CA NO CWE/PM/SP-28/2020-21 COMPREHENSIVE MAINTENANCE OF CENTRAL AC PLANTS AT HQ WAC AREA OF AGE E/M-II UNDER GE (AF) SUBROTO PARK DELHI CANTT-10

Amount

M&L for servicing of AHU 20000 CFM installed at OPs room comprising of cleaning the air filter/coil, cleaning of fresh air duct/grill with chemical followed with pressurised water jet, greasing of AHU motor, tightening of belts, checking the functioning of 3 way motorised mixing valve, tightening of all nut/bolts for noiseless operation of AHU shall be carried once in each month till date of completion as mentioned in Work Order No.1/extended date of completion complete, all as specified and directed by the Engineer-in-Charge. Note: Servicing shall be carried during the commencement of contract and after sixth month from first servicing as mentioned in Work Order No. 1/extended date of completion. rate of the same shall be deemed inclusive in rate quoted for BOQ. Nothing extra shall be paid on this account.

M&L for servicing to condensor (3 Nos) of 3 x 25 TR AC plant installed at OPs Room including opening the end plates, carrying out the descaling with descaling compound and pull through with nylon brush in each tubes, cleaning thoroughly with water, refixing the end plates to its existing position to ensure leak proof area complete, all as specified and directed by the Engineer-in-Charge. Note: Servicing shall be carried during the commencement of contract and after sixth month from first servicing as mentioned in Work Order No. 1/extended date of completion. Rate of the same shall be deemed inclusive in rate quoted for BOQ. Nothing extra shall be paid on this account.

M&L for servicing FRP type cooling tower of capacity 50 TR including cleaning of sump, circulation of descaling compound, checking the smooth operation of CT fan, distribution arms and fan guard for noise free operation complete, all as specified and directed by the Engineer-in-Charge. Note: Servicing shall be carried during the commencement of contract and after sixth month from first servicing as mentioned in Work Order No. 1/extended date of completion. rate of the same shall be deemed inclusive in rate quoted for BOQ. Nothing extra shall be paid on this account.

M&L for repair to suction & discharge valve of compressor 3x25 TR of capacity by means of replacing the teflon washer sheet, suction & discharge valve ring, spring, 'O' rings, gaskets etc complete and testing for proper holding of valve, leak testing etc complete, all as specified and directed by the Engineer-in-Charge. Note: The rate inclusive of suction & discharge valve which is considered as one job.

S&F in replacement of panel air filters, dry type, washable, rated air flow capacity 1600 CFM, 99.9%, down to particle 20 micron of suitable sizes or nearest for AHU of central AC plant complete, all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of liquid line Y strainer for AHU 20000 CFM including welding, leak testing and leak arrest complete, all as specified and as directed by the Engineer-in-Charge.

M & L for Preparation of old painted surfaces and applying two coats of synthetic enamel paint to external surfaces to compressor with motors - 03 No's, foundation of compressor & motor units- 03 No's, suction & discharge refrigerent pipe line, condenser water pump with motor & foundation - 02 No's, water pipe line, AHU unit and motor/blower- 01 No, condenser - 03 No's of any capacity of central AC plant at 3x25 TR AC plant complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable suction pressure gauge, having range minus 30 to 150 PSI of dia 4" complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable oil pressure gauge having range 0 to 150 PSI of dia 4" complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable 3 pole power contactor ML-1 complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable 3 pole power contactor ML-1.5 complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable 3 pole power contactor ML-2 complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable 3 pole power contactor ML-3 complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable timer unit ET-100, 0-60 sec complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable Single phase preventor (Auto reset, 40 Volts unbalanced) VSP-2 complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable thermal overload relay 6-10 Amps as per existing make complete all as specified and as directed by the Engineer-in-Charge.

All as per item No 16.00 here in before but 10-16 Amps.

All as per item No 16.00 here in before but 20-32 Amps.

S&F in replacement of unserviceable overload relay 25 Amps complete all as specified and as directed by the Engineer-in-Charge.

All as per item No 19.00 here in before but 25-40 Amps.

