FRIULAIR PURESTREAM CHILLERS CWE-Q 041 Use And Maintenance Manual Download

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7425MUM753

Model: CWE-Q

- Use and Maintenance Manual

Rev. 15

WATER CHILLER

Model: CWE-Q

Use and Maintenance Manual

Summary of Contents for PURESTREAM CHILLERS CWE-Q 041

Page 1: ...7425MUM753 Model CWE Q Use and Maintenance Manual Rev 15 WATER CHILLER Model CWE Q Use and Maintenance Manual ...

Page 2: ...Editions Record Code Revision Edition Changes 7425MUM753 15 11 2020 Original instructions ITALIAN EN Translation of the original instructions ...

Page 3: ... on the side of the chiller contains all essential information about the machine You will have to give this data to the manufacturer or reseller whenever you request information spare parts etc during the warranty period Removing or tampering with the identification plate will void the warranty Warranty conditions The warranty is valid for 12 months from the machine being powered up and no longer ...

Page 4: ......

Page 5: ...tions 10 3 4 1 Recommended water system 10 3 4 2 Use of ethylene glycol as a winter anti freeze 11 3 4 3 Charging the water circuit 11 3 5 Electrical connections 12 3 5 1 Connecting a remote on off switch and a remote alarm indicator light 12 4 PRELIMINARY CHECKS AND START UP 13 4 1 Preliminary checks and preparation for the first start up 13 4 2 Start up 13 4 2 1 Start up under critical condition...

Page 6: ...igh pressure pressure switch 23 7 OPERATING LIMITS 24 7 1 Minimum water flow 26 8 SEPR SEASONAL ENERGY PERFORMANCE RATIO 27 9 MAINTENANCE INSPECTIONS AND PERIODIC CHECKS 28 10 TROUBLESHOOTING 29 11 DISMANTLING THE CHILLER 32 12 WATER DIAGRAMS 33 13 REFRIGERANT DIAGRAMS 34 14 DIMENSIONAL DRAWINGS 35 ...

Page 7: ...e instructions provided meticulously Risk of danger component or system under pressure Risk of danger component or system that can reach high temperatures during operation Risk of danger it is absolutely forbidden to use water to extinguish fires near or on the chiller Risk of danger it is absolutely forbidden to operate the machine with the panel open Service that can be performed by the machine ...

Page 8: ...al power supply These chillers contain R410A refrigerant fluids Service of the refrigerant circuit must be performed by specialized personnel using proper tools Any modifications to the machine or related operating parameters not previously verified and authorized by the Manufacturer may be hazardous and will invalidate the guarantee Do not use water to extinguish fires near or on the chiller 1 3 ...

Page 9: ...anufacturer s plate Do not solder on the exchangers or refrigerant fluid pipes Do not install the equipment in insufficiently ventilated rooms areas exposed to sources of heat or near inflammable substances During operation the equipment must not be subjected to vibrations that could cause fatigue failures Keep the documentation attached to the equipment user manual declaration of conformity etc f...

Page 10: ...r windings Condenser heat exchanger with copper pipes and aluminum fins which enables heat exchange between the refrigerant and the air It condenses the refrigerant gas by transferring condensation heat from the refrigerant gas to the air which flows to the outside As a result high pressure liquid refrigerant is produced Thermostatic expansion valve this reduces the pressure of the refrigerant liq...

Page 11: ...he motor winding 2 4 CONDENSATION CONTROL When the ambient air temperature decreases air flow cooling capacity increases considerably lowering the pressure within the condenser The fans are switched off or slowed down in case of CA CE and CL options to reduce air flow and prevent the condensation pressure going below the acceptable limits for correct chiller circuit operation With CA CE and CL the...

Page 12: ...04 High pressure switch 06 Compressor 08 Condenser 09 Fan 10 Filter 13 Gate Valve 14 Water strainer 17 Electronic controller 18 Evaporator 20 Liquid receiver OPT 22 Disconnector switch 23 High pressure manometer 24 Low pressure manometer 31 Safety valve 34 Sight glass 35 Thermostatic valve 37 Pressure transducer 45 Water manometer 61 Power input 68 On off light 83 Pressure plug 85 Solenoid valve 9...

Page 13: ...s sticker each spare part is identified with its ID Number and related Spare Part Number Here below the cross reference table between ID Number and exploded drawings Ref With their description and quantity installed inside chillers NOTE To order the suggested spare parts or any other part it is necessary to quote the data reported on the identification plate ...

Page 14: ...ft truck or pallet jack always check its stability before lifting 3 1 2 Lifting with belts and tubes Base supports that can accommodate bars to raise the units are provided Use steel tubes with a diameter of 1 and at least 0 12 in 3 mm thick and long enough to project at least 9 85 11 81 in 250 300 mm from both sides of the machine s profile Lock the belts so that they won t slip off during liftin...

