REPAIR / MAINT OF CENTRAL AC PLANT, CLEANING OF AIR FLOW SYSTEM, REPLACEMENT OF AHU FILTERS, REPAIR / MAINT OF COOLING TOWER, REPAIR / MAINT TO PUMPS / MOTORS, CT FAN MOTOR, REPAIR / MAINT OF DUCTS, REPAIR / MAINTENANCE OF PANELS, CONTROL DEVICES, CO

Amount

Note 1:- (Applicable for all parts/items) : The bidders/contractors are advised to read tender documents & all corrigendum/amendments and general condition of contracts before entry/quoting the rates. Note 2:- Attention to bidder is hereby invited to upload revised BOQ if published during their bid submission. Uploading of incorrect/ pre-revised BOQ shall be treated as non bonafide and rejected. Fixed credit has been given in technical documents which shall be taken into account during acceptance of bid/tender.

S&F in replacement of Pressure control HP/LP cut out suitable for water cooled chiller type AC upto 11 TR complete all as specified and directed.

S&F in replacement of cast Iron butterfly valve, ISI marked, PN-1.6 pressure grade, having Nitrile/EPDM rubber lining, SS stem,CS/SS disc. Lever operated type, of size 150 mm dia bore including all jointing material i.e, nut, bolt, washer, packing , flanges material etc, duly insulated and taking out of old unserviceable valve, complete all as specified and directed.

M&L for for servicing of sluice valve inlcluding taking down and refixing valves and replacement of gasket, unsv nuts bolt, greasing in spindle, rotating wheel / handle, change of packing gland, valve size of 150 mm complete all as specified and directed.

All as per serial item No. 03.00 above but for size of 100mm complete all as specified and directed.

All as per serial item No. 03.00 above but for size of 80 mm complete all as specified and directed.

S&F in replacement PLC (microprocessor controller unit) suitable for (chiller make Bluestar & compressor make Danfos) water cooled chiller type AC of cap upto 36 TR having following features or any other control required to make system functional and safe as per existing model complete with all accessories as specified and directed. (i) Run time equalisation. (ii) Auto start after power failure. (iii) Memory back up (iv) Built in time delay (v) Single phasing and auto phase squence corrector (vi) Self fault diagnostics (vii) Easy look up with fire alarm System Note:- (i) PLC test certificate produced by contractor. (ii) PLC should be replaced through authorised OEM only.

S&F in replacement PLC (microprocessor controller unit) suitable for (chiller make Bluestar & compressor make Danfos) water cooled chiller type AC of cap upto 65 TR having following features or any other control required to make system functional and safe as per existing model complete with all accessories as specified and directed. (i) Run time equalisation. (ii) Auto start after power failure. (iii) Memory back up (iv) Built in time delay (v) Single phasing and auto phase squence corrector (vi) Self fault diagnostics (vii) Easy look up with fire alarm System Note:- (i) PLC test certificate produced by contractor. (ii) PLC should be replaced through authorised OEM only.

S&F in replacement PLC (microprocessor controller unit) suitable for (chiller make Bluestar & compressor make Danfos) water cooled chiller type AC of cap upto 70 TR having following features or any other control required to make system functional and safe as per existing model complete with all accessories all as specified. (i) Run time equalisation. (ii) Auto start after power failure. (iii) Memory back up (iv) Built in time delay (v) Single phasing and auto phase squence corrector (vi) Self fault diagnostics (vii) Easy look up with fire alarm System Note:- (i) PLC test certificate produced by contractor. (ii) PLC should be replaced through authorised OEM only.

S&F in replacement PLC (microprocessor controller unit) suitable for (chiller make Bluestar & compressor make Danfos) ,non inverter type water cooled chiller type AC of cap upto 80 TR having following features or any other control required to make system functional and safe as per existing model complete with all accessories as specified and directed. (i) Run time equalisation. (ii) Auto start after power failure. (iii) Memory back up (iv) Built in time delay (v) Single phasing and auto phase squence corrector (vi) Self fault diagnostics (vii) Easy look up with fire alarm System Note:- (i) PLC test certificate produced by contractor. (ii) PLC should be replaced through authorised OEM only.

S&F in replacement of single phase preventer VSP 3 complete all as specified and directed.

S&F in replacement of ON / OFF Push switches complete all as specified and directed.

S&F in replacement of RYB LED type indicator lamp complete all as specified and directed.

S&F in replacement of thermostatic expansion valve suitable for Refrigerent R-407C operated package AC unit complete all as specified and directed.

S&F in replacement of thermostatic expansion valve suitable for Refrigerent R-410 operated package AC unit complete all as specified and directed.

S&F in replacement of pressure guage type 1-32 size 100 mm dia thread 3/8" surface mounting of range upto 150 PSI complete all as specified and directed.

S&F in replacement of Thermometer of range upto 100 degree and of thread 3/8" surface mounting R-407C/410 complete all as specified and directed.

S&F in repair MCCB 63 A, 4 Pole 16 KA with thermal magnetic release, Ics-100%Icu, four pole , Thermal Adjustable - 0.8 to 1 In,with extended ROM (sliding know for remote opertaion) complete all as specified and directed.

All as per serial item No. 17.00 above but for MCCB 100 A, 4 Pole, 16 KA

All as per serial item No. 17.00 above but for MCCB 125 A, 4 Pole, 16 KA

All as per serial item No. 17.00 above but for MCCB 160 A, 4 Pole, 36 KA

All as per serial item No. 17.00 above but for MCCB 160 A, 3 Pole, 36 KA

All as per serial item No. 17.00 above but for MCCB 200 A, 3 Pole, 36 KA

All as per serial item No. 17.00 above but for MCCB 250 A, 4 Pole, 36 KA

All as per serial item No. 17.00 above but for MCCB 400 A, 3 Pole, 36 KA

All as per serial item No. 17.00 above but for MCCB 630 A, 4 Pole, 50 KA

S&F in repair power contactor of AC3 rating, 03 pole, with 2NO+2NC , 415V , type MNX 09, 65 A including making all electric connection, complete all as directed.

