82419 REPAIRS TO SPLIT WINDOW TYPE ACs COOLING APPLIANCES VOLTAGE STABILISERS ETC AT VARIOUS LOCATIONS AND COMPREHENSIVE MAINTENENCE OF CENTRAL AC PLANT AT CHENNAI

Amount

Dismantling the unserviceable uncut hermitically sealed compressor, any make, from the window AC unit and replacement with factory re-conditioned hermitically sealed compressor for window Air conditioner including transporting for 1.5 Ton capacity and servicing the entire unit all as specified and directed. Note : Old unservicable compressor shall be taken into credit

All as per Sl item No 1.00 here-in-before but 2.0 Ton capacity

Dismantling the unserviceable uncut rotary compressor from the window AC unit and replacement with new rotary compressor, 2 Ton capacity and including servicing the entire unit complete all as specified and directed Note :- (i) Compressor test reports along with warranty to be provided for record. Note for sl item No. 1 to 3 here-in-before: (i) Gas shall be measured and paid separately

Supply and fix cooling coil for window type AC 1.5 Ton / 2.0 Ton capacity including dismantling the existing unserviceable cooling coil and servicing the entire unit complete all as specified and directed.

All as per Sl item No. 4.00 here-in-before but condensor coil and including servicing the entire unit.

All as per Sl item No 4.00 here-in-before but for Standard outer cover. (Make : As per exiting make/model)

All as per Sl item No 4.00 here-in-before but front panel with grill

All as per Sl item No 4.00 here-in-before but fan blade set.

All as per Sl item No 4.00 here-in-before but new fan motor 1/5HP

All as per Sl item No 4.00 here-in-before but thermostat switch.

All as per Sl item No 4.00 here-in-before but air filter suitbale for AC upto 1.5 Ton capacity

All as per Sl item No 4.00 here-in-before but wiring kit

Material and labour for Spray painting to the whole unit of window type air conditioner 1.5/2.0 Ton by two coats of synthetic enamel paint after cleaning the unit assembly with castic soda wash complete all as specified and directed.

Cutting opening of size 910 x 675 x 250mm through brick wall built in cement mortar of any description for fixing window type AC 1.5 TR capacity, making good the disturbed surfaces with cement plaster in CM 1:6, 15mm thick and supply and fix second class hard wood timber frame of size 120 x 100mm in opening with suitable mild steel hold fast and also providing mild steel angle of size 40 x 40 x 5mm thick for rear side supporting of window AC, including white wash/ distembering the wall to match the existing and painting of wooden / steel surface with synthetic enamel paint at the opening etc., complete all as specified and directed.

Dismantling the unserviceable uncut hermitically sealed compressor from the split type AC unit and replacement with factory reconditioned hermitically sealed compressor of any Make including transporting for 1.5 Ton capacity and including servicing the entire unit complete all as specified and directed. Note : Old unservicable compressor is to be deposited at MES store yard.

All as per Sl item No 15.00 here-in-before but of 2.0 Ton capacity.

Dismantling the unserviceable uncut rotary compressor from the split type AC unit and replacement with new rotary compressor 1.5 Ton capacity and including servicing the entire unit complete all as specified and directed.

All as per Sl item No 17.00 here-in-before but suitable for 2.0 Ton capacity. Note for item 15 to 18 here-in-before : Gas charging and leak testing etc... shall be measured and paid seperatly.

Replacement of Unserviceable remote control suitable for 1.5 Ton/2.00 Ton capacity Split type AC of any make complete all as specified and directed.

All as per Sl item No 19.00 here-in-before but Electronic PCB board.

All as per Sl item No 19.00 here-in-before but fan motor 1/6HP capacity and including servicing the entire unit.

All as per Sl item No 19.00 here-in-before but Condenser coil and including servicing the entire unit.

All as per Sl item No 19.00 here-in-before but suction valve,

All as per Sl item No 19.00 here-in-before but discharge valve

All as per Sl item No 19.00 here-in-before but Indoor unit blower motor of 1.5/2.0 ton capactiy

All as per Sl item No 19.00 here-in-before but PVC drain pipe flexible type of suitable size

All as per Sl item No 19.00 here-in-before but fan blade set

All as per Sl item No 19.00 here-in-before but wiring kit complete

Replacement of new indoor unit for split type AC 1.5 ton capactiy and including servicing the entire unit of any make complete all as specified and directed as per the existing make and model.

