COMPREHENSIVE MAINTENANCE AND SERVICING OF 3 X180 TR AC PLANT ALONG WITH CEILING SUSPENDED AHU AT CERTAIN UNIT AND COMPREHENSIVE REPAIRS TO CENTRAL AC PLANT, PACKAGE AC PLANT, VRF AC PLANTS AT AIR FORCE STATION JAMNAGAR

Amount

M&L for descaling of complete copper condenser pipe of central AC Plant Air condenser unit, 180 TR ( Twin Circuit) Make : Voltas. circulating suitable descaling compound / solution into the tube with pump, and running the pump continuously till all the scale from tube are removed including removing side covers of condenser and cleaning the copper tubes by means of nylon brushes till the complete scaling is removed and refixing of covers including replacement of rubber gasket and refixing pipe connection etc. all as specified and directed to complete satisfaction of Engineer-in-charge. Note :- The unit rate quoted shall be deemed to include for carrying out descaling work teo times during contract period & will be measured two times only. The time interval between both descaling will be intimated by Engineer -in-charge as per requirement .

Comprehensive / Preventive maintenance of AHU shall be carried out as per manufacturer standard check list and detailed as under all as directed by Engineer-in-Charge. (a) Testing / Checking & servicing of blower fan motor and rectification of minor defect if any. (b) Testing / Checking of blower fan blade for proper functioning. (c) Cleaning of cooling coil of AHU unit with pressurised water and then testing/ checking of Cooling coil for leakage and rectification of leakage by brazing including. (d) Testing / Checking of all electrical connection and control wiring tighting of electrical connection and rectification of minor defect if any complete. (e) Testing / Checking and Cleaning the moisture drain pipe. (f) Cleaning of entire AHU unit for removing all dirt dust, grease etc Note :- (i) The unit rate quoted shall be deemed to include for carrying out servicing work teo times during contract period will be measured two times only. The time interval between both servicing will be intimated by Engineer -in-charge as per requirement

AHU unit 25 TR, 8000 CFM capacity Make -Zeco Aircon Ltd

AHU unit 15 TR, 5000 CFM capacity, Make -Zeco Aircon Ltd

AHU unit 30 TR, 12000 CFM capacity Make -Zeco Aircon Ltd

Comprehensive / Preventive maintenance of CSU (ceiling Suspended unit) of capacity 3 TR, 1200 CFM shall be carried out as per manufacturer standard check list and all as directed by Engineer-in-Charge. (a) Testing / Checking & servicing of blower fan motor and rectification of minor defect if any. (b) Testing / Checking of blower fan blade for proper functioning. (c) Cleaning of cooling coil of CSU unit with pressurised water and then testing/ checking of Cooling coil for leakage and rectification of leakage by brazing including. (d) Testing / Checking of all electrical connection and control wiring tighting of electrical connection and rectification of minor defect if any complete. (e) Cleaning of water tank inside the CSU (f) Testing / Checking & servicing of pump and rectification of minor defect if any. (g) Testing / Checking leakage from CSU body and rectification of leakage if any. (h) Testing / Checking and Cleaning the moisture drain pipe. (j) Cleaning of entire CHU unit for removing all dirt dust, grease etc Note :- The unit rate quoted shall be deemed to include for carrying out servicing work teo times during contract period will be measured two times only. The time interval between both servicing will be intimated by Engineer -in-charge as per requirement

Material & labour for charging of refrigerant R-134A gas to Air cooled central AC plant after flushing the complete system, vacuum testing up to 24 hours and the repairing the leaking tube / lines by brazing, including charging the unit with appropriate qty of gas as per manufacture's instruction complete all as directed by Engineer-In-Charge.

Supply, erectioning, testing and commissioning in repair of pressure sand media filter of capacity 3 cum/hr complete all as specified and directed by Engr-in-charge.

Supply, erectioning, testing and commissioning in repair of Activated Carbon filter of capacity 3 cum/hr complete all as specified and directed by Engr-in-charge.

Supply, erectioning, testing and commissioning in repair of Water softener filter (Cation Exchange) with all necessary equipment of capacity 3 cum/hr complete all as specified and directed by Engr-in-charge.

Supply, erectioning, testing and commissioning in repair of polypropylene head chlorine dosing pump having 1 Litre/hr and maximum injection pressure of 5.5 kg/Sq.cm complete all as specified and directed by Engr-in-charge.

