REPAIR/MAINTENANCE FOR 3 X 90 TR AC PLANT ALONGWITH COOLING APPLIANCES INSTALLED AT NDC UNDER GE NEW DELHI, DELHI CANTT-10

Amount

M&L for maintenance of equipment in heating system of AC plant as spelt out including replacement of all worn out/defected parts as and when required/ detected including cleaning and taking down and refixing all as directed by Engr-in-Charge.

M&L for Re-winding of electric motor of centrifugal pump of capacity 3 phase 415V upto 10 HP with copper super enamelled winding wire of same gauge with class H Insulation,water sealed after taking out burnt winding from stator and cleaning slots etc, varnishing, drying reassembling,testing including taking out from AC plant to carry over work shop after completion of work and refixing with allengment at NDC AC plant complete satishfactory all as specified and directed by Engr in charge. Note for item No 2 : -Materials required to be repalced shall be measured and paid for separately under supply only relevant item of BoQ.

Supply only bearing suitable for 7.5KW/ 10HP condenser pump Make- SKF/ NBC/TATA.

Supply only bearing suitable for 5HP condenser pump Make- SKF/ NBC/TATA.

M&L for painting of plant, pumps, panels, cooling tower etc with two coats of synthetic enamel paint of existing color complete all as specified and directed by Engr-in-Charge.

M&L for repair of cross linked closed cell thermal insulation of 30mm over chilled water pipes of any size thermal conductivity of insulation would not exceecd 0.038 w/mk at 400C. Material is fire retardant & self-extinguishing and certified class 1 certified as per BS 476 part &. It is CFC free. On combustion it would not emit HCN NO+ NO2 and SO2 + H2S gases. Smoke generated would be lighter than air and white in colour so as to allow easy exit passages in case of fire. Thermal insulation would be protected by thermal insulation protective coating of aluminium sheet not less than 0.30 mm thick in short length including taking down old thermal insulation complete all as specified and directed.

Comprehensive and preventive maintenance of 03 Nos screw type chilling plant each of 90 TR capacity Model ERTWA-211 having semi hermetic sealed compressor, shell and tube type condenser with micro processor in including material and replacement of all parts pertains to above model chiller, the contractor will ensure that OEM is liable to give per month preventative maintenance visits and also on call on requirement basis as and when required.

(b) Descaling with chemical overhauling of condensing,cooling,pumps,pipe lines & replacement of siphon with gauge of AHU

(c ) All the parts pertaining to 3x90 TR chillers model ERTWA-211 Make should be supplied and replaced by OEM. The cost of parts shall deemed to be included in quoted rates. No extra payment shall be made on this account.

(d) Contractor is to act promptly on call and any complaint shall be attended with in 30 minutes as the area is very sensitive and delay is not acceptable.

(e) The contractor will maintain the temp & humidity as under :- Inside condition Library room, dining hall Other area and lecture room DB Temp 72º F +4º F (22º C + 2º C) 75º F + 4º F(24º C ± 2º C) RH 55% ± 5% 55% ± 5%

(f) Descaling of condensers shall be carried out by contractor through OEM before on set of summer season.

(g) T&P required for comprehensive & preventive maintenance shall be provided by the M/S Trane it self.

(h) Comprehensive & preventive maintenance shall be carried out at site NDC irrespective of distance.

(j) Spectro chemical oil analysis and oil replacement shall be carried out by contractor through M/S Trane in the beginning of the contract and after every year.

(k) In case need arises to the change the compressor as a whole due to any defect M/s Trane is to inform the department well in time to avoid breakdown.

(l) The contractor to ensure the parameters of different component of central AC plant on a checklist at fortnight basis with suitable instrument

(i) Condenser (a) Water temperature IN - 32.2⁰C (b) Water temperature OUT - 36.4⁰C (c) Temperature rise - 4.2⁰C (d) Maximum permissible pressure drop 10m of water head

(ii) Chiller (a) Water temperature IN - 12.2⁰C (b) Water temperature OUT - 6.67⁰C (c) Temperature rise - 5.5⁰C (d) Maximum permissible pressure drop 10m of water head

(iii) Piping (a) Maximum flow velocity 2.5m/s

(iv) AHU (a) Max face velocity across cooling coil - 155 m/min (b) Max outlet air velocity - 610m/min (c) Max velocity across filters- (i) Micro Vee filters - 155m/min (ii) Ducting for air-conditioning Main Duct Branch Duct Max flow velocity 400 m/min 250m/min (iii) Max velocity of air at supply of air diffusers - 150m/min

(m) Instruments needed for all type of testing will be provided by the contractor and rate for the same to be included in the quoted rate.

Supply and top up of compressor oil suitable for screw chiller of trane make complete all as specified and directed.

Supply only pre filters 15 micron capacity of size 56cmx56cmx5cm Make-Athlete/Micron/Puromatic/Spectrum.

