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Marksa CSO Series Technical Notice

Industrial refrigeration units
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TECHNICAL NOTICE CSO/CPO
V1.1 - 10.14
I
NDUSTRIAL REFRIGERATION UNITS

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Do you have a question about the CSO Series and is the answer not in the manual?

Questions and answers

Torben Holmelund
June 30, 2025

We have this Emrksa sa cpo1010-gc-pl machine left. The power consumption is 4,5 kw (on nameplate) how much cooling effect can we expect when the inlet is 25-27 degre? Is it usefull to cool water/glycol (30%)?

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Summary of Contents for Marksa CSO Series

  • Page 1 TECHNICAL NOTICE CSO/CPO V1.1 - 10.14 NDUSTRIAL REFRIGERATION UNITS...
  • Page 2 (photocopy, photography, magnetic supports or other re- cording processes), without the written authorization of Marksa SA. All rights and particularly reproduction, transla- tion, edition, distribution and also industrial property and recording are reserved.

  • Page 3: Table Of Contents

    Table of contents Introduction ........................7 Foreword ............................7 Typographical conventions ....................... 8 1.2.1 Description ......................... 8 1.2.2 Command........................... 8 1.2.3 Procedure........................... 8 1.2.4 Cross reference........................8 1.2.5 List of items ........................8 1.2.6 Troubleshooting........................9 1.2.7 Warnings ..........................9 1.2.8 Recommendation and Note....................
  • Page 4 Table of contents CSO 500/800 models ....................25 Description ............................25 5.1.1 Front view ......................... 25 5.1.2 Rear view ......................... 26 5.1.3 Technical specifications....................27 Handling ............................29 Installation ............................29 5.3.1 Hydraulic connections ...................... 29 5.3.2 Electrical connections....................... 29 Commissioning ..........................
  • Page 5 Table of contents Tuning and maintenance..................... 43 Tunings ............................43 8.1.1 Thermostat ........................43 Maintenance ........................... 45 8.2.1 Periodic maintenance....................... 45 8.2.2 Safety ..........................45 8.2.3 Maintenance table ......................45 8.2.4 Weekly maintenance ......................45 8.2.5 Monthly maintenance ....................... 45 8.2.6 Annual maintenance......................
  • Page 6 Table of contents 11 Appendix ........................83 11.1 Compliance ............................. 83 11.1.1 Directives.......................... 83 11.1.2 Identification plate ......................83 11.2 Disposal of the product ........................84 11.2.1 General remarks....................... 84 11.2.2 Preparation ........................84 11.3 Technical file ........................... 84 11.4 Maintenance sheet ......................... 85 11.5 Compliance certificat ........................

  • Page 7: Introduction 1

    Foreword This manual is intended for all users of a Marksa refrigeration unit. It contains all the information ne- cessary for installation, commissioning, periodic maintenance and repair. This manual was compiled by the Marksa SA company with the same care as your refrigeration unit and is therefore an inseparable component.

  • Page 8: Typographical Conventions

    1 Introduction Typographical conventions The following styles are used in this manual. 1.2.1 Description This style, used in conjunction with illustration numbers, is preceded with the corresponding numbers: Example First element Second element Etc. 1.2.2 Command Any software command, button, function key, window, icon, option, tab, checkbox, selection box, article, menu, tool bar, field and section used in this document is represented by a bold italic font.

  • Page 9: Troubleshooting

    Introduction 1 1.2.6 Troubleshooting The complete description, as well as the error message, the explanation and the remedy, appear as follows: Problem Explanation, possible cause ✔ Remedy 1.2.7 Warnings Depending on the importance of the warning and the associated risks, five warning styles are defined. The "Danger", "Warning"...

  • Page 10: Recommendation And Note

    1.2.8.1 Recommendation The recommendation is used to designate a preferable procedure or a recommended usage.  Marksa SA declines any responsibility in case of non-respect of recommendations. Example Make sure the device is closed before starting it.

  • Page 11: Generalities 2

    Generalities 2 Chapter contents This chapter contains generic information applicable to all refrigeration unit models. In particular, it contains instructions concerning safety as well as practical and theoretical information. Appropriate usage The refrigeration unit is intended to be used to maintain the ambient temperature of a machine tool. It can be used only by trained and authorised personnel.