All as per serial item No. 26.00 above but for , 32 A

All as per serial item No. 26.00 above but for over load relay range 8.5 to 12.5 Amps.

All as per serial item No. 26.00 above but for over load relay type MN2, range 20-33 Amps.

S&F in repair power contactor of AC3 63 Amp rating, 03 pole, with 2NO+2NC , 415V , type as existing on site, making all electric connection, complete all as specified and directed.

S&F in repair power contactor of AC3 rating, 03 pole, with 2NO+2NC , 415V , type MNX 09, 25 A including making all electric connection, complete all as specified and directed.

All as per serial item No. 31.00 above but for power contactor of type MNX/ML/MO 18, 30 A

All as per serial item No. 31.00 above but for power contactor of type MNX 25, 45 A

All as per serial item No. 31.00 above but for power contactor of type MNX 32, 55 A

Periodical and maintenance of under mentioned air cooled central AC plants comprising the various equipments as mentioned below as directed for central AC plant of capacity 80x3 TR installed at Long Term AC plant for maintaining in AC spaces comprising of mentioned plants equipments and accessories complete all as specified and as directed by Engr-in-charge. Notes:- (i) Inspection services:- (a) Inspecting the plant /system and carry out preventive maintenance as per the standard practice. (b) Checking the refrigeration system, motor and starters and ensuring healthy condition of the plant. (c) Checking the system for any leaks and rectificationm of leaks if found. (d) Tracking set of reading and reporting the healthiness of the plant and suggesting improvements if any. (e) Checking the refrigeration control system for operation and adjusting the settings. (f) Checking the functioning of compressor and its accssories. (g) Cleaning the evaporator once a year if found necessary. (h) Lubricating the bearings of motors, and fans when found necessary. (j) Monthly inspection of belts adjusting the tension. (k) Checking of the microprocessor controller for its proper functioning. (l) Attending to break calls. (m) Labour involving evecuation of refrigerant during replacement of controls and replacement of compressor. (n) Carrying out routine basis, testing of lubricant samples. (ii) Test certificate should be produced by contractor with user representative signature.

All as above item No 36.00 but for plant capacity 65 TR x 3 (Parachute Bay and ejection seat)

All as above item No 36.00 but for plant capacity 31 TR x 3 (PBL hanger)

All as above item No 36.00 but for plant capacity 36 TR x 3 (AC fuel tank)

Periodical and maintenance of under mentioned air cooled central AC plants comprising the various equipments as mentioned below as directed for central AC plant of capacity 80x4 TR installed at service block for maintaining in AC spaces comprising of mentioned plants equipments and accessories complete all as specified and as directed by Engr-in-charge. Notes:- (i) Inspection services:- (a) Inspecting the plant /system and carry out preventive maintenance as per the standard practice. (b) Checking the refrigeration system, motor and starters and ensuring healthy condition of the plant. (c) Checking the system for any leaks and rectificationm of leaks if found. (d) Tracking set of reading and reporting the healthiness of the plant and suggesting improvements if any. (e) Checking the refrigeration control system for operation and adjusting the settings. (f) Checking the functioning of compressor and its accssories. (g) Cleaning the evaporator once a year if found necessary. (h) Lubricating the bearings of motors, and fans when found necessary. (j) Monthly inspection of belts adjusting the tension. (k) Checking of the microprocessor controller for its proper functioning. (l) Attending to break calls. (m) Labour involving evecuation of refrigerant during replacement of controls and replacement of compressor. (n) Carrying out routine basis, testing of lubricant samples. (ii) Test certificate should be produced by contractor with user representative signature.

M&L for cleaning ,removing oil, dust & rust by using sand paper emery paper or any method on all types of steel/ iron surfaces of compressor, AHU's, base plates, motors, AHU's cable duct, MS channel , etc of any shape , size and description, with and including preparation filling cavities if any and applying one coat spray painting with synthetic enamelled paint of approved quality with and including writing E/M & MES no. making arrows/feeders name neatly on each machine complete with connected accessaries and components of 80TR x 03 Capacity of air cooled AC Plant complete all as specified and directed.

M&L for cleaning ,removing oil, dust & rust by using sand paper emery paper or any method on all types of steel/ iron surfaces of compressor, AHU's (14 Nos), base plates, motors, AHU's cable duct, MS channel , etc of any shape , size and description, with and including preparation filling cavities if any and applying one coat spray painting with synthetic enamelled paint of approved quality with and including writing E/M & MES no. making arrows/feeders name neatly on each machine complete with connected accessaries and components of 80TR x 04 Capacity of air cooled AC Plant complete all as specified and directed.

M&L for cleaning ,removing oil, dust & rust by using sand paper emery paper or any method on all types of steel/ iron surfaces of compressor, AHU's, base plates, motors, AHU's cable duct, MS channel , etc of any shape , size and description, with and including preparation filling cavities if any and applying one coat spray painting with synthetic enamelled paint of approved quality with and including writing E/M & MES no. making arrows/feeders name neatly on each machine complete with connected accessaries and components of 65TR x 03 upto Capacity of water cooled AC Plant complete all as specified and directed.