Supply only fine filter 5 micron capacity of size 56cmx56cmx5cm Make-Athlete/Micron/Puromatic/Spectrum.

Supply & charging refrigerant gas R-22 complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of water heating element 3 phase (3x6KW) 18 KW 415 volts for hot water generator confirming to IS marked(as per sample).

Supply and fix in replacement water pressure gauge 0 to 10.6 kg. Make-FIEBIG/ H. GURU/ EMERALD/ ANERGY.

Supply and fix in replacement butter fly valve(wafer type) PN1.6 with SG Iron disc liver operated body SG Iron size 150 mm. Make-Zoloto/ AUDCO/LEADER /CASTLE.

Supply and fix in replacement butter fly valve(wafer type) PN1.6 with SG Iron disc liver operated body SG Iron size 125 mm. Make-Zoloto/ AUDCO/LEADER /CASTLE.

Supply & fix in replacement strip heater 2 KW for humidity control system. Make-RAYCOLD/ DASSPASS/HONEYBEE.

Supply & fix in replacement over load relay ML type 9-15 amp Make-L&T/ ABB/ SIEMENS /SCHNEIDER.

Supply & fix in replacement contactor ML 1.5, 3 pole, 440 volts 50 Hz Make-L&T/ABB/Legrand.

Supply & fix in replacement contactor MNX 25 with 1NO+ 1NC , 3 pole, 440 volts 50 Hz Make-L&T/ABB/Legrand.

Supply & fix in replacement water tray of FCU made out of GI sheet, 20 gauge with insulation of size 48"x6"x2".

Supply & fix in replacement water tray of FCU unit made out of GI sheet, 20 guage with insulation of size 39"x6"x2".

Supply & fix in replacement water tray of FCU unit made out of GI sheet, 20 guage with insulation of size 13"x9''x2"

Supply & fix in replacement fan blade assembly complete for cooling tower motor of capacity 7.5 HP complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of FCU 2 TR capacity with all accessories, gate valve including taking out old unserviceable FCU with accessories,gate valve complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement of Air cooling unit body size 39X39X72 inch body guage (40 Guage), 21"fan 1400 RPM with submersible water lift pump wood wool pad with mosquito mat tank capacity 400 Ltr and 15000-1800 CFM with electrical fittings and plumber works for installation and connecting with existing duct complete all as specified and directed by Engr-in-Charge.

Supply and fix in replacement MCCB three pole (3 pole) 415 Volts grade 250 amps rating,35 KA rupturing capacity and both thermal and magnetic adjustable type complete all as specified and directed by Engr-in-Charge.. Make- L&T/ Legrand /CG/C&S/Indoasian.

Supply and fix in replacement of LED indicator bulb(red/green )colour of suitable size as directed. L&T/ Havells/CG.

S&F in repair/replacement MS pipe heavy grade of size 125 mm complete with flange,bend whichever required for fixing complete in all respect as directed by Engr-in-charge including welding work as required for . Make- JINDAL PIPES/ TATA/ BST/ PRAKASH TUBES/ OSWAL.

S&F in repair/replacement of MS pipe heavy grade of size 100 mm complete with flange,bend whichever required for fixing complete in all respect including welding work as required on site as directed by Engr-in-charge. Make- JINDAL PIPES/ TATA/ BST/ PRAKASH TUBES/ OSWAL.

S&F in repair thermostat of suitable size and capacity to the chiller pipe line complete all as directed. Make-FIEBIG/ H. GURU/ EMERALD/ ANERGY.

S&F in replacement water flow switch of size 25 mm including nipple and socket complete all as directed.

Supply and fix in replacement PVC control cable , LT Cable 1100 volt grade with copper conductor of size 1.5 sq mm, 8 core fixed on wall and floor, inside the cable tray complete all as specified and directed by Engr-in-Charge.

S&F in replacement cooling tower fins suitable for 200 TR capacity vertical counter flow complete all as directed.

S&F in replacement Y-stainer for chiller plant of size 150 mm complete all as directed.

S&F in replacement gun metal gate valves, cast copper alloy, screwed down, high pressure, with crutch or butterfly handle, screwed both ends for iron pipe or for unions and fixed of size 25 mm bore, complete all as specified and directed.

S&F in replacement gun metal gate valves, cast copper alloy, screwed down, high pressure, with crutch or butterfly handle, screwed both ends for iron pipe or for unions and fixed of size 50 mm bore, complete all as specified and directed.

Labour for checking and attending complaints of ACs, water coolers, Refrigetors etc of any capacity, rectification of minor defects and make the equipment fuctional complete all as directed.(any parts required for replacment shall be measured and paid for separately under relevant item of BOQ/Sch 'A' as "Supply only") NOTE : 1 The contractor should detail minimum one AC mechanic & one helper to attend complaints in NDC areas. 2. The complaint should be attended on same day. 3. If the complaint not attended/not completed on same day recovery will be done as follows. a) For first day Rs 200/- b) For second day Rs 300/- c) For next every day Rs 500/-.