Supply, erectioning, testing and commissioning in repair of 40x40 RO membrane of capacity 1 Micron, Max operating pressure at 300 PSI complete all as specified and directed by Engr-in-charge. Make : PENTAIR, Model No 40L30N

Supply, erectioning, testing and commissioning of multi plot valve mounted at polyglass pressure vessel to control the direction of flow complete all as specified and directed by Engr-in-charge.

M&L for descaling of complete copper condenser pipe of central / package type AC plants of following capacities by circulating suitable descaling compound / solution into the tube with pump, and running the pump continuously till all the scale from tube are removed including removing side covers of condenser and cleaning the copper tubes by means of nylon brushes till the complete scaling is removed and refixing of covers including replacement of rubber gasket and refixing pipe connection etc. all as specified and directed to complete satisfaction of Engineer-in-charge. Note :- contrator will carried out descaling work two time during contract period and shall be measured two times, the time interval between both descaling will intimated by Engineer -in-charge as per requirement .

(a) Water condenser, of 30 TR Central AC plant of Make Voltas

Comprehensive / Preventive maintenance of Package Air conditioning of fallowing capacities, maintenece shall be carried out as per manufacturer standard check list and detailed as under all as directed by Engineer-in-Charge. (a) Cleaning the evaporator coil of indoor unit with pressureized water then apply one coat of descaling solution and clean with nylon brush and then testing/ checking of evaporator coil for leakage and rectification of leakage by brazing including.. (b) Cleaning of condensing coil of outdoor unit with pressurised water and then testing/ checking of Cooling coil for leakage and rectification of leakage by brazing including. (c) Testing / Checking and Cleaning of Air filter. (d) Testing / Checking of compressor for its proper functioning and rectification of minor defect if any. (e) Testing / Checking & servicing of blower fan motor and rectification of minor defect if any. (f) Testing / Checking & servicing of condenser fan motor and rectification of minor defect if any. (g) Testing / Checking of control switch such as pressure cut outs, refrigerent flow switch, temprature sensore for proper functioning. (h) Testing / Checking of refrigerant pipe for leakage and Rectification of leakage by brazing including cleaning of refrigerant pipe. (j) Testing / Checking of all electrical connection and control wiring tighting of electrical connection and rectification of minor defect if any complete.

NOTE :- (i) Comprehensive / Preventive maintenance including servicing of Package AC unit shall be carried out two times during contract period, and shall be measured two times, Contractor shall also be responsible to rectify any defect during break down without any extra cost during contract period. (ii) Charging of gas, if required, shall be measured and paid for separately under appropriate item. However, vacuum and pressure leakage testing with nitrogen (N2), if any required, is deemed to be included under the unit rate quoted by the contractor for this item. (iii) After completion of Comprehensive / Preventive maintenance including servicing of Precision type Package AC unit shall be tested by the contractor all as directed by the Engineer-in-Charge.

Package Air conditioning unit of Capacity 8.75 TR (Make: Voltas, Model: (DCUSC875DG)

Package Air conditioning unit of Capacity 8.5 TR(Make: GEA, Model: OCRA32-b)

Package Air conditioning unit of Capacity 10 TR (Make: Emerson, Model: PEX-135 EC I-COM) of Capacity 10 TR

Package Air conditioning unit of Capacity 11 TR (Make: Bluestar, Model: DPA1321R1-1)

Comprehensive / Preventive maintenance of AHU shall be carried out as per manufacturer standard check list and detailed as under all as directed by Engineer-in-Charge. (a) Testing / Checking & servicing of blower fan motor and rectification of minor defect if any. (b) Testing / Checking of blower fan blade for proper functioning. (c) Cleaning of cooling coil of AHU unit with pressurised water and then testing/ checking of Cooling coil for leakage and rectification of leakage by brazing including. (d) Testing / Checking of all electrical connection and control wiring tighting of electrical connection and rectification of minor defect if any complete. (e) Testing / Checking and Cleaning the moisture drain pipe. (f) Cleaning of entire AHU unit for removing all dirt dust, grease etc Note :- (i) The unit rate quoted shall be deemed to include for carrying out servicing work two times during contract period and shall be measured two times. The time interval between both servicing will be intimated by Engineer -in-charge as per requirement

AHU unit 60 TR, 27700 CFM capacity, Make -Zeco Aircon Ltd

AHU unit 17.5 TR, 8500 CFM capacity, Make -Citizen Industries Ltd

AHU unit 8.75 TR, 4000 CFM capacity Make -Citizen Industries Ltd

Supply & fix in repair 80 mm size butterfly valve with cast iron body, seat of black nitride rubber, nylon coated S.G. Iron disc, PTFE coated SS (AISI 410) shaft, companion flanges, nuts, bolts, gaskets etc, confirming to BS:5155 MSS SP.67 & API. 6098 and shall be designed to fit without gaskets between mating and seal in both direction. The valves shall be of integral moulded design. Make:- L&T, Leader, Zoloto, Upadhay

