COMPREHENSIVE REPAIR WORKS OF CENTRAL AC PLANT AT NAD and TS(K) AREA UNDER AGE B/R ALWAYE

Amount

Material & Labour for opening and dismantling compressor voltas upto 30 to 52 TR cap for repairing/maint and cleaning/servicing the serviceable parts, replacing gaskets, 'O' rings, spring, piston rings, oil seals, scraper reeds and minor spares and replacing the defective parts with new including flushing out entire system by providing pressure, reassembling and making perfect allignment with motor and testing the functions of the system complete all as directed. Make: Voltas/Blue star

Supply the following items for compressor:-

Piston for Voltas upto 30 to 52 TR with rings.Make: Voltas/Blue star

Connecting rod with both end bearings for Voltas. Make: Voltas/Blue star

Cylinder liner with 'O' ring for Voltas. Make: Voltas/Blue star

Shaft seal assembly complete for Voltas. Make: Voltas/Blue star

LP/HP Cut out Make : Indfoss/Danfoss/ Voltas/Blue star

SP,COP gauge Make : Febig/Guru/ Voltas/Blue star

OP cut out Make : Indfoss/Danfoss/ Voltas/Blue star

Thermostate expansion valve for 30 to 52 TR Make : Alco/Emersion/Danfoss/ Voltas/Blue star

Solonoid valve loading/unloading Make : Sportan/Emersion / Voltas/Blue star

Hand shut off valve brass Make : Indfoss/ Voltas/Blue star

Gudgon pin with clip/ Voltas/Blue star

Thermostat sub zero for compressor (Voltas) / Voltas/Blue star

Removing the crank shaft and remetalling, grinding and polishing including both end bearings for Voltas/Blue star compressor 30 to 52 TR

Taking out electric motor 3 phase after disconnecting electric connection from foundation transportation to workshop and return back to site, opening, cleaning, insulating, varnishing heating, backing and reassembling including replacing of both end bearing and connecting in position for 15 to 20 HP.

Overhauling of monoblock pump set including replacement of gland packing stud with nuts upto 3 to 7.5 HP.

Taking out CT fan motor including fan after disconnecting electric connection from foundation and opening removing burnt coils, cleaning and rewinding with super enamelled copper wire of same guage insulating, varnishing, heating backing and reassembling including replacing of both end bearings and connecting in position upto 30 HP, 3 Phase.

Supply and filling compressor oil servo 68/Frezol

Supply charging Refrigerant gas, MAFRON/FLORON/R-22 gas.

Taking out complete air filters from AHU and cleaning removing dust and servicing and refixing filters as directed by Engr-in-Charge..

M&L for replacement of both end bearing pillar cock including reallignment of blower greasing cleaning etc.

Leak testing by providing nitrogen gas with required pressure locating the leak in the system and rectify the leaks and vaccunising (gas filling shall be measured and paid separately).

Supply of nitrogen gas in filled/sealed returnable standard cylinder of 6 Kgs.

M&L for insulation of duct wherever necessary with high density 50cm thick thermocoal/Mineral wool /Glass wool or any other improved version with chiken wire mesh and hession cloth and over all clading with aluminium foil of thickness 28 SWG in side the AHU. The duct should be totally protected from mouse/vermin etc.

Supply and replacement MNX-25 contactor Make : L&T or equivalent

Supply and replacement CGN - 25 contactor Make L&T/Schneider or equivqalent

M&L for Auxilary contact MNX A1 make : L&T

Supply and fix MCCB TP, 200 Amps, 36 KA front operated with rotary handle Make : L&T/Legrand.

Supply and replacement of MCCB TP 160 Amps. 36 KA front handle operated Make : L&T/Legrand.

Supply and replacement of MCCB TP 25 to 100 Amps 16 KA front handle operated Make : L&T/Legrand.

Supply and replacement of cooling tower fan 'V' belt Make : Fenner

Supply & replacement of 'V' belt for AHU blower of size B-86 suitable upto 25 TR AHU.Make : Fenner

Supply and replacement of compressor 'V' belt suitable for voltas compressor Motor B-80. Make : Fenner

Supply and fix LED indicator complete with bulb make : L&T

Supply and fix timer ET-100 Make : L&T/Schenider

Supply and fix water pressure guage 3' dia with new adapter

Supply and fix of Angle Valve 1/4" brass.

Supply and fix of LP Gauge with adapter - 30 to 150 Psi. Make : Febig or equivalent.

Supply and fix HP Gauge with adapter - 0 to 200Psi. Make : Febig or equivalent.

Supply and OP Gauge with adapter - 0 to 300Psi. Make : Febig or equivalent.

Supply and fix Liquid Line filter suitable upto 15 TR capacity.

Supply and fix Volt meter of size 4". (upto 500V) Make :-Essma or equivalent.

Supply and fix Amperemeter with suitable sizes of CT's upto 100 |Amps.

Supply and fix Over Load relay of range 9 to 13 Make : Schneider or equivalent.

Supply and fix start/stop button rotory type in Red/Green colour.

Supply and fix single phase preveneter complete all as specified

M&L for replacement of cooling PVC fills of size 600x300x15 mm thick inside cooling tower all as specified and as directed

M&L labour for taking out entire PVC cooling fills of cooling tower of any size and capacity cleaning the fills and reinstalling the same in its original position for smooth functioning of colling tower all as specified and as directed

M&L for replacement of air filters osf AHU of size 600x600mm all as specified and as directed

M&L for cleaning and preparation of old painted surface of central AC plant 52 TR 02 Nos at P-100 alongwith pipe lines including LT panel board with synthetic enamel paint over one coat of existing colour all as specified and as directed

M&L for cleaning and preparation of old painted surface of central AC plant 30 TR 02 Nos at P-15 AC plant including pipe lines, pump sets, LT panels board with synthetic enamelled paint over one coat of existing colour all as specified and as directed

Material & Labour for opening and dismantling compressor Accel make, 4/100, 3x30 TR Plant for repairing/maint and cleaning/servicing the serviceable parts, replacing gaskets, 'O' rings, spring, piston rings, oil seals, scraper reeds and minor spares and replacing the defective parts with new including flushing out entire system by providing pressure, reassembling and making perfect allignment with motor and testing the functions of the system complete all as directed. Note :Supply only parts as given under item No 43.1 to 43.7 will be measured and paid separately.

Supply of the following items for compressor Accel :-

Piston for Accel 4/100 with rings.

Connecting rod with both end bearings for accel 4/100.

Cylinder liner with 'O' ring for accel 4/100.

Shaft seal assembly complete for accel 4/100.

Gudgeon pin with circlip.

Compressor main bush bearing.

Allied gasket.

St George Engineering Works (BID ID -3123187)

National Creations (BID ID -3110626)