S&F, testing, commissioning in replacement scroll compressor fixed type, capacity 20 TR, oil charge capacity maximum 8 ltr, maximum operting current 58A, rotational speed at 50hz 2900 RPM, Refrigerant charge (R-407C) capacity 20 kg, suitable for air cooled, one chiller capacity (20x4) TR complete all as specified and directed. Make:- Danfoss (Model - SZ300A4PBF) Note:- (i) Compressor should be replaced through authorised OEM only. (ii) Testing certificate shall be produced by the contractor. (iii) Compressor Sl No./Date of installation shoud be marked on compressor. (iv) Prior approval shall be obtained from accepting officer before execution of work.

S&F, testing, commissioning in replacement scroll compressor inverter type, capacity 20 /22 TR, oil charge capacity maximum 6.1 ltr, maximum operting current 56A, rotational speed at 50hz 2900 RPM, Refrigerant charge (R-410A) capacity 15 kg, suitable for water cooled , one chiller capacity 65 TR complete all as specified and directed. Make:- Danfoss (Model - DSH295A4ABC) Note:- (i) Compressor should be replaced through authorised OEM only. (ii) Testing certificate shall be produced by the contractor. (iii) Compressor Sl No./Date of installation shoud be marked on compressor. (iv) Prior approval shall be obtained from accepting officer before execution of work.

M&L for rewinding of, 3 phase, 50 Hz, 415 volt of AHU blower motor, Chiller motor and hot water generator motor pump comprising of the following activities for induction motor of following capacities complete all as specified and directed. (i) Disconnecting and removing the electric motor from installed position and loading, unloading, transporting to authorised /approved work shop. (ii) Dismantling existing burnt winding from the motor and rewinding complete with super enamelled copper winding wire of existing guage including all material such as insulated paper sleeves tape varnish etc., complete for class 'F' insulation and including shaft metalising, bearing cover slieving, necessary replacement of cooling fan, nuts and bolts etc., (iii) Loading, unloading and transporting motor and reinstalling in position and in alignment including electric connection commissioning and testing in actual working condition for 8 hours continuosly to check the performance on full load and designed RPM to the complete satisfaction of Engr-in-charge complete all as specified and directed.

Ditto as item No 46.00 but for Induction Motor of Capacity 5.5 HP

Ditto as item No 46.00 but for Induction Motor of Capacity 7.5 HP

Ditto as item No 46.00 but for blower motor for AHU capacity 15 HP

Ditto as item No 46.00 but for UG sump motor capacity 02 HP

M&L for rewinding of, 3 phase, 50 Hz, 415 volt of AHU blower, primary and secondary motor pump , condenser fan motor comprising of the following activities for induction motor of following capacities complete all as specified and directed. (i) Disconnecting and removing the electric motor from installed position and loading, unloading, transporting to authorised /approved work shop. (ii) Dismantling existing burnt winding from the motor and rewinding complete with super enamelled copper winding wire of existing guage including all material such as insulated paper sleeves tape varnish etc., complete for class 'F' insulation and including shaft metalising, bearing cover slieving, necessary replacement of cooling fan, nuts and bolts etc., (iii) Loading, unloading and transporting motor and reinstalling in position and in alignment including electric connection commissioning and testing in actual working condition for 8 hours continuosly to check the performance on full load and designed RPM to the complete satisfaction of Engr-in-charge all as specified and directed.

Ditto as item No 47.00 but for Induction Motor of Capacity upto 5.5 HP

Ditto as item No 47.00 but for Induction Motor of Capacity 7.5 HP

Ditto as item No 47.00 but for blower motor for AHU capacity 15 HP

Ditto as item No 47.00 but for upto capacity 03 HP

M&L for rewinding of, 3 phase, 50 Hz, 415 volt of CTs fan motor, Chiller motor pump and hot water generator motor pump, dehumidifier motor comprising of the following activities for induction motor of following capacities complete all as specified and directed. (i) Disconnecting and removing the electric motor from installed position and loading, unloading, transporting to authorised /approved work shop. (ii) Dismantling existing burnt winding from the motor and rewinding complete with super enamelled copper winding wire of existing guage including all material such as insulated paper sleeves tape varnish etc., complete for class 'F' insulation and including shaft metalising, bearing cover slieving, necessary replacement of cooling fan, nuts and bolts etc., (iii) Loading, unloading and transporting motor and reinstalling in position and in alignment including electric connection commissioning and testing in actual working condition for 8 hours continuosly to check the performance on full load and designed RPM to the complete satisfaction of Engr-in-charge all as specified and directed.

Ditto as item No 48.00 but for Induction Motor of Capacity 5/5.5 HP

Ditto as item No 48.00 but for Induction Motor of Capacity 7.5 HP

Ditto as item No 48.00 but for induction motor capacity 02/03 HP

M&L for rewinding of, 3 phase, 50 Hz, 415 volt of CTs fan motor, Chiller motor and condenser motor , Compressor's motor comprising of the following activities for induction motor of following capacities complete all as specified and directed. (i) Disconnecting and removing the electric motor from installed position and loading, unloading, transporting to authorised /approved work shop. (ii) Dismantling existing burnt winding from the motor and rewinding complete with super enamelled copper winding wire of existing guage including all material such as insulated paper sleeves tape varnish etc., complete for class 'F' insulation and including shaft metalising, bearing cover slieving, necessary replacement of cooling fan, nuts and bolts etc., (iii) Loading, unloading and transporting motor and reinstalling in position and in alignment including electric connection commissioning and testing in actual working condition for 8 hours continuosly to check the performance on full load and designed RPM to the complete satisfaction of Engr-in-charge all as specified and directed.