  • Page 12: Graphic Symbols

    2 Generalities 2.2.3 Graphic symbols The following symbols may be present on your refrigeration unit: Symbol Description  Risk of electrocution  Risk of burns Table 2-1: Symbols Page 12 / 86 Technical Notice CSO/CPO V1.1 / 10.14...

  • Page 13: Cso/Cpo Principles Of Operation

    Generalities 2 CSO/CPO principles of operation The range of CSO/CPO chillers supplies chilled oil (10) continuously at a constant temperature. The chilling is accomplished in the following manner: An HFC refrigerant of either R134A (tetrafluoroethane) or R407C types is compressed (5) and then chilled in an air condenser (8). A pressure regulator (16) causes a drop in pressure which leads to a drop in temperature.

  • Page 14: Models And Available Options

    2 Generalities Models and available options The CSO and CPO range of industrial oil chillers covers several models classified according to their ca- pacities and available options. On CPO models a pump can be added directly as an option in the unit, as well as a cleanable exchanger. 2.4.1 List of models The following models are currently available:...

  • Page 15: Cpo 140 Model 3

    CPO 140 model 3 Chapter contents This chapter contains information specific to the CPO 140 model. It covers all topics associated with ins- tallation, commissioning, tuning and maintenance of this model. Description 3.1.1 Front view Fig. 3-1 : CPO 140 type chiller Thermostat display Visual failure indicator (red) Main power switch...

  • Page 16: Technical Specifications

    3 CPO 140 model 3.1.2 Technical specifications 3.1.2.1 Standard operating parameters Description Unit CPO 140 Refrigerant Type R134A Refrigerating capacity Power consumption Heat load Inlet temperature °C Outlet temperature °C Max. input temperature °C 38°C 3.1.2.2 Electrical data Description Unit CPO 140 Power input Maximum amperage...
  • Page 17 CPO 140 model 3 3.1.2.5 Hydraulic circuit Description Unit CPO 140 Min. flow rate l/min 12.5 Inlet/outlet coupling diameter 3/4” 3.1.2.6 Dimensions Description Unit CPO 140 Width Height Depth Weight 3.1.2.7 Other characteristics Description Unit CPO 140 Standard colour Stainless steel Sound rating...

  • Page 18: Handling

    3 CPO 140 model Handling The unit must be transported flat and must not sustain any shocks. Installation The unit is normally installed close to the machine being cooled, as indicated on the installation plans. During the installation, allow for a free space of about 0.5 m around the refrigeration unit.

  • Page 19: Cpo 310 - Cso 300 Models 4

    CPO 310 - CSO 300 models 4 Chapter contents This chapter contains information specific to the CPO 310 and CSO 300 models. It covers all topics as- sociated with installation, commissioning, tuning and maintenance of these models. For reasons of clarity, only the CPO 310 model is described in the current chapter. However, all of the explanations apply in a similar fashion to the CSO 300 model.

  • Page 20: Rear View

    4 CPO 310 - CSO 300 models 4.1.2 Rear view Fig. 4-2 : CPO 310 type chiller - (rear view) Cooling liquid outlet Cooling liquid return inlet Electric power connector Page 20 / 86 Technical Notice CSO/CPO V1.1 / 10.14...

  • Page 21: Technical Specifications

    CPO 310 - CSO 300 models 4 4.1.3 Technical specifications 4.1.3.1 Standard operating parameters Description Unit CPO 310 CSO 300 Refrigerant Type R134A R134A Refrigerating capacity Power consumption 1.355 1.355 Heat load 4.355 4.355 Inlet temperature °C Outlet temperature °C Max.
  • Page 22 4 CPO 310 - CSO 300 models 4.1.3.5 Hydraulic circuit Description Unit CPO 310 CSO 300 Min. flow rate l/min Inlet/outlet coupling diameter 3/4” 3/4” 4.1.3.6 Dimensions Description Unit CPO 310 CSO 300 Width Height Depth Weight 4.1.3.7 Other characteristics Description Unit CPO 310...

  • Page 23: Handling

    CPO 310 - CSO 300 models 4 Handling The unit must be transported flat and must not sustain any shocks. Installation The unit is normally installed close to the machine being cooled, as indicated on the installation plans. During the installation, allow for a free space of about 0.5 m around the refrigeration unit. This distance must be 1 m in front of the exhaust fan.

