COMPREHENSIVE MAINT TO CENTRAL AC PLANT OF 02 X 120 TR AND 03 X 20 TR INCLUDING REPLACEMENT OF SPARES AT CHAF BANGALORE

Amount

Comprehensive maintenance of central type air conditioning plant capacity 20 TR comprising the installed machineries and accessories mainly compressor 3 x 20 TR SMC 6-65 model (50% stand by) make:- Accel , belt driven electric motors 12.5 HP - 3 Nos make:- Brown Boweri, condenser- 2 Nos mono block pumping set, Air handling unit - 1 Nos. with belt driven motor, blowers air filters, shaft assembly, cooling coil expansion valve FRP cooling tower etc. completely cleaning removing the dust particles servicing replacement of all the worn out parts greasing, charging of refrigerant (R-22) etc all as required for the efficient , smooth and satisfactorily functioning all as directed by the Engineer in charge.(location :- Family Wing complex.) Note : 1. Following works are inclusive with this comprehensive maintananace for day to day functioning of AC plant in all respects all as directed by Engineer-in-charge. 2. The contractor is responsible to carry out general servicing ,other repairs and charging gas etc by AC plant original manufactures /Engineers/technicians or their authorized distributer /dealer/channel partner,Engineers/technicians only.3. The cost for labour element is to be included in the comprehensive maint amount for items No 3 to19,however the items shall be measured and paid as supply only as per site requitement and the same shall be purchased from original manufactures/authorized distributer/dealers and GST purchase vouchers along with manufactures warranty cert duly defaced /signed by contractor,JE and Engineer-in-charge shall be submitted to deptt during payment claims for verification ,scuritiny,passing of bill and future record purpose.4. A record to be maintained in the register for each visit and the details of repairs/replacement spare parts duly signed by Engineer-in-charge and contractor and the same to be produced at the time payment claims.

(a)Open type AC Plant 20 TR (i) Cleaning electrical control panel & mechanical parts (ii)Checking control panel ,control boards,transducers.(iii)Compressor & motor belt alignment checking. (iv) Check oil level in the compressor.(v)Inspecting the unit for leaks with a soap solution.(vi)Inspect entire system for any unusual conditions such as noise, vaibration,etc.(vii)Check evaporator and condensor approach.(viii)Inspect all safety controls and adjust if required.(ix)Inspect all operating control and sequence of operation.(x) Motor insulation check(xi)Top up refrigerant gas (R-22) if required.

(b)AHUs (i) Cleaning electrical control panel & mechanical parts (ii)Blower & motor greasing (iii)Air filter cleaning (iv)Inspect entire system for any unusual conditions such as noise, vaibration,etc (iv)Check evaporator coil air flow (v)Inspect all safety controls and adjust if required (vi)Cleaning of evapourator coil (vii)Motor insulation checks.

(c)Cooling tower (i) Verify the balance and cleanliness of the return water through distribution boxes (ii)Verify the proper operation of the bypass valve (iii)Verify proper and smooth operation of fan (iv) Verify clean basin and stainers (v) Cleaning spray nozzles & frills clearing Air filter cleaning (iv)Inspect entire system for any unusual conditions such as noise, vaibration,etc (iv)Check evaporator coil air flow (v)Inspect all safety controls and adjust if required (vi)Cleaning of evapourator coil(vii)Motor insulation checks.

Taking down existing unserviceable compressor of make- ACCEL of 3X 20 TR from the plant , dismantling all the parts , transporting to workshop , replacement of worn out and unserviceable parts complete all as directed by Engineer-in-charge. Note-1. Spares shall be measured and paid seperate as under relevant item here-in-after. 2. The firm is responsible to get repair the compressor from the original manufactures / authorised manufacturer distributor/dealer only.

Supply only Main bearing front and rear end

All as per item No 3 above but cylinder liner.