Ditto as item No 49.00 but for Induction Motor of Capacity 5/5.5 HP

Ditto as item No 49.00 but for Induction Motor of Capacity 7.5 HP

Ditto as item No 49.00 but for Induction Motor of Capacity 10 to 15 HP

Ditto as item No 49.00 but for compressor's motor capacity 50 HP to 60 HP

M&L for cleaning and bailing out sludge/mud, moss/algae, growing vegitation in side wall and other foreign mtrl with solution of hydrogen paroxide, amonia powder and scrubing the side walls and surface with wire brush including removing and refixing of manholes cover of Underground sump size 20ft x20ft x10ft complete all as specified and directed. Notes:- (i) Draining out water by using pump at least 50m away from AC plant location. (ii) Cleaning all the algae, mud and vegitation with above mentioned chemicals and brush. (iii) Fill the water at level and cover the manhole as before

S&F in replacement butterfly valve size 50 mm suitable as existing air cooled central type AC plant as per sample complete all as specified and directed.

S&F in replacement butterfly valve size 150 mm suitable as existing for air cooled central type AC plant as per sample complete all as specified and directed.

S&F in replacement angle valve size 1/2" suitable as existing air cooled central type AC plant as per sample complete all as specified and directed.

M&L for painting of following pump sets with two coats of synthetic enamel paint complete all as specified and directed.

Chiller Pump upto 7.5 HP

Hot water generator Pump upto 5 HP

S&F in replacement of refrigeration filter dryer fixed in Liquid line suitable for R-407C refrigerant and 80 TR air cooled chiller complete all as specified and directed.

S&F in replacement of refrigeration filter dryer fixed in Liquid line suitable for R-407C/410A/ 134a refrigerant ,water cooled chiller complete all as specified and directed.

S&F in replacement of refrigeration filter dryer filter (oil)suitable for R-134a refrigerant and 80 TR air cooled chiller complete all as specified and directed.

S&F in replacement Safety valve thread size 3/8 (300 Psi) for air cooled central type AC plant as per sample complete all as specified and directed.

S&F in replacement Safety valve thread size 3/8 ,water cooled central type AC plant as per sample complete all as specified and directed.

S&F in replacement solenoid coil/Valve assembly for (capacity 20 TR each, total 80 TR one chiller ) for air cooled central type AC plant as per sample complete all as specified and directed.

M&L for repair of hot water generator motor pump, chiler motor pump any type including replacement of impeller and bearings both sides, mech seals, polishing, grinding of the pump of following capacities complete all as specified and directed.

Chiller motor pump of Capacity 7.5 HP

Hot water generator Motor pump of Capacity 5 HP

UG sump motor pump 2 HP

M&L for repair of hot water generator capacity 175kw, make rapid cool (model- RC-175), checking of wiring, setting of PLC, change of heating strip one /two, general checkup and servicing of water containing tube by draining out the water complete and de-scaling in tube complete all as specified and directed. Note:- Heating strip/coil should be measured separately.

S&F for replacement of strip/coil heating element of capacity 25KW, complete all as specified and directed. Note:- Rate for Transportation and re-fixing in all respect of hot water gen from MES installation to auth wksp included in same item

S&F in replacement of PLC for hot water generator capacity 175kw, make rapid cool (model- RC-175), proper connection with new wiring set and should be designed as fully autoamated complete all as specified and directed.

S&F in replacement Pu-pipe as per existing size complete all as specified and directed.

S&F in replacement of Pressure switch (sensor) for suction suitable for voltas make 80 x 3TR Air cooled chiller plant compreising of 20 x 4 TR compressors complete all as specified and directed.

M&L for de-scaling and complete servicing of GI pipes and cleaning of 'Y' stainer by means of adding descaling chemical solution (HCL) into the pipe line , and running the plant pump continuously till all the scale of pipes/ shell are removed including cleaning the water tubes by means of nylon brushes till the scaling is removed and replacement of neoprene rubber gasket and refixing pipe connection etc complete all as specified and directed.

M&L for machine and filling up R407C/410A/134a refrigerant or suitable to existing compressor in respectives plants complete all as specified and directed. Note:- (i) Refridgerant cylinder shoud be obtained sealed condition. (ii) Testing certificate shall be produced by the contractor.

S&F in replacement of compressor oil suitable for Danfoss 20 TR as existing on site, sealed packed in cann/barrel incl drain out old oil and charge new oil with testing and commissioning complete all as specified and directed.

Supply and filling compressor oil suitable for R-22 gas wherever required to fill complete all as specified and directed.

Supply and filling compressor oil suitable for R-134a gas wherever required to fill complete all as specified and directed.

S&F in replacement of Liquid line valve of size 25mm or of suiteable size (700 Psi) as per sample and testing the system leak proof before and after fixing of new valve complete all as specified and directed.

M&L for dismantling of existing Air Handling Unit of 17500 CFM capacity , cleaning, servicing, overhauling all component of AHU, with and including cleaning of heating & cooling coil with caustic soda solution, including welding / brazing, wherever required to arrest leakages, cleaning of Pre-Micro Filters, replacing of vertical GI sheet supports, replacement of U/S foam insulation of best quality using adhesive substance to avoid cold air leakages, fabrication of bottom GI tray of existing size with drain pan made out of 16 guage thick GI Sheets duly painted over interior surface of tray, re-assembling all the dismantled components to its original position using new nut, bolt, washer and other packing material etc, with and including testing, commissioning of Air handling Unit at optimum efficiency, complete all as specified and directed.

M&L for dismantling of existing Air Handling Unit of 17500 to 34000 CFM capacity , cleaning, servicing, overhauling all component of AHU, with and including cleaning of heating & cooling coil with caustic soda solution, including welding / brazing, wherever required to arrest leakages, cleaning of Pre-Micro Filters, replacing of vertical GI sheet supports, replacement of U/S foam insulation of best quality using adhesive substance to avoid cold air leakages, fabrication of bottom GI tray of existing size with drain pan made out of 16 guage thick GI Sheets duly painted over interior surface of tray, re-assembling all the dismantled components to its original position using new nut, bolt, washer and other packing material etc, with and including testing, commissioning of Air handling Unit at optimum efficiency, complete all as specified and directed.