Servicing of Window/Split type AC 1.5/2/3 Ton capacity of any make / model by taking out the AC, Cleaning of evaporating coil, condensing coil with water & brush to remove dust including cleaning of filter, greasing oiling of fan motor and checking of electric circuit for smooth functioning of AC. Note : Unserviceable spares required to be replaced shall be measured & paid for "Supply only" separately under respective items.

Supply only Running capacitor 36 mfd 230 volt suible for AC 1.5 Ton. Make : Usha/Epcap/Tesla.

Supply only Running capacitor 45 mfd 230 volt suible for AC 2 Ton. Make : Usha/Epcap/Tesla.

Supply only Running capacitor combination 50 mfd + 6 mfd 230 Volt for AC 2 Ton. Make : Usha/Epcap/Tesla.

Supply only Running capacitor 80-100 mfd 230 volt. Make : Usha/Epcap/Tesla.

Supply only Running capacitor 4/6 mfd 230 volt Make : Usha/Epcap/Tesla.

M & L Starting relay suitable for 1.5Ton capacity AC Make : Renutrol/Classic/Indfos.

M & L starting relay suitable for 2 Ton capacity AC Make : Renutrol/Classic/Indfos.

M & L starting relay suitable for 3 Ton capacity AC Make : Renutrol/Classic/Indfos.

Supply& fix over load protector suitable for 1.5/2 TR capacity AC Make : Renutrol/Classic/Hitech.

M & L in repair /replacement of reciprocationg compressor 1.5 TR capacity including taking out old unserviceable compressor complete all as specified and directed by Engr-in-Charge.

M & L in repair /replacement of reciprocationg compressor2 Ton capacity including taking out old unserviceable compressor complete all as specified and directedby Engr-in-Charge.

Supply & fixing in repair Rotary type compressor capacity 1.5 TR including taking out old unserviceable compressor complete all as directed by Engr-in-Charge.

Supply & fixing in repair Rotary type compressor capacity 2.0 Ton including taking out old unserviceable compressor complete all as directed by Engr-in-Charge.

Supply and fixing in repair air filter synthetic/ nylon as per existing size and shape suitable for 1.5 Ton capacity window type ACs complete all as directed.

Supply and fixing in repair air filter synthetic/ nylon as per existing size and shape suitable for 2/3 Ton capacity Split type ACs complete all as specified and directed.

Supply and fix in replacement indoor unit fan motor 1/4,1/5 HP single/double shaft as per existing model suitable for any make ACs as per requirement complete all as directed.

Supply and fixing 1.5 TR capacity window type AC kit including condensing coil,evaporating coil,front grill,blower motor,blower and fan,chasis base plate complete except compressor. Make- Blue star/Voltas/Carrier.

Supply & fixing in repair condensor fan blade made out of plastic suitable for 3 Ton capacity window type AC. Make- Blue star/Voltas/Carrier.

Supply & fixing in repair condensor fan blade made out of plastic suitable for 1.5/2.0 TR capacity window type AC. Make- Blue star/Voltas/Carrier.

Supply and Fixing in repair synthetic rubber tube insulation of thickness 9 mm & Internal diameter - 6.0 mm (1/4")for refrigerant copper piping of split AC units including suitable PVC tape .Make Supreme/Gulf-o-flex/Superlon.

Supply and Fixing in repair synthetic rubber tube insulation of thickness 9 mm & Internal diameter 9.0 mm (3/8")for refrigerant copper piping of split AC units including suitable PVC tape. Make Supreme/Gulf-o-flex/Superlon.

Supply and Fixing in repair synthetic rubber tube insulation of thickness 9 mm & Internal diameter 13 mm (1/2")for refrigerant copper piping of split AC units including suitable PVC tape. Make Supreme/Gulf-o-flex/Superlon.

Supply and fix in replacement copper tubing heavy duty inner dia 6 mm (1/4") for refrigerant for ACs complete all as specified & directed.

Supply and fix in replacement copper tubing heavy duty inner dia 9 mm (3/8") for refrigerant for ACs complete all as specified & directed.

Supply and fix in replacement copper tubing heavy duty inner dia 13 mm (1/2") for refrigerant for Acs complete all as specified & directed.

Supply and fix in replacement condensing coil suitable for 2/3 Ton split/window type ACs as per existing size/shape complete all as specified & directed.

Supply and fix in replacement brass ball valve of size 20x5/8 mm complete all as specified & directed.

Supply and fix in replacement brass ball valve with strainer of size 20x5/8 mm complete all as specified & directed.

Supply and fix fan belt suitable for air handling unit complete all as specified & directed.

