Liasoning Service

679409

Liasoning Service

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Supply Of Retrofitting And Condenser Coil Replacement In Pu-1 @ Ora Ss Equipment # 30346954 Ora Sustation Package Unit # 1 Manufacturer # Carr Ier Model Numer # 50Tj-028-933M Serial Numer # 3508 S 04379 Capacity # 25 Tr Serving Area # Control Room 1.#Performance Testing Of T He Retrofitted Refrigerant Circuits Shall E Done And Check All Parameters Such As Compressor Starting And Running Currents, Refriger Ant Suction And Discharge Pressures, Supply Air Temperature, Lp Set Point, Hp Set Point Etc. Compare These Values With The Values Ot Ained With R-22 Prior To Retrofit. If Any Anormality Is Oserved, It Shall E Rectified. 2.#The Packaged Unit Casing Shall E Affixed W Ith A Lael In Standard A4 Size In A Visile Location Indicating #Retrofitted Unit, New Refrigerant: R-407C, Month & Year Of Completion: -----------#. The Material Of The Lael Shall E Preferaly In Stainless Steel Sheet And Engraved, Fixing Method Shall E Riveted/ Screwed Or As Agreed Y The Dewa In-Charge-Engineer. Final Testing And Commissioning Of The Packaged Unit Retrofitted With R-407C To E Done 3.#After One Month From The Final Testing And Commissioning, The Retrofitted Packaged Unit Shall E Inspected Again And Perfor Mance Shall E Assessed Refer To Annexure-3. If The Unit Is Working Properly Up To The Full Satisfaction Of Dewa, The Warranty Shal L Start From This Day. Contractor Shall Provide One Year Warranty For The Retrofitted Unit. If Any Anormality Oserved After The Item No. 14 Or During This Inspection, Necessary Corrective Works Shall E Carried Out Y The Contractor Up To The Satisfaction Of Dewa, If The Unit Is Unale To Start And Operate Or Any Anormal Conditions Persisting Such As Locked Drier Filter, Clogged Expansion Valve, Poor Compressor Oil Quality, Compressor Oil Leakage, High Supply Air Temperature, Leakage Of Refrigerant, Lp Tripping, Hp Tripping, Compressor Overheating/Anormal Noise/Anormal Viration, Higher Compressor Current Than That Rated Etc., Contractor Is Liale To Rect Ify. 4.#The Following Signed And Stamped Documents Shall E Sumitted Y The Contractor Upon Completion Of The Works Along With Po Copy : A#Delivery Note For All The Newly Supplied Materials #Jo Completion Report C#Test Report Of Packaged Unit Prior To Start The Retrofit D#Testing And Commissioning Report After Retrofitting E#Final Inspection Report As Mentioned In Clause16 Aove F#W Arranty Certificate For Minimum One Year Period For The Retrofitted Unit. Condenser Coil And Coating Warranty Of Minimum 7Years. G #Data Sheets/Msds For New Compressor Oil And R-407C Used And The Quantity Used In Each Refrigerant Circuit. H#Technical Data Sheet For All Newly Supplied Items Including Condenser Coil-Fin Assemly, Lower Earing And Pulley. Notes:- 1.#Interested Parties To Visit The Site On 04/09/2018 To Assess Entire Scope Of Works To E Carried Out Prior To Quote And Then Quote For Lump Sum Accordingly. No C Hange In Quoted Price Acceptale Thereafter. Contact Details For Arranging The Site Visit Are: Mr. Suresh, Asst. Engineer Tel. 04-3 221471/ Mo: 050-4611816 Or #Mr. Thomas, Engineer Tel. 04-3221470/ Mo. No: 055-9147894Or 5.#Inspect The Components In The Refrigerant Circuits Such As Compressors, Expansion Valves, Drier Filters, Sight Glasses, Lp And Hp Switches Etc. In Oth Refrigeran T Circuits Of The Existing Packaged Units. Check Whether These Components Are Compatile Or Not To Operate With New Ozone Friendly Re Frigerant R-407C Ased On Name Plate Data, Unit And Component Manufacturer Catalogues/O & M Manuals /Recommendations. 6.