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

Amount

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.

M&L for Re-winding of electric motor for 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

Supply & installation 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 complete all as specified and directed by Engr-in-Charge.

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

S &F in replacement pre filters 15 micron capacity of size 56cmx56cmx5cm Make-Athlete/Micron/Puromatic/Spectrum.

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

Supply and fix repair in replacement of FCU 2 TR capacity with all accessories,gate valve including taking out old unserviceable FCU with accessories,gate vaive 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.

S&F in repair/replacement MS ERW pipe 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 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 thermostate 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 laying in repair/replacement wall and floor in cable trays cable PVC control cable LT 1100 volt grade with copper conductor of size 1.5 sq mm, 8 core 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 of MS Y-stainer for chiller plant of size 150 mm complete all as directed.

S&F 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.

S&F gunmetal 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.

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/tower type AC upto 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 (unserviceable spares required to be replaced shall be measured & paid for "Supply only" separately under respective items.

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

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

M & L Starting relay suitable for upto 4.0 Ton capacity AC Make : Renutrol/Classic/Indfos.

Supply& fix in replacement over load protector suitable for upto 4.0 TR capacity AC any type Make : Renutrol/Classic/Hitech.

M & L repair /replacement of any type of comprressor upto 2.0 TR capacity AC any type including taking out old unserviceable compressor complete all as directed by Engr-in-Charge

M & L repair /replacement of any type of comprressor upto 3.0 to 4.0 TR capacity AC any type 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 upto 2.0 Ton capacity window type ACs .

Supply and fixing in replacement fan motor of indoor unit 1/4,1/5 HP single/double shaft as per existing model sutaible for any make ACs as per requirement.

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 condenssor fan blade made out of plastic suitable for 3 Ton capacity window type AC. Make- Blue star/Voltas/Carrier.

Supply & fixing in repair condenssor 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.

All as per item No 41 above but internal dia 9 mm (3/8") -do-

All as per item No 41 above but internal dia13 mm (1/2")-do-

S&F copper tubing heavy duty inner dia 6 mm (1/4") for refrigerant for ACs.

S&F copper tubing heavy duty inner dia 9mm (3/8") for refrigerant for ACs.

S&F copper tubing heavy duty inner dia 13mm (1/2") for refrigerant for ACs.

S&F COPPER TUBING 5/8 INCHES dia suitable for AC ducting complete with brazing and joining including foam wripping complete

S&F COPPER TUBING 1-1/8 INCHES dia suitable for AC ducting complete with brazing and joining including foam wripping complete

Supply and Fixing in repair synthetic rubber tube insulation of thickness (5/8") 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 (1/8") for refrigerant copper piping of split AC units including suitable PVC tape .Make Supreme/Gulf-o-flex/Superlon.

S&F communication cable of 1 sqmm 2 core for VRF unit

S&f in repair of PCB make DIKIN VRF 20 HP

S&F in replacement PCB board with panel make daikin VRF 20 HP

Supply and fix in replacement of out door motor DC 1106 model for daikin VRF 20 HP

S&F water flow switch

S&F MNX 25 ,4 pole contactor

S&F reset relay 16 to 23 amp

S&F AHU motor 5 HP

S&F condensing coil suitable for 2/3 Ton split/window type ACs as per existing size/shape.

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

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.

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

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

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 armored 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 armored cable 1 sqmm 6 core complete all as specified and as directed by Engr-in-Charge. Make-Gloster, Havells, polycab

Supply and fixing indoor unit kit OF split type AC 1.5/2 Tonwith PCB complete SET with sensor complete with fixing plate suitable to non inverter type AC complete all as specified and directed.

Supply and fixing outdoor unit kit OF split type AC 1.5/2 Toncomplete with compressor, condensor coil, condensor fan with blade and sensor suitable to inverter type existing model and make AC all as specified and directed. Make:- Carrier, Blue star, Napolean & Totaline.

Supply and fixing indoor unit kit OF split type AC 3.0 Ton with PCB complete SET with sensor complete with fixing plate suitable to non inverter type AC complete all as specified and directed.

S&F in replacement changeover open execution type along with 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 fixing of motorised butterfly in replacement of dia 125 mm along with actuator , pcb complete suitable for single phase supply 220 V doing electric connections along with necessary alteration in existing pipelines, along with neceesary welding cum joining work complete all as specified and as directed .Make-Universal Switchgears/ Zoloto

M&L for fixing of motorised butterfly in replacement of dia 165 mm along with actuator , PCB complete suitable for single phase supply 220 V doing electric connections along with necessary alteration in existing pipelines, along with neceesary welding cum joining 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 s 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 of thermal insulation with thermocol 50 mm thick and width not exceeding 200mm covered with chicken wire mesh and 10 mm CM 1:6 on the top Edge at Supply and return pipe complete all as specified and directed by Engineer-in-charge.

M & L thermal insulation for air duct with 13mm Nitrile Rubber all as specified and as directed.

Supply & fix under deck insulation with 25mm Nitrile rubber with 40-60 kg density (for AHU Room) complete all as specified and as 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 (BID ID -3158714)