REPAIR/MAINT AND ALLIED WORKS TO CENTRAL AC PLANT AT BASISTHA UNDER GE GUWAHATI

Amount

NOTE (Applicable for all items):- The bidders/contractors are advised to read tender documents & all corrigendum/amendments and General conditions of contracts before entering/quoting the rates.

Carrying out Annual Maintenance Contract of 75 TR water cooled chiller plant by authorised agency of OEM (Original Equipment Manufacturer i.e. Blue Star) and day to day maintenance of Central Air Conditioner unit comprising of 75 TR Chillers (02 working and 01 stand by) including following: -

(a) Carry out periodic inspection and preventive maintenance for efficient functioning of the chiller units, maintaining proper condition of temperature and humidity in conditioned enclosed spaces.

(b) Checking the actual performance /operationing parameters with respect to the desired parameters and take corrective action when there is difference.

(c) Attending Fault/ defect of any nature within 4 hours of intimation and rectification of the same. Penal recovery @ Rs 250/- per hour and Rs 5000/- per day will be deducted for attending of fault beyond 6 hours of intimation.

(d) In addition to above, Quarterly visit by Engineer from authorised agency of OEM be carried out for overall checking of the plant and to carryout preventive maintenance checks.

(e) Carry out oil inspection as and when required including testing of the same for the serviceability for better life of lubrication parts and motor.

(f) Checking the set parameters in the controller taking and safety fault trips taking control test contacts cleaning

(g) Carry out repair /replacement of parts /spares/ driers/oil as suggested by Engineer from authorised agency of OEM.

(h) Carry out overall Servicing, including detail check up and maintenance/ calibration of relays of microprocessor based Control panel of 75 TR AC Plant and keep the same functional all as specified and directed.

(k) Refrigerant leak test is to be carry out under supervision of Engineer from authorised agency of OEM.

Note : (a) The cost of taking out old spares/ parts for replacement deemed to be included in the quoted rate. The new spares/ parts will be measured and paid under relevant item of this schedule as 'Supply only'. Maintenance of ducts, pumps, valves, Descaling of condensors/ cooling towers will be measured and paid separately.

(b) All necessary tools and plants shall be arranged by the contractor and the cost thereof deemed to be included in the quoted rate.

(c ) The responsibility of Payment in advance if demanded by the authorised agency of OEM shall be of the contractor. Department will pay any item after execution only.

(d) The quoted rate deemed to be inclusive of lifting /shifting/ transit charges against any type material ,up/down the building or shipment cost or freight of any material from site to workshop (except where separately specified) or any sub venders works. All other charges and transit insurance will be included in this contract.

Supply only following items suitable for 75 TR chiller unit (Genuine parts only):-

Prssure transducer - Low presure

Presure Transducer-High pressure

Presure Transducer-Oil Presure

Temperature sensor

Liquid injection solenoid valve

Loading and unloading selonoid valve

Oil filter

Gasket & 'o' ring kit for oil filter

Capacity control solenoid coil

Oil Heater

Drier core

Pressure relief valve

Material & Labour for descaling of complete condenser units for central AC plants (AC Plant Make- Blue star) of capacity 75 TR by means of adding descaling chemical solution (HCL) or equivalent as per requirements and running the plant pump continuously till all the scale of pipes/shell are removed including removing side covers of condenser and cleaning the water tubes by means of nylon brushes till the scaling is removed and re fixing of covers including replacement of neoprene rubber gasket and refixing pipe connection etc. all as specified and directed. Note: Descaling shall be carried out in supervision of Engineer from authorised agency of OEM

Repairing /servicing and overhauling the centrifugal pump of following capacities by dismantling the pump from induction motor, opening for inspection, replacing the worn out parts like gland bush, bearings, gland bolts and nuts,gland packing, gasket, water seal etc including repairs to pump shaft by remetalling, grinding, polishing and reassembling the same and replacing the rusted nuts, bolts, washers etc and testing complete all as specified and directed. Note : Spares other than not specifed are required during reparing /replacement shall be measured and paid separately under relevent items of schedule 'A' as supply only

(a) Condenser Pump of capacity 7.5 HP

(b) Chilled Pump of capacity 12.5 HP

Material & Labour for taking out the centrifugal pumpset & comppresor's motors and transporting to reputed work shop , dismantling the motor incl taking out old and unserviceable burnt winding wire & providing new winding wire of super enameled copper winding of suitable size including insulating materials, varnishing, drying, reassembling and transporting back to site, testing and commissioning all as directed for the following capacities of motors : -

(a) Condenser motor of cap 7.5 HP

(b) Chilled motor of cap 12.5 HP

(c) Cooling tower induction Motor of Cap 7.5 HP

(d) Blower Motor of Cap 12.5 HP

(e) Blower Motor of Cap 5 HP

(f) Blower Motor of Cap 3 HP

Supply & Fixing gland packings for centrifugal pumpsets as and when required complete all as specified and directed for pumps of capacity mentioned under item No. 6.00 above.

