixture is available as a spare part at the KKT chillers service.

  • Page 36: Cleaning The Condenser

    Note! Note! Note! Note! Condensation may occur in the system if the cooling unit is run at particular physical Condensation may occur in the system if the cooling unit is run at particular physical Condensation may occur in the system if the cooling unit is run at particular physical operating parameters.

  • Page 37: Cleaning The Filter Mat (Optional)

    Ambient air containing oil: Ambient air containing oil: Ambient air containing oil: Ambient air containing oil: Ambient air containing oil in conjunction with dust will result in inc air containing oil in conjunction with dust will result in increased soiling of the condenser reased soiling of the condenser fins.

  • Page 38: Troubleshooting

    9 9 9 9 Troubleshooting Troubleshooting Troubleshooting Troubleshooting In operation, the cooling unit operates in a safe state. The cooling system maintains the cooling me- dium feed temperature at the set the set point. Possible causes for deviation from the set point could be: Cooling demand too high, see chapter 11 •...

  • Page 39: Shutting Down And Disposal

    10.2 10.2 Shutting down and disposal Shutting down and disposal Shutting down and disposal Shutting down and disposal 10.2 10.2 Shutting down and disposal Shutting down and disposal Shutting down and disposal Shutting down and disposal Attention, risk for the environment! Intentional release of the refrigerant is strictly Attention, risk for the environment! Intentional release of the refrigerant is strictly Attention, risk for the environment! Intentional release of the refrigerant is strictly prohibited.

  • Page 40: 11 Manufacturer's Guarantee And Customer Service

    Within the scope of its guarantee, KKT chillers will bear all costs connected with dispatching, deploy- ing and accommodating its staff and with replacing or repairing any parts, provided the malfunction occurred during the proper usage of the products and provided the costs are not increased by the movement of the products to a place other than that where they were originally delivered.
  • Page 41 Not included in the guarantee are: Not included in the guarantee are: Not included in the guarantee are: Not included in the guarantee are: Measures to rectify malfunctions caused by operating errors, other improper handling, techni- • cal changes on the part of the customer or third parties or other effects for which KKT is not responsible;...

  • Page 42: Annex

    12 Annex Annex Annex Annex 42 / 48 83000902.Ka...
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  • Page 48 KKT chillers contact: a brand of ait deutschland GmbH Industriestraße 3 95359 Kasendorf Germany T +49 9228 9977 0 F +49 9228 9977 149 E info@kkt-chillers.com W www.kkt-chillers.com Service T +49 9228 9977 7190 F +49 9228 9977 149 E service@kkt-chillers.com Service Center USA KKT chillers, Inc.

This manual is also suitable for:

Nboxx 4.5Nboxx 3.0Nboxx 6.0

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