Supply & fix in repair 100 mm size butterfly valve with cast iron body, seat of black nitride rubber, nylon coated S.G. Iron disc, PTFE coated SS (AISI 410) shaft, companion flanges, nuts, bolts, gaskets etc, confirming to BS:5155 MSS SP.67 & API. 6098 and shall be designed to fit without gaskets between mating and seal in both direction. The valves shall be of integral moulded design. Make:- L&T, Leader, Zoloto, Upadhay

Supply installing and testing cast iron double flanged type non return valve/ check valve class - 1 conforming to IS 5312 of size 100 mm dia including joints and jointing material i.e. nuts washers, rubber insertion sheet complete all as specified and directed. Make:- L&T, Leader, Zoloto, Upadhay

Supply and fix in repair 'V' belts of size A-46/64 of blower motor of AC plant any type all as directed by the Engineer-in-Charge. Make : Fenner / Dunlop / JK.

Supply and fix in repair 'V' belts of size B-72/75 of AHU motor of AC plant any type all as directed by the Engineer-in-Charge. Make : Fenner / Dunlop / JK.

Supply and fix in repair 'V' belts of size B-100/112 of AHU motor of AC plant any type all as directed by the Engineer-in-Charge. Make : Fenner / Dunlop / JK.

Supply and fixing in repair Oil/HP/LP pressure sensor Probe suitable for reciprocating Chiller unit of 30 TR central AC plant all as directed by the Engineer-in-Charge. Make:- Voltas Model : 09066 or equivalent make approved by The GE.

Supply and fix in repair water differential pressure cut out switch MP-55 for compressor of central type AC plant of any capacity all as directed by the Engineer-in-Charge. Make : INDFOSS / DANFOSS/ HONEYWELL.

S&F in repair 2 pole front mounted add on Auxiliary contact block type MNX -A2 for power contactor, 1 NO & 1 NC contact including connecting complete, all as specified & directed by Engg-in-charge. Make:- SIEMENS / L&T / BHARATIA CUTTLER HAMMER / C&S

S&F in repair 4 pole front mounted add on Auxiliary contact block type MNX -A1 for power contactor, 10 Amp capacity, 415 V including connecting complete all as specified & directed by Engg-in-charge. Make:- SIEMENS / L&T / BHARATIA CUTTLER HAMMER / C&S

S&F in repair 3 pole power contactor 25 A, 415 V, coil voltage 230 V including connecting complete all as specified & directed by Engg-in-charge. Make:- L&T type MNX 25 or equivalent of make SIEMENS / / BHARATIA CUTTLER HAMMER / C&S

S&F in repair 4 pole power contactor 18 A, 415 V, coil voltage 230 V including connecting complete all as specified & directed by Engg-in-charge. Make:- L&T type MCX 01 or equivalent of make SIEMENS / / BHARATIA CUTTLER HAMMER / C&S

S&F in repair 3 pole power contactor 12 A, 415 V, coil voltage 230 V including connecting complete all as specified & directed by Engg-in-charge. Make:- L&T type MNX 12 or equivalent of make SIEMENS / / BHARATIA CUTTLER HAMMER / C&S

S&F in repair 3 pole power contactor 32 A, 415 V, coil voltage 230 V including connecting complete. Make:- L&T type MNX 32 or equivalent of make SIEMENS / / BHARATIA CUTTLER HAMMER / C&S

S&F in repair 3 pole power contactor 45 A, 415 V, coil voltage 230 V with including connecting complete. Make SIEMENS type 3TF4602-0A or equivalent of make L&T / BHARATIA CUTTLER HAMMER / C&S

S&F in repair 1 pole front mounted add on Auxiliary contact block for power contactor, 1 NO or 1 NC contact including connecting complete. Make SIEMENS type 3TX4010-2A or equivalent of make L&T / BHARATIA CUTTLER HAMMER / C&S

S&F in repair compressor star delta timer starting time range 3-60 sec rated voltage :- 200-240V, 50HZ including connecting complete. Make SIEMENS type 3RP15761N#208K or equivalent of make L&T / BHARATIA CUTTLER HAMMER / C&S

Supply and fix in repair Single phase preventer relay for precision Air condition unit Make :- Minilec , Model No :- S2 VMR 6 or equivalent of make L&T / BHARATIA CUTTLER HAMMER / C&S

