REPAIR / MAINT OF AC PLANT 3X80 TR EW COMPLEX INTERLOCKING CONTROL SYSTEM PIPE INSULATION DUCTING SYSTEM CONTROL DEVICE AND OTHER CONNECTED ITEMS CONDENSER COIL, COMPRESSOR AND CONTROLLING DEVICES INCLUDING REPAIR OF COOLING TOWER AND MISCELLANEOUS W

Amount

M&L for opening of condenser cover of both sides including disconnecting of water pipe line for inlet and outlet of the condenser of each plant. Removing scale/sludge precipitated in the copper tube by push and pull method with iron rod connected with steel wire brush of suitable size as per condenser copper tube size at the entire length of condenser and scraping down the sludge precipitated inside the tube. Closing both side of condenser and circulating the descaling solution in all tubes of three condenser of each plant through the circulating pump and allow to hold it for 30 minutes for chemical reaction Opening the condenser from both sides and clean with iron rod connected with nylon brush of suitable size as per condenser copper tube size at the entire length of condenser ensure that descaling process has been complete then closing the condenser at both end and circulating clean water in all the tubes of three condenser of each plant and drain out process to continue till the satisfaction of Engr-in-Charge, then fixing new gasket for both ends of the three condensers of each plant tighten with new nut end bolt for the Ew complex AC plant 3X80 TR capacity

Removing of Alpha filter from its position and layout at site for refixing after clearing, AHU cooling coil using chemical with brass brush in-order to remove all type of sludge/dust precipitated on the coil without any damage to the copper cooling coil then wash the cooling coil with fresh water and air blower to the entire satisfaction of Engr-in-Charge. Cooling coil drain water shall be clean, if any type obstacle is there in the flow of water, iron body of the AHU inside and outside shall be scrapped down and rubbed out with sand paper then apply one coat primer over a coat of synthetic enamel paint including part of duct portion in the AHU shall be completed upto the satisfactory of Engr-in-Charge for the AHU of EW complex AC plant capacity of 3X80 TR.

Cleaning with CTC greasing with multi grade ball bearing grease of approved make i.e wax pole astral for AC plant compressor motor 100 HP-03 Nos, mono block pumping set 3 HP-02 Nos, water chiller motor 15 HP- 04 Nos, cooling tower motor 10 HP -01 No, blower motor 10 HP-03 Nos and blower shaft with two pairs of bearing -03 Nos complete all as specified and directed.

Pressure testing for entire system of the following AC plant of all three set of condenser, compressor and circulating system with CO2/Nitrogen gas and retain to allow the pressure for three days. If any leakage in found or reduction in the scale of pressure shall be located and arrest the leakage immediately by soldering or an appropriate measure are to be taken to stop the leakage permanently for the EW complex AC plant 3X80TR capacity

Dismantling the inlet & outlet connection of water pipe lines, wiremesh all-around the cooling tower, PVC fins, CT fan and motor, PVC water storage tank and incoming connection of electric supply and other related items all as per site requirement complete

Cleaning the cooling tower by applying wire brush, washing powder and other solvent by removing the deposited impurities such as silt, dust particles mud/ sand inside the dome and around the fins, on wiremesh, main shaft etc and other connected items all as specified and directed by Engineer-in-Charge.

M&L for blocking the punctured tubes of 80TR capacity condensers with brass pillet complete all as specified and directed by Engr-in-Charge.

M&L for Vacuum the system and after maintaining vacuum for 24 hours supply and charging refrigerant gas HCFC 22 complete all as specified and directed by Engr-in-Charge.

Supply and filling in replacement of compressor oil non freezing type N-68 complete all as specified and directed by Engr-in-Charge. Make : Servo/Sheetal/Caltex

M&L for rewinding of induction electric motor 10HP capacity of any make and size complete with super enameled copper winding wire of existing gauge to get same capacity of motor including varnishing and replacement of insulated material and replacement of ball bearing complete all as specified and directed by Engr-in-Charge

M&L for rewinding of induction electric motor 15HP capacity of any make and size complete with super enameled copper winding wire of existing gauge to get same capacity of motor including varnishing and replacement of insulated material and replacement of ball bearing complete all as specified and directed by Engr-in-Charge

M&L for rewinding of induction electric motor 100 HP capacity of any make and size complete with super enameled copper winding wire of existing gauge to get same capacity of motor including varnishing and replacement of insulated material and replacement of ball bearing complete all as specified and directed by Engr-in-Charge

M&L for rewinding of induction electric motor 3/2 HP capacity of any make and size complete with super enameled copper winding wire of existing gauge to get same capacity of motor including varnishing and replacement of insulated material and replacement of ball bearing complete all as specified and directed by Engr-in-Charge

M&L for repairing and servicing of mono block pump 15 HP capacity of any make and size including replacing the defective parts complete all as specified and directed by Engr-in-Charge.

