REPAIR/MAINTENANCE OF CENTRAL TYPE AC PLANT AT SAA UNDER GE(S) TEZPUR

Amount

Supply & fixing in replacement strip heater 3.0 kw complete all as specified.

Supply & fixing in replacement strip heater 2.0 kw complete all as specified.

Supply & fixing in replacement strip heater 1.5 kw complete all as specified.

Supply and charging of gas R-134A complete all as specified and directed by Engineer-in-Charge

M&L in repair Rubber coupling of motor with complete accessories complete for Motors of rating 25 HP, 30 HP complete all as specified and directed.

S&F in repair Bearing of size 6308-ZZ complete all as specified and directed

S&F in repair Bearing of size 6311-ZZ complete all as specified and directed

Dismantling taking out the stator of electric motor 3 phase 415 volts, 50 C/S capacity 3HP and Rewinding the stator with super enameled copper winding wire of same size gauge as of existing copper winding wire and insulation material & labour including varnishing drying, baking reassembling after the complete winding has been carried out testing on load all as specified and directed by Engineer in Charge

Ditto as in Item No 8 above but for motor of capacity 5HP.

Ditto as in Item No 8 above but for motor of capacity 10HP.

Ditto as in Item No 8 above but for motor of capacity 15HP.

Ditto as in Item No 8 above but for motor of capacity 25HP

Ditto as in Item No 8 above but for motor of capacity 30HP

Dismantling pump set 30 HP (Make 'Kirloskar) and disconnecting water and electric connection removing shaft from impeller and remantling, grinding, polishing to shaft & suction cover and replacing , Gun metal bushes for shaft , Key for shaft , Graphite packing , water slinger , Gland bush, coupler etc fixing gland rope, greasing and fixing same shaft and impeller and reassembling properly testing all as specified by Engineer in Charge

Ditto as in Item No 14 Above but for 25 HP

Ditto as in Item No 14 Above but for 15 HP

Ditto as in Item No 14 Above but for 10 HP

Ditto as in Item No 14 Above but for 5 HP

Ditto as in Item No 14 Above but for 3 HP

S & F in repair water distribution sprinkler aluminium dia 150mm for fit for cooling tower complete all as specified

S & F in repair butterfly valve 200mm complete all as specified

S & F in repair butterfly valve 150mm complete all as specified

S & F in repair butterfly valve 100mm complete all as specified

S & F in repair butterfly valve 80mm complete all as specified

S&F in repair pressure gauge with syphon & valve complete all as specified and directed

S&F in repair thermometer with valve complete all as specified and directed

M&L for complete servicing of Air handling unit of capacity 5100 CFM to 9000 CFM floor mounted and hanging type (any type), by opening the outer sheets of (AHU) to access cooling coil, washing / cleaning of cooling coil externally with mild acid (or caustic soda hot water solution) followed by water jet including cleaning / washing of air filter and re-fixing, complete all as specified and directed by Engineer in charge.

Material and labour for Descaling the Cooling tower, by providing descalling solution , circulating the descaling solution with pump, brushing and clening the tubes, fins and wherever required drilling the stubborn sealing without damaging the PVC fillings,nuts & bolts, servicing of sprinklers etc of various capacity complete all as specified and directed. Reassembling the components after cleaning and descalling the cooling tower of central AC plant of 220 TR capacity complete as directed by Engineer in charge.

Material and labour for Descaling the Cooling tower, by providing descalling solution , circulating the descaling solution with pump brushing the tubes and wherever required drilling the stubborn sealing without damaging the PVC fillings,nuts & bolts, servicing sprinklers etc of various capacity complete all as specified and directed. Reassembling the components after cleaning and descalling the cooling tower of central AC plant of 100 TR capacity complete as directed by Engineer in charge.

Material and labour for Descaling the condenser water tubes, and supply circulating the descaling solution with pump brushing the tubes and wherever required drilling the stubborn sealing without damaging the tubes replacement of gaskets and unserviceable nuts & bolts. Assembling back complete for AC plant capacity, condenser capacity each 12.5 TR and as directed by by Engineer in charge.(Fixed 4 Nos of 12.5 capacity in 50TR plant) Each condensor of 12.5 capacity considered as one Job.

M&L for complete servicing of Air handling unit of 100 TR capacity central AC plant by opening the outer sheets of (AHU) to access cooling coil, washing / cleaning of cooling coil externally with mild acid (or caustic soda hot water solution) followed by water jet including cleaning / washing of air filter and re-fixing, complete all as specified and directed by Engineer in charge.

Material and labour for Descaling the condenser water tubes, by providing descalling solution , circulating the descaling solution with pump, brushing the tubes and wherever required drilling the stubborn sealing without damaging the tubes replacement of gaskets and unserviceable nuts & bolts. Reassembling the components after cleaning and descalling the condenser unit of central AC plant of 3 x 220 TR capacity complete as directed by Engineer in charge. Note : Cleaning of 3 Nos condenser unit of 220 TR each to be consider as one Job)

S & F in repair Communication module MT 3044 suitable for 220 TR chiller unit

S & F in repair AC/DC converter suitable for 220 TR chiller unit

S & F in repair condenser/chiller water temperature sensor as required at site.

S & F in repair discharge pressure sensor complete.

Supply and fix in replacement of single phase preventor 40 VAC asymmetry including connecting accessories complete all as specified.

Supply and fix in replacement of Thermal Relay LT3SE00M including connecting accessories complete all as specified and directed by Engineer in Charge.

Supply and fix in replacement of Intermediate relay 24 V DC complete all as specified.

Supply and fix in replacement of Intermediate relay 220 V AC complete all as specified.

