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Technical Notice V1.0 / 01.09

Page 79 / 100

Options 12

12.7

Hot gas bypass (G)

12.7.1 Description of the option

The hot gas bypass option makes it possible to precisely maintain the liquid temperature by eliminating
disruptive starting up and powering down of the compressor.
Precision in the order of ± 0.1°C is possible with the addition of an Omron thermostat.

Fig. 12-4 : Basic schematic

TH

BP - HP

(1)

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Содержание CSSW 50

Страница 1: ...INDUSTRIAL REFRIGERATION UNITS TECHNICAL NOTICE V1 0...

Страница 2: ...number is located on the identification tablet fixed on the re frigeration unit LEISTUNGSAUFNAHME Copyright The reproduction even partially of this document is forbidden No part may be copied in any f...

Страница 3: ...ion 17 2 3 1 Basic schematic 17 2 3 2 Principles of operation 18 2 3 3 Separated tank and refrigeration units 19 2 4 Models and available options 20 3 Model CSW 50 65 80 21 3 1 Description 21 3 1 1 Ov...

Страница 4: ...he reservoir 42 6 4 Commissioning 43 6 5 Specific tuning 43 6 5 1 Draining the reservoir 43 7 Model CSW 600 800 45 7 1 Description 45 7 1 1 Overall view 45 7 1 2 Technical specifications 47 7 2 Handli...

Страница 5: ...SW 3000 3500 4700 63 10 1 Description 63 10 1 1 Overall view 63 10 1 2 Technical specifications 65 10 2 Handling 67 10 3 Installation 67 10 3 1 Hydraulic connections 67 10 3 2 Electrical connections 6...

Страница 6: ...rmostat 80 12 7 3 Maintenance 81 12 7 4 Breakdowns 81 12 8 Pre heating kit H 82 12 8 1 Description of the option 82 12 8 2 Maintenance 82 12 8 3 Breakdowns 82 12 9 Thermal insulation I 83 12 9 1 Descr...

Страница 7: ...nance 88 12 17 3 Breakdowns 88 12 18 High temperature alarm Y 89 12 18 1 Description of the option 89 12 18 2 Maintenance 89 12 18 3 Breakdowns 89 13 Breakdowns 91 13 1 Warnings 91 13 2 Checks 91 13 2...

Страница 8: ...Page 8 100 Technical Notice V1 0 01 09 Table of contents...

Страница 9: ...ded 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 com...

Страница 10: ...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 Example The Exit command allows to quit the softwa...

Страница 11: ...to the current subject Example See section 4 2 4 Sensor Board Positioning on page 47 1 1 6 List of items This style is used in order to display a list of elements Example item 1 item 2 item 3 1 1 7 T...

Страница 12: ...r serious injury Example Always disconnect the power supply cable before working inside the device A contact with live conductors may cause an electrocution 1 1 8 3 Caution Used to indicate a potentia...

Страница 13: ...1 Example For more information contact either your DiaMed AG representative or the manufacturer direct ly 1 1 9 2 Note Used to give a general or purely informative remark Example The housing reassemb...

Страница 14: ...Page 14 100 Technical Notice V1 0 01 09 1 Introduction...

Страница 15: ...rty and environmental pollution In the same manner the legal conditions accident pre vention and environmental protection measures as well as the technical regulations for guaranteeing safe and suitab...

Страница 16: ...100 Technical Notice V1 0 01 09 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 S...

Страница 17: ...Technical Notice V1 0 01 09 Page 17 100 Generalities 2 2 3 Operation 2 3 1 Basic schematic 2 3 1 1 Direct cooling of the tank Fig 2 1 Basic schematic TH BP HP 7 6 4 3 2 1 8 9 10 11 12 14 13 5...

Страница 18: ...ole range of water chillers supply chilled water 9 continuously at a constant temperature The chilling is accomplished in the following manner An HFC refrigerant of either R134A tetrafluo roethane or...

Страница 19: ...and refrigeration units For refrigeration units of greater capacity the refrigerant liquid returned is stored in a reservoir 10 then pumped 1 and chilled 11 before being returned back to the cooling...

Страница 20: ...product name just after the reference to its class Example CSW 100 NRV With N Water level control R Reinforced pump V Visual water level indicator Model Capacity Refrigerant gas Model Capacity Refrig...