Matrial and labour for Spray painting to the whole out door unit of split type air conditioner 1.5/2.0 Ton with two coats of synthetic enamel paint after cleaning the unit assembly with castic soda wash complete and including servicing the entire unit all as specified and directed.

Shifting of split type Air conditioner any capacity including supply & fixing of factory fabricated support suitable to mount out door unit (one pair per AC) and duly making holes into wall for insertion of copper pipe,drain pipe and 3 core cable,and making good the distrubed surfaces complete and including servicing the entire unit all as specified and directed.

Dismantling the unserviceable uncut hermitically sealed compressor from the water cooler unit and replacing with factory re-conditioned hermitically sealed compressor for water cooler of any make, 40/ 80 liters capacity and including servicing the entire unit complete all as specified and directed. Note : Gas charging shall be measured and paid separately and old unservicable compressor is to be deposited at MES store yard.

Supply and fix Starting relay for 40 to 150 liters water cooler including dismantiling the old unserviceable one and servicing the entire unit complete all as specified and directed.

All as per Sl item No 33.00 here-in-before but over load protector and including servicing the entire unit.

All as per Sl item No 33.00 here-in-before but thermostat.

All as per Sl item No 33.00 here-in-before but Fan blade assembly suitable.

All as per Sl item No 33.00 here-in-before but wiring kit.

All as per Sl item No 33.00 here-in-before but push cock brass chromium plated of size 15mm.

All as per Sl item No 33.00 here-in-before but branded new fan motor with base 1/10HP

All as per Sl item No 33.00 here-in-before but top lid gasket for 80/120 Ltr capacity

All as per Sl item No 33.00 here-in-before but drain stainless steel tray with drain elbow and connector

All as per Sl item No 33.00 here-in-before but Gate valve brass screwed both ends of size 15mm bore

All as per Sl item No 33.00 here-in-before but Float valves brass with PVC ball complete suitable for 15mm bore, ISI marked

All as per Sl item No 33.00 here-in-before but PVC hose connection pipe with both ends having brass coupling threaded for 15mm GI tubing of standard length

Cutting and removing the existing bottom frame of water cooler of capacity 120/150 ltr and refabrication of bottom frame of suitable size with mild steel angle iron 25 x 25 x 4 mm and welded with 2 mm thick MS sheet upto 30 cms from bottom height, including legs complete all as specified and directed.

Cutting and removing the front bottom cover of water coolers and refixing of new front bottom with 1.6 mm thick MS steel sheet complete all as specified and directed.

Material and labour for painting of water cooler with two coats of paster blue paint to the external surfaces of water cooler and two coats of anti-corrosive black paint over a coat of red oxide primer upto 15 cm height from the base allround including legs for inside of water cooler, of any capacity and including servicing the entire unit all as specified and directed.

Dismantling the unserviceable uncut hermitically sealed compressor from the Refrigerator unit and replacing with factory re-conditioned hermitically sealed compressor for refrigerator any make 200 liters to 310 ltr capacity and including servicing the entire unit all as specified and directed. Note : Old unservicable compressor is to be deposited at MES store yard.

All as per Sl item No 48.00 here-in-before but for 165 to 200 liters refrigerator. Note for sl item No. 48 & 49 here-in-before: Gas charging shall be measured and paid separately

Supply and fix of relay for 165 to 310 liters Refrigerator including dismantling the old unserviceable one complete all as specified and directed.

All as per Sl item No 50.00 here-in-before but over load protector 1/6 HP

All as per Sl item No 50.00 here-in-before but bulb pin/screw type 10/15 W capacity.

All as per Sl item No 50.00 here-in-before but thermostat defrosting type.

All as per Sl item No 50.00 here-in-before but door magnetic gasket

All as per Sl item No 50.00 here-in-before but light switch for refrigerator.

All as per Sl item No 50.00 here-in-before but cooling coil.

All as per Sl item No 50.00 here-in-before but condenser coil.

All as per Sl item No 50.00 here-in-before but freezer door.

All as per Sl item No 50.00 here-in-before but vegetable tray with glass.

All as per Sl item No 50.00 here-in-before but PVC ice tray.

All as per Sl item No 50.00 here-in-before but new frost freezer fan motor.

Renewal of entire portion of base plate and legs ,welding with new MS sheet of proper gauge of refrigerators capacity 165 liters to 310 liters complete all as specified and directed.