S&F in replacement of unserviceable water pressure gauge having pressure range 0-150 PSI, 4" dia dial type complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable Thermometer industrial type complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable contactor MNX-12 2 pole with thermal magnetic release and 1 NO complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable add on contacts MNX A2 with 1 NO+NC complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of unserviceable add on contacts MNX A1 with NO+NC complete all as specified and as directed by the Engineer-in-Charge.

M&L for insulation to chilled water piping with 12 mm thick rubber nitril with Aluminium foil of density 30 Kg/Cum for 65 mm Chilled water pipe complete with rubber based adhesive Pidlite SR 998/equivalent and thermal conductivity not exceeding 0.0035 W/Mk at an average temp of 40 Degree C complete all as specified and as directed by the Engineer-in-Charge.

M&L for insulation to chilled water piping of central AC plant of following sizes with 19 mm thick (for all pipes) and 13 mm thick (for drain pipes closed cell chemically cross linked fire retardant polyethelene foam insulation of density 30 Kg/Cum. The thermal conductivity of the material should not excceed 0.035 W/Mk at an average temp of 40 deg C, covered with aluminium faced foil complete with application with rubber based adhesive pidilite SR 998 and 50 mm X 3 mm thick self adhesive tape on both longitudinal & transverse joints simultaneously complete all as specified and as directed by the Engineer-in-Charge.

80 mm dia chilled water pipe including valves, strainers etc.

65 mm dia chilled water pipe including valves, strainers etc.

50 mm dia drain pipe.

M&L for insulation to HDPE expansion tank of size 1000 Ltr of central AC Plant with suitable FR-XLPE/XPE of thickness 19 mm, minimum bulk density 28/-4 Kg/Cum covered with vapour barrier and finished with 0.5 mm thick aluminium cladding and application with rubber based adhesive pidilite SR 998 and 50 mm X 3 mm thick self adhesive tape on joints complete all as specified and as directed by the Engineer-in-Charge.

M&L for repair to 3 phase monoblock water pump set of capacity 7.5 HP including rewinding in replacement of bearings, seal, cleaning of parts and carry out necessary inspection for wornout parts, replacement of old unserviceable worn out parts and refixing the unit to its existing location after completion of overhauling/repair complete all as specified and as directed by the Engineer-in-Charge.

M&L for taking out unserviceable squirel case motor and rewinding squirel case motor of mono block pump set model KDS-527 of capacity 5 HP 3 phase with super enamelled copper winding wire and replacement of bearing and minor spare parts like as keys, bushes etc and testing after rewinding and refixing to its existing location after rewinding complete all as specified and as directed by the Engineer-in-Charge.

M&L for painting LT Panel installed for central AC plants at WAC Ops room as per existing colour code with one coat of synthetic enamel paint with the help of spray gun after cleaning and preparation of surfaces complete all as specified and as directed by the Engineer-in-Charge.

M&L for painting Servo Voltage stablizer of capacity 200 KVA as per existing colour code with one coat of synthetic enamel paint with the help of spray gun after cleaning and preparation of surfaces including writing SM/MES No with white letters on black back ground complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of scroll compressor of capacity 12.5 TR with washers, bolts and nuts three phase 415 V 50 Hz suitable for central AC plant including brazing leak test of the system with compressed nitrogen and testing the unit for satisfactory functioning complete all as specified and as directed by the Engineer-in-Charge.

Taking out unserviceable AHU motor and rewinding AHU motor 12.5 HP 3 phase 415 V with copper winding wire including insulation, thimbles, greasing & replacement of minor spare parts such as keys, bushes etc and testing after rewinding and refixing to its existing location after rewinding of central AC plant at WAC Ops room of capacity 60 TR all as specified and directed by Engr-in-Charge.

Taking out unserviceable CT motor 5 HP suitable for central AC plant of cap 3x 25 TR and rewinding with super enamelled copper winding wire including replacement of bearings and testing after rewinding and refixing to its existing location complete, all as specified and as directed by the Engineer-in-Charge.