Страница 21: ...ted with installation commissioning tuning and maintenance of these models For reasons of clarity only the CSW 80 model is described in the current chapter However all of the explanations apply in a s...

Страница 22: ...al Notice V1 0 01 09 3 Model CSW 50 65 80 4 Cooling liquid outlet 5 Cooling liquid return inlet 6 Refilling port 7 Visual water level indicator 8 Electric power connector Fig 3 2 CSW 80 type chiller r...

Страница 23: ...emperature C 22 22 Outlet temperature C 20 20 Flow rate l min 8 8 Maximum input temperature C 38 38 Description Units CSW 50 CSW 65 80 Power input kW 0 4 0 6 Maximum amperage A 2 5 3 Start up amperage...

Страница 24: ...input kW 0 16 0 16 Amperage A 0 70 0 70 Rotation t min 2900 2900 Power supply V x ph x Hz 230 x 1 x 50 230 x 1 x 50 Stainless steel reservoir l 7 7 Inlet outlet couplings 3 4 3 4 Description Units CSW...

Страница 25: ...ction diameter at least equal to that indicated in the technical characteristics See section 3 1 2 Technical specifications on page 23 3 3 2 Electrical connections ELECTROCUTION The machine cabinet mu...

Страница 26: ...4 Commissioning The unit has been checked tuned and tested in our workshops A Make the hydraulic and electrical connections B Fill the reservoir with liquid C Start up the machine 1 D Check the rotati...

Страница 27: ...ning and maintenance of these models For reasons of clarity only the CSW 100 model is described in the current chapter However all of the explanations apply in a similar fashion to the CSW 150 model 4...

Страница 28: ...emperature C 22 22 Outlet temperature C 20 20 Flow rate l min 8 8 Maximum input temperature C 38 38 Description Units CSW 100 CSW 150 Power input kW 0 8 1 0 Maximum amperage A 6 5 6 5 Start up amperag...

Страница 29: ...input kW 0 16 0 16 Amperage A 0 70 0 70 Rotation t min 2900 2900 Power supply V x ph x Hz 230 x 1 x 50 230 x 1 x 50 Stainless steel reservoir l 8 8 Inlet outlet couplings 3 4 3 4 Description Units CSW...

Страница 30: ...ction diameter at least equal to that indicated in the technical characteristics See section 4 1 2 Technical specifications on page 28 4 3 2 Electrical connections ELECTROCUTION The machine cabinet mu...

Страница 31: ...connections B Fill the reservoir with liquid C Start up the machine 1 D Check the rotation direction of the pump and the exhaust fan 4 5 Specific tuning 4 5 1 Draining the reservoir A Disconnect the o...

Страница 32: ...Page 32 100 Technical Notice V1 0 01 09 4 Model CSW 100 150...

Страница 33: ...maintenance of these models For reasons of clarity only the CSW 200 model is described in the current chapter However all of the explanations apply in a similar fashion to the CSW 300 model 5 1 Descr...

Страница 34: ...25 25 Outlet temperature C 20 20 Flow rate l min 8 10 Maximum input temperature C 38 38 Description Units CSW 200 300 CSW200E 300E Power input kW 1 70 1 70 Maximum amperage A 9 3 25 Start up amperage...

Страница 35: ...kW 0 16 0 25 Amperage A 0 70 0 80 Rotation t min 2900 2900 Power supply V x ph x Hz 230 x 1 x 50 400 x 3 x 50 Stainless steel reservoir l 21 21 Description Units CSW 200 300 CSW200E 300E Width mm 435...

Страница 36: ...tion diameter at least equal to that indicated in the technical characteristics See section 5 1 2 Technical specifications on page 34 5 3 2 Electrical connections ELECTROCUTION The machine cabinet mus...

Страница 37: ...ctions B Fill the reservoir with liquid C Start up the machine 1 D Check the rotation direction of the pump and the exhaust fan 5 5 Specific tuning 5 5 1 Draining the reservoir A Put a container under...

Страница 38: ...Page 38 100 Technical Notice V1 0 01 09 5 Model CSW 200 300...

Страница 39: ...covers all topics associated with ins tallation commissioning tuning and maintenance of these models 6 1 Description 6 1 1 Overall view 1 Programmable controller display optional 2 Thermostat display...