#List Of Components To E Replaced As Part Of Retrofit For Each Refrigerant Circuit Of Packaged Units Shall E Notified Y The Contractor To The Concerned Maintenance In-Charge-Electromechanical Engineer/ Supervisor Of Dewa-Tcm Department And Get His Approval Prior To Proc Eed With Retrofit. It Is Contractor#S Sole Responsiility To Ensure That The Packagedunit Will Operate Smoothly After The Retrofitti Ng Works. 7.#Replace Old Condenser Coil - Fin Assemly With New Condenser Coil-Fin Assemly And The New Coils Shall E Compatile To Ope Rate With New Refrigerant R407c. No Of Rows, Fins Per Inch, Coil Lock Thickness, Coil Thickness Etc. Shall E Suitale To Achieve The Same Cooling Capacity Of The Existing Unit. Condenser Coil Fins Shall E Coated With Special Anti-Corrosive Protection. Warranty Of Minimum 7 Years Shall E Provided For The Coil And Coating. 8.#Contractor Shall E Responsile For Disconnecting The Old Condenser Coil S From The Aove Mentioned Package Unit, Shifting From Roof Of Sustations To Ground, Transportation And Disposal At Dewa Central Scra P Yard. 9.#Refrigerant R-22 Shall Ecompletely Flushed Out From The Refrigerant Circuit As Part Of Retrofitting. R-22 And Old Compre Ssor Oil Deposits/Traces Shall E Completely Removed From The Circuits Including Evaporator And Condenser Coils. 10.#Recover/Reclaim Refrigerant R-22 From Package Units Using Recovery Machine And The Gas Shall Not E Discharged To Atmosphere. Evidence Supporting Do Cument Of Refrigerant R22 Recovery And Recycling Or Disposal As Per Dm Practice Green Certificate Shall E Provided Y The Contract Or. 11.#If Existing Compressors Are Found Compatile To Operate With R-407C, The Suction And Discharge Ends Shall E Disconnected From The Copper Piping. Then Flush Out Old Compressor Oil Mineral Oil Completely. New Compressor Oil Poe Of Required Quantity Compatile To Operate With R407c Shall E Charged To The Compressor. It Is Preferrale To Use The Compressor Oil As Recommended Y The Compres Sor Manufacturer For R-407C. Permanent Adhesive Lael Showing #Refrofitted# With New Oil Details #Oil Name: ------/Grade: ------/Mak E: ------/Type: ------ And Quantity: ---- # Shall E Affixed On Compressor Ody. 12.#If The Existing Compressor In Each Refrigerant C Ircuit Inside The Packaged Unit Is Not Compatile To Use With New Refrigerant R-407C, It Shall E Dismantled And Replaced With R-407C Compatile New Compressor Pre-Charged With Required Amount Of Poe Compressor Oil. 13.#All Required Razing Operations, Evacuation, Lea Kage/Pressure Testing And Refrigerant R-407C Charging Shall E Done Properly Y The Contractor Under Careful Supervision. 14.#The Thermostatic Expansion Valve Ul Shall E Checked For Its Proper Fixing And Tightness At Compressor Suction Line. Degree Of Superheat Shal L E Adjusted For R-407C Ased On Expansion Valve Opening. 15.#Lp And Hp Switch Settings Shall E Checked For R-407C Operation. Adjustm Ents Or Replacements, If Any Required, Shall E Done To Ensure Smooth And Safe Operation Of The Compressors. 16.#All Components Not C Ompatile To Operate With New Refrigerant R407c Shall E Removed From The Units And Not To E Used In The Units Eing Retrofitted, Retrofitting And Condenser Coil Replacement In Pu-2 @ Ora Ss Equipment # 30346955 Ora Sustation Package Unit # 2 Manufacturer # Carr Ier Model Numer # 50Tj-028-933M Serial Numer # 3508 S 04374 Capacity # 25 Tr Serving Area # Control Room 1.#Performance Testing Of The Retrofitted Refrigerant Circuits Shall, E Done And Check All Parameters Such As Compressor Starting And Running Currents, Refrige Rant Suction And Discharge Pressures, Supply Air Temperature, Lp Set Point, Hp Set Point Etc. Compare These Values With The Values O Tained With R-22 Prior To Retrofit. If Any Anormality Is Oserved, It Shall E Rectified. 2.