REPAIR / MAINTENANCE TO VARIOUS CAPACITY CENTRAL TYPE AC PLANTS AND CONNECTED MOTORS, PUMPS AND MISC WORKS AT INS KALINGA, KARNA AND NAD BHEEMUNIPATNAM

Amount

M&L disconnecting electical / mechanical connections and de-coupling motor from pump / compressor and including taking down the defective Induction motor of any make / model transported to work shop for dismantling motor, remove burnt out winding from stator and rewinding the stator with same gauge super enamelled copper conductor with necessary insulation materials, varnishing, heating, re-assembling motor, replacement of both end bearings, after complete the job motor transported to site and reinstalled at its original position, allignment with pump / compressor with electrical connections for the following capacity of motors complete all as specified and directed :-

Motor up to 5 HP

Motor upto 10 HP

Motor upto 15 HP

Motor upto 20 HP

Motor upto 30 HP

M&L repair, reconditioning of monoblock pump / centrifugal pump and including pump will be degutted from foundation and including transport to work shop for dismantling motor, replacement of mechanical seals, gland packing, o-rings and other necessary consumbles, over hauling of the pump and boxed back test bed trails at work shop with 1.5 times the working pressure, transportation of pump back to site, reinstalled at its original position,alignment of pump / motor with electrical connections for the following capacities complete all as specified and directed :-

Pump up to 5 HP

Pump upto 10 HP

Pump upto 15 HP

Pump upto 20 HP

Supply and replacement of coupling for condenser / chiller pump set including EPDM / rubber spider and alignment after fixing the coupling complete all as specified and directed.

Supply and replacement of tyre coupling for condenser / chiller pump set and alignment after fixing the coupling complete all as specified and directed.

Supply and replacement of single phase protection relay 415 V, 3 phase complete all as specified and directed.

M&L taking down the chocked liquid line drier core by pumping down the gas to the condenser, isolation of valves and including taking out the defective core assembly, cleaning the core shell, flushing and pressure testing with nitrogen, replacement of activated core with necessary gasket, fixing the cover complete all as specified and directed.

M&L vaccuming the complete system of various capacity of central type AC plants with vaccum pump as per the standard practice and including charging the refrigerant R-22 gas, checking of leaks and testing the system complete all as specified and directed.

All as per Sl. Item No. 7 above but refrigerant HFC 134 a gas

All as per Sl. Item No. 7 above but refrigerant HFC R-407 a gas

Supply and filling compressor oil complete all as specified and directed.

Supply and replacement of solenoid valve coil, single phase, AC 230 V, 50 Hz complete all as specified and directed.

Supply and replacement of HP & LP combined switch and including connecting the circuit wiring, pressure line connections and setting of the cut in & cut out pressure limits and testing complete all as specified and directed.

Supply and replacement of low pressure cutout switch and including connecting up the electrical & pressure line connections, setting the cut in & cut out pressure limits and testing the cutout switch for AC plant compressor complete all as specified and directed.

Supply and replacement of oil pressure cut out switch and including connecting up the electrical & pressure line connection and setting the cut in & cut out pressure limits and testing the cutout switch for AC plant compressor complete all as specified and directed.

Supply and replacement of timer HSDT2 CON-230, 0 to 30 Sec and including connecting the wiring & testing complete all as specified and directed.

Supply and replacement of shaft seal assembly by disconnecting the drive set of direct / belt driven type, isolation & pumping down the gas to the condenser, opening the shaft seal, cleaning the shaft seal port, checking the leaks, fixing the drive set, and testing the compressor of 05040 / 05046 Voltas 30TR complete all as specified and directed.

Supply and replacement of power contactor 3 pole, 3TF 46, capacity 45 Amps 415V and including burnt out copper wire, lugs and testing complete all as specified and directed.

S&F MPD power supplier of capacity 5-30 Amps auxilary supply,15 V, AC 230V, 50HZ AC supply complete all as specified and directed.

Supply and replacement of digital ammeter, 3 phase, 5 Amps, class 1, AC supply and including CTS complete all as specified and directed.

Supply and replacement of digital voltmeter, 3 phase, 0-500 V, AC supply complete all as specified and directed.