  • Page 24: Commissioning

    4 CPO 310 - CSO 300 models Commissioning The unit has been checked, tuned and tested in our workshops. Make the hydraulic and electrical connections. Make sure the oil circulates in the unit. Start up the unit (1). Check the rotation direction of the exhaust fan and the pump, if available (option C).

  • Page 25: Cso 500/800 Models 5

    CSO 500/800 models 5 Chapter contents This chapter contains information specific to the CSO 500 and CSO 800 models. It covers all topics as- sociated with installation, commissioning, tuning and maintenance of these models. For reasons of clarity, only the CPO 500 model is described in the current chapter. However, all of the explanations apply in a similar fashion to the CSO 800 model.

  • Page 26: Rear View

    5 CSO 500/800 models 5.1.2 Rear view Fig. 5-2 : CSO 500 type chiller (inner view) Safety pressure controllers (LP/HP) Cooling liquid outlet Cooling liquid return inlet Page 26 / 86 Technical Notice CSO/CPO V1.1 / 10.14...

  • Page 27: Technical Specifications

    CSO 500/800 models 5 5.1.3 Technical specifications 5.1.3.1 Standard operating parameters Description Unit CSO 500 CSO 800 Refrigerant Type R407C R407C Refrigerating capacity Power consumption Heat load Inlet temperature °C Outlet temperature °C Max. input temperature °C 38°C 38°C 5.1.3.2 Electrical data Description Unit CSO 500...
  • Page 28 5 CSO 500/800 models 5.1.3.5 Hydraulic circuit Description Unit CSO 500 CSO 800 Min. flow rate l/min Inlet/outlet coupling diameter 1” 1” 5.1.3.6 Dimensions Description Unit CSO 500 CSO 800 Width Height Depth Weight 5.1.3.7 Other characteristics Description Unit CSO 500 CSO 800 Standard colour ral 7035...

  • Page 29: Handling

    CSO 500/800 models 5 Handling The unit must be transported flat and must not sustain any shocks. Installation The unit is normally installed close to the machine being cooled, as indicated on the installation plans. During the installation, allow for a free space of about 0.5 m around the refrigeration unit. This distance must be 1 m in front of the exhaust fan.

  • Page 30: Commissioning

    5 CSO 500/800 models Commissioning The unit has been checked, tuned and tested in our workshops. Make the hydraulic and electrical connections. Make sure the oil circulates in the unit. Start up the unit (1). Check the rotation direction of the exhaust fan and the pump, if available (option C).

  • Page 31: Cpo 510/810 Models 6

    CPO 510/810 models 6 Chapter contents This chapter contains information specific to the CPO 510 and CPO 810 models. It covers all topics as- sociated with installation, commissioning, tuning and maintenance of these models. For reasons of clarity, only the CPO 510 model is described in the current chapter. However, all of the explanations apply in a similar fashion to the CPO 810 model.

  • Page 32: Rear View

    6 CPO 510/810 models 6.1.2 Rear view Fig. 6-2 : CPO 510 type chiller (rear view) Pump (option) Cooling liquid return inlet Cooling liquid outlet Page 32 / 86 Technical Notice CSO/CPO V1.1 / 10.14...

  • Page 33: Technical Specifications

    CPO 510/810 models 6 6.1.3 Technical specifications 6.1.3.1 Standard operating parameters Description Unit CPO 510 CPO 810 Refrigerant Type R407C R407C Refrigerating capacity Power consumption Heat load Inlet temperature °C Outlet temperature °C Max. input temperature °C 38°C 38°C 6.1.3.2 Electrical data Description Unit CPO 510...
  • Page 34 6 CPO 510/810 models 6.1.3.5 Hydraulic circuit Description Unit CPO 510 CPO 810 Min. flow rate l/min Inlet/outlet coupling diameter 1” 1” 6.1.3.6 Dimensions Description Unit CPO 510 CPO 810 Width Height Depth Weight 6.1.3.7 Other characteristics Description Unit CPO 510 CPO 810 Standard colour ral 7035...