All as per item No 3 above but Connecting rod

All as per item No 3 above but Discharge valve assembly

All as per item No 3 above but Piston assembly

All as per item No 3 above but Oil pump gear wheel with bush

All as per item No 3 above but Rocker arm frame

All as per item No 3 above but Oil filter

All as per item No 3 above but Suction strainer

All as per item No 3 above but Gasket Set

All as per item No 3 above but Crank shaft

All as per item No 3 above but SV Reed

All as per item No 3 above but CR Bearing

All as per item No 3 above but Aluminium Washer Set

All as per item No 3 above but CR Nut & Bolt

All as per item No 3 above but O Ring set

All as per item No 3 above but S V spring

Supply and fixing in replacement liquid line valve for3x20TR plant all as specified and directed

Supply and fixing in replacement solenoid valve for 3x20TR plant all as specified and directed

Supply and fixing in replacement expansion valve for 3x20 TR plant all as specified and directed

Supply and fixing in replacement driving belt as per existing size for the compressor driving motor /AHU driving motor of the plant 3x20 TR all as specified and directed.

Supply and fixing in replacement HP Cut out for 3x20 TR plant all as specified and directed.

Supply and fixing in replacement LP cut out for 3x20 TR plant all as specified and directed.

Supply and fixing in replacement Oil pressure cut out for 3x20 TR plant all as specified and directed.

Material and labour inreplacement compressor oil for 3x20TR all as specified and directed

Supply and fixing inreplacement Oil pump assembly all as specified and directed.

Supply and fixing inreplacement of DOL starter for pump set upto 3 HP all as specified and directed.

Material and labour for carefully opening the motor of compressor for repairs and servicing shifting to local work shop taking out the burnt windings, cleaning of slots and rewinding the same with copper winding wire of existing gauge and quantity heating applying shellac varnish to the windings, replacing insulating materials as required baking up and assembling back including replacing the bearings bushes using hydraulic pressure for 12.50 HP capacity 380/415 volt, 3 phase 50 HZ all as specified and directed

All as per item No 30 Above but 3 HP capacity for AHU/Condensers 380/415 volt, 3 phase 50 HZ all as specified and directed

All as per item No 30 Above but 2 HP capacity for cooling tower 380/415 volt, 3 phase 50 HZ all as specified and directed

Material and labour for taking out the monoblock pumping set 3 HP from the foundation after disconnecting and dismantling the water supply inlet and out let and plug it off, transporting the pumping set to local work shop and back for necessary repairs and replacement of bearing/bushes impellar and install at site replacement of corroded base plate tesing for its satisfactory performance of mono block pump set all as directed

Supply and fixing in replacement over load relay of range 10 to 16 Amps ML1.5 starter with coil voltage 415 volt of all as specified and directed. Make:- L&T equivalent in Schneider/Siemens

Supply and fixing in replacement starter timer suitable for ML1.5 starter all as specified and directed.

Supply and fixing in replacement of contactor assembly suitable for ML 1.5 starter.all as specified and directed .

Material and Labour for painting with super Synthetic enamel paint two coats after cleaning and scrapping out the surface as required to machineries and accessories to the plant air conditioning central type 3x20 TR including one Nos. AHUs , condensor 03 Nos , compressor-03 Nos ,compressor motor -03 Nos ,Pump-02 Nos,LT Panel, Liquid line, discharge lines , suction line approx 25 mtr complete all as directed

Material and labour in replacement and charging of refrigerant (R-22).for 3x20TR plant all as specified and directed.

Comprehensive maintenance of central type air conditioning plant capacity 2x120 TR comprising the installed machineries and accessories as and when ordered as in preventive maintenance mainly compressor 2 x 120 TR ERDX120 2P model (50% stand by) make:- Voltas , belt driven electric motors 12.5 HP - 2 Nos , condenser- 2 Nos mono block pumping set, Air handling unit - 7 Nos. with belt driven motor, blowers air filters, shaft assembly, cooling coil , expansion valve FRP cooling tower etc. completely cleaning removing the dust particles servicing replacement of all the worn out parts greasing, charging of refrigerant (R-134a) etc all as required for the efficient , smooth and satisfactorily functioning all as directed by the Engineer in charge.(location :- OT complex.) Note : 1. Following works are inclusive with this comprehensive maintenance for day to day fuctioning of AC plant in all respects all as directed by Engineer-in-charge. 2. The contractor is responsible to carry out general servicing ,other repairs and charging gas etc by AC plant original manufactures /Engineers/technicians or their authorized distributer /dealer/channel partner,Engineers/technicians only. 3. A record to be maintained in the register for each visit and the details of repairs/replacement spare parts duly signed by Engineer-in-charge and contractor and the same to be produced at the time payment claims.