Страница 40: ...W 1200 Heat load kW 5200 Inlet temperature C 24 Outlet temperature C 20 Flow rate l min 15 Maximum input temperature C 38 Description Units CSW 400 Power input kW 2 5 Maximum amperage A 7 5 Start up a...

Страница 41: ...15 Total pressure bar 2 5 Power input kW 0 37 Amperage A 1 80 Rotation t min 2900 Power supply V x ph x Hz 400 x 3 x 50 Stainless steel reservoir l 35 Inlet outlet couplings 3 4 Description Units CSW...

Страница 42: ...ion diameter at least equal to that indicated in the technical characteristics See section 6 1 2 Technical specifications on page 40 6 3 2 Electrical connections ELECTROCUTION The machine cabinet must...

Страница 43: ...tions B Fill the reservoir with liquid C Start up the machine 1 D Check the rotation direction of the pump and the exhaust fan 6 5 Specific tuning 6 5 1 Draining the reservoir A Put a container under...

Страница 44: ...Seite 44 100 Technical Notice V1 0 01 09 6 Model CSW 400...

Страница 45: ...and maintenance of these models For reasons of clarity only the CSW 800 model is described in the current chapter However all of the explanations apply in a similar fashion to the CSW 600 model 11 1...

Страница 46: ...00 5 Output circuit pressure gauge on request 6 Electric power connector on request 7 Cooling liquid return inlet 8 Cooling liquid outlet 9 Refilling port 10 Drainage tap 11 Visual water level indicat...

Страница 47: ...load kW 7500 Inlet temperature C 25 Outlet temperature C 20 Flow rate l min 20 Maximum input temperature C 38 Table 11 1 Description Units CSW 600 800 Power input kW 3 Maximum amperage A 9 5 Start up...

Страница 48: ...sure bar 1 5 Power input kW 0 37 Amperage A 1 8 Rotation t min 2900 Power supply V x ph x Hz 400 x 3 x50 Stainless steel reservoir l 55 Inlet outlet couplings 3 4 Table 11 5 Description Units CSW 600...

Страница 49: ...ction diameter at least equal to that indicated in the technical characteristics See section 7 1 2 Technical specifications on page 71 11 3 2 Electrical connections ELECTROCUTION The machine cabinet m...

Страница 50: ...ions B Fill the reservoir with liquid C Start up the machine 1 D Check the rotation direction of the pump and the exhaust fan 11 5 Specific tuning 11 5 1 Draining the reservoir A Put a container under...

Страница 51: ...g and maintenance of these models For reasons of clarity only the CSW 1000 model is described in the current chapter However all of the explanations apply in a similar fashion to the CSW 900 CSW 1300...

Страница 52: ...ice V1 0 01 09 11 Model CSW 900 1000 1300 1700 5 Electric power connector 6 Cooling liquid return inlet 7 Cooling liquid outlet 8 Visual water level indicator 9 Drainage tap Fig 11 2 CSW 1000 type chi...

Страница 53: ...e C 27 25 27 Outlet temperature C 20 20 20 Flow rate l min 20 35 35 Maximum input temper ature C 38 38 38 Table 11 1 Description Units CSW 900 1000 CSW 1300 CSW1700 Power input kW 4 4 5 5 5 Maximum am...

Страница 54: ...in 20 35 35 Total pressure bar 2 2 5 2 5 Power input kW 0 37 0 37 0 37 Amperage A 1 8 1 8 1 8 Rotation t min 2900 2900 2900 Power supply V x ph x Hz 400 x 3 x 50 400 x 3 x 50 400 x 3 x 50 Stainless st...

Страница 55: ...oss section diameter at least equal to that indicated in the technical characteristics See section 8 1 2 Technical specifications on page 71 11 3 2 Electrical connections ELECTROCUTION The machine cab...

Страница 56: ...connections B Fill the reservoir with liquid C Start up the machine 1 D Check the rotation direction of the pump and the exhaust fan 11 5 Specific tuning 11 5 1 Draining the reservoir A Put a containe...

Страница 57: ...and maintenance of these models For reasons of clarity only the CSW 2000 model is described in the current chapter However all of the explanations apply in a similar fashion to the CSW 2400 model 11...