  • Page 35: Handling

    CPO 510/810 models 6 Handling The unit must be transported flat and must not sustain any shocks. Installation The unit is normally installed close to the machine being cooled, as indicated on the installation plans. During the installation, allow for a free space of about 0.5 m around the refrigeration unit. This distance must be 1 m in front of the exhaust fan.

  • Page 36: Commissioning

    6 CPO 510/810 models Commissioning The unit has been checked, tuned and tested in our workshops. Make the hydraulic and electrical connections. Make sure the oil circulates in the unit. Start up the unit (1). Check the rotation direction of the exhaust fan and the pump, if available (option C).

  • Page 37: Cpo 1010 - Cso 1000/1300/1700 Models 7

    CPO 1010 - CSO 1000/1300/1700 models 7 Chapter contents This chapter contains information specific to the CPO 1010, CSO 1000, CSO 1300 and CSO 1700 models. It covers all topics associated with installation, commissioning, tuning and maintenance of these models. For reasons of clarity, only the CPO 1010 model is described in the current chapter.

  • Page 38: Rear View

    7 CPO 1010 - CSO 1000/1300/1700 models 7.1.2 Rear view Fig. 7-2 : CPO 1010 type chiller (rear view) Pump (option) Cooling liquid outlet Outlet circuit pressure gauge  Cooling liquid return inlet (option V on request) Page 38 / 86 Technical Notice CSO/CPO V1.1 / 10.14...

  • Page 39: Technical Specifications

    CPO 1010 - CSO 1000/1300/1700 models 7 7.1.3 Technical specifications 7.1.3.1 Standard operating parameters Description Unit CPO 1010 CSO 1000 CSO 1300 CSO 1700 Refrigerant Type R407C R407C R407C R407C Refrigerating capacity 16.4 Power consumption Heat load 11.9 11.9 15.5 20.9 Inlet temperature °C...
  • Page 40 7 CPO 1010 - CSO 1000/1300/1700 models 7.1.3.5 Hydraulic circuit Description Unit CPO 1010 CSO 1000 CSO 1300 CSO 1700 Min. flow rate l/min Inlet/outlet coupling diameter 1” 1”1/4 1”1/4 1”1/4 7.1.3.6 Dimensions Description Unit CPO 1010 CSO 1000 CSO 1300 CSO 1700 Width Height...

  • Page 41: Handling

    CPO 1010 - CSO 1000/1300/1700 models 7 Handling The unit must be transported flat and must not sustain any shocks. Installation The unit is normally installed close to the machine being cooled, as indicated on the installation plans. During the installation, allow for a free space of about 0.5 m around the refrigeration unit. This distance must be 1 m in front of the exhaust fan.

  • Page 42: Commissioning

    7 CPO 1010 - CSO 1000/1300/1700 models Commissioning The unit has been checked, tuned and tested in our workshops. Make the hydraulic and electrical connections. Make sure the oil circulates in the unit. Start up the unit (1). Check the rotation direction of the exhaust fan and the pump, if available (option C).

  • Page 43: Tuning And Maintenance 8

    Tuning and maintenance 8 Chapter contents This chapter describes the various possible tunings and maintenance operations common to the whole CSO/CPO range of chillers. Tunings 8.1.1 Thermostat For machines equipped with the hot gas bypass option, the thermostat is different. mute ...
  • Page 44  priate manner.  Marksa SA denies all responsibility for any un-authorised parameter modification. Page 44 / 86 Technical Notice CSO/CPO V1.1 / 10.14...

  • Page 45: Maintenance

    Tuning and maintenance 8 Maintenance 8.2.1 Periodic maintenance Regular maintenance by competent personnel makes it possible to ensure reliable and efficient ope- ration of the refrigeration unit. 8.2.2 Safety LECTROCUTION AND SERIOUS INJURY Always disconnect the power supply of the unit before any maintenance operation. There is a significant risk of burns from contact with the copper piping.

  • Page 46: Annual Maintenance

    8 Tuning and maintenance 8.2.6 Annual maintenance Cut off the electrical power at machine cabinet. Check the exhaust fan motor bearings. If necessary, replace the bearings. Clean the exhaust fan blades. Proceed with a visual inspection of all the components (cabling and capillaries included) to make sure that none of the components are broken, damaged, ice-encrusted or fouled (exhaust fan, condenser).