All as per Srl item No 14 here-in-before but mono block pump-10 HP

All as per Srl item No 14 here-in-before but mono block pump-3 HP

S&F in replacement of power contactor rated 40 Amp current AC1 4 pole 415 volt with AC coil having pole contact composition for 4 NO (2NC+2NO), complete all as specified and directed by Engr-in-Charge. Make :- Cat part No C104004/C104008 of Indo Asian or equivalent in Siemens/L&T.

S&F in replacement of power contactor rated current 60 Amp 4 pole, 415 volt with AC coil having pole contact composition for 4 NO (2NC+2NO), complete all as specified and directed by Engr-in-Charge. Make :- Cat part No C106004/C106008 of Indo Asian or equivalent in Siemens/L&T.

S&F in replacement electronic timer on delay front mounted 0.1s to 30s (1NO+1NC), complete all as specified and directed by Engr-in-Charge. Make :- Cat part No IACF5-T2 of Indo Asian or equivalent in Siemens/L&T.

S&F in replacement of power contactor 40 Amp 3 pole, type ML-3, 415V complete with auxiliary contacts 2NO+ 2NC all as specified and directed by Engr-in-Charge. Make :- L&T cat No SS90721/ Havells/BCH

S&F in replacement of power contactor 70 Amp 3 pole, type ML-4, 415V complete with auxiliary contacts 2NO+ 2NC all as specified and directed by Engr-in-Charge. Make :- L&T cat No SS90921/ Havells/BCH

S&F in replacement of power contactor 110 Amp 3 pole, type ML-6, 415V complete with auxiliary contacts 2NO+ 2NC all as specified and directed by Engr-in-Charge. Make :- L&T cat No SS90910/ Havells/BCH/

S&F in replacement of Power contractor type MCX-45,600 Amp 4pole rated 415 V AC 1, with auxiliary contacts 2 NO + 2 NC, complete all as specified and directed by Engr-in-Charge. Make :- L&T Cat part No CS97027 or equivalent in Siemens.

M&L for digital type electronic temperature meter sensing the temperature from in side the user room and display on outside the AHU including wiring for sensing cable in case and copping, complete all as specified and directed.

M&L in replacement of motor bearing suitable for 100 HP compressor motor all as specified and directed by Engr-in-Charge

S&F in replacement fresh air ventilator made out of grill and angle iron frame with louvers on AHU without any damage to the existing wall and finishing the surfaces to match with existing one, complete all as specified and directed by Engr-in-Charge.

M&L for earthing complete with copper earth plate 600 x 600 x 3.15mm thick buried directly in ground (earth pit not less than 2.25 mtrs deep below ground level) with top edge of the plate not less than 1.5 mtr below normal ground level, connected to copper strip of size 25x3.15 mm by means of bolts, nuts check, nuts and washers including charcoal dust common salt necessary excavation in soft loose soil returning filling in and removal of surplus soil to a distance up to 50 m, PCC pit in cement concrete 1:3:6 type C1 using (20mm grade stone aggregate), precast RCC cover shall be provided in RCC 1:2:4 type B-1 (using 20mm grade stone aggregate) 40mm thick pit cover reinforced with 8mm dia TMT bars 75mm c/c both ways, MS handle 12mm dia, PGI funnel wire mesh and GI watering pipe of 20mm bore (light grade) and earth lead protection pipe 40mm bore (light grade)GI pipe for earth lead protection, including earth work complete, all as per Electrical Plate No 3, complete all as specified and directed by Engr-in-Charge. Note:- copper strip and protection pipe of 40 mm dia upto 7.5 meter length is deemed included in the rate quoted.

M&L for earth continuity conductor or copper main earthing lead fixed to wall or bottom on porcelain insulator or recess on chases or buried in ground or drawn in conduit/pipe size 25mm x 3.15 mm strip all as specified and directed

S&F porcelain insulator on angle iron frame for mounting of strip heater all as required, complete all as specified and directed by Engr-in-Charge.

Dismantling and taking down old, unservicable PVC eliminator and PVC fins (honey comb) from colling tower of capacity 3x 80 TR complete.

M&L PVC eliminator from colling tower of capacity 3x80 TR complete all as specified and directed by Engr-in-Charge.

M&L PVC fins (honey comb) from colling tower of capacity 3x80 TR complete all as specified and directed by Engr-in-Charge.

S&F in replacement sluice valve of size 150 mm dia flanged of class 1.6 PN having brass/SS spindle with check nut and iron wheel on top of the valve with duly ISI marked tested, complete all as specified and directed by Engr-in-Charge. Make :- Kirloskar/Kartar/Audco.