Material and labour for two coats of duco paint on exterior face of the refrigerator of any capacity by spray painting including removing the dent etc., complete all as specified and directed.

Dismantling the unserviceable uncut hermitically sealed compressor from the deep freezer unit and replaced with factory re-conditioned hermitically sealed compressor for deep freezer any make up to 425 ltr capacity complete all as specified and directed. Note : Gas shall be measured and paid separately and old unservicable compressor is to be deposited at MES store yard.

Supply and fix of relay box type deep freezer including dismantling the old unserviceable items complete all as specified and directed.

All as per Sl item No 65.00 here-in-before but overload protector 1/6HP.

All as per Sl item No 65.00 here-in-before but door magnetic gasket.

All as per Sl item No 65.00 here-in-before but condenser coil.

All as per Sl item No 65.00 here-in-before but brand new fan motor with base 1/10HP

Renewal of entire portion of base plate and legs ,welding with new MS sheet of proper gauge for deep freezer of capacity 500 liters complete all as specified and directed.

Material and labour for two coats of duco paint on exterior face of the deep freezer of any capacity by spray painting including removing the dent etc... complete all as specified and directed.

Taking out the voltage stablizer of any make and of capacity 4/5 KVA from site and transporting to authorised servicing centre to detect /identify the nature of defects/repairs and reassembling after repair/ servicing and commissioning at site including testing the same to the entire satisfaction of Engineer-in-Charge complete all as specified and directed.

All as per Sl item No 72.00 here-in-before but capactity 3 KVA.

Dismantling the burnt out transformer from the 5 KVA capacity stablizer of any make and rewinding the same with supper enameled copper wire includinguding provision of all materials and refixing into the stablizer and testing to the entire satisfaction of Engineer-in-Charge and testing complete all as specified and directed.

All as per Sl item No 74.00 here-in-before but capactity 4 KVA.

Supply and fixing relay set of two for voltage stabilizer up to 5 KVA capacity complete all as specified and directed.

All as per Sl item No 76.00 here-in- before but PCB (printed circuit board).

All as per Sl item No 76.00 here-in -before but 3 core flexible card 2.5 Sqmm.

All as per Sl item No 76.00 here-in- before but indicating lamp.

All as per Sl item No 76.00 here-in- before but on/ off switch.

Sub main wiring with four runs of single core 6 sqmm multi stranded copper conductor PVC insulated unsheathed cable 1100 volts grade, FRLS and one run of 6 sq mm multi stranded copper conductor cable as earth continuity conductor drawn into and including non-metalic rigid PVC conduit, 25 mm dia and conduit accessories concealed/ surface of wall/roof/ceiling complete all as specified and as directed. Note: Four runs of wire, one run of conduit and one run of earth conductor shall be measured as one unit length.

Supply and fix copper pipe 1/2" dia for all summer appliances of any capacity including dismantling the unserviceable pipe complete all as specified and directed.

All as per Sl item No 82.00 here-in-before but size 3/8" dia

All as per Sl item No 82.00 here-in-before but size 5/16" dia

All as per Sl item No 82.00 here-in-before but size 1/4" dia

Supply & Fixing three core flexible cord copper wire of size 4 Sqmm, complete all as specified and directed.

Supply and fix two pin sheet metal earth plug top and metal clad socket 20 Amps capacity complete all as specified and directed.

Supply and fix single pole and neutral sheet metal enclosure with two pin and earth plug and socket complete with single pole MCB 20 Amps for incoming and out going control complete all as specified and directed.

Supply and fix MCB SP 20/25 Amps, 240 Volts, 10 KA breaking capacity complete all as specified and directed.

Material and labour for replacement of unserviceable UPVC conduit pipe 20 mm dia to drain out pipe including all accessories and taking down the existing one, with fixing arrangment on wall, ceiling etc.,complete all as specified and directed.

Supply only Refrigerant Gas R-22 all as specifed and directed.

Supply & Fix 3 pin 15 Amps plug top, 250 Volts complete all as specified an directed.

Supply only Refrigerant Gas R-410A/R-32 all as specified and directed.

Installation,Testing and commisioning of verticool air conditioner 3 TR after fixing the indoor and outdoor units at proper location including fixing copper pipes (with foam insulation) connecting indoor and outdoor units, fixing the drain pipe from indoor unit to ground floor level complete all as specified and directed.

Supply and fix Sintex SMC of suitable size complete all as specified and directed.