Material & Labour for painting of following pump sets with two coats of approved synthetic enamel paint complete all as specified and directed:-

(a) Condenser Pump

(b) Chiller water Pump:

(c) Cooling tower Pump :

Supply only 3 KW Strip Heater suitable for 75 TR AHU complete all as specified and directed.

Supply only 'V' belts of blower motor of following size (Make : Fenner or its equivalent products approved by GE.): -

(a)SPB 1500mm

(b) SPA 1250mm

(c) SPA 900mm

(d) SPA 850mm

Material & Labour for charging of refrigerant gas R-22 including opening and re-assembling of connected acessories of central AC plant of capacity 75 TR, complete all as specified and directed .

Dismantling and taking down existing deteriorated/aluminium clading sheet/Arma flex insulation duct /corrded Air duct of any type complete with nuts, bolts, washers, packing materials and MS bracket etc all as specified and directed, from ground level to upto 20ft height.

Supply, fabricate and erect PGI Air duct made out of 22 gauge PGI sheet including necessary support, jointing with suitable size MS Angle/flat iron and 3mm thick rubber packing, drilling and necessary GI nuts, bolts & washers all as specified and directed, from ground level to upto 50ft height. Make : PGI sheet-Jindal/Fedders Llyod /Tata/Sail

Supply, fabricate and erect PGI Air duct made out of 24 gauge(Duct) PGI sheet including necessary support, jointing with suitable size MS Angle/flat iron and 3mm thick rubber packing, drilling and necessary GI nuts, bolts & washers all as specified and directed, from ground level to upto 50ft height. Make : PGI sheet-Jindal/Fedders Llyod /Tata/Sail

Supply, fabricated and erect PGI Air duct made out of 20 gauge(For AHU ) PGI sheet including necessary support, jointing with suitable size MS Angle/flat iron and 3mm thick rubber packing, drilling and necessary GI nuts, bolts & washers all as specified and directed, from ground level to upto 50ft height. Make : PGI sheet-Jindal/Fedders Llyod/ Tata/Sail

Dismantling and taking down old U/S insulation of supply air duct completed with rockwool/ Arma flex insulation/mineral wool slab with chicken wire mesh complete all as specified and directed.

Material & Labour for insulation to supply air duct with 25 mm thick rockwool/mineral wool slab covered with chicken wiremesh tissue paper and 24/26gauge aluminium sheet cladding work complete all as specified and directed. Make: UP Twiaga / Khimco/Fedders Llyod or its equivalent products approved by GE.

Material & Labour for insulation to supply air duct for OT AHUS with 20 mm thick armafex insulation covered with armaflex insulation using SR 505 fevicol solution complete all as specified and directed. Make: UP Twiaga/Khimco/Fedders Llyod or its equivalent products approved by GE.

Material & Labour for insulation to 3x75 TR chillar unit with 25 mm thick armafex insulation covered with armaflex insulation using SR 505 fevicol solution complete all as specified and directed. Make: UP Twiaga/Khimco/Fedders Lioyed or its equivalent products approved by GE.

Taking down old unserviceable air diffuser of any size complete all as specified and directed.

Supply & Fixing aluminium powder coated supply air diffuser minimum 22 gauge with volume control damper complete all as specified and directed.

Supply & Fixing aluminium powder coated return air linear diffuser minium 22 gauge complete all as specified and directed.

Supply only double skin polymer fabric HDPE fresh air filter(Filter class-G3 as per EN 779) washable/cleanable type having efficiency 95% to 99% down to particle size of 20 micron, fabricated out of CRCA sheet metal duly painted with two coats of grey hammer tone spray paint over two coats of red oxide primer with lifting handle, Box/flanged type, aluminium spacer etc, all as specified and directed of following sizes :-

a) 610x610x50mm

b) 600x600x50mm

c) 600x300x50mm

Supply only double skin polymer fabric HDPE fresh air filter(GL-type) washable/ cleanable type having efficiency 95% to 99% down to particle size of 5 micron, fabricated out of CRCA sheet metal duly paint with two coats of grey hammer tone spray paint over two coats of red oxide primer, with lifting handle, Box/flanged type, aluminium spacer etc, including taking down all as specified and directed of following sizes :-

a) 610x610x300mm

b) 600x300x300mm

Supply only "HEPA" filter (EN-1882) with fibre glass paper filtering media capacity 1000 CFM efficiency 99.97% down to particle size of 0.3 to 0.5 micron aluminium frames box type of size 610x450x300mm including taking down all as specified and directed.