M&L for dismantling of existing Air Handling Units floor and ceiling mounted motor belt driven capacity maximum 10 HP capacity , cleaning, servicing, overhauling all component of AHU, with and including cleaning of heating & cooling coil with caustic soda solution, including welding / brazing, wherever required to arrest leakages, cleaning of Pre-Micro Filters, replacing of vertical GI sheet supports, replacement of U/S foam insulation of best quality using adhesive substance to avoid cold air leakages, fabrication of bottom GI tray of existing size with drain pan made out of 16 guage thick GI Sheets duly painted over interior surface of tray, re-assembling all the dismantled components to its original position using new nut, bolt, washer and other packing material etc, with and including testing, commissioning of Air handling Unit at optimum efficiency, complete all as specified and directed. Note:- (Total 14 Nos AHU @ 3 times =42 Nos) Note:- (i) Servicing shall be carried out every 3 months interval. (ii) Test certificates shall be poduced by the contractor.

M&L for dismantling of blower shaft of AHU of 17500 CFM capacity with 15 HP two induction motors , by removing the belt and pulley, blower drum, and remetaling the shaft and filling of metal at decayed portions including all welding, turning, polishing and other machine works required to make the shaft of required shape and size, as original, balancing the shaft and refitting in AHU including re-assembling the blower, pulley etc with and including replacement of new bearing of existing size, testing the AHU for satisfactory operation, complete all as specified and directed.

M&L for dismantling of blower shaft of AHU of 17500 to 34000 CFM capacity upto 15 HP , induction motors , by removing the belt and pulley, blower drum, and remetaling the shaft and filling of metal at decayed portions including all welding, turning, polishing and other machine works required to make the shaft of required shape and size, as original, balancing the shaft and refitting in AHU including re-assembling the blower, pulley etc with and including replacement of new bearing of existing size, testing the AHU for satisfactory operation, complete all as specified and directed.

M&L for dismantling of blower shaft for AHU capacity upto 10 HP induction motors , by removing the belt and pulley, blower drum, and remetaling the shaft and filling of metal at decayed portions including all welding, turning, polishing and other machine works required to make the shaft of required shape and size, as original, balancing the shaft and refitting in AHU including re-assembling the blower, pulley etc with and including replacement of new bearing of existing size, testing the AHU for satisfactory operation, complete all as specified and directed.

S&F in replacement V belt Size of Lp B-94 (ISI Marked) complete all as specified and directed.

S&F in repair thermostat expansion valve suitable for 80 TR capacity air cooled chiller comprising of 20x4 compressors, complete all as specified and directed.

S&F in repair thermostat expansion valve suitable for 70 TR capacity, complete all as specified and directed.

S&F in repair thermostat expansion valve suitable for 65 TR capacity, complete all as specified and directed.

S&F in repair thermostat expansion valve suitable for 36 TR capacity, complete all as specified and directed.

S&F in repair thermostat expansion valve suitable for 15 TR capacity, complete all as specified and directed.

S&F on side wall wet & dry bulb thermometer for A/C plant rooms contains red spirit filled in thermometers (non mercury), plastic molded case, complete all as specified and directed.

S&F in replacemenrt box type AHU Pre - filter of size 610x610x50mm complete all as specified and directed.

S&F in replacemenrt box type AHU Pre - filter of size 305x610x50mm complete all as specified and directed.

S&F in replacemenrt Pre - filter box type- 102/16 (Size 610 x 610 x 50 mm) (MERV-08) complete all as specified and directed.

Supply, installation, testing and commissioning of HDPE tank of size 1000 Ltr. complete with air vent and drain connection & overflow, make up connection with float valve & foundation etc. complete all as specified and directed.

M&L for de-scaling and complete servicing of condenser units (1 unit has 2 condenser) for central type water cooled AC plants for 31 TR to 80 TR x 3 capacities by means of adding descaling chemical solution (HCL) into the cooling tower sump as per requirements, and running the plant pump continuously till all the scale of pipes/ shell are removed including removing side covers of condenser and cleaning the water tubes by means of nylon brushes till the scaling is removed and re-fixing of covers including replacement of neoprene rubber gasket and refixing pipe connection etc., complete all as specified and directed.

M&L for de-scaling and complete servicing of condenser units (1 unit has 2 condenser) for central type water cooled AC plants for 15 TR to 65 TR x 3 capacities by means of adding descaling chemical solution (HCL) into the cooling tower sump as per requirements, and running the plant pump continuously till all the scale of pipes/ shell are removed including removing side covers of condenser and cleaning the water tubes by means of nylon brushes till the scaling is removed and re-fixing of covers including replacement of neoprene rubber gasket and refixing pipe connection etc., complete all as specified and directed.

M&L for surface excavation at surrounding area of plant set up (outside) not exceeding 30 cm deep and averaging 15 cm deep and getting out soft / loose soil removing shrubs, small trees height up to 1.0 Mtrs , removing the grass from route and spray chemical for prevention of growth of weed and grass at surrounding of AC Plant area with spray gun as per the manufacturer instruction complete. Note:- (i) Rate includes removing all waste material and grass not excceding 50 Mtrs distance from installation ,depositing where directed at a level not exceeding 1.5 Mtrs above the starting point and cleaning of yard. (ii) Cleaning should repeat in same installation in every three months.