M&L complete checking and including overhauling and modification of electrical starter panel, cleaned and tightened the loose connection, all the relays, fuse, connectors, lugs, other related equipment in the system, damaged parts will be replaced, wiring of the panel carried out with suitable copper control wiring, all other protection will be checked and will make them operational, replacement of burnt out lugs, busbar, cleaning of panel, ensure of panel door closing, painting the panel with synthetic enamel paint complete all as specified and directed. Note : i) The rate quoted shall be deemed to be include for lugs, busbar modification, T&P, MS nuts, bolts, panel painting , ii) Spare parts shall be measured and paid seperately under relevant item.

Supply only ACB 630 Amps FP 50 KA 415 Volt of existing model and make.

Supply only MCCB 500 Amps FP 50 KA 415 Volt of existing model and make.

Supply only MCCB 350 Amps FP 36 KA 415 Volt of existing model and make.

Supply only MCCB 250 Amps FP 36 KA 415 Volt of existing model and make .

Supply only contactor 3 pole MNX 32 of existing model and make.

Supply only power contactor 3 pole MNX 18 of existing model and make.

Supply only power contactor 3 pole MNX 9 of existing model and make.

Supply only auxiallry contactor MNX-A1 of existing model and make.

Supply only auxiallry contactor MNX-A2 of existing model and make.

Supply only contactor TC1 3 pole capacity of 25 amps of existing model and make.

Supply only ammeter 0-500 Amp, 3 phase and including suitable CTS

Supply only voltmeter 0-500V, 3 phase of of existing make.

Supply only MCB 63 amps 3 pole breaking capacity 10KA

Supply and replacement of current transformer secondary current 5 amps and primary current 60 amps complete all as specified and directed.

Supply and replacement of indicator lamp assembly LED type 230 / 440 V complete all as specified and directed.

Supply and replacement of 2 pole power contract MNX 12 including add on block as per existing complete all as specified and directed.

Supply and replacement of power contactor assembly 32 Amps as per existing complete all as specified and directed.

Supply and replacement of DOL starter suitable for 5 HP to 10 HP motor and including over load relay, single phasing preventer under volt release etc, as per existing complete all as specified and directed.

Supply and replacement of auxillary power contactor assembly of 415V, 50 Hz of existing make and model and including testing on completion complete all as specified and directed.

M&L carrying out the complete leak rectification of the direct expansion system of following capacity of central type AC plants consisting of compressors, condensers, liquid & suction and discharge lines, evaporator coil / chiller and pressure control valves & lines and gauge board with Nitrogen gas, locating the leaks and rectifying the leaks and flushing the complete system and pressure testing & holding the pressure for 24 Hours complete all as specified and directed :-

30 TR capacity Chiller system

25 TR capacity Chiller system

Supply and replacement of induction motor bearing of existing make / model and including dismantling motor of the following sizes complete all as specified and directed:-

Ball bearing 6204

Ball bearing 6205

Ball bearing 6206

Ball bearing 6207

Ball bearing 6208

Ball bearing 6209

Ball bearing 6210

Ball bearing 6211

Ball bearing 6312

Ball bearing 6313

Supply and replacement of pillow block bearing size upto shaft dia 63.5 and including necessary machining, alignment of shaft, dynamic balancing of shaft with blowers complete all as specified and directed.

Supply and replacement of 80 mm dia CI butterfly valve PN 1.0, pneumatic double acting actuator with both sides flanges and gaskets complete all as specified and directed.

All as per Sl. Item No. 44 above but 100 mm dia

Supply and replacement of 150 mm dia MS Pipe (heavy grade) with necessary fittings like elbow, flanges, bolts, nut and valve strainers and including necessary supports as in water pipe lines and including applying two coats of synthetic enamel paint over a coat of primer complete all as specified and directed.

M&L complete rectification, testing and including overhauling of hot water generator of Make: Rapid cool, replacement of unserviceable parts i.e. digital step controller display, relay, heater assembly, contactors, checking of serviceable and operational condition of hot water generator as per manufacturers instructions complete all as specified and directed. Note :- (i) Supply only spare parts shall be measured and paid seperately under respective item.

Supply only digital step controller display complete set for hot water genertaor 80 KW (Model: RC-80, Make: Rapid cool).

