Related Manuals for FRIULAIR PURESTREAM CHILLERS CWE-Q Series
Summary of Contents for FRIULAIR PURESTREAM CHILLERS CWE-Q Series
- Page 1 WATER CHILLER Model: CWE-Q Use and Maintenance Manual 7425MUM753 - Use and Maintenance Manual Rev. 15 Model: CWE-Q...
- Page 2 Editions Record Code Revision Edition Changes 7425MUM753 11/2020 Original instructions: ITALIAN EN Translation of the original instructions...
- Page 3 Dear Customer, Thank you for the trust you have placed in us. Please read this manual carefully to obtain the best performance from our product. In order to avoid incorrect operating conditions and danger for the operators, it is essential that you follow the instructions meticulously as well as the current accident-prevention laws in the country of use.
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Page 5: Table Of Contents
CONTENTS SAFETY RULES ...................... 1 Definitions of the symbols used ....................1 Warnings ..........................2 Proper use of the chiller ......................2 Instructions for using equipment under pressure conforming to PED Directive 2014/68/EU . 3 OPERATION AND MAIN COMPONENTS ............... 4 Refrigerant circuit ........................ - Page 6 SAFETY DEVICES ....................22 Calibration of the safety devices and type of rearm .............. 22 Rearming the high-pressure pressure switch ................ 23 OPERATING LIMITS ..................... 24 Minimum water flow ....................... 26 SEPR - SEASONAL ENERGY PERFORMANCE RATIO ........27 MAINTENANCE, INSPECTIONS AND PERIODIC CHECKS ........ 28 TROUBLESHOOTING ...................
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Page 7: Safety Rules
AFETY ULES EFINITIONS OF THE SYMBOLS USED Read this use and maintenance manual carefully before performing any repairs on the chiller. Warnings of a general character; risk of danger or possibility of damaging the machine, pay particular attention to the phrase following this symbol. Risk of electrical danger;... -
Page 8: Warnings
This chiller has been carefully designed and constructed to be environmentally friendly: Refrigerants without CFC; • • Expanded foam insulation without CFC; Energy-saving techniques; • Reduced noise; • • The chiller and its packing materials are recyclable. In order not to hinder our efforts, the user is required to obey the simple ecological warnings indicated by this symbol. -
Page 9: Instructions For Using Equipment Under Pressure Conforming To Ped Directive 2014/68/Eu
NSTRUCTIONS FOR USING EQUIPMENT UNDER PRESSURE CONFORMING TO PED D 2014/68/EU IRECTIVE The proper use of equipment under pressure is an essential prerequisite for ensuring safety. To this end, the user must proceed as follows: Use the equipment within the temperature range outlined in the operating limits on the •... -
Page 10: Operation And Main Components
PERATION OMPONENTS EFRIGERANT CIRCUIT Operation of the CWE-Q chillers is based on a vapour compression cycle implemented within the chiller circuit and made up of the following components - evaporator, compressor, condenser and thermostatic expansion valve. Evaporator: this is a braise-welded plate that exchanges heat between water and a refrigerant fluid without their coming into contact with each other. -
Page 11: Water Circuit
ATER CIRCUIT The water circuit mainly consists of: evaporator, water strainer and hydraulic pipes. The water flows first into the evaporator, where it is chilled, and then it is sent to the system. A differential pressure switch on the evaporator checks that the flow of water is sufficient and stops the compressors if the flow-capacity of the water does not ensure the good functioning of the exchanger. -
Page 12: Cwe-Q Units: Identification Of The Main Components