Supply only refrigeration gas R 407C in manufacturer sealed cylinder including pressure testing the complete plant by dry nitrogen gas by separating high side and low side, rectifying the leakage by gas welding brazing pressure testing vaccuming the system and re-charging the system with gas, testing and commissioning complete. NOTE:- (i) Gas to be supplied in manufacturer sealed container. (ii) Empty containers will be returned to contractor .

Supply & filling transformer oil in servo stabilizer of capacity 200 KVA complete all as specified and as directed by the Engineer-in-Charge.

Supply, installation, testing and commissioning in replacement electric strip heater in replacement of unserviceable one for winter heating and mansoon reheating with finned type heaters of cap 3 KW including end terminations complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of PVC fills as per existing model and size heavy duty for forced draught type cooling tower of central AC plant complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of GI tubing 15 mm dia medium grade with all fittings complete laid in trenches/on wall/on ceiling/roof etc including necessary suitable size of MS clamps/saddling on walls etc complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of GI tubing 20 mm dia medium grade with all fittings complete laid in trenches/on wall/on ceiling/roof etc including necessary suitable size of MS clamps/saddling on walls etc complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of GI tubing 50 mm dia medium grade with all fittings complete laid in trenches/on wall/on ceiling/roof etc including necessary suitable size of MS clamps/saddling on walls etc complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of GI tubing 65 mm dia medium grade ith all fittings complete laid in trenches/on wall/on ceiling/roof etc including necessary suitable size of MS clamps/saddling on walls etc complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of GI tubing 80 mm dia medium grade with all fittings complete laid in trenches/on wall/on ceiling/roof etc including necessary suitable size of MS clamps/saddling on walls etc complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of discharge saftey valve of same make as compressor on site with checking of leak testing complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of 6 Sqmm copper Control Cable ,3 core for AHU motor including connection from panel to Motor complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of Oil HP cut out Type MP - 5 suitable for R 407C gas complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of GAS LP/HP combination cut out MP - 15 Suitable for R 407C gas complete with flare nut complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of solenoid pilot control valve type 10 with two/three coil assembly of same model complete all as specified and as directed by the Engineer-in-Charge. .

S&F in replacement of gate valve suitable for 50 mm dia GI pipe complete all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of earth leakage relay suitable for 3x25TR compressor motor starter complete, all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of ammeter with ratio of 100/5 Amps complete, all as specified and as directed by the Engineer-in-Charge.

S&F in replacement of voltmeter 0-500 V AC supply 50 Hz & complete, all as specified and as directed by the Engineer-in-Charge.

S&F electrical wiring of panel with suitable 1.5 Sq.mm/2.5 Sqmm (nominal area) PVC unsheathed multi stranded copper conductor PVC insulated 1100 Volt FRLS grade single core cable, testing and commisioning of complete power system including taking down and refixing of serviceable conductor, timer, overload relay, earth leakage relay, MCCB, servicing of starter etc. satisfactory operation of the AC plant of capacity 3x25 TR complete all as specified and directecd by Engineer-in-Charge. Note:- Additional spare parts will be measured and paid separately.

Supply, assemble and erection of GI Sheet with TDF flange rectangular/square duct made out of 'L' shaped hollow profile, duly factory boxed including all accessories such as supply air and return air diffuser, corner, cleat, carrage bolt, gasket and appropriate sealent on longitudinal joints etc complete of size 18 Gauge complete all as specified and as directed by the Engineer-in-Charge.

M&L for duct insulation with resin bonded fibre glass wool roll of density 24 kg/Cum, with factory laminated aluminium vapour barrier, thickness of insulation 40mm as specified and including the following:- (a) Cleaning the duct surface (to be insulated) by scrapping carefully with wire brush etc. to make the surface completely free of millscale, dirt, dust, grease and other foreign materials, taking special care so that all duct joints are sealed against any leakage. (b) Applying rubber based adhesive CPRX compound. (c) Sealing of all longitudinal joints and circular overlaps with and including Aluminium foil tape 50 mm wide, to make the insulation leakproof. (d) Securing the insulation with and including mechanically fastened nylon.

Saini Enterprises