Supply & Fixing in replacement butter fly valve of dia 100mm suitable for condensing /chiller water line with ISI marked including jointing with proper gasket, nuts, bolts & washer all as specified and directed. Make C&R, Kirloskar or its equivalent products approved by GE.

Supply & Fixing in replacement butter fly valve of dia 125mm suitable for condensing /chiller water line with ISI marked including jointing with proper gasket, nuts, bolts & washer all as specified and directed. Make C&R or its equivalent products approved by GE.

Supply & Fixing in replacement butter fly valve of dia 150 mm suitable for condensing /chiller water line with ISI marked including jointing with proper gasket, nuts, bolts & washer all as specified and directed. Make C&R or its equivalent products approved by GE.

Supply & Fixing in replacement NRV of dia 150 mm suitable for condensing /chiller water line with ISI marked including jointing with proper gasket, nuts, bolts & washer all as specified and directed. Make C&R or or its equivalent products approved by GE.

Supply only water pressure gauge 4" dial type with cock 0-7 Kg/Sqmtr complete all as specified and directed. Make : Fiebig/H-Guru or its equivalent products approved by GE.

Supply only refrigerant pressure gauge 4" dial type with cock 30 to 150 PSI complete all as specified and directed. Make : fiebig/H-Guru or its equivalent products approved by GE.

Supply only refrigerant Temp. gauge 4" dial type cock 0C to 50 C complete all as specified and directed. Make : fiebig/H-Guru or its equivalent products approved by GE.

Supply only ball bearing suitable for cooling tower motor, chillar motor, Blower motor, condenser motor etc removing of existing unserviceable bearing of any type or make all as specified and directed. Make - SKF or its equivalent products approved by GE.

(a) No- 6308zz

(b) No - 6309zz

(c) No - 6311zz

(d) No - 6313zz

Supply only MCCB of following capacities:-

(a) 250A, FP, 415V, 50 Hz, 36 KA adjustable type

(b) 160A, FP, 415V, 50 Hz, 36 KA adjustable type

(c) 100A, FP, 415V, 50 Hz,16KA adjustable type

Supply only MCB of following capacities:-

(a) 63A, TP, 415V, 50 Hz

(b) 32A, TP, 415V, 50 Hz

(c ) 16A, TP, 415V, 50 Hz

Supply only contactor of following capacities suitable for existing of panel and as per sample complete all as specified and directed.

(a) 100A, 3 Pole, AC, 220 Volts

(b) 40A,3 Pole, AC, 220 Volts

(c ) 32A, 3 Pole, AC, 220 Volts

(d) 25A, 3 Pole, AC, 220 Volts

Supply only over load relay of following capacities suitable for existing panel and as per sample complete all as specified and directed.

Supply only blower of capacities BDB 400 CM, Code No.CBC 12121-00-00 suitable for existing AHU and as per sample complete as speicified and directed. Make : Kuzer or its equivalent products approved by GE.

Supply only Compressor oil, type 5 GS (White), duly filled for top up to central AC plant of capacity 75 TR, complete all as per manufacturer's recommendation and as directed.

Supply only microprocessor based Control card for control system of Screw chiller 75 TR AC Plant as per sample complete all as specified and directed.

Installation of new software in controller and display unit for Central AC plants (AC Plant Make - Blue star) of capacity 75 TR complete all as specified and directed.

Supply only Controller and display set for Screw chiller of Central AC plants (AC Plant Make - Blue star) of capacity 75 TR of existing make & model complete all as specified and directed.

Material & Labour for servicing of main air handling unit (AHU) for Central AC plants (AC Plant Make - Blue star) of capacity 75 TR by opening of AHU, cleaning of cooling tubes, cleaning of drain pipe ,greasing to bearings of blower shaft-02 Nos, cleaning/replacement of filters for supply air grills and return air grills, ensuring the tightness, pullies in blower and motor, cleanig of blower wheel fins and re-fixing in position all as specified and directed. Note - New Air filter shall shall be measured and paid separately under relevant items as "supply only".

Supply & Fixing in repair, Humidity thermostat of existing make for AHU unit of Central AC plants (AC Plant Make - Blue star) of capacity 75 TR complete all as specified and directed.

Supply & Fixing in repair, Humidity Controller of existing make for AHU unit of Central AC plants (AC Plant Make - Blue star) of capacity 75 TR complete all as specified and directed.

