Related Manuals for FRIULAIR PURESTREAM CWB FC
Summary of Contents for FRIULAIR PURESTREAM CWB FC
- Page 1 PURESTREAM CHILLERS BY FRIULAIR WATER CHILLER Model: CWB FC (Free Cooling) User and Maintenance Manual...
- Page 2 Editions Record Code Revision Edition Notes 7425MUM661 09/2019 Original instructions: ENGLISH...
- 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 directions meticulously as well as the current accident-prevention laws in the country of use.
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Page 4: Table Of Contents
ONTENTS SAFETY RULES ....................1 Definitions of the symbols used ..................... 1 Warnings ..........................2 Proper use of the chiller ......................2 Instructions for using equipment und. press. conforming to PED Directive 2014/68/EU ..3 OPERATION AND MAIN COMPONENTS ............4 Refrigerant circuit ........................ - Page 5 Displaying the compressor and pump counters ..............23 5.10 Alarms ..........................23 5.10.1 Table of alarm codes ......................23 5.10.2 Displaying and resetting alarms ..................24 5.10.3 Displaying alarms history ..................... 25 TEMPERATURE REGULATION ................. 26 Factory type of regulation: Neutral zone control (chiller side) ..........26 6.1.1 Neutral zone control: how it works ..................
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Page 6: Safety Rules
SAFETY RULES 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 7: Warnings
NOTE Phrases to be emphasized that do not contain safety rules. 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. -
Page 8: Instructions For Using Equipment Und. Press. 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 properly within the temperature limits shown in the operating limits stated on the manufacturer’s name/data plate;... -
Page 9: Operation And Main Components
PERATION OMPONENTS EFRIGERANT CIRCUIT CWB FC chillers use a vapour-compression cycle in a Refrigerant circuit that essentially consists of the following components: evaporator, compressor, condenser and thermostatic expansion valve. Evaporator: this is a braise-welded plate exchanger that exchanges heat between water and a refrigerant fluid without their coming into contact with each other. -
Page 10: Free Cooling System: Working Mode
OOLING SYSTEM ORKING MODE The Free cooling equipment allows to supply completely or partially the cooling capacity produced by the chiller. The unit is equipped with two additional water coils and when the external ambient temperature is at least 5°C less the water returning from the plant, the free cooling coils can pre-cool or fully cool the water flow. -
Page 11: Identification Of The Main Components
DENTIFICATION OF THE MAIN COMPONENTS Refrigerant safety valve Compressor High pressure switch Suction temperature probe High pressure transducer Low pressure refrigerant gauge Condenser High pressure refrigerant gauge Low pressure transducer Water gauge Liquid refrigerant solenoid valve Air temperature probe Refrigerant filter 7425MUM661 Model: CWB FC - Use and Maintenance Manual Rev02... - Page 12 Liquid sight glass Pump Electronic thermostatic valve Three way valve Water differential pressure switch Valve actuator Evaporator 7425MUM661 Model: CWB FC - Use and Maintenance Manual Rev02...
- Page 13 Electrical panel cut-off switch Water inlet Electrical control panel Water outlet Power input cable openings Free cooling coils drain 7425MUM661 Model: CWB FC - Use and Maintenance Manual Rev02...
