COMPREHENSIVE REPAIR AND MAINT AND OUTSOURCING OF SERVICES

Amount

Comprehensive maintenance for chilling package of (72X2=144TR) Scroll type refrigeration Compressor (Model No.ACWCDS078DPMN3X2D Make:Voltas ) with R407C refrigerant with Microprocessor panel and suction and Discharge control valves including quarterly visits and monthly periodical inspection with any Nos of visits for attending emergency breakdowns of AC Plant during the contract period at approximately equal intervals by the OEM/Authorised dealer and the maintenance programme will proceed as and when required as per the inspection report provided by company representative and servicing of complete power supply system of the AC Plant including sub panels complete all as specified and directed by the Engineer in Charge as detailed in Notes given here- in- after :-

NOTES FOR SERIAL ITEM NO 01 ABOVE 1.01 Descaling of condenser and chiller tubes to meet the designed specifications of flow of refrigerant in compressor and water in condenser. Descaling will be measured and paid under respective item of this schedule. 1.02 Check leakage and shortage of refrigerant in the machines with soap solution and rectify the system defect causing leakage including topping up of refrigerant. Cost of Refrigerant required for topping up will be measured and paid separately under respective item of this schedule. 1.03 Carry the proper functioning of microprocessor panel and take the control test quarterly and the report needs to be submitted at the time of RAR. 1.04 Monthly Checking for proper working of all Ammeters, voltmeters, Hour meters, KWH meters and overload relays etc and replacing the same if found unserviceable 1.05 Monthly Cleaning of electrical panels and chiller machine periodically. 1.06 Monthly Checking of functioning of water flow switch and interlock in the system. 1.07 Monthly Checking of all safety and operating controls for proper functioning and replace if the same is defective for proper sequence of operation of the machine 1.08 All the breakdowns including compressor failure will be attended and the visit shall not be counted in periodical inspection. 1.09 Monthly Checking of refrigerant filter and drier core, replace the same, if found necessary.

1.10 Monthly Checking of oil level and oil heater in the system and top-up the oil if found necessary. 1.11 Monthly Checking of chilled water flow by checking pressure drop across the chiller 1.12 Monthly Checking of evaporator and condenser approach and compare the chilled water temperature at full load with the chilled water temperature control 1.13 Seasonal adjustment of controls if required and software upgrade once during the contract period 1.14 Inspect entire system for any unusual condition such as noise, vibration etc 1.15 Supply of electrical parts except electrical spares for incoming panel. (Electrical Spares like: - fuses, incoming electrical controls, cables etc) NOTES FOR 1.15 (i) The contractor should carry out servicing through authorised dealer of M/s Tata / Voltas & not by any local area mechanic (ii) The contractor should be responsible to maintain the AC Plant in serviceable condition for entire contract period & additional worn out spare parts of chilling water pumps and condenser pumps like couplings, belts, screws/fixing bolts, pipe, refrigerant & condensed water pressure gauges etc if found unserviceable should be replaced by contractor without any additional cost (iii) Proper servicing certificate should be produced immediately after servicing (iv) Proper register/log sheet for running of AC Plant should be maintained by the contractor for entire contract period (v) The authorised technician should visit once in two months for preventive maintenance & any no of emergency breakdowns.

(vi) No additional labour payment shall be entertained for replacement of any exclusive part of plant. (vii) All type of valves including float valve, quick fill valves, drain valves and other associated items like gear box, strainer, eliminators if found faulty shall be provided by the contractor at no additional cost (viii) Repairs of FRP Cooling Tower/basin and replacement of HUB, blades of fan, fills, nozzle and distribution channels if found necessary will be done by the contractor at no additional cost(ix) Cleaning the vegetation/ shrubs around the plant upto 30 Mtr area will be the responsibility of the contractor (x) This is type 'A' AMC i.e. "ALL IN ALL" . (xi) Quoted Rate should include repair and Maint before AMC (Pre AMC). (xii) Complaints should be attended and rectified in 24 hr otherwise a penalty of ₹10000.00 per day will be recovered from the contractor. (xiii) Leakage and seepage due to AC plant removal is sole responsibility of contractor.