Supply only drain pipe and clamps of suitable size complete all as specified and directed.

CENTRAL AC PLANT 20 TR CAPACITY Supply, fixing, testing and commissioning in replacement of Condenser Coil 1-14FPI-3R MODULAR suitable for air cooled scroll chiller type central AC plant 20TR and plant, and including leak testing and commissioning complete all as specified and directed. Make : M/s Blue Star. Condenser Coil Model No : MODULAR-COCD1031436001

Supply, fixing, testing and commissioning in replacement of Condenser Coil 2-14FPI-3R MODULAR suitable for 20TR Central AC Plant and incl leak testing and commissioning complete all as specified and directed. Make : Blue Star, Condenser Coil Model No : MODULAR-COCD1031436002

Taking down pumpset after disconnecting the electric power supply and keeping the wires/cables in a secured position for reconnecting ,dismantling and taking out unserviceable spares and refixing the same in original position after necessary repair and replacement of spares,grasing of bearings etc., for electric driven pump set 5 HP capacity of any make and taking back to site and refixing at same place and making necessary electrical connection and testing & commissioning all as specified and directed. Note:- Spares will be measured and paid seperately

Rewinding starter coil complete using super enameled copper wire of adequate guage.

Supply and fix in replacement Ball bearing (Drive and Non drive end) complete all as specified and directed. Make : Tata/ SKF

Supply and fix in replacement Cooling fan blade complete all as specified and directed.

Supply and fix in replacement Cooling fan cover with suitable screws all as specified and directed.

Supply and fix in replacement Terminal box with terminal connection all as specified and directed.

Supply and fix in replacement Electric dynamically balanced bronze impeller all as specified and directed.

Supply and fix in replacement Shaft mild steel all as specified and directed.

Supply and fix in replacement Gun Metal bush all as specified and directed.

Supply and fix in replacement Gland cup with bolts and nuts all as specified and directed.

Supply and fix in replacement Flange drilled suitable size with bolts, nuts and washers including rubber gasket all as specified and directed.

Supply and fix in replacement Air cock nozzle brass all as specified and directed.

Supply and fix in replacement damaged grill as per sample (820 mm X 840 mm) complete all as specified and directed.

Supply and fix in replacement damper as per sample complete all as specified and directed.

Material and labour for painting of metal surfaces of central AC plant with two coats of suitable anti-rust paint followed by two coats of anti-corrosive epoxy paints complete all as specified and directed.

Supply and fix in replacement AHU Filter 610 x 610 x 50 mm as per sample complete all as specified and directed.

Supply and fix in replacement AHU Filter 610 x 305 x 50 mm as per sample complete all as specified and directed.

Annual Comprehensive Maintainance of Central AC Plant 20 TR capacity as per the descriptions enumerated below through OEM/Authorised dealers:- (a) Compressor: Checking lubrication oil (level & leakage) and maintain the level by make up if any,Check operation of safety controls, valves and instruments. (b) CONDENSER / EVAPORATOR OF ALL CENTRAL CHILLING PLANTS & COOLING COILS OF AHUs : Check entering and leaving water temperatures, refrigerant pressures and all others parameters.Check tubes and if require, de-scaling shall be carried out by the contractor using special chemicals,Check pressure setting of safety control switches. Check for operation of safety valves. Welding/brazing of leakage points, minor leaks etc., (c) ALL PUMPS (CONDENSOR, CHILLERS, PROCESS, WATER TREATMENT PLANT, ETC. ): Check gland packing and mechanical seals for leakage,Replace gland thread/ mechanical seal if required,Lubricate bearings with grease gun.

(d) INSTRUMENTS & CONTROLS ; checking of operation of all controls, sensors, measuring devices, electronic control cards etc.,Readjustment of control if necessary ,Checking of Refrigerant level sensor, water level sensor, photo sensor, pressure transducer,thermostat, temperature controller with sensor and display, thermocouple, temperature gauge, sight glass, solenoid valves, pressure gauge, oil safety switch, HP/LP cut out, DP switch, flow switch, crank case heater, thermostatic expansion valve, thermostat (operating & antifreeze) smoke detector, air stat,safety valve, limit switch, humidistat, etc...