CWE-Q UNITS IDENTIFICATION OF THE MAIN COMPONENTS 2.7.1 Version with P3 TANF LSM BR Non ferrous atmospheric water circuit with P3 Pump , plastic tank, mechanical water level switch and manual regulating valve. 04 High pressure switch 20 Liquid receiver (OPT) 61 Power input 06 Compressor 22 Disconnector switch... -
Page 13: Spare Parts
PARE PARTS Spare parts list is printed on a dedicated sticker applied inside the chiller. On this 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. -
Page 14: Installation
NSTALLATION RANSPORT The units are provided with protective corner sections in cardboard and transparent film. After checking that the packing is undamaged, position the unit near the installation site and unpack it. The units can be handled using tubes and belts or a forklift truck. Always keep the chiller vertical: turning it upside down can irreparably damage several parts of the unit. -
Page 15: Place Of Installation
LACE OF INSTALLATION The CWE-Q unit can be installed either inside or outside. Attention! For CWE-Q 100÷140 install the 4 rubber mats supplied loose and placed inside the electrical panel, under the feet of the unit. To determine the best place to install the unit, it is important to consider the following aspects: The dimensions and source of the water pipes;... -
Page 16: Water Connections
ATER CONNECTIONS Connect the machine to the water pipes following the instructions located near its water fittings (see figures). Water input to the machine Water exit from the machine NOTE It is a good rule that the diameters of the arriving and departing pipes be not less than the water fittings. -
Page 17: Use Of Ethylene Glycol As A Winter Anti-Freeze
Pump venting screws Pump drain screw 3.4.2 Use of ethylene glycol as a winter anti-freeze Instead of emptying the system in winter, you can charge the system with a mixture of water and a suitable percentage of ethylene glycol, chosen as a function of the lowest expected temperature of the outside air. -
Page 18: Electrical Connections
LECTRICAL CONNECTIONS The machine must be connected to the electricity following the electrical diagram and conforming to the current laws and regulations in the place of installation. The voltage, frequency and number of phases must conform to the data shown on the •... -
Page 19: Preliminary Checks And Start-Up
RELIMINARY HECKS TART RELIMINARY CHECKS AND PREPARATION FOR THE FIRST START Before starting up the unit, it is a good idea to do the following: • Check that the water shut-off valves are open; Check that the pressure shown on the manometer with the pumps stopped is at least •... -
Page 20: Start-Up Under Critical Conditions
2. Check that the alarm symbol does not light up on the electronic controller; Attention! At the first start-up there could be an alarm for an incorrect sequence of the R-S-T phases, indicated by the initials AL27. This safety system prevents the compressor from turning in the wrong direction. Note: the phase sequence relay inside the electrical panel must have both LEDS lit to confirm the correct electromagnetic field. -
Page 21: Electronic Controller
LECTRONIC ONTROLLER The electronic controller has two 7-segment displays and a series of icons. It manages: The functioning of the compressor to ensure that the water produced has a constant • temperature; The prevention of the high-pressure alarm; • The prevention of the low pressure alarm. •... -
Page 22: Switching On/Off
Led/Display Function Indicates the state of compressor: On: compressor ON Off: compressor OFF Flashing: setting setpoint mode or compressor protection °Celsius unit Unit of measure in Bar Indicates the state of the chiller: On: chiller OFF Off: chiller ON Alarm active Cooling operation (CHILLER mode) Heating operation (not used on CWE-Q) Domestic hot water function (not used on CWE-Q) - Page 23 A parameter set the position of the neutral zone of regulation: Before or after the setpoint in function of the active mode; • • At the setpoint. For better understand the regulation mode, two steps must be described: • Switch on; Switch off.