Page 15: ...ce or repair see paragraph 3 3 1 Installation spaces The air temperatures in the area selected for installation see Chapter 7 Operating Limits Attention If the machine is installed outside it could find itself at a temperature lower than 32 F 0 C when stopped the formation of ice could damage the evaporator If you do not intend to drain the machine during the winter you must add anti freeze to the...

Page 16: ...3 4 1 Recommended water system The CWE Q units can be provided with pump tank water strainer standard however it is advisable to also equip the water circuit with A mechanical water strainer and a check valve upstream from the charging tap An air vent at the highest point of the system A drain tap in the lowest point of the system Manometers and thermometers at the machine s water input and output...

Page 17: ...40 For glycol concentrations higher than 40 contact our company s sales offices to make sure that the mechanical seal and the pump motor are suitable for the type and concentration of fluid loaded in the hydraulic system 3 4 3 Charging the water circuit Check that the drain taps are turned off Open all the system s vent valves Turn on the system s shut off devices Start filling by slowly turning o...

Page 18: ... section shown on the electrical diagram Attention Never change the internal electrical connections as the warranty will be immediately voided Important Screw the wires solidly to the terminal strip of the cut off switch and lock the wire with a cable gland Important Make the cable entering the machine enters the cable gland from below this prevents rain from dripping inside the machine Important ...

Page 19: ...in power supply switch Close the cut off switch on the machine s electrical panel I position This puts the machine under voltage without starting it up Attention Apply voltage to the machine at least two hours before start up to give the heating elements in the compressor housing time to heat the oil inside Attention Our company reserves the right of not recognizing the warranty in case of prematu...

Page 20: ...check that the shut off taps and the functioning of the pump are turned on Reset the alarm following the procedure in paragraph 5 7 1 Displaying and resetting alarms 5 Wait for the compressors to start 4 2 1 Start up under critical conditions The consequence of starting up under critical conditions could be the intervention of the high pressure pressure switch to rearm the high pressure pressure s...

Page 21: ...te of the compressor The state of the pump The inlet water temperature upper value The outlet water temperature lower value All digital and analogue inputs and outputs navigation between parameters Displays the following alarms Water differential pressure switch High pressure switch Low pressure transducer Anti freeze Compressor protection wrong R S T phase sequence Pump s thermal protection Press...

Page 22: ...e Flashing fan alarm Antifreeze heaters Optional On resistors active Off no resistance active Flashing resistance alarm Hot cold cycle inversion Maintenance LED On at least one component is active in manual mode Flashing maximum working hours set have been reached by that component Communication LED Flashing communication in progress via CANBUS RS 485 DEFROST mode Access DEFROST active Flashing dr...

Page 23: ...ched on immediately even if the temperature is still out the neutral zone but it will be waited the delay sets SWITCH OFF The compressor is switched off when the temperature COOLING Working temperature Setpoint HEATING Working temperature Setpoint The compressor is on if the temperature is inside the neutral zone or if COOLING Working temperature Setpoint Neutral zone HEATING Working temperature S...

Page 24: ...ving press 5 5 CHANGING THE HEATING SET POINT To change the set point of the outgoing water proceed as follows Starting from the main screen press for 4 seconds and use the key to reach the User menu Press and use the key to reach the SPH1 parameter Press to change the value and use or keys to set it To confirm press To exit without saving press 5 6 DISPLAY OF INPUTS AND OUTPUTS It is possible to ...

Page 25: ...manual alarm therefore to restart the machine you will have to remove the cause of the alarm and reset it 5 7 1 Displaying and resetting alarms The Alarm icon turns on to indicate an alarm To display the code of the alarm that intervened Press the key Press at Alarm menu Use or keys to scroll the list of active alarms Press again until you return to the main screen To reset an alarm the condition ...

Page 26: ...protection pump 1 optional Manual AC27 Thermal protection pump 2 optional Manual AL11 High temperature refrigerant discharge Automatic AL13 Working limit Automatic AL14 Defrost Automatic AL27 Phase sequence alarm Manual ES01 Inlet water temperature probe Automatic ES02 Ambient temperature probe Automatic ES03 Outlet water temperature probe Automatic ES11 Discharge temperature probe Automatic ES12 ...

Page 27: ...time Press to confirm Press to return to the main screen 5 10 LOW WATER TEMPERATURES 32 F 0 C If it was not anticipated that the chiller unit offered was to produce water at temperatures close to 0 C 32 F or below you should contact our company To achieve temperatures that are negative or near zero it is necessary to use anti freeze ethylene glycol in percentages that depend on the desired tempera...

Page 28: ...setting value most of them trigger an alarm managed by the electronic controller For some safety devices once the cause of the alarm times out the machine resumes operation automatically as soon as the reset value is reached Others must be manually reset to restart the machine also see paragraph 5 11 Alarms The following paragraph lists the characteristics of each safety device 6 1 CALIBRATION OF ...