All as per item No. 33 here-in-before but of size 100mm dia, complete all as specified and directed by Engr-in-Charge. Make :- Kirloskar/Kartar/Audco

All as per item No. 33 here-in-before but of size 80mm dia, complete all as specified and directed by Engr-in-Charge. Make :- Kirloskar/Kartar/Audco

S&F in replacement 150 mm butterfly valve IS 13095 Short pattern PN 1.6 Class-125 duly lSI marked EPDM rubber lining seal, stainless steel disc including changing holding coil etc complete all as specified and directed by Engr-in-Charge. Make :- Kirloskar/Kartar/Veson

All as per item No. 36 here-in-above but size 100mm dia, complete all as specified and directed by Engr-in-Charge. Make :- Kirloskar/Kartar/Veson

All as per item No. 36 here-in-above but size 80mm dia, complete all as specified and directed by Engr-in-Charge. Make :- Kirloskar/Kartar/Veson

S&F in replacement stop cock screwed type of size 20 mm dia, complete all as specified & directed by Engr-in-Charge

All as per Srl item No 39 here-in-before but of size 40 mm dia, complete all as specified & directed by Engr-in-Charge

M&L for duct insulation 50 mm thick with resin bonded fibre glass wool roll of density 24 Kg/Cum, with factory laminated aluminium vapour barrier, thickness of insulation as specified and including the following:- (a) M&L for cleaning the duct surface (to be insulated) by scrapping carefully with wire brush etc to make the surface completely free of millscale, dirt, fust, grease and the foreign materials, taking special care so that all duct joint are sealed against any leakage. (b) M&L for applying rubber based adhesive CPRX compound. (c) M&L for sealing of all longitudinal joints and circular overlaps with and including aluminium foil tape 50mm wide to make the insulation leak proof. (d) M&L for securing the insulation with and including mechanically fastened nyln/steel straps of size 12mm/50mm at maximum intervals of 1.2 mtr

S&F single phase preventer 230 Volts. Make -L&T/IMP

S&F Solenoid valve 1/4''dia 240 volt all as specified and directed

S&F sensor for chiller plant 240 Volts

S&F water temp pressure gauge 0-150 PSI 6'' dia all as specified and directed.

S&F water temp pressure gauge 0-150 PSI 3'' dia all as specified and directed.

S&F thermometer 0-100 C complete all as specified and directed

S&F water pressure gauge 0-150 PSI 4'' dia with cyfens and ball valve complete all as specified and directed.

S&F HRC fuse 200 Amp complete all as specified and directed

S&F MCB SP 63 Amp 240 volts make Hager/Havell,s/legrand all as specified and directed.

S&F and testing complete PCB card suitable for 80 TR capacity of AC plants all as specified and directed

S&F Ammeter digital squire flush & CT type with CT's and Rotary switch including necessary addition/ alternation of panel including cutting/welding of front side of panel board /feeder to match the existing panel board/feeder taking out of unserviceable one (L&T)/AE

S&F Expansion valve suitable for 80 TR capacity of AC plants all as specified and directed

S&F Alpha filter off size (as per sample) in AHU of capacity 80 TR all as specified and directed.

Dismantling the AHU of capacity 80 TR plant of front filter side removing the coil assembly and filters from AHU and setting aside for reuse and replacement of the base of AHU with angle iron 50x50x6mm and using a MS sheet 16 SWG including addition/alteration, welding and fixing the coil assembly at the same complete testing all as specified and directed.

Repairing and testing of AC compressor make Voltas of capacity 80 TR AC plants, comprising of dismantling replacement of unserviceable components (material and labour for replacement of parts shall be measured and paid separately) including, metaling grinding, polishing and refixing nuts, bolts, washers, gasket assembling the compressor testing on load complete all as specified and directed.

Supply and replacement in repair under mentioned spare parts for AC plants for maintenance of repair to compressor make Voltas of capacity 80 TR .

Connecting rod

Cylinder liner

Piston

Piston ring

Gajan pin

Section plates

Section read and discharge read

Oil pump

Loder assembly

Gasket sets complete

Tyre coupling with lock

Oil filter

Spring section

Spring ducting

Oil seal

Main bearing

Spray painting to AC plants of capacity 3x80 TR of following accessories like as compressors, condensers, pumps, motors, panels and pipes with two coat of synthetic enamel high glow paint Ist grade make Berger after preparation/cleaning of surfaces including write down the MES NO/SM NO complete as specified and directed by engr in charge .

Detecting the fault of LT panel board of AC plants of in EW complex by providing skilled tradesman & helper with necessary safety and working equipment such as multimeter, speedometer and other required tools and rectified the defects on top priority basis including replacement of copper wiring of existing size cable and testing of interlocking system complete all as specified and directed

Taking out unservicable MCCB s of any type any capacity by disconnection all electrical connection from paneal board / wall /FPB all as directed at site.

Supply and fixing MCCBs including necessary fitting arrangement and testing complete of following size.

200 Amps 4 Pole bracking capacity 36 KA

250 Amps 4 Pole bracking capacity 36 KA

400 Amps 4 Pole bracking capacity 36 KA

600 Amps 4 Pole bracking capacity 50 KA

DP Traders

Shiv Enterprises

J.P. Enterprises

Saini Enterprises