REPAIR AND MAINTENANCE OF CENTRAL AC PLANT AND PACKAGE AC AT AF STN SAMANA UNDER GE (AF) JAMNAGAR NO 1

Amount

M&L for descaling cleaning of complete makeup tank chilled water pipe, copper condenser/evaporator pipe ,cleaning air filter of central air cooled type AC plants of capacitiy 40x4 TR (Make- Bluestar) by circulating suitable descaling compound / solution into the tube/pipe with pump, and running the pump continuously till all the scale from tub/pipe 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 :- (i) The Contractor shall descalinated each AC Plant twice during contract period . (ii) Each descaling shall be counted as one job for the purpose of payment. (iii) The time interval between both descaling will be intimated by Engineer-in-charge as per requirement.

Comprehensive / Preventive maintenance of Package Air conditioning of capacitiy 11 TR, (Make- Bluestar) maintenence 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) The Contractor shall carry out Comprehensive / Preventive maintenance of each Package Air conditioning twice during contract period . (ii) Each Comprehensive / Preventive maintenance shall be counted as one job for the purpose of payment. (iii) The time interval between both servicing will be intimated by Engineer -in-charge as per requirement (iv) The complete report wrt. each Comprehensive / Preventive maintenance shall be submitted to Engineer -in-charge before payment. (v) The Contractor shall also be resposible to rectify any defect during break down without any cost during contract period. (vi) 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. (vii) 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.

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 functioningalong withchanging its bearing, oiling and greasing (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 Contractor shall descalinated each AC Plant twice during contract period . (ii) Each descaling shall be counted as one job for the purpose of payment. (iii) The time interval between both descaling will be intimated by Engineer-in-charge as per requirement.

AHU unit 30 TR, 12000 CFM capacity, Make - Blue star

AHU unit 08 TR, 3200 CFM capacity, Make - Blue star

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, complete all as specified & as directed.

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, complete all as specified & as directed.

Supply & fix in repair 50 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, complete all as specified & as directed.

Supply & fix in repair GI damper of size 450x 450mm, complete all as specified & as directed. Make:- Leader, Zoloto, Kirloskar, L&T or equivalent make approved by GE.

Supply and fix in repair 'V' belts of size A 849 LP/A32 of blower motor pakage11 TR of AC plant any type complete all as specified & as directed. Make : Fenner / continental/Dunlop / JK

Supply and fix in repair 'V' belts of size B-72/75 of AHU motor of AC plant complete all as specified & as directed. 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 scroll Chiller unit of 40 TR central AC plant complete all as specified & as directed. Make:- Bluestar or equivalent make approved by GE.

S&F in repair 2 pole front mounted add on Auxiliary contact block for power contactor, 1 NO & 1 NC contact including connecting complete all as specified & as directed. Make:- SIEMENS / L&T / ABB/ BCH / C&S / Legrand

S&F in repair 4 pole front mounted add on Auxiliary contact block for power contactor, 2 NO & 2 NC 415 V including connectingcomplete all as specified & as directed. Make:- SIEMENS / L&T / ABB/ BCH / C&S / Legrand

S&F in repair 3 pole power contactor 12A, 415 V, coil voltage 230 V including connecting complete all as specified & as directed.. Make:- CTX 22 legrand / SIEMENS / L&T / ABB/ BCH / C&S

S&F in repair 3 pole power contactor 9A, 415 V, coil voltage 230 V including connecting complete all as specified & as directed. Make:- CTX 22 legrand / SIEMENS / L&T / ABB/ BCH / C&S

S&F in repair 3 pole power contactor 50 A, 415 V, coil voltage 230 V including connectingcomplete all as specified & as directed. Make:- SIEMENS / L&T / ABB/ BCH / C&S / Legrand

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 all as specified & as directed. Make:- SIEMENS / L&T / ABB/ BCH / C&S / Legrand

S&F in repair compressor over load protection type current rating 16-22 Amps rated voltage 415V, 50HZ including connecting complete all as specified & as directed. Make:- SIEMENS / L&T / ABB/ BCH / C&S / Legrand

M&L for taking out blower fan motor of capacity 2.2 HP from package type AC plant of capacity 11 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,shaft replacement and balancing, reassembling, refixing in same position & connecting including testing and commissioning complete all as specified & as directed

M&L for taking out blower fan motor of capacity 2HP from AHU type capacity 8 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,shaft and base plate, reassembling, refixing in same position & connecting including testing and commissioning complete all as specified & as directed

M&L for taking out Chilled water pumps 7 HP 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,shaft and base plate, reassembling, refixing in same position & connecting with coupling shaft including testing and commissioning complete all as specified & as directed

M&L for taking out blower fan motor of capacity 10 HP from AHU type capacity 30 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,shaft and base plate, reassembling, refixing in same position & connecting including testing and commissioning complete all as specified & as 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 150 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 water cooled chiller AC plant (of Make : Bluestar ) capacity 40 TR (Make:- As per manufacturer recommadation after written approval by GE)

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 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 complete 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 complete all as specified and as directed. Make : JINDAL / SAIL / ISPAT

All as per item No 31.0 above but duct fabricated with 0.80 mm thick sheet, 22 Gauge (GSG) 64 sqm.

Supply and fix in repair of site fabricated MS channel/angle support structure/pipe rack for the piping, cassate units, FCUs and ducting work complete all as specified and as directed.

Supply and installation in repair of Acoustic insulation with using 18 mm thick open cell Nitrile Rubber to reduce the noise level in duct / plenum complete all as specified and as directed. Make: Armaflex/ Aeroflex/ Durkee

Supply and fix in repair of 25/32 Auto air purge valve/drain valve for chilled water pipingt complete all as specified and as directed.

