COMPREHENSIVE REPAIR AND MAINTENANCE TO PACKAGE TYPE AC AND AC PLANTS UNDER AGE (E/M) OF GE (EAST) JABALPUR

Amount

Taking out /disconnecting and refixing after descaling of sluice valves and condensers for descaling and plugging it & providing 15mm 'T' outlet for local circulation of descaling solution(Mac) in the condenser ( separate container and small pump set to circulate diluted acid solution to be used ) correct pH value of solution to be circulated and it should be checked every hour during the operation, scales on water solution (as approved by GE) to be used for descaling purpose after 2 to 3 hours of cleaning , if pH-value remains less than 7, clean water to be added in the sodium carbonate , tubes to be cleaned with nylon brush and closing the end covers after circulated diluted acid solution as specified as above and pH value to be maintained and flushing the same with fresh water including cleaning of cooling tower and all the sluice valves with lines in the system with diluted acid, recharging of stored refrigerant up to required pressure complete all as specified and directed ,for the followings :

Complete AC Plant 3 X 12 TR Capacity

Complete AC Plant 2 x 17.5 TR capacity

Complete AC Plant 2 x 35 TR capacity

Taking down and refix after rewinding of monoblock pump motor of following capacity , 3 phase , 50Hz with super enameled copper winding wire , including replacement of unserviceable accessories i.e bushes , impellers , locking key and nuts , washers etc to mono block pump including transportation of pump and motor for repair complete all as specified and directed by Engr-in-Charge:-

Mono block pump with motor complete set capacity 5.0 HP

Mono block pump with motor complete set capacity 7.5 HP

Taking down and refix after rewinding of AHU/CT Fan motor of following capacity, 3 phase , 50 Hz with super enameled copper winding wire , including replacement of unserviceable accessories i.e. bearing,nuts , washers etc and also including transportation of motor for repair complete all as specified and directed by Engr-in-Charge:-

Motor capacity 5.0 HP

Motor capacity 7.5 HP

Supply and fix, in replacement, AHU / BLOWER’S pedestal bearing complete all as specified and directed.

S & F, in replacement, thermostatic expansion valves suitable for upto 80 TR Central AC Plant, complete all as specified and directed.

M & L, in replacement, brass liquid line valve 25 mm PS25, complete all as specified and directed.

S&F, in replacement, digital electronic type temperature meter with RH arrangement range of approx '0' degree centigrade to '50' degree centigrade complete all as specified and directed.

M &L, in replacement, water thermometer in range of approx '0' degree centigrade to '50' degree centigrade complete all as specified and directed.

S&F, in replacement, safety control valve ( pressure relief type ) size approx. "3/8“ at condenser unit, complete all as specified and directed.

S&F, in replacement, safety control valve ( pressure relief type ) size approx. "½" at condenser unit, complete all as specified and directed.

M& L, in replacement, water pressure gauge of capacity approx 14 kg/cm2 complete all as specified and directed.

M & L, in repair, LT electric control panel board, cleaning inside with blower, servicing, tightening all electrical connections/ contact points,replacing defective locking clips, thimble and making it serviceable with interlocking wiring including replacement of defective parts and refixing back in its existing position complete all as specified and directed. (Note:-spares / accessories of main electric control panel are measured and paid for separately under relavant items of this schedule.)

S&F, in replacement, MCB TP 32 Amps ,3 Phase,415 Volt,50Hz, 'C' curve, rupturing capacity 10 KA complete all as specified and directed.

S&F, in replacement, contactors type ML2/ML1.5/ML.1.0, complete all as specified and directed.

S&F, in replacement, contactors type ML3, complete all as specified and directed.

S&F, in replacement, ML 2/ML 3 relay, range 28-42 A /20-32 A, complete all as specified and directed.

S&F, in replacement, ML 1.5 /ML1.0 relays, range 14-16/4-6.5 A, complete all as specified and directed.

S&F, in replacement, electronic timers / GT-100 /MPR -500/SPP 240/360/415V, 50Hz range 3-10,9-30 , 30 -120 sec,complete all as specified and directed.

S&F, in replacement, Volt meter / Ampere meter as per existing one at site, approx CT ratio-100/5 & 30/5 , complete all as specified and directed.

S&F, in replacement, toggle switch 16Amp, complete all as specified and directed.

S&F, in replacement, indicator lamp (green, red, yellow) 220V, 50Hz, , complete all as specified and directed.

S&F, in replacement, ON/OFF push button , complete all as specified and directed.

S&F, in replacement, shaft seal assembly with complete accessories for SMC-4-65, complete all as specified and directed.

