COMPREHENSIVE MAINT AND REPAIR TO CENTRAL AC PLANT AND OTHER ALLIED WORKS AT AFS BIDAR

M&L for preventive maintenance of AC plant of capacity 3 x 33TR strictly through OEM/Expert workshop The scope of work is as under complete all as specified and as directed.:- SECTION I (i) All equipment under contract will be serviced during contract period as per standard checklists (ii) All breakdown calls will be attended to during the contract period. SECTION II (i) The compressor will be checked for proper functioning and if any defect is found, the same will be repaired. cost of compressor will be measured seperately (ii) Safety controls such as pressure cut outs will be tested for proper functioning and in case of any malfunctioning they will be either repaired or replaced accordingly. (iii) Air filters will be inspected and cleaned or replaced, if necessary. Cost of filters will be borne by the customer. (iv) Cooling coil will be inspected and cleaned, if necessary. (v) The blower motor will be checked and any defects noticed will be attended to. Cost of repair will be measured seperately (vi) The driver set of the blower section will be inspected, belt tension adjusted and belts changed, if necessary. Cost of belt will be measured seperately (vii) Any defect in the electrical items and control wiring will be attended to. Cost of spares will be measured seperately.

(viii) Refrigerant gas will be topped up in the system as & when necessary. Cost of gas will be measured seperately (ix) Activities applicable to Air cooled units:- (a) The Condenser fan motor will be attended to. Cost of repair will be measured seperately. (b) The condenser coil will be inspected and cleaned. (c) Any repairs in the condensor coil will be attended to. (d) Repairs to refrigerant piping due to system problems will be attended to. Cost of spares will be measured seperately (e) Descaling of hot water and cold water pipelines (f) Controller & Actuater resetting, reprogramming & recommissioning. Control panel & hot water generater panel temperature settings updation as per load to increase COP of plant.

M&L for preventive maintenance of AC plant of capacity 3 x 48TR strictly through OEM/Expert workshop The scope of work is as under complete all as specified and as directed:- SECTION I (i) All equipment under contract will be serviced during contract period as per standard checklists (ii) All breakdown calls will be attended to during the contract period. SECTION II (i) The compressor will be checked for proper functioning and if any defect is found, the same will be repaired. cost of compressor will be measured seperately (ii) Safety controls such as pressure cut outs will be tested for proper functioning and in case of any malfunctioning they will be either repaired or replaced accordingly. (iii) Air filters will be inspected and cleaned or replaced, if necessary. Cost of filters will be borne by the customer. (iv) Cooling coil will be inspected and cleaned, if necessary. (v) The blower motor will be checked and any defects noticed will be attended to. Cost of repair will be measured seperately (vi) The driver set of the blower section will be inspected, belt tension adjusted and belts changed, if necessary. Cost of belt will be measured seperately (vii) Any defect in the electrical items and control wiring will be attended to. Cost of spares will be measured seperately.

(viii) Refrigerant gas will be topped up in the system as & when necessary. Cost of gas will be measured seperately (ix) Activities applicable to Air cooled units: (a) The Condenser fan motor will be attended to. Cost of repair will be measured seperately. (b) The condenser coil will be inspected and cleaned. (c) Any repairs in the condensor coil will be attended to. (d) Repairs to refrigerant piping due to system problems will be attended to. Cost of spares will be measured seperately (e) Descaling of hot water and cold water pipelines (f) Controller & Actuater resetting, reprogramming & recommissioning. Control panel & hot water generater panel temperature settings updation as per load to increase COP of plant.

Repair maint of AC plant heat exchanger/Chiller of capacitiy 33 TR incl remove fauling ,corrosion, efficiency loss alongwith check for corrosion, erosion, leaks, and vibration damage. Use tools like eddy current probes to measure tube wall thickness and detect thinning or cracks Inspect and replace gaskets, seals, and bolts for wear or damage, Cleaning Heat Transfer Surfaces: Fouling is the most common cause of reduced efficiency.Removal of Fouling include scaling (mineral deposits), biological growth, particulate buildup, chemical fouling, corrosion fouling, and freezing,(Cleaning methods should match the fouling type and material of the exchanger),Chemical cleaning for scale or biofilm removal.Mechanical cleaning such as brushing or hydro-jetting for debris and particulate fouling.Preventive measures like filtration, antifouling coatings, or chemical inhibitors to safeguard heat exchanger.including necessary welding / brazing, pressure testing with dry nitrogen, vacuumising and charging with refrigerant R-22/R407 after ensuring leak proof condition and testing complete all as specified and as directed. Make : - Bluestar

Repair maint of AC plant heat exchanger/Chiller of capacitiy 48 TR incl remove fauling ,corrosion, efficiency loss alongwith check for corrosion, erosion, leaks, and vibration damage. Use tools like eddy current probes to measure tube wall thickness and detect thinning or cracks Inspect and replace gaskets, seals, and bolts for wear or damage, Cleaning Heat Transfer Surfaces: Fouling is the most common cause of reduced efficiency.Removal of Fouling include scaling (mineral deposits), biological growth, particulate buildup, chemical fouling, corrosion fouling, and freezing,(Cleaning methods should match the fouling type and material of the exchanger),Chemical cleaning for scale or biofilm removal.Mechanical cleaning such as brushing or hydro-jetting for debris and particulate fouling.Preventive measures like filtration, antifouling coatings, or chemical inhibitors to safeguard heat exchanger.including necessary welding / brazing, pressure testing with dry nitrogen, vacuumising and charging with refrigerant R-22/R407 after ensuring leak proof condition and testing complete all as specified and as directed. Make : - Bluestar

valve of capacity up to 33 TR

valve of capacity up 48 TR

M&L for descaling of copper tubes of condensor suitable for 33 TR and 48 TR compressor by circulating discaling solution ( diluted HCL) with pump and rodding into the tubes for removing all deposited materials complete all as specified and as directed.