Servicing of Package type AC 5/8.5 Ton capacity of any make / model by taking out the AC, Cleaning of evaporating coil, condensing coil with water & brush to remove dust including cleaning of filter, greasing oiling of fan motor and checking of gas leakage in gas pipe line & record the temp in register of library etc complete all as specified and directed.

M&L for servicing & maintenance to 285 KW Hot water unit of 3X90 TR AC plant including replacement 4 Nos of 17 KW cap of heater, removing the carbon/corresion, cleaning the carbon brushes including minor spares for make serviceable the entire unit and replace of copper bushes,lugs, ammeter & volt meter & testing up of proper out put of wattage each heater complete all as specified and directed.

Supply & charging R-410A suitable for 1.5/2/3 ton cap complete all as specified and directed.

Checking the performance/efficency of 3x90 TR Central AC Plant with thoroughly testing of chiller unit to FCUs and to check air leakage in all AHU ducts and also to record the temperature , RH , WB, DB in entire area office complex Officers Mess, library, AHU , plant and offices complete in all respect all as specified & directed by Engr-in-Charge. Notes:- (a) All above parameters record should be submitted by the contractor within first month of the contract. (b) Removal of insulation of chiller unit and flow measurement by ultrasonic flow meter in chiller pipe line and measurement of electrical parameter like voltage Amp etc. by power analyser (c) Reinsulating of removed insulation areas with insulation patches of all chiller units. (d) Submit the actual efficiency by calculating 3 mean value/average for chiller unit of Central AC plant. (e) Instruments required for testing & checking the parameters shall be provided by contractor at his own cost. (f) Insulation worn out during testing & re-insulation shall be provided by contractor at his own cost.

M&L for laying in replacement of XLPE PVC sheathed armoured copper cable 16 sqmm 3.5 core complete all as specified and as directed by Engr-in-Charge. Make-Gloster, Havells, polycab.

M&L for laying in replacement of copper armoured cable 1 sqmm 6 core complete all as specified and as directed by Engr-in-Charge. Make-Gloster, Havells, polycab.

S&F in replacement change over switch open execution type alongwith handle complete capacity 630 A,FN 630 TPN . Make-L&T cat Part SK95521/ Havells.

M&L in replacement Single phase preventer with Auto switch. Make- Bentex / Minilec.

M&L for fixing in replacement star delta Electronic Timers Type ST 100 [9107] 0-30 secs. Make- L&T cat part No- ST80328OOOO.

M&L for replacement of HRC fuse, DIN type 125 A complete with new one along with connectors complete all as specified and as directed by Engr-in-Charge. Make- L&T SF94230, Schneider, Legrand, havells.

M&L in replacement of motorised butterfly in replacement of dia 125 mm along with actuator , pcb complete suitable for single phase supply 220 V including electric connections along with necessary alteration in existing pipelines and including necessary welding cum joining work complete all as specified and as directed .Make-Universal Switchgears/ Zoloto.

M&L in replacement of motorised butterfly in replacement of dia 165 mm along with actuator , PCB complete suitable for single phase supply 220 V including electric connections along with necessary alteration in existing pipelines, and including neceesary welding cum jointing work complete all as specified and as directed . Make-Universal Switchgears/ Zoloto

M&L in replacement contactor 3 P, MN 110 complete all as specified and directed by engr-in-Charge. Make- L&T/ Schneider/ Havells.

M&L in replacement step type thermostat as per existing capacity suitable for hot water genarator installed at 3x90 TR AC plant complete all as specified and s directed by engr-in-Charge.

S&F in repair/replacement of MS pipe medium grade of size 40 mm complete with flange,bend whichever required for fixing complete in all respect including welding work as required on site as directed by Engr-in-charge. Make- JINDAL PIPES/ TATA/ BST/ PRAKASH TUBES/ OSWAL.

M&L for Repair and maintenance of thermal insulation with thermocol 50 mm thick and width not exceeding 200mm covered with chicken wire mesh and including rendering in 10 mm thick in cement mortar 1:6 on the top Edge at Supply and return pipe complete all as specified and directed by Engineer-in-charge.

M & L in repair/replacement of thermal insulation for air duct with 13mm Nitrile Rubber all as specified and as directed.

M & L in repair/replacement of under deck insulation with 25 mm Nitrile rubber with 40-60 kg density (for AHU Room) complete all as specified and directed.

Opening the upper sheet / side sheet of Cooling tower Cleaning, servicing of Chiller type AC Plant of any capacity / model / make for access to reserve water tank, cooling fan & cooling fins etc, M&L for washing/cleaning of cooling tower internally/ externally including cooling fins etc with mild acid (or caustic soda hot water solution) followed by water jet including cleaning/washing all as specified and as directed.

SNOWY ENGINEERING INC

SANJEEV ENTERPRISES