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Disposal

The unit is made of metal and plastic parts. All these parts must be disposed of in accordance with the local
regulations in terms of disposal. Lead batteries must be collected and taken to specific refuse collection centres.

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Содержание EWWQ380B-SS

Страница 1: ...Water cooled screw chillers EWWQ380B SS EWWQC20B SS EWWQ420B XS EWWQC21B XS 50Hz Refrigerant R 410A Original Instructions Installation Operation and Maintenance Manual D EIMWC00508 16EN...

Страница 2: ...ional 15 Operation 17 Operator s responsibilities 17 Description of the machine 17 Description of the refrigeration cycle 17 Description of the refrigeration cycle with partial heat recovery 22 Contro...

Страница 3: ...recovery exchangers 10 Fig 4 Adjusting the safety flow switch 12 Fig 5 User connection to the interface terminal board 15 Fig 6 Refrigeration cycle of the EWWQ B SS EWWQ B XS DUAL Fr4 unit 18 Fig 7 Re...

Страница 4: ...UNIT THE OPERATOR MUST BE TRAINED AND INSTRUCTED ON HOW TO USE THE UNIT THE OPERATOR MUST STRICTLY FOLLOW ALL INSTRUCTIONS SAFETY REGULATIONS AND LIMITATIONS REGARDING THE USE OF THE UNIT Key to symb...

Страница 5: ...ensure proper installation and maintenance of the machine without any risk to people animals and or objects This manual is an important supporting document for qualified personnel but it is not inten...

Страница 6: ...ture 20 C Maximum ambient temperature 41 C Max R H 95 not condensing ATTENTION Storing below the minimum temperature mentioned above may cause damage to components such as the electronic controller an...

Страница 7: ...pe connected to the heat exchanger inlet The machine is supplied with safety valves that are installed on both the high and the low pressure sides of the refrigerant circuit In case of sudden stop of...

Страница 8: ...D EIMWC00508 16EN 8 48 Fig 1 Lifting the unit...

Страница 9: ...d animals it is advisable to install protection gratings for the compressor section To ensure the best possible performance on the installation site the following precautions and instructions must be...

Страница 10: ...dition 7 Another filter must be installed on the machine inlet water pipe near the evaporator and heat recovery if installed The filter prevents solid particles from entering the heat exchanger as the...

Страница 11: ...ction methods should be considered when designing the system as a whole 1 Continuous water flow circulation inside piping and exchangers 2 Addition of an appropriate amount of glycol inside the water...

Страница 12: ...alves that are installed on each circuit both on the evaporator and on the condenser The purpose of the valves is to release the refrigerant inside the refrigerant circuit in the event of certain malf...

Страница 13: ...rference all control wires must be installed separately from the power cables Use separate electrical conduits for this purpose CAUTION Before servicing the machine in any way open the general disconn...

Страница 14: ...t supplied with the unit the power line of each pump must be provided with a magnetothermic switch and a control switch Water pump control Connect the control contactor coil power supply to terminals...

Страница 15: ...ables so as not to induce interference with the electronic controller Current limitation The machine s load can be varied by means of a 4 20 mA external signal from an external device In this case cur...

Страница 16: ...tputs DPS Double Set Point EF Esternal Fault EFS Evaporator Flow Switch EFS 1 Evaporator Flow Switch 1 EFS 2 Evaporator Flow Switch 2 GA General Alarm KPC Condensator Water Pump KPE 1 Evaporator Water...

Страница 17: ...by adapting the refrigerant load to all foreseen operating conditions Expansion valve The machine has a an electronic expansion valve which is controlled by an electronic device called a Driver that o...

Страница 18: ...TER OUTLET Y5 Y6 Fig 6 Refrigeration cycle of the EWWQ B SS EWWQ B XS DUAL Fr4 unit LOW PRESSURE SWITCH HIGH PRESSURE SWITCH F12 22 LP F13 23 HP LOW PRESSURE TRANSDUCER 0 30 bar HIGH PRESSURE TRANSDUC...

Страница 19: ...TOR EX8 ELECTRONIC EXP VALVE WATER INLET WATER OUTLET Y5 LOW PRESSURE SWITCH HIGH PRESSURE SWITCH F12 22 LP F13 23 HP LOW PRESSURE TRANSDUCER 0 30 bar HIGH PRESSURE TRANSDUCER 0 45 bar LEAVING WATER T...

Страница 20: ...Q B XS DUAL 3200 unit LOW PRESSURE SWITCH HIGH PRESSURE SWITCH F12 22 LP F13 23 HP LOW PRESSURE TRANSDUCER 0 30 bar HIGH PRESSURE TRANSDUCER 0 45 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATU...

Страница 21: ...Q B XS Mono 3200 unit LOW PRESSURE SWITCH HIGH PRESSURE SWITCH F12 22 LP F13 23 HP LOW PRESSURE TRANSDUCER 0 30 bar HIGH PRESSURE TRANSDUCER 0 45 bar LEAVING WATER TEMPERATURE ENTERING WATER TEMPERATU...