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Page 24: Changing The Cooling Set Point
HANGING THE COOLING SET POINT To assign a value lower than to 41 °F//5 °C, the minimum set point value must be changed. To do this contact the manufacturer. 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 temperature;... -
Page 25: Displaying And Resetting Alarms
Manual rearm: these alarms must be reset, which can only be done when the alarm • condition no longer exists; only then can the machine resume operation; Automatic rearm: the alarm is automatically deactivated as soon as the alarm • condition ceases and the machine restarts by itself. -
Page 26: Table Of Alarm Codes
5.7.2 Table of alarm codes Code Alarm description Type of rearm AL01 Water low temperature Semiautomatic AL02 Water high temperature Semiautomatic AL03 Water differential pressure switch Manual AL04 High pressure from pressure switch Manual AL06 High pressure from pressure transducer Automatic AL07 Low pressure from pressure transducer... -
Page 27: Parameters Changing
ARAMETERS CHANGING NOTE The parameters setting can only be changed at a higher level of programming of the electronic control: please request the password by contacting our company. After contact our company, follow this procedure: Starting from the main screen press for 4 seconds;... -
Page 28: Safety Devices
AFETY EVICES CWE-Q chillers have a series of safety devices that limit the machine's temperature and pressure values to ensure that it operates within the anticipated limits and to avoid dangerous situations. Here is a list of dangerous situations, including the relative safety device and its location. Dangerous situation Safety device Location... -
Page 29: Rearming The High-Pressure Pressure Switch
EARMING THE HIGH PRESSURE PRESSURE SWITCH The intervention of the high-pressure pressure switch is the only case in which, in addition to manually rearming the electronic controller, it is also necessary to reset the pressure switch itself. The high-pressure pressure switch is located in the compressor compartment on the uninsulated copper pipe that goes from the compressors to the condensing coils;... -
Page 30: Operating Limits
PERATING IMITS CWE-Q series units feature broad operating limits in relation to the temperature of the outside air, thanks to the condensation control (also see paragraph 2.4); they are also prepared to produce water at low temperature: in this case, it is necessary to contact our company (see paragraph 5.10 Low water temperatures (<32°F/0°C)). - Page 31 DIAGRAMS 7425MUM753 Model: CWE-Q - Use and Maintenance Manual Rev. 15...
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Page 32: Minimum Water Flow
INIMUM WATER FLOW It is recommended to grant a minimum water flow to the chiller in order to avoid serious damages to the evaporator and to the whole machine (see following table). Model CWE-Q Minimum water flow [gal/min] 11,2 15,9 25,1 35,2 Minimum water flow [m... -
Page 33: Sepr - Seasonal Energy Performance Ratio
SEPR - SEASONAL ENERGY PERFORMANCE RATIO (EU) 2016/2281 CCORDING TO OMMISSION EGULATION 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 SEPR 4,38 4,97 4,89 5,14... -
Page 34: Maintenance, Inspections And Periodic Checks
AINTENANCE NSPECTIONS ERIODIC HECKS To keep the machine running properly and providing the guaranteed performance required, it is necessary to make some periodic checks. Operation Frequency Execution Check that the temperature of the water produced is in the Daily required interval Check for the presence of any alarm signals Daily Check the functioning of the fans... -
Page 35: Troubleshooting
ROUBLESHOOTING Alarm signal or Cause Solution Execution symptom 1. The unit does not start User Contacts of the main differential switch Electronic controller off Close the contacts open. User Unit's electrical panel cut-off switch Electronic controller off Close the contacts open. - Page 36 Alarm signal or Cause Solution Execution symptom 2. (continue) The compressor doesn’t start Look for short circuits in the motor windings of the compressor. Intervention of the thermal Specialised Check for possible over- protection inside the compressor personnel AC21 absorption of current due to too Compressors thermal low voltage;...
- Page 37 Alarm signal or Cause Solution Execution symptom 6. Fans don't start Very low outside air temperatures and Fan icon off. The machine is working consequent intervention of the Condensation pressure anyway condensation control normal Specialised personnel Check the voltage output from the No voltage output from the fan-speed Fan icon on and fans regulator and replace, if...
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Page 38: Dismantling The Chiller
ISMANTLING HILLER If the chiller is being dismantled, you must separate it into parts of homogeneous material. The following table lists the main materials of the various components of the machine. Part Material Refrigerant fluid R410A, Oil Panelling and supports Carbon steel, epoxy paint Chiller compressor Steel, Copper, Aluminium, Oil... -
Page 39: Water Diagrams
ATER IAGRAMS LEGEND CWE TANF P3 BR + OPTIONS 7425MUM753 Model: CWE-Q - Use and Maintenance Manual Rev. 15... -
Page 40: Refrigerant Diagrams
EFRIGERANT IAGRAMS CWE-Q 041÷068 CWE-Q 100÷140 7425MUM753 Model: CWE-Q - Use and Maintenance Manual Rev. 15... -
Page 41: Dimensional Drawings
IMENSIONAL RAWINGS Models DRAIN CWE-Q [mm] [mm] [mm] [mm] [mm] [mm] [mm] 041-068 1600 1890 1”1/2 FM 1”1/2 FM 1” FM Models DRAIN CWE-Q [in] [in] [in] [in] [in] [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”... - 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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