M&L for surface excavation at E/M installations / Ac plant not exceeding 30 cm deep and averaging 15 cm deep and getting out soft / loose soil removing shrubs, small trees height up to 1.0 Mtrs , removing the grass from route and spray chemical for prevention of growth of weed and grass at surrounding of Plants with spray gun as per the manufacturer instruction complete all as specified and directed. Note:- (i) Rate includes removing all waste material and grass not excceding 50 Mtrs distance from installation ,depositing where directed at a level not exceeding 1.5 Mtrs above the starting point and cleaning of yard, Complete all as specified and directed by EIC. (ii) Cleaning should repeat in same installation in every three months

M&L in replacement for covering for PCB pannels, ducting supports, bracings, hangers, clamps and back plates fabricated from structural steel sections including nuts, bolts ,washers ,welding, bending cold or hot drilling holes for bolts in any shape or size as indicated or directed and inclusive of one primer coat one under coat and one finishing coat of paint complete all as specified and directed.

Dismantling and taking down/removing of damaged fan blades with fan cover (outer) of any description and in any position from electric motors all as directed and S&F Fan blades fabricated to shape and size of Zink Aluminum cast alloy as per sample for electric motor with key and key grove complete all as directed for the following capacity motors :- (a) 2 HP to 7.5 HP

Ditto as item No 95.00 5 HP to 7.5 HP

Ditto as item No 95.00 but for 15 HP

Ditto as item No 95.00 but for 10 HP to 15 HP

Ditto as item No 95.00 but for 50 to 60 HP (Compressor's motor)

S&F in replacement contactor, 415, AC 3 rating, 115 Amp as exist on site complete all as specified and directed.

S&F in replacement Bag Filter Type-50/34 (Size 610 x 610 x 305 mm) (MERV-13) complete all as specified and directed.

Supply only suction valve ring plate for compressor set, 30 TR capacity of Make: Accel , Model: SMC-8-65 complete all as specified and directed.

Supply only Discharge valve ring plate complete complete all as specified and directed.

Supply only Safty valve assembly complete all as specified and directed.

Supply only connecting rod bolt complete all as specified and directed.

Supply only Lock nut crankshaft complete all as specified and directed.

Supply only Split pin complete all as specified and directed.

Supply only Half section of BRG 0.75mm under size complete all as specified and directed.

Supply only Bushing with detachable collar complete all as specified and directed.

Supply only Piston with pin and rings complete all as specified and directed.

Supply only Bushing for piston pin complete all as specified and directed.

Supply only Valve spring complete all as specified and directed.

Supply only Spring for unloading pin complete all as specified and directed.

Supply only Set of Gasket SMC 8-65 complete all as specified and directed.

Supply only Set of sealing ring complete all as specified and directed.

Supply only Set of Neoprene O ring complete all as specified and directed.

Supply only Cylinder linder with suction valve complete all as specified and directed.

Supply only Seeger ring complete all as specified and directed.

Supply only Suction Stariner for SMC 8-65 complete all as specified and directed.

Supply only Oil Stainer complete all as specified and directed.

Supply only Hand shut off valve complete all as specified and directed.

Supply only Set of dowry ring complete all as specified and directed.

Supply only Set of Aluminum packing complete all as specified and directed.

Supply only Oil pump repair kit complete all as specified and directed.

Supply only Oil pump complete all as specified and directed.

Supply only Unloader cylinder assembly complete all as specified and directed.

Supply only Single frame for unloading complete all as specified and directed.

Supply only Oil pressure valve complete all as specified and directed.

Supply only angle valve assembly as per existed complete all as specified and directed.

S&F in repair Loader / Unloader valve of existing size of model SMC8-65 compressor complete all as specified and directed.

S&F in repair pilot control solenoid valve for SMC8-65 compressor complete all as specified and directed.

S/F in repairs of liquid line stainer filter for SMC-8-65 complete all as specified and directed.

S&F in repair shaft seal assembly of compressor of ACCEL make Model SMC - 8-65 complete all as specified and directed.

S&F in replacement condenser unit for water cooled AC plant capacity upto 15 TR for one chiller system , maximum working pressure at tube side 120 PSI and shell side pressure 315 PSI at temp of 150° (Pneumatic Pressure at tube side 150 PSI and shell side 375 PSI) , dimensions of unit is 1.25m length and Dia 0.20m approx as existing on site (transmitter).

M&L for taking out / purging of refrigerant gas from the system of A/c plant 3 x 15 TR capacity for carrying out vacuum test by vacuuming the whole A/c plant with the help of vacuum pump and checking the complete system for leakages. Carrying out the pressure test by charging the nitrogen gas in the system and checking of any leakage point , repair / rectification of the same and removing the nitrogen gas from the system and charging of refrigerant gas including charging of additional gas as required and complete all as specified and directed. Note:- (i)The arrangement of T&P Nitrogen gas shall be contractors responsibility (ii) Refrigerant gas shall be measured and paid separately.

M&L for taking out / purging of refrigerant gas from the system of A/c plant 3 x 30 TR capacity for carrying out vacuum test by vacuuming the whole A/c plant with the help of vacuum pump and checking the complete system for leakages. Carrying out the pressure test by charging the nitrogen gas in the system and checking of any leakage point, repair / rectification of the same and removing the nitrogen gas from the system and charging of refrigerant gas including charging of additional gas as required and complete all as specified and directed. Note:- (i)The arrangement of T&P Nitrogen gas shall be contractors responsibility (ii) Refrigerant gas shall be measured and paid separately.

M&L taking out / purging of refrigerant gas from the system of AC plant 3 x 65 TR capacity for carrying out vacuum test by vacuuming the whole A/c plant with the help of vacuum pump and checking the complete system for leakages. Carrying out the pressure test by charging the nitrogen gas in the system and checking of any leakage point , repair / rectification of the same and removing the nitrogen gas from the system and charging of refrigerant gas including charging of additional gas as required and all as directed. Note:- (i)The arrangement of T&P Nitrogen gas shall be contractors responsibility. (ii) Refrigerant gas shall be measured and paid separately.