  • Page 47: Options 9

    Options 9 Chapter contents This chapter describes the various options and their availability depending on the refrigeration unit models. List of the options Legend : Option X Standard Option 1010 1000 1300 1700 Air filter (A) Cleanable heat exchanger (B) Pump (C) Distributor (D) 400 V Power sup-...

  • Page 48: Air Filter (A)

    9 Options 9.1.1 Air filter (A) 9.1.1.1 Description of the option Fig. 9-1 : Air filter (metallic) Air filters (metallic or synthetic) Air filters make it possible to protect the condenser against impurities in the air. The filters can be either metallic or synthetic. 9.1.1.2 Maintenance Metallic filters Metallic filters should be cleaned monthly during the regular monthly maintenance procedure.

  • Page 49: Cleanable Heat Exchanger (B)

    Options 9 9.1.2 Cleanable heat exchanger (B) 9.1.2.1 Description of the option Allows transporting the oil with particles larger than 500µl. Fig. 9-2 : Cleanable heat exchanger Cleanable heat exchanger Covers Technical Notice CSO/CPO V1.1 / 10.14 Page 49 / 86...
  • Page 50 9 Options 9.1.2.2 Maintenance URNS Before any intervention on the device, switch  off the electrical power supply. Be careful because some parts of the refrigera- ting circuit may be very hot (in particular, the copper pipings). Stop the unit. Unscrew the covers (2) of the heat exchanger.

  • Page 51: Pump (C)

    Options 9 9.1.3 Pump (C) 9.1.3.1 Description of the option The pump is either controlled by the CPO unit (1) (customer pump) or directly installed in the CPO unit (2). If the pump is installed directly in the unit (2), prime before commissioning (fill the oil pipe and drain). Fig.

  • Page 52: Distributor (D)

    9 Options 9.1.4 Distributor (D) 9.1.4.1 Description of the option The distributor allows distributing the cooling liquid in several circuits. 9.1.4.2 Maintenance No special maintenance procedures. 9.1.4.3 Troubleshooting No special troubleshooting procedures. 9.1.5 400 V Power supply (E) 9.1.5.1 Description of the option A 400V power supply makes it possible to use electrical components with very high reliability.

  • Page 53: Flow Rate Controller (F)

    Options 9 9.1.6 Flow rate controller (F) 9.1.6.1 Description of the option The flow rate controller (1) makes it possible to detect faults in the external refrigeration circuit (the cus- tomer's machine). Its operation is to provide a delay in order to avoid the display of disruptive errors during the start-up of the refrigeration unit.

  • Page 54: Hot Gas Bypass (G)

    9 Options 9.1.7 Hot gas bypass (G) 9.1.7.1 Description of the option The hot gas bypass (1) option makes it possible to precisely maintain the liquid temperature by elimi- nating disruptive starting up and powering down of the compressor. Precision on the order of ± 0.1°C is possible with the addition of an Omron thermostat. Fig.
  • Page 55 Options 9 9.1.7.2 Omron E5CN thermostat Description Display no. 1 (PV) Displays the ongoing temperature / process value. The displayed value corresponds to the value measured by the temperature probe. Display no. 2 (SV) Displays the setpoint to be kept. The displayed value corresponds to the value measured by the temperature probe.
  • Page 56 9 Options Settings (Omron E5CN)  The values shown below are given for information only.  The parameters specific to the units are delivered with the CD (they can also be stuck inside the electrical panel). Symbol Type Value Adjustment Proportional strip Total time Diversion time...
  • Page 57 Options 9 9.1.7.3 Omron E5CC thermostat Description Display no. 1 (PV) Displays the temperature value / current process. The value displayed is the value measured by the temperature sensor. Display no. 2 (SV) Displays the setpoint value to be used. The value displayed is the value measured by the temperature sensor.
  • Page 58 9 Options Settings (Omron E5CC) The values shown below are given for information only. Symbol Type Value Adjustment Proportional strip Total time Diversion time Setting CN-T °C SL-H Max setpoint SL-L Min setpoint CNTL S-HC Stnd Orew PtRN ALt1 Type 1 alarm ALH1 Hysteresis ALt2...
  • Page 59 Options 9 9.1.7.4 Maintenance No special maintenance procedures. 9.1.7.5 Troubleshooting No special troubleshooting procedures. Technical Notice CSO/CPO V1.1 / 10.14 Page 59 / 86...