Servicing and de-scaling of FRP cooling tower induced draft counter flow of dimension 2855x3100x3850mm of Central AC plants (AC Plant Make - Blue star) of capacity 75 TR complete with chemical solution as recommended by manufacturer with rods and wire brushes complete all as specified and directed.

Disconnecting electrical connections and dismantling of unserviceable two body mortuary cooling chamber of 3 TR capacity, single phase, machine (Model No RT 46 of Make : Blue star), servicing of evaporator coil & Condensing coil of mortuary cooling chamber, cleaning of cooling coil, washing with chemicals, cleaning of fins, copper tubes, pipes blower motor and other connected accessories and taking out and replacement of unserviceable/ defective spares/ parts with new ones and re-assembling, refixing two body mortuary cooling chamber in position duly repaired, jointing of refrigerant pipe lines filling of refrigerant gas and testing complete all as specified and directed. Note - New spare/parts shall be measured and paid separately under relevant items as "supply only".

Supply only starting capacitor suitable for single phase, 40MFD, 220 volts, 50 Hz mortuary cooling chamber all as described here in before under item No. 47.00 as per existing make & model complete all as specified and directed.

Supply only Starting relay suitable for single phase, 220 volts, 50 Hz mortuary cooling chamber as described here in before under item No. 47.00 as per existing make & model complete all as specified and directed.

Supply only over load protector suitable for single phase, 220 volts, 50 Hz mortuary cooling chamber all as described here in before under item No. 47.00 as per existing make & model complete all as specified and directed.

Supply only Blower fan motor of mortuary cooling chamber, single phase, AC 220 Volts, 50 Hz all as described here in before under item No. 47.00 as per existing make & model complete all as specified and directed.

Dismantling of sealed compressor unit (.Make : Kirloskar) after removing refrigerant pipe connection, electric wire connection etc from two body mortuary cooling chamber and S&F 3 TR sealed unit compressor for machine Model RT-46, 230 Volts, AC, single phase, 50 Hz, 8.5 Amps including vaccum and charging of refrigerant gas R-22, leakage test and testing of the same complete all as specified and directed.

Material & Labour for leakage testing with nitrogen gas pressure 24 to 48 hours, checking of copper pipe lines, cooling coil, suction/discharge gas pipe lines and repair of the same with gas welding, replacement of defective nuts/washers with new ones for mortuary cooling chamber as required at site complete as specified and directed .

Servicing, greasing and varnishing of blower fan motor of mortuary cooling chamber, AC 220 Volts, 50 Hz., complete all as specified and directed.

Dismantling of sealed compressor unit (Make: Kirloskar) carefully after removing refrigerant pipe connection, electric wire connection etc from outdoor unit of Walk in cooler and Supply & Fixing sealed unit compressor , capacity 3 TR, 3 phase, 415 Volts, including vaccum and charging of refrigerent gas, leakage test and testing of the same complete all as specified and directed .

Material & Labour for leakage test with nitrogen gas pressure 24 to 48 hours, checking of copper pipe lines, cooling coil, suction/discharge gas pipe lines for leakage of walk- in- cooler and repair of the same with gas welding, replacement of defective nuts/washers with new ones complete all as specified and directed.

Supply & Fixing high speed blower fan motor of walk -in -cooler (Make of walk -in -cooler - Kirloskar) for outdoor unit, AC 415 Volts, 50 Hz as per existing model and RPM, fixing in position including electrical connections complete all as specified and directed.

Material & Labour for cleaning, servicing of complete outdoor and indoor unit evaporator coil of walk -in -cooler (Make of walk -in -cooler - Kirloskar), 3 TR Capacity, cleaning of cooling coil with blower fan, washing with chemicals, cleaning of fins, copper tubes, pipes, blower motors and other connected accessories complete all as specified and directed.

Supply & Fixing high speed blower fan motor of walk in cooler for indoor unit, AC 220 Volts, 50 Hz as per existing model and RPM, fixing in position including electrical connections complete all as specified and directed.

Material & Labour for cleaning, servicing of complete indoor and outdoor unit evaporator coil of walk in cooler 10000 Btu/hrs Capacity, (Make of walk -in -cooler - Kirloskar), cleaning of cooling coil with blower fan, washing with chemicals, cleaning of fins, copper tubes, pipes, blower motors and other connected accessories complete all as specified and directed.

Material & Labour for Leakage testing, nytrogen flushing, vacumising and gas charging of 10000 Btu/hrs Walk-in-cooler of Make Blue Star complete all as specified and directed.

Supply & Fixing in repair, controller and display set for Walk -in - cooler of existing make & model complete all as specified and directed.

M.G. ENTERPRISE

M/S SEWAK SINGH