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Page 14: Installation
NSTALLATION RANSPORT The units are supplied on a wooden pallet and wrapped in a plastic film. After checking that the packing is undamaged, position the unit near the installation site and unpack it. Always keep the chiller vertical: turning it upside down can irreparably damage several parts of the unit. -
Page 15: Storage
Install the leveling feet that are supplied with the machine and which are inside the electrical panel. Please follow the assembly instructions reported into the User Manual. Without doing so, it will avoid the warranty in case of breakages. TORAGE Protect the machine from bad weather, even if packed. -
Page 16: Place Of Installation
LACE OF INSTALLATION The CWB FC unit can be installed either inside or outside. 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 17: 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 chiller Water exit from the chiller Important! Install the mechanical water filter, provided with the machine, on its input: scum and impurities can seriously damage the evaporator. -
Page 18: Use Of Ethylene Glycol As A Winter Anti-Freeze
Attention! Never work with an open flame near or inside the unit when making connections to the water system. Important! If the machine charged with pure water, is stopped during the winter, you drain water from the chiller (see paragraph 3.4.2) to avoid damage due to ice. -
Page 19: Charging The Water Circuit
3.4.3 Charging the water circuit • Check that the drain taps of the water tank are turned off; • Open all the system’s vent valves; • Open the system's shut-off devices; • Ensure that no air is on the pump suction piping and on the pump itself (see picture on the previous page);... -
Page 20: Preliminary Checks And Start-Up
PRELIMINARY CHECKS AND START-UP RELIMINARY CHECKS AND PREPARATION FOR THE FIRST START Important! At start-up, it is necessary to give off air from inlet water pipe using the air relief valve (see paragraph 3.4.1 Recommended water system). Before starting up the unit, do the following: •... -
Page 21: Start-Up Under Critical Conditions
• Check that the alarm symbol does not appear on the electronic controller; if this should happen, press the ESC button to display the type of alarm triggered. 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 A02, when you press the ESC button. -
Page 22: Electronic Controller
ELECTRONIC CONTROLLER The electronic controller shows a series of icons representing chillers main components: Electronic controller It manages: • The functioning of the compressors to ensure that the water produced has a constant temperature; • The speed of the fans; •... -
Page 23: Main Functions Of The Electronic Controller Buttons And Meanings Of The Icons
AIN FUNCTIONS OF THE ELECTRONIC CONTROLLER BUTTONS AND MEANINGS OF THE ICONS Button/Icon Functions Accesses the menu. Goes to the next menu level. ENTER Goes to the mode for editing the selected parameter. Confirms value entered for a parameter. Accesses the list of active alarms. When navigating the menus, returns to the previous menu level (pressed once). -
Page 24: Changing The Type Of Restart After A Power Failure
• Use the DOWN key until the PAR-Parameters menu is reached, press ENTER • Use the DOWN key until the rEG-Regulation menu is reached, press ENTER • Press ENTER at SEt-Setpoint; the description, the code and the value of the cooling temperature setpoint is displayed;... -
Page 25: Changing The Serial Address (Modbus And Can)
ο EQUA: when the power returns, the machine will work in the same way as before the power failed; ο ON: when the power returns, the machine will start; ο OFF: when the power returns, the machine will stay off. •... - Page 26 • To exit press ESC until the main screen is displayed. According to the configuration of the chiller, the electronic controller shows the following signals. Numbering Function Analog Input Discharge Refrigerant Temperature Circuit 1 Liquid Temperature Circuit 1 Suction Refrigerant Temperature Circuit 1 Discharge Refrigerant Pressure Circuit 1 Suction Refrigerant Pressure Circuit 1 -------------...
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Page 27: Display Expansion Valve Working Parameters
Digital Output Compressor 1 Compressor 2 Fan 5-8 (free cooling side) Pump ------------- ------------- Refrigerant Liquid Valve Circuit 1 General Alarm Opening free cooling valve Closing free cooling valve ------------- ------------- ISPLAY EXPANSION VALVE WORKING PARAMETERS All CWB FC units are fitted with electronic expansion valves and the electronic control displays living working opening and setting for each valve. -
Page 28: Display Software Release Of The Electronic Controller
ISPLAY SOFTWARE RELEASE OF THE ELECTRONIC CONTROLLER • From the main screen press ENTER • Use the DOWN key to reach the SER-Service menu, press ENTER • From the SER INF-Software info menu press ENTER and the software version installed on the control tool can be viewed; •... -