(a)Chiller AC Plant 2x120 TR (i) Cleaning electrical control panel & mechanical parts (ii)Checking microprocessor control panel ,control boards,transducers(iii)Compressor & motor belt alignment checking (iv) Check oil level in the compressor(v)Inspecting the unit for leaks with a soap solution(vi)Inspect entire system for any unusual conditions such as noise, vaibration,etc(vii)Check evaporator and condensor approach(viii)Inspect all safety controls and adjust if required(ix)Inspect all operating control and sequence of operation(x) Motor insulation check(xi)Top up refrigerant gas (R-134a) if required(xii) Motor pump greasing,pulley,bearings,pumpseal etc(xiii)Check liquid sight glass to determine if there is refrigerant shortage.(xiv)Compare the chilled water temp at full load

(b)AHUs (i) Cleaning electrical control panel & mechanical parts (ii)Blower & motor greasing(iii)Air filter cleaning(iv)Inspect entire system for any unusual conditions such as noise, vaibration,etc(iv)Check evaporator coil air flow(v)Inspect all safety controls and adjust if required(vi)Cleaning of evapourator coil(vii)Motor insulation checks

(c)Cooling tower (i) Verify the balance and cleanliness of the return water through distribution boxes (ii)Verify the proper operation of the bypass valve(iii)Verify proper and smooth operation of fan (iv) Verify clean basin and stainers (v) Cleaning spray nozzles & frills clearing Air filter cleaning(iv)Inspect entire system for any unusual conditions such as noise, vaibration,etc(iv)Check evaporator coil air flow(v)Inspect all safety controls and adjust if required(vi)Cleaning of evapourator coil(vii)Motor insulation checks

Material and labour for dismantling of electric driven induction motor of capacity up to 2 HP 230 volt, single phase 50 HZ of various AHUs for exhaust air of 2X120TR AC Plant repairs and servicing shifting to local work shop taking out the burnt windings, cleaning of slots and rewinding the same with copper winding wire of existing gauge and quantity heating applying shellac varnish to the windings, replacing insulating materials as required baking up and assembling back including replacing the bearings bushes using hydraulic pressure all as specified and directed

All as per Item No 40 above but of capacity 5 HP 380/415 volt, 3 phase 50 HZ of cooling tower 2x120TR AC Plant and AHUs of various OTs complete all as specified and as directed.

All as per Item No 40 above but motor of capacity 7.5 HP 380/415 volt, 3 phase 50 HZ of condenser water pump set of 2x120TR AC Plant complete all as specified and as directed.

All as per Item No 40 above but motor of capacity 12.5 HP 380/415 volt, 3 phase 50 HZof Chilled water pump set of 2x120TR AC Plant.complete all as specified and as directed.

Material and labour in replacement electric driven induction motor of capacity 1 HP 230 volt, single phase 50 HZ of various AHUs for exhaust air of 2X120TR AC Plant all as specified and directed

Material and labour for repair to chilled water Split casing pumpset of 12.5 HP for 2x120TR plant by disconnecting suction & discharge water lines and removing of electric connection, dismantling the U/S pumpset from MS foundation, opening the pump, remelting the shaft and filling of metal at decayed portions including all kind of machine works i.e. welding, turning, polishing etc as required to make the shaft of required shape and size, as original, balancing the shaft and refitting in pump body replacement of Cushy foot anti vibration pad with and incl carrying out complete repair / replacement /servicing of damaged parts i.e. bearings bush, gland plate, gland packing, coupling cleaning of impeller assembly etc and reassembling the pump after greasing of moving parts and reinstallation of the pump with motor in original location using new MS stud, nut, bolt, washer and other packing material etc; checking the alignment; reconnecting the suction and delivery pipes, testing and commissioning for smooth operation complete all as directed.

All as per Item No 45 above but of Condenser water Split casing pump set of capacity 7.5 HP complete all as directed.