S&F in repair compressor over load protection type 3RP15761NP30 , starting time range 3-60 sec rated voltage :- 200-240V, 50HZ including connecting complete. Make:- SIEMENS / L&T / BHARATIA CUTTLER HAMMER / C&S

S&F in repair Blower timer type Micron Electronic Timer , including connecting complete. Make:- SIEMENS - Cat No :- 20SDTO or L&T / BHARATIA CUTTLER HAMMER / C&S

S&F in repair Blower over load protection type MN-2 SS01212 , rated voltage :- 200-500V, 50HZ, 2A ,AC-15, Maximum fuse 6A including connecting complete. Make:- SIEMENS / L&T / BHARATIA CUTTLER HAMMER / C&S

M&L for taking out blower fan motor of capacity 7.5 HP from package type AC plant of capacity 17.5 TR, opening the motor, cutting & removing old and burnt winding wire, rewinding the motor with new super enameled copper winding wire of suitable size including insulating materials, varnishing, drying, replacement of both driven end non driven end bearings and base plate, reassembling, refixing in same position & connecting including testing and commissioning complete all as specified & directed

M&L for taking out blower fan motor of capacity 25 HP from package type AC plant of capacity 60 TR, opening the motor, cutting & removing old and burnt winding wire, rewinding the motor with new super enameled copper winding wire of suitable size including insulating materials, varnishing, drying, replacement of both driven end non driven end bearings and base plate, reassembling, refixing in same position & connecting including testing and commissioning complete all as specified & directed

M&L for taking out compressor Motor 30 KW/40 HP cap (Voltas central AC plant of capacity 30 TR), Dismantling the motor with disconnecting the same from the compressor and remove rubber coupling and its connected accessories and transporting to reputed work shop for rewinding . opening the motor, cutting & removing old and burnt winding wire, rewinding the motor with new super enameled copper winding of suitable size including insulating materials, varnishing, drying, replacement of both driven end non driven end bearings and base plate, reassembling, refixing in same position & connecting including testing and commissioning complete all as specified & directed

Supply and fix in repair of 100 mm dial type Pressure Gauge with appropriate range & SS valves and SS tubing all as directed by Engr-in-charge. Make:- GURU / EMRALD / D S ENGG / GLUCK

Supply and fix in repair of set of individual confirm 100 mm dial type Temp Gauge with appropriate range & SS valves and SS tubing all as directed by Engr-in-charge. Make:- GURU / EMRALD / D S ENGG / GLUCK

Supply and fixing in repair Expansion valve for package type AC plant (of Make : Bluestar Model No : DPA1321) capacity 11 TR Make as per manufacturer recommadation after written approval by The GE

Supply and fix in repair of Supply / Return air Diffusers / Grilles of extruded Aluminium sections duly powder coated with black volume control Damper all as directed by Engr-in-charge. Make: DYNACRAFT / COSMOS / AIR MASTER

Supply and fix in repair of automatic Fire damper of Fusible Link type as required for operation complete all as specified & directed by Eng-in-charge. ( Note: The fire dampers shall be spring activated on melting of fusible link having melting point of 67 to 68 deg.c. Fire damper shall be tested as per ULL- 555 and certified by CBRI ). MAke: CARYAIRE / TCS / TRISTAR / GREENHECK

Supply and erection in repair of 25mm thick nitrile duct insulation with Aluminium foil. The thermal insulation shall be 25mm thick non-fiberous, fire retardant, closed cell, conforms to class 'O' for fire propagation and class I for surface spread of flame and factory laminated aluminium foil complete all as specified and as directed.

Supply and fix in repair of 50mm thick TF Quality thermocole insulation for AHU Room fixed with 50 x 50 x 1 mm thick GI Channels frame work and further covered with 28 H perforated Aluminium sheet all as specified and as directed.

Supply, installation, testing and commissioning in repair of DUCT (square/ rectangular) fabricated with galvanised steel sheet (G.S.S.) 0.63 mm thick, 24 Gauge (GSG) 64 sqm having zinc coating of 140 gm/sq.m total on both sides complete with gaskets, elbows, splitters, vanes, supports etc. as per IS: 655/1963 (Revised upto date) and including with required scafolding work to install the ducts all as directed by Engr-in-charge Make : JINDAL / SAIL / ISPAT

All as per item No 46.00 above but duct fabricated with 0.80 mm thick sheet, 22 Gauge (GSG) 64 sqm.

Supply & fix in repair Expansion valve VVE type along with flanges for VVE and element suitable for 30 TR water cooled chiller unit complete all as specified and directed by Engg -in-charge Make: Sporlan / INDFOSS / DANFOSS/ HONEYWELL.