Page 29: ...igh pressure switch 1 Pressure transducer For this reason when dealing with an intervention of the high pressure switch it is necessary to A Identify the cause of the rise in pressure fans not working condensing coil dirty or obstructed obstacles to the flow of exiting air operating temperature outside operating limits etc also see Chapter 10 Troubleshooting and remove the cause if possible B Wait...

Page 30: ...of the outside air LEGEND Ethylene glycol mandatory contact our company Continuos fan s speed control phase cut type CA mandatory Continuos fan s speed control electronic fan s CE mandatory Low ambient temperature kit CL mandatory Warning Produced water temperatures less than 5 C 41 F require the use of glycolate mixtures and the setting of suitable electronic controller parameters Contact the com...

Page 31: ...25 7425MUM753 Model CWE Q Use and Maintenance Manual Rev 15 DIAGRAMS ...

Page 32: ...d serious damages to the evaporator and to the whole machine see following table Model CWE Q 041 068 100 140 Minimum water flow gal min 11 2 15 9 25 1 35 2 Minimum water flow m3 h 2 55 3 6 5 7 8 Check that water temperature difference between inlet and outlet of the chiller is less than 14 4 F 8 C higher values could be the symptom of an insufficient water flow ...

Page 33: ...ANCE RATIO ACCORDING TO COMMISSION REGULATION EU 2016 2281 Data reported here below are in accordance with European Regulation EU 2016 2281 for eco design requirements of cooling products and high temperature process chillers 575V 3Ph 60Hz Model CWE Q 041 068 100 140 SEPR 4 38 4 97 4 89 5 14 ...

Page 34: ...ces of oil on the pipes of the refrigerant circuit symptom of refrigerant leaks Every 6 months Check the tightness of the electrical terminals both inside the electrical panel and on the compressors terminals Yearly Check the contacts of the contactors if they show signs of deterioration replace them Yearly Check that the current absorbed by the machine is within the values on the identification p...

Page 35: ...eeze thermostat see table in paragraph 6 2 User Service and anti freeze probe defective ES03 Alr Probe Tout evaporator Check contacts and replace if necessary Specialised personnel Entering water temperature probe defective ES01 Alr Probe Tin evaporator Check contacts and replace if necessary Specialised personnel Intervention of the main differential switch Electronic controller off Look for curr...

Page 36: ...an 18 F 10K Drain excess refrigerant Specialised personnel Presence of incondensable gas or air in the refrigerant circuit Presence of bubbles on the refrigerant sight glass also with subcooling values greater than 9 F 5 K Drain the refrigerant circuit create vacuum and recharge Specialised personnel Refrigerant filter clogged or thermostatic valve stuck Pipe downstream from the component covered ...

Page 37: ... temperature of the incoming water and or the flow capacity of the water by closing the exit tap of the unit a little User No refrigerant See point 8 8 Compressor suction pipe covered with frost No refrigerant High superheating low subcooling and high discharge temperature of the compressor Traces of oil on the refrigerant circuit Check the refrigerant circuit with a leak detector Repair any ruptu...

Page 38: ...m Oil Heat exchanger evaporator Steel Copper Condenser Aluminium Carbon Steel Pipe Copper Fan Aluminium Copper Steel Valve Steel Bronze Insulation Synthetic rubber without CFC EPS Polyurethane Electrical wires Copper PVC Electrical parts PVC Copper Bronze We recommend that you follow current safety norms for the disposal of each single material The refrigerant contains particles of lubrication oil...

Page 39: ...33 7425MUM753 Model CWE Q Use and Maintenance Manual Rev 15 12 WATER DIAGRAMS LEGEND CWE TANF P3 BR OPTIONS ...

Page 40: ...34 7425MUM753 Model CWE Q Use and Maintenance Manual Rev 15 13 REFRIGERANT DIAGRAMS Key CWE Q 041 068 CWE Q 100 140 ...

Page 41: ...in in 041 068 63 57 36 31 0 73 74 43 5 94 2 69 7 83 1 1 2 FM 1 1 2 FM 1 FM Models CWE Q A B C D E F G H IN OUT DRAIN mm mm mm mm mm mm mm mm 100 1955 1376 45 2588 550 238 628 466 2 VIC 2 VIC 1 FM 140 1956 1376 45 3088 550 238 628 369 2 VIC 2 VIC 1 FM Models CWE Q A B C D E F G H IN OUT DRAIN in in in in in in in in 100 76 98 54 17 1 85 101 89 21 65 9 37 24 73 14 53 2 VIC 2 VIC 1 FM 140 76 97 54 17...

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Page 44: ...CAG PURIFICATION INC Unit 2 3770B Laird Road Mississauga ON L5L 0A7 Toll 1 800 951 0777 Fax 905 820 3490 www cagcooling com email chillers cagcooling com ...

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