#The Packaged Unit Casing Shall E Affixed With A Lael In Standard A4 Size In A Visile Location Indicating #Retrofitted Unit, New Refrigerant: R-407C, Month & Year Of Comple Tion: -----------#. The Material Of The Lael Shall E Preferaly In Stainless Steel Sheet And Engraved, Fixing Method Shall E Riveted /Screwed Or As Agreed Y The Dewa In-Charge-Engineer. Final Testing And Commissioning Of The Packaged Unit Retrofitted With R-407C To E Done 3.#After One Month From The Final Testing And Commissioning, The Retrofitted Packaged Unit Shall E Inspected Again And Perfo Rmance Shall E Assessed Refer To Annexure-3. If The Unit Is Working Properly Up To The Full Satisfaction Of Dewa, The Warranty Sha Ll Start From This Day. Contractor Shall Provide One Year Warranty For The Retrofitted Unit. If Any Anormality Oserved After The Ite M No. 14 Or During This Inspection, Necessary Corrective Works Shall E Carried Out Y The Contractor Up To The Satisfaction Of Dewa . If The Unit Is Unale To Start And Operate Or Any Anormal Conditions Persisting Such As Locked Drier Filter, Clogged Expansion Valv E, Poor Compressor Oil Quality, Compressor Oil Leakage, High Supply Air Temperature, Leakage Of Refrigerant, Lp Tripping, Hp Trippin G, Compressor Overheating/Anormal Noise/Anormal Viration, Higher Compressor Current Than That Rated Etc., Contractor Is Liale To Rec Tify. 4.#The Following Signed And Stamped Documents Shall E Sumitted Y The Contractor Upon Completion Of The Works Along With Po Cop Y: A#Delivery Note For All The Newly Supplied Materials #Jo Completion Report C#Test Report Of Packaged Unit Prior To Start Th E Retrofit D#Testing And Commissioning Report After Retrofitting E#Final Inspection Report As Mentioned In Clause 16 Aove F# Warranty Certificate For Minimum One Year Period For The Retrofitted Unit. Condenser Coil And Coating Warranty Of Minimum 7Years. G #Data Sheets/Msds For New Compressor Oil And R-407C Used And The Quantity Used In Each Refrigerant Circuit. H#Technical Data Sheet For All Newly Supplied Items Including Condenser Coil-Fin Assemly, Lower Earing And Pulley. Notes:- 1.#Interested Parties To Visit The Site On 04/09/2018 To Assess Entire Scope Of Works To E Carried Out Prior To Quote And Then Quote For Lump Sum Accordingly. No Change In Quoted Price Acceptale Thereafter. Contact Details For Arranging The Site Visit Are: Mr. Suresh, Asst. Engineer Tel. 04- 3221471/ Mo: 050-4611816 Or #Mr. Thomas, Engineer Tel. 04-3221470/ Mo. No: 055-9147894 Or 5.#Inspect The Components In Th E Refrigerant Circuits Such As Compressors, Expansion Valves, Drier Filters, Sight Glasses, Lp And Hp Switches Etc. In Oth Refrigera Nt Circuits Of The Existing Packaged Units. Check Whether These Components Are Compatile Or Not To Operate With New Ozone Friendly Refrigerant R-407C Ased On Name Plate Data, Unit And Component Manufacturer Catalogues/O & M Manuals /Recommendations. 6.#List Of Components To E Replaced As Part Of Retrofit For Each Refrigerant Circuit Of Packaged Units Shall E Notified Y The Contractor To The Concerned Maintenance In-Charge-Electromechanical Engineer/ Supervisor Of Dewa-Tcm Department And Get His Approval Prior To Pro Ceed With Retrofit. It Is Contractor#S Sole Responsiility To Ensure That The Packaged Unit Will Operate Smoothly After The Retrofitt Ing Works. 7.#Replace Old Condenser Coil - Fin Assemly With New Condenser Coil-Fin Assemly And The New Coils Shall E Compatile To Op Erate With New Refrigerant R407c. No Of Rows, Fins Per Inch, Coil Lock Thickness, Coil Thickness Etc. Shall E Suitale To Achieve The Same Cooling Capacity Of The Existing Unit. Condenser Coil Fins Shall E Coated With Special Anti-Corrosive Protection. Warranty Of Minimum 7 Years Shall E Provided For The Coil And Coating. 8.