M&L repairs to Pakage type air conditioner in situ position of capacity mentioned below of any make and any type by replacing unserviceable compressor and other parts from the machine including charging of refrigerant gas after vaccuming and leak testing including brazing the suction / discharge tubes where required and cleaning of condensing unit to achieve proper cooling effect, checking of electronic circuit of machine and repair where necessary by replacing electronic parts and changing of wirings with of PVC insulated wires as per existing type and testing commissioning complete all as specified and directed. Note:- (i) Compressor and other parts needed for repair shall be measured and paid separately under relevent item given in schedule 'A' here in after as supply only. (ii) Existing refrigerant gas shall be preserved in a empty cylinder for re-use in new compressor and additional requirement of refrigerant charging shall be measured and paid separately under relevant item of this schedule.

S&F multi capacitor complete as per existing one and complete all as specified and directed.

M&L for dismantling the existing unservceable sensing unit of ductable Spit AC 7.5/8.5 TR, S&F new sensing unit of ductable split AC unit 7.5/8.5 TR complete all as specified and directed.

M&L for dismantling and refixing new outdoor fan motor single phase 240 volt AC as per existing size for ductable split AC 7.5/8.5 TR capacity complete all as specified and directed.

S&F in repair Condenser unit assembly for 7.5 TR capacity complete as per existing one and complete all as specified and directed.

S&F in repair new indoor blower motor single phase 240 volt AC as per existing size for ductable split AC 7.5/8.5 TR capacity complete all as specified and directed.

Supply and fill Refrigerant Gas R- 22 in the central AC plant where ever required to fill complete all as specified and directed.

Supply and fill Refrigerant Gas R- 134a in the central AC plant where ever required to fill complete all as specified and directed.

Supply and fill Refrigerant Gas R- 410A in the central AC plant where ever required to fill complete all as specified and directed.

S&F in replacement scroll compressor suitable for 12 TR chiller plant (capacity 12 TR) with Gas charge as suitable , max opertating currnet 35A, thermally protected , refrigerant R-22 (UL rating) and R-417A with 160 SZ, make Danfoss incorpoarted with voltas control panel at TRANSMITTER complete all as specified and directed. Note:- (i) Compressor should be replaced through authorised OEM only. (ii) Prior approval shall have to be obtained from Accepting Officer before execution of work.

M&L for changing of base frame of compressor and compressor motor made out of medium grade iron channels of size MC - 150 grouting in the pcc foundation for the fixing of nuts and bolts of compressor and compressor motors etc complete all as specified and directed.

S&F in replacement inverter type scroll compressor suitable for 80 TR chiller plant (capacity of one compressor apporx 27 TR ) with Gas charge as suitable at ERS &APU, complete all as specified and directed. Note:- Prior approval shall have to be obtain from Accepting Officer before execution of work.

S&F in replacement pilot solenoid valve assembly for central type AC plant as per sample complete all as specified and directed.

M&L for cleaning, servicing, overhauling all component of 15000 CFM AHU including dismantling of side panel where as required, with and including cleaning of heating & cooling coil with caustic soda solution, including welding/brazing, wherever required to arrest leakages, cleaning of Pre-Micro filters, replacing of vertical GI sheet supports, replacement of U/S foam insulation of best quality using adhesive substance to avoid cold air leakages,greasing of bearing and re-assembling all the dismantled components and other packing material to its original position as existing etc, with and including testing, commissioning of air handling unit at optimum efficiency, complete all as specified and directed.

All as per item No. 123.00 here-in-above but for 17000 CFM capacity at parachute bay, complete all as specified and directed.

All as per item No. 123.00 here-in-above but for 22000 CFM capacity at ERS & APU sec, complete all as specified and directed.

All as per item No. 123.00 here-in- above but for 27000 CFM capacity at parachute bay, complete all as specified and directed.

All as per item No. 123.00 here-in- above but for 34000 CFM capacity at ERS & APU sec, complete all as specified and directed.

S&F AHU fan belt of any size as per existing, complete all as specified and directed.

M&L for shock absorbing rubber pads in repairs at the bottom of the AHU unit for absorbing shocks and vibrations, heavy duty of size 150mm x 150mm, complete all as specified and directed.

Taking down carefully existing false ceiling of any type/make/size including all electric fitting/fixture, fire alarm and any other accessories etc for repair/replacement of AC duct and refixing the same in its original position with out any damage, complete all as specified and directed. Note:- If, any kind of damage occured to false ceiling and other services like elcetric supply cable/fitting/fixture, fire alarm, water supply line or any other services, due to negligance or poor workmenship of contractor, the same will be repaired/replaced by the contractor free of cost and no extra payment shall be made in this effect to the contractor.

M&L for cleaning of air handling ducts (GI/Al) internally by using special equipments & tools like robotic arm, air jet nozzles, flipper vaccum pump and a suction blower with hepa filter, complete all as specified and directed. Note:- Internal surface area of duct to the extent ordered and cleaned by the machinery shall only be measured and paid).

M&L for dismantling old/unserviceable/rusted, supply/return/fresh air GI duct of any size/shape/dia with insulation from walls, roofs, ceiling for replacement complete including ducting supports, rubber gaskets, elbows, vanes, & supports as per etc. from any location at central AC plants, complete all as specified and directed.

Supply, assembly and erection in repair of GI sheet with C&SS rectangular/square duct made out of 'L' shapped hollow profile, duly factory boxed, including all accessories such as corner, cleats, carraige bolt, gasket and appropriate sealant on longitudinal joint etc., complete of size 20 gauge, complete all as specified and directed.