  • Page 60: Pre-Heating Kit (H)

    9 Options 9.1.8 Pre-heating kit (H) 9.1.8.1 Description of the option Heating (1) makes it possible to pre-heat water that might be too cold, particularly useful when pre- heating the machine or when the refrigeration unit(s) are located outside the building. A safety thermostat (2) protects the tank from inadequacies in the heating system.

  • Page 61: Differential Thermostat (L)

    Options 9 9.1.9 Differential thermostat (L) 9.1.9.1 Description of the option In non air-conditioned environments, the differential thermostat makes it possible to automatically adjust the refrigerant liquid temperature with respect to the ambient temperature. 9.1.9.2 Maintenance No special maintenance procedures. 9.1.9.3 Troubleshooting No special troubleshooting procedures....

  • Page 62: Lp/Hp Safety Pressure Controllers (S)

    9 Options 9.1.11 LP/HP safety pressure controllers (S) 9.1.11.1 Description of the option The pressure controller (1) makes it possible to protect the compressor against any possible loss of gas in the refrigeration circuit (LP) and protects the compressor after any significant excess of pressure of the refrigerant gas (HP).
  • Page 63 Options 9 9.1.11.3 Troubleshooting Activation of the LP section Gas leakage, insufficient gas quantities ✔ Find the origin of the leakage(s). Check and reconnect the circuit.. Activation of the HP section Fouled heat exchanger ✔ Clean the heat exchanger and the air filters (if fitted). Ambient temperature is too high (above the manufacturer's specified limit).

  • Page 64: Timer (T)

    9 Options 9.1.12 Timer (T) 9.1.12.1 Description of the option The timer (programmable clock) makes it possible to stop the unit outside of its normal operating hours and restart it if necessary. 9.1.12.2 Maintenance No special maintenance procedures. 9.1.12.3 Troubleshooting No special troubleshooting procedures.

  • Page 65: Programmable Troubleshooting Logic Controller (Y)

    A key, archiving menu (optional) page 68  + key: show useful information, version and See section “9.1.14.2 'A' key functions” on Marksa SA contact details page 66  B key, settings menu See section “9.1.14.5 '+' key functions” on ...
  • Page 66 “Fig. 9-14 :” Fig. 9-14 : Displays in non-regulation mode • or the Marksa SA contact details screen “Fig. 9-15 :” Fig. 9-15 : Displays in non-regulation mode Page 66 / 86 Technical Notice CSO/CPO V1.1 / 10.14...
  • Page 67 Options 9 9.1.14.3 'B' key functions B key: settings menu Press the B key (1) on the front panel several times to browse through the various settings. Press the ESC key to exit this menu. The PLC exits this menu automatically after a few minutes of inac- tivity.
  • Page 68 9 Options 9.1.14.4 '-' key functions: - key: show input and output statuses To use this function, you need to press and hold the - key. The screen appears as shown opposite. “Fig. 9-17 :”  Where the pixels around an input or output are highlighted, the corresponding input or output is active (1).
  • Page 69 + key (1): show useful information: • version and creation date • Marksa SA contact details. Press the ESC key to exit this menu. The PLC exits this menu automatically after a few seconds of inac- tivity. Fig. 9-18 : Display zoom...
  • Page 70 If the optionals flowmeters and / or pressure switches are installed, see section “9.1.14.6” with another example of screens. Fig. 9-20 : Version and Marksa SA contact details with regulation mode inactive Page 70 / 86 Technical Notice CSO/CPO V1.1 / 10.14...
  • Page 71 Options 9 9.1.14.6 Display pressure and flow New function available in the menu information ("+" key) from September 2014. The analog flowmeters and / or pressure switches must be installed. Examples of screens when the regulation function is used: • Press the + key several times in succession to scroll through the various screens on the display.
  • Page 72 When the regulation function is not used, the display shows: • version and creation date • or the Marksa SA contact details screen Fig. 9-22 : Version and Marksa SA contact details with regulation mode inactive Page 72 / 86 Technical Notice CSO/CPO V1.1 / 10.14...
  • Page 73 Options 9 9.1.14.7 List of error messages (variable) In the event of a fault, a red indicator lights up on the unit. When the red indicator light is on, the display shows the explanation in 3 languages. In the event of a breakdown, the fault that caused the problem is shown and remains shown on the screen.
  • Page 74 9 Options 9.1.14.8 Settings table (variable) This table explains the acronyms used and allows you to select the setting you wish to change. The settings for the various controllers are provided with the diagrams and user guide CDs sup-  plied with each device.
  • Page 75 Options 9 Code Description *Default value if not specified r2.2 Maximum set point *(180 sec with a compressor, 30 sec with a c1.2 Minimum time between successive switch-ons pump and 10 sec with a solenoid valve) A0.2 Differential between alarms AL and AH *(=2°C, relative to AL.2 or AH.2) AL.2 Low Temperature threshold alarm...
  • Page 76 9 Options Code Description Output settings On Delay for output 1 Off Delay for output 1 On Delay for output 2 Off Delay for output 2 On Delay for output 3 Off Delay for output 3 On Delay for output 4 Off Delay for output 4 Flow meter settings Flow meter set point...
  • Page 77 Options 9 9.1.14.9 Advanced settings: user information The controller has its own self-settings menu, with the various settings entitled "macros":  See section “9.1.14.3 'B' key functions” on page 67 This subject is covered here to give you an idea of the vocabulary and appearance of these settings ...