Страница 22: ...he cycle Controlling the partial recovery circuit and installation recommendations The partial heat recovery system is not managed and or controlled by the machine The installer should follow the sugg...

Страница 23: ...upper satellite In this process the suction gas penetrates into the profile between the rotor the teeth of the upper satellite and the compressor body The volume is gradually reduced by compression of...

Страница 24: ...otor Once the flute volume is closed off from the suction chamber the suction stage of the compression cycle is complete 1 2 3 Compression As the main rotor turns the volume of gas trapped within the...

Страница 25: ...D EIMWC00508 16EN 25 48 FR3200 FR4 Compressor Fig 13 Refrigeration capacity control mechanism of compressor Fr3200 Fr4 Load Unload...

Страница 26: ...the force of the spring and moves the slide valve towards the maximum load position Energised open De energised closed Unload compressor High pressure oil is admitted to the capacity control cylinder...

Страница 27: ...oor block disconnector switch terminals The power supply voltage must be the same as that on the nameplate Maximum allowed tolerance 10 Voltage unbalance between the three phases must not exceed 3 The...

Страница 28: ...respectively the average is 383 386 392 387 Volts 3 thus the unbalance percentage is 29 1 100 387 387 392 x below the maximum allowed 3 Electrical heaters power supply Each compressor comes with an e...

Страница 29: ...valve inlet pipe is completely fully without bubbles and that the humidity indicator shows Dry Any bubbles inside the liquid sight glass might indicate a low refrigerant level or an excessive pressure...

Страница 30: ...s to remain inactive during the winter season One must remember that once the machine s power supply has been cut off the anti freeze electrical resistance cannot function Do not leave the evaporator...

Страница 31: ...complete check on the unit and on the state of the pressurised refrigeration circuits carried out after ten years of use in compliance with Italian law Lgs Decree 93 2000 for all groups belonging to c...

Страница 32: ...200 compressor SUCTION ECONOMIZER PORT LIFTING ECONOMIZER PORT HIGH PRESSURE SWITCH LIFTING LOADING SOLENOID VALVE UNLOADING SOLENOID VALVE DISCHARGE TRANSDUCER FOR HIGH PRESSURE OIL FILTER TRANSDUCER...

Страница 33: ...hen the pressure drop across it reaches 2 0 bar 5 Check for any dissolved metals 6 TAN Total Acid Number 0 10 No action Between 0 10 and 0 19 Replace anti acid filters and re check after 1000 running...

Страница 34: ...er dryer cartridges have not been correctly inserted 10 Replace the cover gasket Do not allow any mineral oil onto the filter gasket so as not to contaminate the circuit Use only compatible oil for th...

Страница 35: ...itch Q1 or Q2 Rplacement of the oil filter ATTENTION The lubrication system has been designed to keep most of the oil charge inside the compressor During operation however a small amount of oil circul...

Страница 36: ...id injection valves 17 Disconnect the vacuum pump from the compressor 18 Remove the warning label from to the general disconnecting switch 19 Close the general disconnecting switch Q10 to supply power...

Страница 37: ...onnect the vacuum pump and evacuate the compressor up to a vacuum of 230 Pa 15 On reaching the above vacuum level close the vacuum pump valve 16 Open the system s delivery suction and liquid injection...

Страница 38: ...the machine has lost refrigerant it is necessary to first establish the causes before carrying out any replenishment operation The leak must be found and repaired Oil stains are a good indicator as t...

Страница 39: ...on pressure increase the microprocessor will control the compressor load in order to allow it to function even if the compressor flow gas must be reduced It also contributes to the oil control logic O...

Страница 40: ...___ bar Suction gas temperature _____ C Suction superheating _____ C Condensation saturated temperature _____ C Discharge superheating _____ C Liquid temperature _____ C Subcooling _____ C _____ C Cir...

Страница 41: ...the machine in an inappropriate manner beyond its operating limits or not performing proper maintenance according to this manual can void the warranty Observe the following points in particular in or...

Страница 42: ...an authorized agency Please check with your local requirements Important information regarding the refrigerant used This product contains fluorinated greenhouse gases Do not vent gases into the atmosp...

Страница 43: ...gerant charge Factory Field h Greenhouse gas emission of the total refrigerant charge expressed as tonnes of CO2 equivalent m Refrigerant type n GWP Global Warming Potential p Unit serial number 2 The...

Страница 44: ...osal The unit is made of metal and plastic parts All these parts must be disposed of in accordance with the local regulations in terms of disposal Lead batteries must be collected and taken to specifi...

Страница 45: ...D EIMWC00508 16EN 45 48...

Страница 46: ...D EIMWC00508 16EN 46 48...

Страница 47: ...D EIMWC00508 16EN 47 48...

Страница 48: ...of its content and the products and services presented therein Specification are subject to change without prior notice Refer to the data communicated at the time of the order Daikin Applied Europe S...

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