Supply only controle module card with relay complete set for hot water genertaor 30 KW (Model: RC-30, Make: Rapid cool).

Supply only immersion type water heater assembly of capacity 25 KW suitable for Emrald make hot water generator.

Supply only immersion type water heater assembly of capacity 15 KW suitable for Emrald make hot water generator.

Supply only thermostat (30 to 110) ANCO DX-110 suitable for Rapid cool Make hot water generator.

Supply only limit switch suitable for Rapid cool Make hot water generator.

Supply only water thermostat suitable for Rapid cool Make hot water generator.

Supply only air release valve suitable for Rapid cool Make hot water generator.

Supply only rubber gasket suitable for Rapid cool Make hot water generator.

Supply and replacement of MCCB 100 Amps FP 30 KA 415 Volt complete all as specified and directed.

Supply and replacement of MCCB 125 Amps FP 30 KA 415 Volt complete all as specified and directed.

Supply and replacment of MCB 6 Amps 30 KA 415 Volt complete all as specified and directed.

Supply and replacement of power contactor of model MNX25, 3 phase 415 Volt complete all as specified and directed.

Supply and replacement of AHU MERV-4 filters of different sizes after proper fabrication of the filters identical with the existing installed sizes of the following complete all as specified and directed:- (i) Construction- Pleated (ii) MOC for frame- Aluminum (iii) Media- MERV 13 Synthetic with thermal bonded support layer (iv) Washable media (v) Bonding with Epoxy Adhesive Washable Media (vi) I.P.D- 4 mm of WC (vii) F.P.D- 12 mm of WC (viii) Filtration Efficiency: 3 – 10 Micron: More than 90%

M&L frame work for ladders of make up water tanks / colling tower conforming to Fe 410-0 or Fe 310-0 of MS flat angle iron supports fabication, erection as per existing and including applying two coats of synthetic enamel paint over a coat of anticorrosive primer, dismantling exiisting ladder, necessary cutting welding , and grouting upto 10 m height building complete all as specified and directed.

Supply and replacment of temperature gauge (0-100°C) cylindrical type complete all as specified and directed.

Supply and replacment of pressure gauge suitable for 0-15 kg complete all as specified and directed.

Dismantling of old damaged / corroded part of the fondation of motor and pumps and including renewal of foundation with MS support channel, hard standing as per existing, painted with black bituminous paint to all exposed surfaces. proper alignment of motor and pump complete all as specified and directed.

All as per Sl. Item No. 56 above but foundation of compressor

Supply and lay copper cable PVC insulated sheathed 1100 volts grade multi core copper conductor round 3 core 10 Sq.mm and including taking down complete all as specified and directed.

All as per Sl. Item No. 58 above but 3 core 6 Sqmm.

Supply and replacement of GI slotted cable tray with necessary accessories i.e. fastaners / supports for the covering of cable tray complete all as specified and directed.

2'' x 6' 'x 2'' size.

2'' x 12' 'x 2'' size .

M&L taking down the defective condenser fan motor of weather proof type, 915 RPM, 3 phase, 415 V, 50 HZ, capacity 2 KW from the chiller plant and including transporting to work shop, dismantling, taking out the burned winding coil, cleaning the stator with CTC / petrol, removal all carbon, rewinding the stator with super enamelled copper wire of existing guage and connected meterial, class F insulation with IP 55 degree of protection, replacing of both end bearing, corroded bolts, nuts, brackets, rubber mounting bushes etc and reassembling, transporting back to site, fixing in position and testing the motor complete all asspecified and directed.

M&L carrying out the chemical cleaning / servicing of the air cooled condensers & cooling coils by applying the non-aciditic scale removing agent to the fins area of the cooling coil, copper tubes, remove the complete scale deposit across the coil, flushing through and complete blowing out the dirt, cleaning the fan impellers, filter section, fan section, and cleaning filters, tightening of all bolts & nuts, renew the rusted bolts & nuts checking the alignment of the drive set and testing the air cooled condenser of AC Plant up to 120 TR complete all as specified and directed.

suresh electricals

SRIVALLI ENGINEERS

SWATHI CONSTRUCTIONS