Страница 58: ...ice V1 0 01 09 11 Model CSW 2000 2400 5 Electric power connector optional 6 Output circuit pressure gauge 7 Cooling liquid outlet 8 Cooling liquid return inlet 9 Drainage tap Fig 11 2 CSW 2000 type ch...

Страница 59: ...re C 27 28 Outlet temperature C 20 20 Flow rate l min 40 40 Maximum input temperature C 42 42 Description Units CSW 2000 CSW 2400 Power input kW 8 0 9 0 Maximum amperage A 16 18 Start up amperage A 50...

Страница 60: ...wer input kW 0 37 0 37 Amperage A 1 2 1 2 Rotation t min 2900 2900 Power supply V x ph x Hz 400 x 3 x 50 400 x 3 x 50 Stainless steel reservoir l 145 145 Inlet outlet couplings 1 1 Description Units C...

Страница 61: ...section diameter at least equal to that indicated in the technical characteristics See section 9 1 2 Technical specifications on page 71 11 3 2 Electrical connections ELECTROCUTION The machine cabinet...

Страница 62: ...tions B Fill the reservoir with liquid C Start up the machine 1 D Check the rotation direction of the pump and the exhaust fan 11 5 Specific tuning 11 5 1 Draining the reservoir A Put a container unde...

Страница 63: ...s For reasons of clarity only the CSW 3000 model is described in the current chapter However all of the explanations apply in a similar fashion to the CSW 3500 and CSW 4700 models 11 1 Description 11...

Страница 64: ...Page 70 100 Technical Notice V1 0 01 09 11 Model CSW 3000 3500 4700 7 Cooling liquid outlet 8 Cooling liquid return inlet Fig 11 2 CSW 3000 type chiller rear view 7 8...

Страница 65: ...l min 75 75 115 Maximum input temperature C 42 42 42 Description Units CSW 3000 CSW 3500 CSW 4700 Power input kW 12 0 13 0 15 0 Maximum amperage A 24 26 28 Start up amperage A 75 80 90 Line fuse A T...

Страница 66: ...1 Amperage A 1 6 1 6 2 6 Rotation t min 2800 2800 2900 Power supply V x ph x Hz 400 x 3 x 50 400 x 3 x 50 400 x 3 x 50 Stainless steel reservoir l 145 145 405 Inlet outlet couplings 1 1 2 1 1 2 2 Desc...

Страница 67: ...s section diameter at least equal to that indicated in the technical characteristics See section 13 1 2 Technical specifications on page 71 11 3 2 Electrical connections ELECTROCUTION The machine cabi...

Страница 68: ...nections B Fill the reservoir with liquid C Start up the machine 1 D Check the rotation direction of the pump and the exhaust fan 11 5 Specific tuning 11 5 1 Draining the reservoir A Put a container u...

Страница 69: ...y the value of the selected parameter 4 DOWN def button Decrease the displayed setting s value Go to the following parameter 11 1 1 2 Indications on the display COMP 1 Led indicates that the com press...

Страница 70: ...tore the new value and move on to display the following parameter F Press on the PRG key to store the new value and terminate the parameter modification procedures In order to exit without saving the...

Страница 71: ...4 Weekly maintenance A Check that the liquid is at the maximum level of the visual indicator An electrical level detector can be installed as an option B Restart the unit by switching it off and back...

Страница 72: ...ents are either broken damaged ice encrusted or fouled exhaust fan condenser Due to a lack of gas or operation of the unit at an evaporation temperature which is too low the heat exchangers can become...

Страница 73: ...A Air filter X X X X J By pass O O O O O O O O D Distributor O O O O O O O O E 400 V power supply O X X X X X F Water flow con troller O O O O O O O O G Hot gas bypass O O O O O O O O H Pre heating ki...

Страница 74: ...olenoid O O O O O O Y Programma ble problem recovery controller O O O O X X Z High tempera ture alarm O O O O O O O O Abb Option CSW 50 65 80 CSW 100 150 CSW 200 300 CSW 400 CSW 600 800 CSW 900 1000 1...

Страница 75: ...The filters can be either metallic or synthetic 12 2 2 Maintenance 12 2 2 1 Metallic filters Metallic filters should be cleaned monthly during the regular monthly maintenance procedure 12 2 2 2 Synthe...

