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Installation use and maintenance manual

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Содержание LCWC055

Страница 1: ...GB Installation use and maintenance manual...

Страница 2: ...rements General guidelines for plumbing connections Water connection to the evaporator Instructions for the filling up of the rank Safety valve drain pipes Electrical connections Generalities Remote c...

Страница 3: ...SETTING OPERATING PARAMETERS Generalities Maximum pressure switch Minimum pressure switch Service thermostat Antifreeze thermostat Anti recycle timer ROUTINE MAINTENANCE AND CHECKS Warnings Generalit...

Страница 4: ...RG66001652_REV 02 4 LCW LCR Dichiarazione di conformit La dichiarazione di conformit allegata ad ogni macchina Declaration of conformity The declaration of conformity is attached to each unit sold...

Страница 5: ...ine servicing Field of Application The LCW units are designed to cool heat water and solutions containing up to 30 glycol percentage by weight in civil industrial and technological air conditioning sy...

Страница 6: ...eat exchangers with braze welded AISI 304 austenitic stainless steel plates and connections made of AISI 304 L characterised by a reduced carbon content to facilitate brazing Braze welded plate exchan...

Страница 7: ...erature set point of the chiller inlet water temperature o Alarm management High low pressure Antifreeze Flow switch Pump alarm o Alarm signalling o Display of operating parameters o Antifreeze protec...

Страница 8: ...circuit Plate heat exchanger Scambiatore a piastre Thermostatic valve Valvola termostatica Filter dryer Filtro deidratore Liquid receiver Ricevitore di liquido Sight glass Spia di flusso Check valve V...

Страница 9: ...heat exchanger Scambiatore a piastre Thermostatic valve Valvola termostatica Filter dryer Filtro deidratore Liquid receiver Ricevitore di liquido Sight glass Spia di flusso Check valve Valvola di non...

Страница 10: ...cuit Plate heat exchanger Scambiatore a piastre Thermostatic valve Valvola termostatica Filter dryer Filtro deidratore Liquid receiver Ricevitore di liquido Sight glass Spia di flusso Check valve Valv...

Страница 11: ...separator Separatore liquido Plate heat exchanger Scambiatore a piastre Thermostatic valve Valvola termostatica Filter dryer Filtro deidratore Liquid receiver Ricevitore di liquido Sight glass Spia di...

Страница 12: ...nnected from the power supply Inspection Conveyance Siting Inspection on receipt On receiving the unit check that it is perfectly intact the machine left the factory in perfect conditions immediately...

Страница 13: ...installation As special care has been taken in the sound insulation and sealing of the components and hot parts in general they need not be installed in dedicated rooms It is advisable to place a rigi...

Страница 14: ...l mesh filter incoming pipes with a mesh not to exceed 1 mm to protect the exchanger from scale or impurities present in the pipes This prescription is particularly important at first start up air ven...

Страница 15: ...inertia of the water is lower it is a good idea to check that the water content in the section delivering to users satisfies the condition below Ns Sh Cc V V water content in user section m3 Sh speci...

Страница 16: ...s concerning the cavitation of the pump It is of fundamental importance for the installer to follow and check the instructions written below stepwise so as to avoid every kind of risks concerning the...

Страница 17: ...e Only qualified personnel may choose and install the piping and carry out the final braze welding operations as per current laws and regulations Said personnel must issue a new declaration of conform...

Страница 18: ...the fact that in the case of rising lines the pressure drop due to the travel height reduces the undercooling of the liquid resulting in the possible formation of flash vapours in this case choose a l...

Страница 19: ...m the pressure in the tank corresponds to the T of the surrounding environment a withdrawal of refrigerant charge will cause pressure drops which will be associated with withdrawal of refrigerant char...

Страница 20: ...lenoid valve of the charging machine allows the passage of refrigerant liquid toward the charging gun and flow is measured by the volumetric flow rate gauge the quantity in weight is calculated by mea...

Страница 21: ...ring the refrigerant Refrigerants all tend to dissolve in oil compressor sump in percentages that are directly proportional to increases in pressure and decreases in the T of the oil itself Charles La...

Страница 22: ...n of the lubricant in any case first check the compatibility between the crankcase capacity and the required charge volumes Safety valve drain pipes A safety valve is present on the refrigerant circui...

Страница 23: ...warranty The electrical connections must be made in accordance with the information shown in the wiring diagram provided with the unit and current regulations An earth connection is mandatory The inst...

Страница 24: ...ble the machine to start Make sure there are no refrigerant leaks that may have been caused by accidental impacts during transport and or installation Check the power supply to the crankcase heating e...