Supply and fixing in replacement of microprocessor controller cord module for chilled water system suitable for 50 TR capacity

Labour for Quarterly Maintenance contract for Daikin Chiller Model No- PFS2451DBRY of 3 x 220 TR capacity by OEM with following conditions. 1. 01 no of quarterly maintenance services & All breakdown calls. 2. inspecting entire system for any unusual condition such as noise, vibration etc. 3. check operating presssure and temperatures to ensure proper operating conditions, Evapouaror and condenser, chilled water flow, pressure drop 3. checking the entire system. 4. The Items if required will be measured & paid separately under different Items . The contractor should produce MOU with Daikin Company. Notes:- (i) The contractor should produce MOU with Dakin Company. It is mandatory to upload the scanned copy of MOU (between OEM i,e M/S Daikin and contractor) along with all essential documents during quoting of bid and eligible for qualifying criteria (ii) During break down of plant, Technician from OEM have to attend the plant within 48 hrs, failing which penalty of Rs 200/- per hour per day be imposed on contractor.

Supply & fixing in repairs PVC filings 600 x 300 x 150 mm in cooling tower of 220 TR capacity complete all as specified and directed by Engineer-in-Charge.

S & F in repair display touch panel of 220 TR panel complete all as specified and directed by Engineer-in-Charge.

S & F in repair Pressure Transducer suitable for 220 TR unit as specified and directed

S & F in repair Pressure Switch (High press) suitable for 220 TR unit as specified and directed

S & F in repair Pressure Switch (Low press) suitable for 220 TR unit as specified and directed

S & F in repair Load/Unload coil 220-230 V suitable for 220 TR unit as specified and directed

S & F in repair of Solenoid Coil suitable for 220 TR unit as specified and directed

S & F in repair Oil Filter suitable for 220 TR unit as specified and directed

S & F in repair DP switch suitable for 220 TR unit as specified and directed

Material and labour in replacement High flow HEPA filter (high flow) with aluminium frame, box type a with flange of size 610x610x305mm, complete all as directed by Engineer-in-Charge.

Material and labour in replacement High flow HEPA (low flow ) filter with aluminium frame, box type a with flange of size 610x610x305mm, complete all as directed by Engineer-in-Charge.

Material and labour in replacement High flow HEPA filter (high flow) with aluminium frame, box type a with flange of size 610x305x305mm, complete all as directed by Engineer-in-Charge.

Material and labour in replacement High flow HEPA filter (low flow ) with aluminium frame, box type a with flange of size 610x305x305mm, complete all as directed by Engineer-in-Charge.

Material and labour in replacement PRE filter 10 micron A layer of now woven media is stitched along with layer of GI wire mesh on the downstream side to obtain required filtration and efficiency. The pleats are separated by spacers for maximum air flow of size 610x610x50mm complete all as specified and directed by Engineer in Charge..

Material and labour in replacement PRE filter 10 micron A layer of now woven media is stitched along with layer of GI wire mesh on the downstream side to obtain required filtration and efficiency. The pleats are separated by spacers for maximum air flow of size 610x305x50mm complete all as specified and directed by Engineer in Charge.

S & F in repair Suction pressure sensor for chiller unit 220TR , cat part No- SE8121048 complete all as directed by Engineer in charge .

Supply and charging of Gas Vacuum the system and after maintaining vacuum for 24 hours supply and charge refrigerant gas 407 C complete all as specified and directed by the Engineer-in-Charge.

Supply & fixing in replacement of V belt B Series as per site requirement complete all as specified and directed by Engineer in Charge.

Supply & fixing in replacement of V belt A Series as per site requirement all as specified and directed by Engineer in Charge.

Supply and installation of Scroll type Compressor of Capacity 12 TR for Central type AC Plant , Model No. SM185 of make Danfoss duly filled with compressor oil in existing position, also including making new connections with all control lines with & including necessary copper fittings, necessary welding etc, copper lugs, copper cables etc with controlled unit for smooth running, complete all as specified and directed by Engineer in Charge.

Supply & fixing in replacement of Timer 3-30 Seconds as per site requirement

Supply & fixing in replacement of power contactor type range 40 A as per site requirement Make-L&T or equivalent as aproved by GE

Supply & fixing in replacement of power contactor type range 32 A as per site requirement Make-L&T or equivalent as aproved by GE

Supply & fixing in replacement of Thermister Temperature Sensor

Supply & fixing in replacement of overload relay type MN-2 range 6-10 A as per site requirement

Supply & fixing in replacement of overload relay type MN-2 range 9-15 A as per site requirement . Make-L&T or equivalent as aproved by GE

Supply & fixing in replacement of overload relay type MN-2 range 14-23 A as per site requirement

Supply & fixing in replacement of overload relay type MN-2 range 20-33 A as per site requirement

Supply & fixing in replacement of overload relay type MN-2 range 24-40 A as per site requirement

Supply and fixing in replacement of 3 phase Ampere meter having range 0 - 50 Amp including accessories complete.

Supply and fixing in replacement of 3 phase Voltmeter having range upto 520 V (P-P) including accessories complete.

Supply & fixing in replacement of on load changeover Switch 400 A, 3 phase, type CO4-400, with sheet Steel Enclosure including refixing of cable and connected items

Supply and fixing in replacement of MS Pipe 'B' class of Dia 150 mm complete.

Supply & fixing in replacement of Non return Valve of size 125 mm dia complete all as specified and directed

NOTES: 1. The amount of schedule of credit shall be deducted from the total of this BOQ for arriving at contract sum. 2. The rates for RCC/PCC shall deemed to include the cost of formwork, shuttering etc., required for complete and proper execution of the item. Refer Schedule "A" notes for details.

M/S L N ENTERPRISE

M/S BARUA REFRIGERATION WORKS

Singhs Construction

REMCO

FREEZCON