M & L for descaling the condensers units of AC Plant capacity 2x120 TR after dismantling the inlet and out let of water/refrigerant gas connections and circulating descaling HCL acid/chemical with help of external pump, brushing the condenser tubes removing the scale neutralizing the base of tubes by circulating neutralizing agent replacement of rubber gasket for the end covers of the condenser removing the dummies connecting the water pipe line /refrigerant connections, removing the air,including refilling the removed refregerant(R 134a) gas, leak testing checking gas pressure and testing complete all as specified and as directed.

M & L for descaling the condensers units of AC Plant capacity 3x20 TR after dismantling the inlet and out let of water/refrigerant gas connections and circulating descaling HCL acid/chemical with help of external pump, brushing the condenser tubes removing the scale neutralizing the base of tubes by circulating neutralizing agent replacement of rubber gasket for the end covers of the condenser removing the dummies connecting the water pipe line /refrigerant connections, removing the air,including refilling the removed refregerant(R 22) gas, leak testing checking gas pressure and testing complete all as specified and as directed.

Matrerial and labour for servicing of chilled Water cooled type cooling coil of AHUs of capacity 2400 to 3200 CFM/26-39GPM including cleaning of complete AHU and cooling coil with necessary chemicals/caustic soda liquid of required quantity, and giving final water wash and refixing the same,cleaning and drying of suction / disharge filters,blower and all accessories including replacement of connected canvas cloth of existing type between AHU and duct all as directed.

All as per Item No 49 here-in-above but for AHUs of capacity 3500 to 9800 CFM/52-96 GPM of chilled Water cooled type

Material and labour for dismantling the side cover of existing cooling tower carefully without damaging the other portion of cooling tower removing unserviceable PVC frills carefully from cooling tower, and fix new PVC frills for cooling tower of 2x120 TR capacity including replacement of unserviceable bolts and Nuts etc of supporting media all as directed.

All as per item No 51 here-in-above but of capacity 3x20TR

Supply and fixing in replacement of Condenser water pipe line of size 125 mm dia MS pipe of medium grade class 'B' black in colour all as specified and directed

Supply and fixing in replacement of Condenser water pipe line of size 150 mm dia MS pipe of medium grade class 'B' black in colour all as specified and directed

Material labour for removing/cutting existing old rusted MS pipe line of size 125/150 mm to the required length and fixing new line in the existing position with necessary welding jointing fixing with suitable size/nos flanges, gaskets including bolts nuts washers complete on necessary qty of PCC bed of suitable size and height and painting of pipes with two coats of synthetic enamel paint of existing colour over a coat of primer all as specified. Note: (i) Rates are deemed to be included for providing necessary PCC work (ii) length of new pipe will measured and paid seperately under relavant item 53 and 54 above

Supply and fixing in replacement of power contactor of 6.3-9 Amp 415V AC rating, 03 pole, with 2NO+2NC Aux Contacts, 415V, with and including taking down of unserviceable contactor and making all electric connection, complete all as directed.

All as per srl item No 56 here-in-above but 32 Amps capacity

All as per srl item No 56 here-in-above but 25 Amps capacity.

Supply and fixing in replacement of over load relay range 20-32 Amps, direct / separate mounting on contactors, as required, with and incl taking down of unserviceable relay and making all electric connection, complete all as directed.

All as per srl item No 59 here-in-above but 12-16 Amps capacity.

All as per srl item No 59 here-in-above but 6-10 Amps capacity.

Supply and fixing in replacement of phase failure relay 3 Ph 415V 6-32A as existing type with high voltage, low voltage and neutral fail protection, complete all as directed.

Supply & Fixing in replacement Moulded Case Circuit Breakers of 63A 3 pole 415V 10 kA Fixed Thermal & Fixed Magnetic setting for Motor starter control mains complete all as directed.

Supply & Fixing inreplacement Moulded Case Circuit Breakers 3 pole 415V 100A 16 kA Fixed Thermal & Fixed Magnetic settingfor LT panel control mains complete all as directed.

Supply & Fixing inreplacement Moulded Case Circuit Breakers 415V 400A FP 36 kA adjustable Thermal & Fixed Magnetic setting for LT panel control mains complete all as directed.

Supply & Fixing in replacement Power contactor with in built conventional coil 230v/415v of Compressor motor starter of Cap upto 195/225 A type for 2x120TR AC Plant complete all as directed.

Supply & Fixing in replacement Power contactor with in built conventional coil 230v/415v of Compressor motor starter of Cap upto 140/150 A type for 2x120TR AC Plant complete all as directed.