Страница 25: ...running in the wrong direction in the case of a phase sequence error Position the Local Remote selector SLR situated at the top middle of the electric board on LOCAL and switch on the power by turnin...

Страница 26: ...he service thermostat CHECKING THE REFRIGERANT LEVEL After a few hours of operation check whether the liquid level indicator has a green crown a yellow colour indicates the presence of humidity in the...

Страница 27: ...r oil of the type and viscosity indicated on the compressor rating plate For no reason should oil of a different type be introduced into the oil circuit The difference between the Dew Point and Bubble...

Страница 28: ...5 45 Below 25 C the condensation pressure control is required Evaporator inlet heating mode 25 45 Without antifreeze products Condenser inlet heating mode 12 25 in heat pump operation heat exchangers...

Страница 29: ...Maximum operating T indoor environment 50 C Minimum operating T 10 C Maximum operating P Low pressure side 22 6 bar r Supply voltage 10 of rating plate voltage Maximum stocking T 50 C Minimum stockin...

Страница 30: ...arameters and control system settings configurable by means of the microprocessor control are password protected if they have a potential impact on the integrity of the unit TABLE II SETTING OF CONTRO...

Страница 31: ...pressors operation as a function of the reading of the inlet water temperature of the chilling unit return from the system For further details refer to the microprocessor control section in the manual...

Страница 32: ...MUST ALWAYS BE PERFORMED BY QUALIFIED PERSONNEL Before carrying out any work on the unit or accessing internal parts make sure you have disconnected it from the mains electricity supply The upper part...

Страница 33: ...ed to fall below the freezing point of the fluid used Every 6 months Check whether the water in the circuit needs to be replenished Every 6 months Check the efficiency of the flow switch or differenti...

Страница 34: ...150 Pa of absolute pressure with a capacity of approximately 10 m3 h If such a pump is available one evacuation will normally suffice to achieve an absolute pressure of 150 Pa If there is no such vac...

Страница 35: ...ee constituents Introduce refrigerant through the inlet in the liquid line A unit that was originally charged with R407C in the factory cannot be charged with R22 or other refrigerants without the wri...

Страница 36: ...e been triggered Check whether any alarms are signalled on the microprocessor control panel eliminate the causes and restart the unit The phase sequence is wrong Invert two phases in the primary power...

Страница 37: ...opens and adjust it if necessary If it does not respond replace it Filter clogged Pressure drops upstream and downstream from the filter should not exceed 2 C If they do replace the filter Low condens...

Страница 38: ...9282 10295 11810 14015 15441 17715 20841 Pressure drop evaporator side kPa 48 4 48 4 48 4 47 1 41 7 32 3 39 0 Condenser water flow rate 1 l h 3588 5 4049 2 4587 5 5430 1 6098 5 6984 4 8236 2 Pressure...

Страница 39: ...0708 43670 47046 50931 Pressure drop evaporator side kPa 41 7 43 1 53 8 37 7 35 0 36 3 40 4 40 4 Condenser water flow rate 1 l h 9331 8 10251 6 11803 7 14313 4 16128 3 17359 8 18633 9 20174 9 Pressure...

Страница 40: ...drop evaporator side kPa 48 4 48 4 48 4 47 1 41 7 32 3 39 Condenser water flow rate 1 l h 5307 1 5855 3 6608 2 7988 5 8953 0 10263 7 20101 Pressure drop condenser side kPa 45 56 25 29 25 40 5 51 75 49...

Страница 41: ...side kPa 41 7 43 1 53 8 37 7 35 36 3 40 4 40 4 Condenser water flow rate 1 l h 13810 15183 17492 21193 23907 25722 27617 29886 Pressure drop condenser side kPa 41 6 50 4 61 5 32 9 37 4 46 1 54 9 54 9...

Страница 42: ...2 2 Oil charge compressor dm3 3 3 3 3 4 1 4 1 6 5 8 8 Evaporator type BPHE BPHE BPHE BPHE BPHE BPHE BPHE Number of evaporators 2 2 2 2 2 1 1 Water content dm3 5 5 6 1 6 6 7 1 7 9 32 33 5 Type of refri...

Страница 43: ...8 Evaporator type BPHE BPHE BPHE BPHE BPHE BPHE BPHE BPHE Number of evaporators 1 1 1 1 1 1 1 1 Water content dm3 34 1 36 2 38 1 67 8 70 6 73 5 73 5 73 5 Type of refrigerating circuit connections RTK...

Страница 44: ...40010 Bentivoglio BO Via Romagnoli 12 a Tel 051 8908111 Fax 051 8908122 www galletti it...

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