Страница 76: ...ort of the refrigeration unit the bypass is engaged and reinjects the liquid into the reservoir in order to avoid damages in the external circuit 12 3 2 Maintenance The bypass is regulated in the fact...

Страница 77: ...n several circuits 12 4 2 Maintenance No special maintenance procedures 12 4 3 Breakdowns No special breakdown procedures 12 5 400V power supply E 12 5 1 Description of the option A 400V power supply...

Страница 78: ...to provide a delay in order to avoid the display of disruptive errors during the start up of the refrigeration unit 12 6 2 Maintenance No special maintenance procedures 12 6 3 Breakdowns Faulty flow...

Страница 79: ...the option The hot gas bypass option makes it possible to precisely maintain the liquid temperature by eliminating disruptive starting up and powering down of the compressor Precision in the order of...

Страница 80: ...anual mode is activated STOP Alight The device is stopped RMT remote Alight Remote control is activated AT auto tuning Flashes during automatic regulation of the PID 4 A M key Selection between manual...

Страница 81: ...r r 12 7 2 3 Activation of auto tuning A Hold down the button 1 for more than one se cond B Press once on 2 C Hold down the button 1 for more than one se cond to go to level 1 D Press on 2 to activate...

Страница 82: ...might be too cold particularly useful when pre hea ting the machine or when the refrigeration unit s are located outside the building A safety thermostat 2 protects the tank from inadequacies in the h...

Страница 83: ...kdowns No special breakdown procedures 12 10 Differential thermostat L 12 10 1 Description of the option In non air conditioned environments the differential thermostat makes it possible to automatica...

Страница 84: ...an alarm is shown on the programmable control ler display and or on the visual display located on the front panel It is recommended to fill the tank up to the visual display level 12 12 2 Maintenance...

Страница 85: ...eral bars 12 13 2 Maintenance Maintenance and required checking are reduced The circuit is pressurised Eliminate the pressure before any intervention on the customer s coo ling circuit Open the draina...

Страница 86: ...12 14 1 Description of the option A reinforced pump makes it possible to ensure better liquid circulation during significant load losses coo ling of spindles for example 12 14 2 Maintenance No special...

Страница 87: ...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 significantly excess of pr...

Страница 88: ...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 12 16 2 Maintenance No special maintenance p...

Страница 89: ...icates 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 b...

Страница 90: ...Page 90 100 Technical Notice V1 0 01 09 12 Options...

Страница 91: ...is motive in mind we do advise you to entrust such work to a qualified refrigeration engineer 13 2 Checks 13 2 1 Pressure checks It is highly recommended to entrust any intervention to a specialist re...

Страница 92: ...3 1 The unit doesn t work Looking for the cause of the breakdown A Check the power supply for the unit B Check that the safety switch 10Q1 is in position 1 power on for the unit C Check the pump circu...

Страница 93: ...at the compressor is running The compressor is powered on but doesn t work The internal compressor safety switch has been activated Cut off the power supply Let the unit cool off may take several hour...

Страница 94: ...lean the exhaust fan or replace it Condenser fouled Clean the condenser The thermostat no longer controls the compressor Faulty probe the alarm message Er on the thermostat display Replace the probe F...

Страница 95: ...nt with directive 98 37 CE from the European Parliament and Council on June 22nd 1998 relating to the unification of the legislation of member states regarding machinery For further details please ref...

Страница 96: ...cation of such parts must be pre cisely detailed in the request 14 2 2 Preparation A Completely drain the hydraulic circuit into an clearly identified empty container B As regards the refrigeration ga...

Страница 97: ...Appendix 14 14 3 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 M...

Страница 98: ...ata sheet This notice being common to several refrigeration unit models the information specific to your model ap pears in a separately delivered technical data file This file contains the following e...

Страница 99: ...Technical Notice V1 0 01 09 Page 99 100 100 Appendix 14 14 5 Compliance documents...

Страница 100: ...3 44 with directive 73 23 and with directive CEM EMV 89 336 with amendments 92 31 We declare that this machine are in conformity KONFORMIT TSERKL RUNG Wir MARKSA S A av du Technicum 42 2400 Le Locle e...

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