Supply & Fixing in replacement push button, projecting head (push function) type, for controling the motors starters of cooling tower/water pumps etc complete all as directed.

Supply & Fixing in replacement of LED type indicator lamp of red/yellow/blue/colour for phase indication, complete all as directed.

Supply & Fixing in replacement CI butter fly valve, Hand liver operated ISI marked, PN - 1.0 pressure grade, having Nitrile/EPDM/nylon rubber lining, SS stem, CS/SS disc, of size 125 mm dia bore including all jointing material i. e. nut, bolt, washer, packing material etc, duly insulated on fixing complete all as directed.

All as per sl item No 70 here-in-above but 150 mm dia size.

Supply & Fixing in replacement in replacement, of gun metal gate valve of 20 mm dia bore size with iron wheel head, screwed inside, non-rising stem, complete all as directed.

All as per srl item No 72 here-in-above but of 25 mm bore size.

Supply & Fixing in replacement of Air Vent valve, 20 mm dia ISI marked with and incl all fixing accessories, complete all as directed.

Material & Labour for insulation for MS pipe of size 150 mm dia with PUF moulded type 40/50 mm thick with and incl applying bituminous compound and aluminium cladding with suitable gauge aluminium sheet with and incl taking down of old insulation and preparing of pipe surface by scratching / removing rust, dust and old paints etc with wire brush, emery paper, grinder etc and making surfaces smooth, complete all as directed.

All as per srl item No 75 here-in-above but of 80 to 125 mm bore size.

Material & Labour for cleaning to FRP base of cooling tower 2x120 TR capacity by dismantling coupling cooling fan, draining out of water, removing algey, silt etc, cleaning & servicing of mechanical components and welding to cross members and frame bracing components incl repair/over hauling the complete transmission system of cooling tower and re-assembling all the dismantled components to its original position, complete all as directed.

Material & Labour for cleaning to FRP base of cooling tower 3x20 TR capacity by dismantling coupling cooling fan, draining out of water, removing algey, silt etc, cleaning & servicing of mechanical components and welding to cross members and frame bracing components incl repair/over hauling the complete transmission system of cooling tower and re-assembling all the dismantled components to its original position, complete all as directed.

Material & Labour for Structural steel work with Fe-290 (Gde E-165) with compound girder and stanchoins , lattice girders, aerial mast staging of water tank and like inluding caps bases splices etc built up from two or more beam or channel section or angle with plates, including all lattice bars, stiffeners , gusset plate etc and replacement of necessary MS angles of size of suitable length with necessary fittings and fixtures bolts nuts washers etc including required welding work complete all as specified.

Material & Labour for applying one coat of primer and synthetic enameled spray paint of existing colour on 2x120TR Ac plants steel/iron surfaces of MS structurals,pipes ,compressors-02 Nos, Pumps-04 Nos Condensor-02 Nos motors condensor inlet outlet pipeline incl preparing of surface by scratching / removing rust, dust and old paints etc with wire brush, emery paper, grinder etc and making surfaces smooth for achieving better grip between surface and primer, complete all as directed.

Supply and fix in replacement pvc sprinkler set assembly as in existing type/size of FRP cooling tower suitable for up to 2x120 TR capacity including removing of unserviceable sprinkler set with fittings/fixtures complete all as specified and as directed

All as per Item No 81 here-in-before but for FRP cooling tower of 3x20 TR capacity

Supply and fixing inreplacement of thermostatic expansion valve suitable for 2x 120 TR capacity chiller with screw compressor complete all as specified and as directed.

Supply and fixing water pressure gauge 0 - 10.6 kg and 4" dia suitable for condenser / Chiller water line including removing of old/unserviceable pressure gauge complete all as specified and as directed.

Supply and fixing suction/ discharge/oil pressure gauge of 0-150 PSI equivalent in Kg/ Cu cm for central type AC plant including removing of old unserviceable pressure gauge complete all as specified and as directed.