(e) REFRIGERANT PIPING: Check for leaks at the joints with soap solution test. Repair and replace refrigrent pipes, Checking of WATER PIPING, VALVES & FITTINGS for leaks at the joints. & for leakage from valve glands. (f) A.H.U.: Check condition of drive coupling, sleeves. Belts, pedestal bearings and alignment ,Clean Air filters, check for proper drainage of condensate. (g) DUCT/ DAMPERS (FIRE/VOLUME CONTROL) & GRILLS:Check for any air leakage in the duct ,Check for any insulation damage for ducts,Check for functional operation of dampers and grilles. Lubricate pins of dampers, grilles, wherever required.Check louvers for any damage and cleaning shall be followed. (h) FAN COIL UNIT: Cleaning air filter, strainer, Check for the operation of fan speed regulator ,Motor bushing oiling etc.,

ELECTRICAL MAINTENANCE: (a) MOTOR (COMPRESSOR, PUMP, AHU, FCU, BLOWER, COOLING TOWER etc):Cleaning of motor,Lubricate bearings,Check for proper glanding & tightness of connections (b) ELECTRICAL PANELS AND THEIR CABLING & WIRING:Check for any tripping, chattering in the electrical parts, abnormal noise, overheating in the panels, Check whether indication lamps are working,Check for the proper working of all ammeters, voltmeters, Hour meters, KWh meters, overload relays, contactors malfunction etc., Clean the panels from inside with the help of the blower/ vacuum cleaners ,Check all the cables for overheating, tightness of the glands, lugs & crimping,Check the fuse-link & fuse holders.Check the control wiring of the panel along with the controls for the proper functioning and tripping at the preset parameters. (c) AIRCONDITIONING UNITS :• Check proper locking of inspection doors/cover and their leakages. Clean Air filters, check for proper drainage of condensate. Cleaning of air filters. Cleaning of Cooling Coil and Condenser with nylon wire brush and air blower. Inspect blower fan motor drive, check tension of V-Belt, bearings, alignments, vibration isolator,electrical connections etc. Lubrication, wherever necessary all as specified and directed.

Note:- (i) Compulsory servicing of the entie AC plant to be carried out every quarterly (04 times during the contract period) through OEM/authoried dealers only and the rates quoted are deemed to include for the same. (ii) The compressor will be checked for its proper functioning and if any defect is found,the same shall be repaired /replaced. (iii) Safety controls such as pressure cut outs will be tested for proper functioning and in case of any mal-functioning they shall be either repaired or replacd accordingly. (iv) Air filters shall be inspected and cleaned or replaced, if necessary. (v) Cooling coil shall be inspected and cleaned.

(vi) The blower motor shall be checked and any defects noticed shall be attended to. (vii) The driver set of the blower section shall be inspected, belt tension adjusted and belts changed ,if necessary. (viii) Any defect in the electrical items and control wiring will be attended to. (ix) Refrigerent gas shall be topped up in the system as and when necessary. (x) Activities applicaple to Water cooled units :- a.Condenser water pumps with motors shall be checked for satisfactory functioning.Any repairs to them,if necessary, will be carried out by Contractor. b.Cooling tower nozzles shall be inspected and attended to for proper spray and replaced, if, necessary. c. Contractor shall carryout cleaning of the cooling tower sump once in a year.

(xi) Activities applicable to Air Cooled Units:- (a)The Condenser fan motor shall be attended to. (b)The Condenser coil shall be inspected and cleaned (c) Any repairs in the condenser coil shall be attended to. (d) Repairs to refrigerant piping due to system problems shall be attended to. (xii) All the breakdown calls shall be attended by trained personnels (xiii) Cost of necessary spare parts (except coil and fine filters) and labour charges shall be covered in AMC. (xiv) Cost of necessary consumables including refrigerant gas top-up in the system and the labour charges shall be covered in AMC. (xv) Only genuine parts shall be used.

(xvi) Maintanance chart to be submitted within first five working days of every month and the maintenance job needs to be carried out once every month as per the directions of Engr-in-charge . If Contractor fails to submit the maintainance chart within the the stipulated time Rs. 1000.00 per day will be recovered as penalty till submission of Chart.

Supply and fix in replacement shaft coupling all as specified and directed

Supply and fix in replacement water flow switch as per sample complete all as specified and directed.

Supply and fix in replacement condensor fan motor as per sample complete all as specified and directed .

Supply and fix in replacement AHU belt as per sample complete all as specified and directed .

Supply and fix in replacement compressor contactor as per sample complete all as specified and directed.

Sri Sankar Enterprises

Universal refrigeration and Engineering Company