M&L Maintenance and servicing of the chilled water motor pump assembly complete of 7.5 HP including all as specified and directed by Engr-In-Charge

M&L Maintenance and servicing of the condenser water motor pump assembly of 10 HP including all as specified and directed by Engr-In-Charge

M&L Maintenance, servicing and rewinding of motors of AHU’s of Cap up to 10 HP with blowers including replacement of all worn out belts of specified size, replacement of motor / gaskets and greasing to moving parts complete all as specified and directed by Engr-In-Charge

Notes to Item No 4: (a) Check the alignment and conditions of coupling to prevent damage to shaft and impeller. (b) Lubricate bearings with grease guns. (c) Replace gland rope if required. (d) Check lubricant oil level and make up the oil if required. (e) Check packing and mechanical seals for leakage. (f) Half yearly inspection and service for pumps (g) Inspect shaft sleeves, shaft, bearings, bearing housing and overhauling of all pumps. (h) The impeller and shaft to be repaired and made functional. If they are found not repairable, then same shall be replaced. (i) The packing, mechanical seal, bushes, bearings, Shaft sleeves, coupling etc.if found faulty shall be replaced by the contractor without any extra cost.

M&L Taking out & rewinding the existing unserviceable burnt motors of condenser/chiller water motors of Cap Upto 10 HP, three phase, 50 cycles by disconnecting electrically and mechanically and transporting to the locally workshop. Dismantling the motor and removing the old burnt copper winding & demoisturise, cleaning, rewinding the coils with same gauge supper enamelled copper wire, with suitable F class paper insulation, varnishing, and reassembling by replacing bearings reinstalling at the installation and testing, commissioning etc complete all as specified and directed by Engr-in-Charge

M & L Cleaning and spray Painting the surface of motors, condenser pipes, chilled water pipes, cable duct supports of angle iron and all other rough surfaces including all valves and fittings including pumps with two coats of synthetic enamel paint of existing colour over a neat coat of redoxide primer over 10 cm width of girth and making good to the surfaces of all pipe and valves connections at certain places all as specified and directed by Engr-In-Charge

S&F Puff insulation for chilled water piping and valves as in repairs all as specified and directed by Engr-in-Charge

M & L Descaling of condenser tubes required to meet the designed pressure conditions and cooling specifications for desired rate of flow of refrigerant in compressor and water in condenser complete all as specified and directed by Engr-In-Charge

M & L Nitrogen Pressure testing for water cooled screw chillers including refrigerant Recovery, vacuumising and recommissioning of chillers of condenser tubes required to meet the designed pressure conditions and cooling specifications for desired rate of flow of refrigerant in compressor and water in condenser complete all as specified and directed by Engr-In-Charge

S&F Refrigerant R407 C for topping up of refrigerant in the system to compensate any leakge qty of refrigerant complete as in repairs all as specified and directed by Engr-in-Charge

S&F Thermometers as per site requirement to be fixed in chiller lines and condenser pipe lines complete as in repairs all as specified and directed by Engr-In-Charge

S&F Automatic star delta starters in sheet steel enclosure AC-3 duty, 415 V, 10 HP,with ralay range 15-30 A complete as in repairs all as specified and directed by Engr-In-Charge

S&F Contactor type- MCX13 of AC3 80 Amp, 415V, 50 Hz complete as in repairs all as specified and directed by Eng-In-Charge

S&F Single phasing preventer, Make : EllicoType-ESP-2 , 415 Volt, 50 Hz or equivalentcomplete as in repairs all as specified and directed by Eng-In-Charge

S&F Electronic timer Make : Ellico Type-S/D-C-100 , 230/415 Volt, or equivalent complete as in repairs all as specified and directed by Eng-In-Charge