Supply and fixing resin bonded fibre glass insulation with 50 mm thick with one side factory laminated with aluminium foil wrapping around for existing ducts of any size including FRP Polyshield sheet of each layer of 1mm thick wrapped and held in position by 1.0mm dia GI wire around the duct from AHUs to wall entry into OTs to prevent water ingress where ever necessary including taking down old teared insulation with cover sheet complete all as specified

Material & Labour inreplacement and charging of refrigerant (R-134a).for 2x120TR plant all as specified and directed.

Supply and fixing in replacement driving belt as per existing size for the compressor driving motor /AHU driving motor of the plant 2x120 TR all as specified and directed .

Material & Labour for pressure testing and rectifying the leakages found in the system of 3x20 TR capacity including vacumizing and charging of the refrigerantgas to the desired pressure etc using nitrogen complete for satisfactory functioning all as specified and as directed. Note: Topping up of gas (R22) if required will be measured and paid seperately

Material & Labour for pressure testing and rectifying the leakages found in the system of 2x120 TR capacity including vacumizing and charging of the refrigerantgas to the desired pressure etc using nitrogen complete for satisfactory functioning all as specified and as directed. Note: Topping up of gas (R134a) if required will be measured and paid seperately

Supply and fixing inreplacement synthetic rubber insulating mat of size 2mx1mx3mm all as specified and directed.

Supply and fixing in replacement gun metal gate valves 50mm with iron wheel head screwed both ends for GI pipe of 3x20TR all as specified and directed

Supply and fixing in replacement dehumidifier as per existing type and make for 3x20TR all as specified and directed

Supply and fixing in replacement thermostate as per existing type and make for 3x20TR all as specified and directed

Material &Labour for servicing as in Preventive maintenance and repairs to centralised compressed air system to AFIDS consisting of reciprocating type air compressor with squirrel cage induction motor 3 phase 5 HP 2 Nos, compressed air receiver tank 500 litres capacity 1 No, cut out switches 2 nos, Air filter dryer, flow control valves for 16 Nos outlets distribution pipe line of 3/8" 1/2" & 3/4" dia complete including replacing of unserviceable spares, initial replacement of compressor oil and toping up as and when required basis, cleaning the complete system externally to keep the plant clean and tidy and satisfactory functioning through out the maintenance period to the entire satisfaction of Engr-in-Charge as and when ordered Notes: (i) Replacement of spares costs below Rs 500/- are deemed to be included in the rate quoted

Material &Labour for dismantling of electric driven induction motor of capacity 5 HP 415 volt, 3 phase 50 HZ of centralised compressed air system repairs and servicing shifting to local work shop taking out the burnt windings, cleaning of slots and rewinding the same with copper winding wire of existing gauge and quantity heating applying shellac varnish to the windings, replacing insulating materials as required baking up and assembling back including replacing the bearings bushes using hydraulic pressure all as specified and directed

Material and Labour for painting with super Synthetic enamel paint two coats after cleaning and scrapping out the surface as required to machineries and accessories to the centralised compressed air system complete all as directed

Supply & fixing in replacement DOL starter suitable for 5HP motor all as specified and directed.

Supply and fixing in replacement Air Pressure cut off switch operates between 30-90 PSI for Air compressor plant fixed in replacement all as specified

Supply and fixing in replacement Air filter of existing size operates between 30-90 PSI for Air compressor plant all as specified and directed.

Material &Labour for applying one coat of primer and synthetic enameled spray paint of existing colour on 3x20TR AC plants steel/iron surfaces of MS structurals,pipes incl preparing of surface by scratching / removing rust, dust and old paints etc with wire brush, emery paper, grinder etc and making surfaces smooth for achieving better grip between surface and primer, complete all as directed.

Supply & fixing in replacement of MS/GI hot dip galvanised/powder coated ladder type cable trays of width 300 mm, Height-75 mm and thickness 2.50 mm, including necessary coupler plates,Tees, cross,horizontal/vertical, nut and bolt arrangements complete all as specified and directed.

Supply & fixing in replacement of MS hot dip/powder coated perforated cover for cable tray of width 300 mm, thickness 2.50mm ,including necessary nut and bolt arrangements complete all as specified and directed.

Material and labour for mixed cement concrete (1:3:6) type M10 using 12.5 mm graded coarse aggregate for base to cable tray complete all as specified and directed.

Glacier Cooling Solutions Private Limited

UNIVERSAL ENGINEERING

RAHUL ENTERPRISES