Providing and fixing replacing in position of approved make flow switch complete with Aluminum control wiring at chiller outlet for measurement of water flow in AHU complete all as specified and as directed..

Supply, installation, testing & commissioning in replacement of PN 1.6 3-way modulating valves for AHU's chilled water coil application complete connection with motor actuator, thermostate, voltage transformer, flanges, nuts-bolts, gaskets duly insulated with 50mm thick TF Quality EPS & covered with 12 mm sand cement plaster and as specified and required. Make: Honeywell/ Johnson/ Stessa

Supply, installation, testing & commissioning of Mild Steel Chilled Water Piping of class 'C', cut to required length, and installed with welded joints, including all necessary fittings such as elbows, tees, bends, reducers, flanges, supports, air purge valves, drain valves etc,. duly insulated and as per specifications 0.50 mm thick TF Quality EPS pipe section insulation of 18 Kg / cu.m density & covered with GI chicken wire mesh and two coats 12 mm sand cement plaster as per specification. Make of pipe: Tata/ Jindal/ Surya prakash

25mm dia

32mm dia

40mm dia

50mm dia

65mm dia

80mm dia

100mm dia

125mm dia

Comprehensive / Preventive maintenance / servicing of chilled water 4 way cassette unit /FCU up to 4.0 ton capacity of any make, maintenance carried out by cleaning of cooling and condenser coil of indoor and outdoor units with descaling solution,testing / checking the serviceability of spares such as starting capacitor, running capacitor, fan motor, blower motor relays, thermostat, & wiring etc and servicing complete of indoor and outdoor units complete. Note:- (i) Spares such as, fan blade, blower motor relays, thermostat, & wiring etc if found defective will be measured & paid separately as supply & fix in repairs.

S&F repairing of drain pump for four way chilled water type cassatte units/FCU unit AC 1.5/2 ton capacity of Make LG / Carrier / Voltas / Blue Star along with necessary electrical connections including spare parts etc, complete all as specified and as directed.

S&F repairing of PCB suitable for four way chilled water type cassate units/FCU unit AC 1.5/2 ton capacity of Make LG / Carrier / Voltas / Blue Star along with necessary electrical connections including spare parts etc, complete all as specified and as directed.

S&F repairing of 2 way actuater valve suitable for four way chilled water type cassette units/FCU unit AC any capacity of Make LG / Carrier / Voltas / Blue Star along with necessary electrical connections including spare parts etc complete all as specified and as directed.

S&F repalacement of fan motor of FCU unit AC 1.5/2 ton capacity of Make Carrier along with necessary electrical connections including spare parts etc complete all as specified and as directed.

Supply and fix in repair fan blade suitable for outdoor unit of Air cooled package AC of 11 ton capcity Bue star, complete all as specified and as directed.

Supply and fix in repair condensing unit fan motor suitable for outdoor unit of Air cooled package AC of 11 ton capcity complete all as specified and as directed.

S&F replacement of fan motor of chilled water four way cassette unit AC 1.5/2/3/4 ton capacity of Make Carrier along with necessary electrical connections including spare parts etc, complete all as specified and as directed.

S&F replacement of fan blade of chilled water four way cassette unit AC 1.5/2/3/4 ton capacity of Make / Carrier along with necessary electrical connections including spare parts etc, complete all as specified and as directed.

Supply & fix in pre filter 10 micron of size 610x610x50mm AHU chiller unit complete all as specified and as directed. Make: THERMADYNE or equivalent make approved by GE.

Supply & fix in pre filter 10 micron of size 395x483x25mm AHU chiller unit complete all as specified and as directed. Make: THERMADYNE or equivalent make approved by GE.

Supply & fix in repair scroll compressor and element suitable for 40 TR Air cooled chiller unit complete all as specified and as directed. Make: DANFOSS model SZ185S4RC or equivalent make approved by GE.

Supply and fix in repair contactor 3 pole, 415V, 32 Amps for Package AC panel complete all as specified and as directed. Make:-CHNT NC 3201 or equivalent make approved by GE.

Supply and fix in repair contactor 3 pole, 415V,18 Amps for Package AC panel complete all as specified and as directed. Make:-CHNT NC 1801 or equivalent make approved by GE.

Supply and fix in repair suction line accumulator for blue star package AC of 11 ton capcity complete all as specified and as directed. Make:-Danfoss/Emerson or equivalent make approved by GE.

Supply and fix in repair HP cutout for compressor of 11 TR blue star pakage unit complete all as specified and as directed. Make:- Dafnoss or equivalent make approved by GE.

Supply and fix in repair LP cutout for compressor of 11 TR blue star pkage conditioning unit complete all as specified and as directed. Make:- Dafnoss or equivalent make approved by GE.

Supply and fix in repair Filter drier for 11 TR pakage AC make blue star Air conditioning unit complete all as specified and as directed. Make: Dafnoss or equivalent make approved by GE.

Supply and fix in repair thermostate for 11TR blue star Pakage AC unit complete all as specified and as directed.

Supply and fix in repair chiller micro computer control panel display panel with PCB card 40 TR unit complete all as specified and as directed. Make: Blue star model no XAC2YS 048AR2 or equivalent make approved by GE.

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

Material & labour checking leakge in Air cooled package air conditioner of capacity 11 TR after flushing the complete system, vacuum testing, Nitrogen filling and the repairing the leaking tube / lines by brazing, charging the unit as per manufacturer instructioncomplete all as specified and as directed.

Material & labour for checking leakage central air cooled chiller capacity 40 TR after flushing the complete system, vacuum testing, Nitrogen filling and the repairing the leaking tube / lines by brazing, charging the unit as per manufacturer instruction complete all as specified and as directed.

Chamunda Kruparefrigeration