Repairing / Servicing of complete all electric supply panels for AHU Rooms by cleaning all MCCB Connections and Bus bars with anti rust spray, replacing of nuts & bolts, washers, with suitable lugs of burnt/rust contacts & fitting of screws & rewiring with suitable guage copper conductor/flexible wires, all as required as per ground condition, with tightening of all loose connections, with testing complete on load all as directed by Engr-in-charge

S&F Pressure gauges 100 mm dia for condensor water lines and chiller water lines , complete as in repairs all as specified and directed by Eng-In-Charge

S&F AC Scroll type compressor suitable for 72 Ton AC plant, complete as in repairs all as specified and directed by Eng-In-Charge

Manning and & Operation of Centralised Air Conditioning plant (72x2=144 TR) at Auditorium at HQ SWAC, AF Stn Chiloda with appropriate categories of industrial personnel (Operator) /Ref Mech(Skilled) operator in two shifts of 08 Hours each per day including operation of DG Sets of Cap 380 KVA and 125 KVA installed at AC Plant complete all as specified and directed by Engr-in-charge,consisting undermentioned and contractor isresponsibilities to maintain:- (a) Water Chiling Maching 72 TR - 02 Nos (02 Nos Working) (b) Pumps for chilled water, Condenser water, Primary Pumps, Secondary Pumps, Draining out of Plant complete and all as specified. (c) Cooling tower of Capacity 140 TR - 02 No

(d) AHUs of Various capacity -03 Nos (e) All types/sizes of Pipes and valves in Plant Room and AHU Rooms (f) various sizes of Ducting (g) All LT Panels/AHU Panels (h) All types/sizes of cables & Earthings (k) Internal Fixtures at AC Plant Room (l) Running record to AC plant with log sheets. (m) Sundry works such as temperature maintain inside Bldg/each room , repair to minor leakage seepage if any all as directed by Engr-in-Charge NOTES a) The work shall be carried out in two shifts for Item No.19 as per description of Sch 'A'. Contractor shall employ the man power in such a way that each worker shall get weekly off as per prevailing Labour Act / Law. The cost of additional worker (reliever) required to adhere the above said provision shall be deemed to be included in the quoted rates. b) Qualification of Operator /Ref Mech shall be Minimum ITI, Diploma holder in Mechanical with minimum 3 Years experience in particular field (Air Conditioning) operating of the above mentioned equipments. c) The entire installation including plant, machinery along with building & surrounding premises shall be kept neat & clean, quoted rate shall be deemed to include the same. d) Contractor shall also provide T&P to carry out the maintenance work in machinery / equipment. e) Contractor shall also provide Uniform & Shoes to all operator persons who are employed under this contract.

f) Contractor special attention is invited that the Accepting officer reserves the right to terminate the contract or part thereof without any prior notice. No compensation shall be made to the contractor for termination of contract or part thereof. g) It is the responsibility of contractor to keep the Installation in neat and clean position and also scrubs, grasses in the premises area should be cut regularly & any expenditure on this account shall be included in quoted rates by the contractor. The AHU Cleaning and filter washing shall be the responsibility of operators employed under item No.19 of this schedule h) The Contractor should be responsible for providing the items to the operators such as cotton waste, grease, oil, insulation tape, temperature record instruments for AC, tool kit Ref Mech , Hand gloves, discharge Rod upto 11000 Volts, pipe wrench up to 300mm, taflon tape, Earth tester, multimeter, tounge tester respectively, first aid kit with standard kit , proper sitting arrangement to operator at installation, torch light with cell , cleaning material etc all as directed by Engr-in-Charge Note:-The contractor shall be responsible for attending / rectifying complaints within 24 hrs from the time of reporting, otherwise an amount of ₹ 10000.00 per day shall be recovered from the contractor on account of non attending / rectifying complaints.

Dighard Electricals

LAXMI CORPORATION

MK Aircon Systems Pvt. Ltd.