  • Page 78: High Temperature Alarm (Z)

    9 Options 9.1.15 High temperature alarm (Z) 9.1.15.1 Description of the option The high temperature alarm indicates an incorrect operation of the device. This information is forwarded to the device by the equipment being cooled. An error is forwarded to the device in the event of overheating. It may be caused by: A loss of gas.

  • Page 79: Troubleshooting 10

    Troubleshooting 10 Chapter contents This chapter contains useful instructions to troubleshoot your refrigeration unit. 10.1 Warnings We decline any responsibility for operations carried out on the unit by unqualified personnel. Before troubleshooting the so-called refrigeration circuit, first make sure that the control system is operating cor- rectly and properly configured.

  • Page 80: Failures

    10 Troubleshooting 10.3 Failures Before intervening on the unit, switch off the electrical power supply. Be careful when interve- ning on the refrigeration circuit because some parts can get very hot. Operating incidents can arise from : • the refrigeration unit stopping (the pump(s) and/or the compressor do not run). •...
  • Page 81 Troubleshooting 10 The motor doesn't run Check the rotation direction Circuit breaker tripped out ✔ Check the liquid level. ✔ Reset the circuit breaker. Bearings defective ✔ Replace the bearings. Insufficient fluid ✔ Add fluid. Fluid quality nonconforming ✔ Change the fluid. Motor out of order ✔...
  • Page 82 10 Troubleshooting HP contact open Ambient temperature too high ✔ Cut off the power supply Cool down the local environment Restart the unit by pressing the pressure controller RESET button (1) Restart the power supply Filters (Option) fouled ✔ Clean or replace the filters Exhaust fan defective ✔...

  • Page 83: Appendix 11

    Appendix 11 Chapter contents This chapter contains various information applicable to the entire range of CSO/CPO water chillers. For information specific to your model, please refer to the schematics and technical data sheets in the ap- pendix. 11.1 Compliance 11.1.1 Directives Your refrigeration unit conforms to the directive 2006/42/EC of the European Parliament and of the Council of May 17th 2006 relating to the unification of the legislation of member states regarding ma-...

  • Page 84: Disposal Of The Product

    11 Appendix 11.2 Disposal of the product 11.2.1 General remarks In order to protect both people and the environment, any device and its accessories must be disposed of according to the rules. The legislation and local regulations relating to the elimination of waste must also be necessarily respected.

  • Page 85: Maintenance Sheet

    Appendix 11 11.4 Maintenance sheet The original blank maintenance sheet must be kept with this manual. Whenever a maintenance intervention is required, make a copy of it and then fill out the details. Maintenance / Event / Fault Action Operator Date Technical Notice CSO/CPO V1.1 / 10.14 Page 85 / 86...

  • Page 86: Compliance Certificat

    11 Appendix 11.5 Compliance certificat Page 86 / 86 Technical Notice CSO/CPO V1.1 / 10.14...

This manual is also suitable for:

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