S&F in repair duct/wall mounted fire dampers 20 gauge G.I sheet with fusible plug and all accessories, complete all as specified and directed.

S&F in repair superior quality canvas cloth along with Zip and GI frame suitable to connect both AHU and duct including taking down of old material, complete all as specified and directed.

M&L for duct /pipe insulation with 50mm thick resin bonded fibre glass wool roll of density 24 kg/Cum, with factory laminated aluminium vapour barrier, thickness of insulation as specified and including the following:- (i) M&L for cleaning the duct surface (to be insulated ) by scrapping carefully with wire brush etc. to make the surface completely free of millscale, dirt, dust, grease and other foreign materials, taking special care so that all duct joints are sealed against any leakage. (ii) M&L for applying rubber based adhesive CPRX compound. (iii) M&L for sealing of all longitudinal joints and circular overlaps with and including aluminium foil tape 50mm wide, to make the insulation leakproof. (iv) M&L for securing the insulation with and including mechanically fastened nylon/ steel straps of size 12 mm/50mm at maximum intervals of 1.2 mtr.

M&L for cleaning, washing from inside and removing dirt, scalling, fungus and any other foreign material from service water tank upto 2000 Ltr capacity for cooling tower, complete all as specified and directed.

Dismantling of angle iron or mild steel work, complete all as specified and directed.

M&L for mild steel work comprising of angle iron, MS sheet, bracings, ducting supports, clamps and back plates fabricated from structual steel sections including nuts,bolts washers,welding, bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primer coat, complete all as specified and directed.

Ditto as item No 141.00 but for 3 HP

Ditto as item No 141.00 but for 10 HP to 15 HP

Ditto as item No 141.00 but for 50 HP to 60 HP (Compressor's Motor)

M&L for repair of condenser motor pump / chiller motor pump any type including replacement of impeller and bearings both sides, mech seals , polishing , grinding of the pump of 7.5 HP capacity complete all as specified and directed.

Ditto as item No 145.00 but for Induction Motor pump of Capacity 5/5.5 HP

Ditto as item No 145.00 but for induction motor capacity 02/03 HP

Ditto as item No 145.00 but for induction motor capacity 15 HP

Disconnecting and taking down for the 5 HP to 7.5 HP Capacity of motors existing unserviceable terminal plate of any description and in any position S&F terminal plate, 3 phase, six wire, bakelite, star delta connection as required at site with brass studs, two nuts and two washer complete all as specified and directed.

Ditto as item No 149.00 but for 02/03 HP

Ditto as item No 149.00 but for 10 to 15 HP

Ditto as item No 149.00 but for 50 to 60 HP (Compressor's motor)

M&L for disconnecting electrical connections of motor located at the top of cooling tower,keep cables at safe custody for reconnection and dismantling and taking out fan blade assembly along with motor mounted on base frame at the top of cooling tower after cutting/dismentaling all nuts, bolts and fixtures from the mounting frame and removing whole assembly including motor and base frame from the top of cooling tower with the help of T&P for servicing of cooling tower suitable for 100 TR capcity including following complete :- (i) Cleaning the cooling tower by applying wire brush, washing powder and other solvent by removing the deposited impurities sush as silt, dust particles mud/ sand inside the dume and around the fins, cleaning of base tray and grills, pot stainer. (ii) servicing cooling tower plant through cleaning re-agent complete pipe line,including servicing of cooling tower motor and fan and make the necessary alignment with motor. (iii) Replacement of bearing if any of suitable cap if any after necessory work including gressing and replacement of nut bolts and preventing leakage if any by means of suitable adetives etc all as directed and specified. (iv) Taking out PVC fills blocks, cleaning , refixing and replacing if unserviceable as per existing location and channel direction. (v) Servicing of spray header and sprinkler assy complete. (vi) Cleaning of water strainer complete. Spares should be measured and paid under relevent items.

Ditto as item No 153.00 but for 130 to 150 TR

Ditto as item No 153.00 but for 200 TR

S&F cooling tower fan blade set as per existing model and site requirment complete all as specified and directed.

S&F PVC Fills (small size) in colums of size 60 x 30 x 15 cm or next higher size, LPS fills with tie rod and turn buckle of suitable size to match the system as per existing specification and requirement complete all as specified and directed.

S&F Ball/Roller bearing for Sprinlkler top and bottom Hub for Central AC Plant as existing complete all as specified and directed.

S&F in replacment of Float valve (brass) 25MM Ball brass valves, high pressure, with polythene float and flynut complete, screwed for iron pipe or brass ferrule and fixed complete all as specified and directed.

Taking out the existing unserviceable sprinklar of cooling tower and supply, installation, testing and commissioning of new sprinklar assembly complete with header nozzle made out of galvanised iron for cooling tower size of 100 TR (as required on existing site) complete all as specified and directed.

Taking out the existing unserviceable sprinklar of cooling tower and supply, installation, testing and commissioning of new sprinklar assembly complete with header nozzle made out of galvanised iron for cooling tower size of 130 to 150 TR (as required on existing site) as specified and as directed by Engr-in-Charge.

Taking out the existing unserviceable sprinklar of cooling tower and supply, installation, testing and commissioning of new sprinklar assembly complete with header nozzle made out of galvanised iron for cooling tower size of 200 TR (as required on existing site) complete all as specified and directed.

KD SAHA and CO.INDIA (BID ID -3501250)

Shree Ram Construction (BID ID -3502132)

SARKAR ENGINEERING CO. (BID ID -3501630)

M/S ANNI ENTERPRISE (BID ID -3501357)