S&F, in replacement, shaft seal assembly with complete accessories for SMC-4-100, complete all as specified and directed.

S&F, in replacement, shaft seal assembly with complete accessories suitable for 20 TR-35 TR capacity of compressor , complete all as specified and directed.

M & L, in replacement, HP/LP cut out, complete all as specified and directed.

M&L, in replacement, op cut out, complete all as specified and directed.

M&L, in replacement, solenoid valve (capacity control valve) suitable for upto 80 TR Central/Package type AC Plant, complete all as specified and directed.

M&L, in replacement, high pressure gauge/low pressure gauge/Oil pressure gauge for refrigeration system used refrigerant as R-22/F-22(pressure range approx 0-300 lb/sq inch ) complete all as specified and directed.

M&L, in replacement, chocked PVC fills/ Honey comb of cooling tower as per existing size for upto 80 TR capacity cooling tower of AC plant complete all as specified and directed.

S&F, in replacement, float valve with brass stop cock in cooling towers water make up tanks as per existing size at site, 1/2", 1/4", 1” including necessary suitable water supply fittings ie. Socket, nipple, reducer etc. complete all as specified and directed.

S&F, in replacement, FRP Eliminator sutaible for upto 80 TR AC Plant cooling tower of different size complete all as specified and directed.

Taking down 5 HP to 40 HP motor with isolating rotor & stator,cleaning & greasing of the exiting bearing & re-assembling of complete motor & fixing at the same position complete all as specified and directed.

M & L for cleaning,scrubbing & painting of complete central/package type AC PLANT (Capacity 2 X 17.5 TR) with one coat of synthetic enamel paint in existing/approved colour code including pumps ,motors, startors, LT panel board,fan blower,compressor,pipe line, condenser etc complete all as specified and directed.

Supply and filling, in replacement, compressor oil complete all as specified and directed.

S&F, in replacment, V Belt for AC plant size B-76/A 50/C 102/B 38/B 87 etc. complete all as specified and directed .

M&L for R-22 Refrigerant gas charging, and also for vacuum and pressure leakage testing with nitrogen gas(N2) , complete all as specified and directed. ( Note : Cost of Vacuum and pressure leakage testing with nitrogen gas(N2) is deemed to be included in the unit rate quoted by the contractor against this item.)

Supply & fix, in repairs, ball bearing (set of two) suitable for capacity of 3 HP electric motor/ mono block motor complete all as specified and as directed.

Description all as per item No. 39.00 above but of capacity 5.0 HP.

Description all as per item No. 39.00 above but of capacity 7.5 HP.

Description all as per item No. 39.00 above but of capacity 10.0 HP.

Description all as per item No. 39.00 above but of capacity 12.5 HP.

Description all as per item No. 39.00 above but of capacity 15.0 HP.

Supply only MCB TP,'C' series 25 to 63 Amps, 410 Volts, 50 HZ, 10 KA for panel board to be fixed under respective items complete all as specified and directed.

Supply only connector 4 pole, 240 volts for panel board to be fixed under respective items complete all as specified and directed.

Supply only CR bearing of existing make suitable for compresseor of capacity SMC 3 X 65 series to be fixed under respective items here-in-above, complete all as specified and directed.

S & F, in repairs, strips heater 2/3 KW single phase complete all as specified & directed.

Dismantling crank shaft of compresseor of capacity SMC 4 X 65 series and supply & fixing new crank shaft of existing make and refixing the compressor in its original position and checking leakage by Nitrogen gas and stoping the leakage by fixing required parts complete all as specified and directed.

supply & fix, in repairs, automatic phase sequence corrector of rating 20.0 to 50.0 HP, RPC- 30 type complete all as specified and directed.

Supply & fix, in repairs, Neoprene 'O' ring of AC plant of capacity SMC 3x65 series of existing make complete all as specified and directed.

Supply & fix, in repairs, cooling tower fan motor of capacity up to 5.0 HP, 3 Phase, 1440 RPM with extended shaft ,complete all as specified and directed.

Supply & fix, in repairs, cooling tower monoblock pumping set complete with motor of capacity upto 3.0 HP, 3 Phase, 1440 RPM with extended shaft having minimum 22.0 Metre head complete all as specified and directed.

Supply & fix, in repairs, thermostatic expansion valve, flange type, of size suitable for 3 x 70.0 TR AC Plant (R-22) including making all necessary connections complete all as specified and directed.

Supply & fixing, in repairs, PVC coated wiremesh net water protection cover for protection from birds, leaf etc to cooling tower tank complete all as specified and directed.

Supply and fixing, in replacement, PCB complete sutaible for package type 11 TR AC Plant complete all as specified & as directed.