#Contractor Shall E Responsile For Disconnecting The Old Condenser Coi Ls From The Aove Mentioned Package Unit, Shifting From Roof Of Sustations To Ground, Transportation And Disposal At Dewa Central Scr Ap Yard. 9.#Refrigerant R-22 Shall E Completely Flushed Out From The Refrigerant Circuit As Part Of Retrofitting. R-22 And Old Compr Essor Oil Deposits/Traces Shall E Completely Removed From The Circuits Including Evaporator And Condenser Coils. 10.#Recover/Reclaim Refrigerant R-22 From Package Units Using Recovery Machine And The Gas Shall Not Edischarged To Atmosphere. Evidence Supporting D Ocument Of Refrigerant R22 Recovery And Recycling Or Disposal As Per Dm Practice Green Certificate Shall E Provided Y The Contrac Tor. 11.#If Existing Compressors Are Found Compatile To Operate With R-407C, The Suction And Discharge Ends Shall E Disconnected Fro M The Copper Piping. Then Flush Out Old Compressor Oil Mineral Oil Completely. New Compressor Oil Poe Of Required Quantity Compa Tile To Operate With R407c Shall E Charged To The Compressor. It Is Preferrale To Use The Compressor Oil As Recommended Y The Compre Ssor Manufacturer For R-407C. Permanent Adhesive Lael Showing #Refrofitted# With New Oil Details #Oil Name: ------/Grade: ------/Ma Ke: ------/Type: ------ And Quantity: ---- # Shall E Affixed On Compressor Ody. 12.#If The Existing Compressor In Each Refrigerant Circuit Inside The Packaged Unit Is Not Compatile To Use With New Refrigerant R-407C, It Shall E Dismantled And Replaced With R-407C Compatile New Compressor Pre-Charged With Required Amount Of Poe Compressor Oil. 13.#All Required Razing Operations, Evacuation, Le Akage/Pressure Testing And Refrigerant R-407C Charging Shall E Done Properly Y The Contractor Under Careful Supervision. 14.#The The Rmostatic Expansion Valve Ul Shall E Checked For Its Proper Fixing And Tightness At Compressor Suction Line. Degree Of Superheat Sha Ll E Adjusted For R-407C Ased On Expansion Valve Opening. 15.#Lp And Hp Switch Settings Shall E Checked For R-407C Operation. Adjust Ments Or Replacements, If Any Required, Shall E Done To Ensure Smooth And Safe Operation Of The Compressors. 16.#All Components Not Compatile To Operate With New Refrigerant R407c Shall E Removed From The Units And Not To E Used In The Units Eing Retrofitted, Condenser Coil Replacement In Chiller-2 @ Hlal Ss Equipment # 30346351 Hlal Sustation Chiller Unit # 2 Air Cooled Chiller Manufact Urer # Carrier Model Numer # 30Gtn060-F933 Serial Numer # 3304F52115 Capacity # 60 Tr Serving Area # Control Uilding Notes:- 1.#Inte Rested Parties To Visit The Site On 04/09/2018 To Assess Entire Scope Of Works To E Carried Out Prior To Quote And Then Quote For Lu Mp Sum Accordingly. No Change In Quoted Price Acceptale Thereafter. Contact Details For Arranging The Site Visit Are: Mr. Riyas, En Gineer Tel. 04-3221471/ Mo: 050-6863712 Or #Mr. Thomas, Engineer Tel. 04-3221470/ Mo.No: 055-9147894 Or 1.#Replace Old Condenser Coil - Fin Assemly With New Condenser Coil-Fin Assemly And The New Coil Shall E Compatile To Operate Properly. No Of Rows, Fins Per Inch, Coil Lock Thickness, Coil Thickness Etc. Shall E Suitale To Achieve The Same Cooling Capacity Of The Existing Unit. Condenser Coil Fins Shall E Coated With Special Anti-Corrosive Protection. Warranty Of Minimum 7 Years Shall E Provided For The Coi L And Coating. 2.#Condenser Coil Shall E Copper To Copper Heresite Coating To E Ensured As It Is In Seaside 3.#Contractor Shall E Responsile For Disconnecting The Old Condenser Coil From The Aove Mentioned Chiller Unit, Shifting From Roof Of Sustations To Ground, Transportation And Disposal At Dewa Central Scrap Yard.

GTN :14091393
Dubai - Dubai

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