Supply and fix in repair HP cutout for compressor of precision Air conditioning unit omplete all as specified and directed by Engg -in-charge Make Emersion Model : PEX 135 EC I-COM

Supply and fix in repair LP cutout for compressor of precision Air conditioning unit complete all as specified and directed by Engg -in-charge Make Emersion Model : PEX 135 EC I-COM

Supply and fix in repair Microvave filter for compressor of precision Air conditioning unit complete all as specified and directed by Engg -in-charge Make Emersion Model : PEX 135 EC I-COM

Supply and fix in repair Expansion Valve for compressor of precision Air conditioning unit complete all as specified and directed by Engg -in-charge Make Emersion Model : PEX 135 EC I-COM

Supply and fix in repair Air sensor for compressor of precision Air conditioning unit all as specified and directed by Engg -in-charge Make Emersion Model : PEX 135 EC I-COM

Supply and fix in repair Evaporator fan motar with blade for compressor of precision Air conditioning unit all as specified and directed by Engg -in-charge Make Emersion Model : PEX 135 EC I-COM

Supply and fix in repair Filter drier for compressor of precision Air conditioning unit all as specified and directed by Engg -in-charge Make Emersion Model : PEX 135 EC I-COM

Supply and fix in repair Infrared Humidifier of Precision type Package Air conditioning of capacity 10 TR. Make Emersion Model : PEX 135 EC I-COM

Supply and fix in repair Micro-processing Controller (I Com) of Precision type Package Air conditioning of capacity 10 TR unit all as specified and directed by Engg -in-charge Make: Emersion, Model : PEX 135 EC I-COM

Supply and fix in repair Condenser coil (Model: LS60) Assembly of Precision type package AC of capacity 10 TR all as specified and directed by Engg -in-charge Make: Emersion, Model : PEX 135 EC I-COM

Supply and toping up refrigerant gas R-22 to the central / package AC plant of any capacity system all as directed by the Engineer in charge.

Supply and toping up refrigerant gas R-410 A to the central / package AC plant of any capacity system all as directed by the Engineer in charge.

Supply and toping up refrigerant gas R-407 C to the central / package AC plant of any capacity system all as directed by the Engineer in charge.

Dismantling of existing corrosion proof PVC fill from the induced draft type cooling tower of fibre glass reinforced plastic (FRP) casting rectangular construction with minimum 900 LPM capacity complete with all accessories and supply and fix new corrosion proof PVC fill and inlet louvers, drift , eliminators hot water distribution chamber and nozzles etc all as specified and directed by engg in-charge Make :- Mihir / Delta / Paharpur Note:- (i) Cooling tower shall be suitable for the following technical data ;- Water Flow Rate : 900 LPM, Inlet / outlet / Wet bulb Temp : 36.4 / 32.2 / 280C (ii) The cooling tower accessories and material will be assembled and fitted in presence of company representative and to be tested as per company specifications (iii) Any spares required during maintenace like nuts, bolts, rivets , gaskets etc will be procured and rate will be included in quoted rate.

Supply & fix in repair Cooling tower fan motor complete with hub, blade and all accessories suitable for 60 TR capacity of AC plant, fixing in same position & including testing and commissioning complete, including taking down old fan motor and deposited in Store yard of AGE E&M complete all as specified & directed. (Make : Kirloskar Brother or equivalent make recommend by OEM & approved by the GE.)

Supply & Fix in repair Sprinkler with spray pipe suitable for 60 TR capacity cooling tower, including complete fitting and accessories all as specified and directed by Engg -in-charge

Dismantling of existing compete set of Out door condensting unit of AHU with connected accessories 8.75 TR capacity and Supply and fix new condensing unit contaning condenser fan with electrical motor , compressor , control unit for single phase prevension and phase reversal with charged refrigerant Gas R-22 complete all as specified and directed by Engg -in-charge. Make:- Voltas, Model No : DCUSC8.75 DG or equivalent make as per manufacturer recommendation.

Dismantling of existing compete set of Out door condensting unit of Package unit with connected accessories 11 TR capacity and Supply and fix new condensing unit contaning condenser fan with electrical motor, control unit for single phase prevension and phase reversal with charged refrigerant Gas R-22 complete all as specified and directed by Engg -in-charge. Make:- Blue star, Model No : DPA1321, or equivalent make as per manufacturer recommendation.

MK Aircon Systems Pvt. Ltd.

SURESH ELECTRICALS

M/s SK Traders