Supply and fixing, in replacement, PCB complete sutaible for package type 17 TR AC Plant complete all as specified & as directed.

Supply and fixing, in replacement, PCB complete sutaible for package type 22 TR AC Plant complete all as specified & as directed.

Supply and fixing, in replacement, liquidline filter drier MWP 500-900 PSIG complete all as specified and directed.

Supply and fixing, in replacement, compressor of capacity 5.5 TR complete suitable for package type 11 TR AC Plant complete all as specified & as directed.

Supply and fixing, in replacement, compressor of capacity 8.5 TR complete suitable for package type 17 TR AC Plant complete all as specified & as directed.

Supply and fixing, in replacement, compressor of capacity 11 TR complete suitable for package type 22 TR AC Plant complete all as specified & as directed.

Supply and Fix condensor fan motor 0.5 HP, 230 V, 50 Hz suitable for any package type AC Plant (11TR/17TR/22TR) complete all as specified and as directed

Supply and Fix condensor fan blade suitable for any package type AC Plant (11TR/17TR/22TR) complete all as specified and as directed

Supply, installation and testing, in replacement, cooling coil suitable for SMC - 3-65 type ACCEL compressor AHU unit upto 20 TR complete all as specified and as directed.

S&F, in replacement, butterfly valve conforming to IS 13095, 80 mm dia complete all as specified and as directed.

S&F, in replacement, non return valve 80mm dia CI both ends flanged conforming to IS, complete all as specified and as directed.

S&F, in replacement, 80 mm C.I. Y Type Strainer conforming to IS, Flanged End, complete all as specified and directed.

S&F, in replacement, 80 mm GI pipe heavy grade conforming to IS Flanged End complete all as specified and as directed.

S&F auto cut-off electronic thermostat with adjustable temperature controller of Brass, working temp 0-700 Centrigrade , 15 Amp current, 220-240V, 50 Hz, of size 5 inch, shock proof suitable for 2/3 KW strip heaters installed in AHU/return ducts duly connected with glass insulated copper wire including connections from input source to strip heaters complete all as specified and directed.

M&L for cross arm bracing supports, clamps and back plate, fabricated from structural steel section including nuts, bolts in any type and shape and size as indicated or directed and including application of two coat of aluminium paints over a coat of red oxide primer complete all as specified and as directed.

S&F, in replacement, copper pipe of size, 7/8 inch(i.e 0.875"), complete all as specified and as directed.

S&F, in replacement, copper Elbow of size, 7/8 inch(i.e 0.875"), complete all as specified and as directed.

S&F, in replacement, copper Socket of size, 7/8 inch(i.e 0.875"), complete all as specified and as directed.

S&F, in replacement, Hand set Valve of size, 5/8 inch(i.e 0.625"), complete all as specified and as directed.

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 as specified and including the followings :- (a) Cleaning the duct surface (to be insulated ) by scrapping carefully with wire brush etc., to make the surface completely free of mill scale, 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/ steel straps of size 12 mm/50 mm at maximum intervals of 1.2 mtr of size 25 mm."

Supply , assembly and erection of GI sheet with C & SS rectangular/square duct, made of 'L' shaped hollow profile, duly factory boxed, including all accessories such as Corner, Cleat, Carriage bolt,Gasket and appropriate sealant on longitudinal joints etc of thickness 26 Gauge complete all as specified and directed.

Material and Labour for complete leak testing after pumping down refrigerant in empty cylinder (for reuse) of the AC plant of 20 TR to 80TR capacity, chiller / direct expansion type and rectify the leaks in the joints valves, gauge board, compressor gas & oil connections and pressure testing the system with Nitrogen gas, and holding the pressure for 48 Hrs. check for any drop, vacuumising the system as per the standard and recharging the gas, testing & commissioning the plant complete all as specified and directed. (Note: All T&P and accessories will be arranged by contractor on his own arrangements and cost thereto is deemed to be included in the unit rate quoted by the contractor against this item.)

Material and Labour for complete leak testing after pumping down refrigerant in empty cylinder (for reuse) of the Package Type AC plant of 11 TR to 22 TR capacity and rectify the leaks in the joints, valves, all gas pipe tubings, compressor and pressure testing the system with Nitrogen gas, and holding the pressure for 48 Hrs. check for any drop, vacuumising the system as per the standard and recharging the gas, testing & commissioning the plant complete all as specified and directed. (Note: All T&P and accessories will be arranged by contractor on his own arrangements and cost thereto is deemed to be included in the unit rate quoted by the contractor against this item.)

Schedule of credit amount of Rs 54,923.00 to be deducted during AOC

New Era Engineers (BID ID -3148000)