Page 29: Displaying And Resetting Alarms
Circuit 1 compressors overload Compressors 1-2 Internal Protection Circuit 1 cond. fans overload Fan 1-2 Internal Protection Alr. Probe Tin Evaporator Alr. Probe Tout Evaporator Alr. Probe Discharge Press Circuit 1 Alr. Probe Tout Alr. Probe Remote Set Alr. Probe Suction Press Circuit 1 Alr. -
Page 30: Displaying Alarms History
5.10.3 Displaying alarms history • From the main screen press ENTER • Use the DOWN key to reach the ALA-Alarms menu, press ENTER • Use the DOWN key to reach the AHS-Alarm History menu, press ENTER • Use the UP arrows to scroll the list of alarms attended. -
Page 31: Temperature Regulation
TEMPERATURE REGULATION ACTORY TYPE OF REGULATION EUTRAL ZONE CONTROL CHILLER SIDE All CWB FC are set up with a neutral zone regulation based on evaporator outlet water temperature. 6.1.1 Neutral zone control: how it works The neutral zone regulation is standard on CWB FC and it is done on evaporator outlet water temperature. -
Page 32: Neutral Zone Regulation Based On Outlet Water Temperature (Standard)
NOTE The safety devices setting can only be changed at a higher level of programming of the electronic control: please request the password by contacting our company. CWB FC units can operate with water and ethylene glycol mixtures up to a concentration of 50%. Anyway, for glycol concentrations higher than 30%, 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... -
Page 33: Recommended Setting For Operating With Low Water Temperatures
6.3.1 Recommended setting for operating with low water temperatures For operating with low water temperature, it is recommended to set the following parameters: Parameter Description Unit Desired water °C temperature [°F] [14] [19,4] [23] [26,6] [32] [35,6] [41] [44,6] Cooling temperature °C setpoint [°F]... -
Page 34: Safety Devices
SAFETY DEVICES CWB FC 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 35: Resetting The High-Pressure Pressure Switch
ESETTING 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 condensation coils;... -
Page 36: Operating Limits
OPERATING LIMITS CWB FC 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 Fans); they are also prepared to produce water at low temperature: in this case, it is necessary to contact our company (see paragraph 6.2 Low water temperatures (<32°F/0°C)). - Page 37 CONDENSING CONTROL LIMITS Legend Mandatory ethylene glycol - please contact our company Mandatory continuos fan(s) speed control - electronic fan(s) (CE) 7425MUM661 Model: CWB FC - Use and Maintenance Manual Rev02...
- Page 38 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 company. Warning! External air temperatures lower than +20°C//68°F can only be achieved with condensation control and continuous fan speed control.
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Page 39: Maintenance, Inspections And Periodic Checks
MAINTENANCE, INSPECTIONS AND PERIODIC CHECKS 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 range Check for the presence of any alarm signals Daily... -
Page 40: Troubleshooting
TROUBLESHOOTING Cause Alarm signal or 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 41 Cause Alarm signal or Solution Execution symptom 2. (continue) The compressor doesn’t start Look for short circuits in the motor windings of the compressor. Specialised Check for possible over- personnel Circuit breaker protection of the absorption of current due to Circuit 1 compressors thermal compressors open (QC1, QC2) too low voltage;...
- Page 42 Alarm signal or Cause Solution Execution symptom 4. Intervention of the water differential pressure switch Taps of the machine are turned off Open the valves User Evap. Flow switch alarm Specialised personnel Water circulation pump blocked or Unlock or replace the pump defective Evap.
- Page 43 Cause Alarm signal or symptom Solution Execution 7. The unit is working without ever stopping Reduce the thermal load. Reduce the temperature of the incoming water and/or Excessive thermal load. User the flow-capacity of the water by closing the exit valve of the unit a little.
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Page 44: Dismantling The Chiller
DISMANTLING THE CHILLER 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 45: Water Diagrams
ATER IAGRAMS LEGEND CWB FC 7425MUM661 Model: CWB FC - Use and Maintenance Manual Rev02... -
Page 46: Refrigerant Circuit
REFRIGERANT CIRCUIT LEGEND CWB FC 7425MUM661 Model: CWB FC - Use and Maintenance Manual Rev02... -
Page 47: Dimensional Drawings
IMENSIONAL RAWINGS CWB 100-135-150-160 FC Unit Drain* [mm] 2204 1982 3004 229,5 1071 2 1/2” VIC 2 1/2” VIC 1” GAS FM [in] 86.77 78.03 118.27 2.09 6.26 9.04 22.36 42.17 1.22 2 1/2” VIC 2 1/2” VIC 1” GAS FM CWB 190-225 FC Unit Drain*... - Page 48 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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