PREVENTIVE OR ROUTINE MAINT OF SCREW CHILLER 3 X 285 TR CAPACITY AC PLANTS INSTALLED IN INHS SANJIVANI AT NAVAL BASE KOCHI

Amount

Comprehensive maintenance and routine check up of the chiller unit, Model No 30HXC285A of capacity (2x 285 TR Working + 1 x 285 TR standby) water cooled Chilling unit installed at INHS SANJIVANI on monthly basis, comprising of the following(Higher side of AC plant),Make: Carrier screw chiller of model 30HXC285A Hermetic rotary screw compressor using R- 134 A refrigerent, flooded type shell and tube evaporator shell and tube condenser, microprocessor based control panel ,star delta/part winding starter with control microprocessor to maintain inside temp 23 ± 2 Deg C and RH 55 ± 5 %. Preventive Maintenace scope of work: i) To visit & check the operating parameters of the chillers every quarter / month as per OEM schedules. ii). To review the previous months operating log records and alarm history. iii). To inspect the unit for any unusual vibration, noise etc. iv). To carry out the cleaning of the condenser fins in case of air cooled chillers. v). To check for a sign of refrigerant leakage and rectifying the same. vi). To check the operation of the expansion valves, once a year. vii). To check the proper functioning of microprocessor and take control test. viii). To check / calibrate the flow switch for proper functioning. iX). To check the antifreeze and carrying out the setting of the same. x). To check the LP / HP cut out switches and to replace the same, if found defective. Xi). All the breakdowns including the compressor failure, if any shall be attended. Xii). To clean the electrical panel of the chiller every quarter with air blower Xiii) Rewinding of the compressor motor, if required. xiv). Repairing of the leakages except pertaining to the heat exchangers. xv). To attend to the complaints as and when called for. xvi). To provide any spare covered under the scope of AC plants

B. ANNUAL SHUTDOWN INSPECTION (Once in contract period) 1. To replace internal oil filters, as & when required during the contract period. 2. To replace refrigerant driers, as & when required during the contract period. 3. To inspect the oil quality by color and replacing the same, if required. 4. To operate the machines for 08 hours (Maximum) and adjust the controls for the optimum operation. 5. To clean all the contactors during the annual visit. Note :- 1. The comprehensive maintenance shall be done through OEM agency i.e Carrier air conditioning and Refrigeration Ltd. The Contractor shall enter into a MOU(Memorandum of understanding) for Comprehensive maintenance contract with the OEM agency for the complete Higher side Machineries of the AC Plant. 2. The above comprehensive AMC certificate shall be provided by the contractor in favour of GE(NS) before commencement of work, after acceptance of CA 2.The higher side of AC plant defects shall be get checked by OEM ( Carrier air conditioning and Refrigeration Ltd) and made serviceable in case of any defects observed during the routine check up or on call during emergency breakdown including replacement of all minor spares ,Leak detection ,pressure testing with nitrogen ,vacuumising,Labour for compressor oil charging, and testing if required complete all as specified and directed. 3. The quoted rate including repalcement/repair of any kind spares labour cost for replacement of defective spares which are excluded by OEM on Comprehensive AMC .The quantity of materials may vary and excecuted at site only on required basis. 4. Any complaints shall be attended within 24 Hrs the same day of complaint lodged by MES authority or user (INHS sanjivani) 5. Consumable items which are excluded in CAMC by OEM like (refrigerent,filters/driers,compressor oil etc) are measure and paid under relevent items as supply only.

Supply only Refrigerant Gas R 134 A in sealed cylinder complete all as specified and as directed .

Supply only Nitrogen gas in sealed cylinder comprising of 12 PSI gas 6 cum in complete all as specified and directed.

Supply only Intrenal oil filter cat part no 2001972 complete all as specified and directed

Supply only External oil filter cat part no 2000144 complete all as specified and directed

Supply only Filter drier core cat part no 2000797 complete all as specified and directed

Supply only Compressor Oil suitable for R-134 A refrigerent based 30HCX285A model screw chiller complete all as specified and as directed .

Comprehensive maintenance and routine check up of the Lower side of AC plant on Monthly basis consists of the following components:- (a) Horizontal back pull type end suction chilled water pump 50 HP with TEFC motor, bronze -impeller (2 Working & 1 Standby) (b) Horizontal back pull type end suction condenser water pump 75 HP with TEFC motor, bronze -impeller (2 Working & 1 Standby) (c) Induced Draft type 300 TR, Cooling tower of FRP ( 2 Nos working) complete with all accessories, basin , fittings, 10 HP fan motor etc (d) AHU - 18 Nos (Including replacement of defective electrical accessories of AHU,CT,Pump panel'-26 Nos) (capacity of AHUs as follows):- (i) 22000 CFM - 1 No. (ii) 20000 CFM - 1 No. (iii) 14000 CFM - 1 No. (iv) 11600 CFM - 2 Nos (v) 6200 CFM - 1 No. (vi) 14350 CFM - 1 No. (vii) 8400 CFM - 1 No. (viii) 16800 CFM - 1 No. (ix) 3500 CFM - 1 No. (x) 13600 CFM - 1 No. (xi) 3850 CFM - 1 No. (xii) 4900 CFM - 1 No. (xiii) 7200 CFM - 2 Nos (xiv) 6000 CFM - 1 Nos (xv) 8000 CFM - 2 Nos Note for Item No 08 : 1. The comprehensive maintenance contract shall be done through OEM or its authorised agency of OEM Carrier air conditioning and Refrigeration Ltd .The Contractor shall enter into a MOU(Memorandum of understanding) for Comprehensive maintenance contract with the OEM agency for the complete Lower side maintenance of the AC Plant. 2. The above comprehensive AMC certificate shall be provided by the contractor in favour of GE(NS) before commencement of work, after acceptance of CA. 3. The parts shall be genuine and from original Equipment manufacturer (OEM) and approved by GE 4. The contractor is responsible to carried out minimum one routine check up through OEM and cleaning of AHU/Rooms, cooling coil, lubrication of blower and motor (Once in a month) or as per the direction of Engr- in - charge to ensure the serviceability and proper functioning of the AC Plant in all respect ( each month will be consider as 01 Job) 5. The quoted rate including repalcement of any kind of spares and labour cost related to this item which is not catered under the subject work 6. Any Breakdown complaints shall be attended within the same day with in 24 Hrs of complaint lodged by MES authority or user (INHS sanjivani)

7. Painting of AHU motors shall be carried out once in a year. The cost required for same shall be deemed to be included in the above unit cost MONTHLY PREVENTIVE WORKS FOR COOLING TOWER a) Checking & make it Functioning of Tower starter panel. b) Checking & make it Functioning and tighten cable connection. c) Checking and cleaning of contractors. d) Checking and cleaning of CT fan terminals. e) Checking & make it Functioning and lubricate CT fan motor bearing. f) Checking & make it Functioning motor Amps. g) Checking & make it Functioning and washing tower tray and strainer. MONTHLY PREVENTIVE WORKS FOR CONDENSER PUMPS AND CHILLED WATER PUMPS a) Checking & make it Functioning and cleaning of pump starter panels. b) Checking and tighten cables. c) Checking & make it Functioning and contractors. d) Checking and cleaning of terminals. e) Checking & make it Functioning of coupling of pump and motor. f) Checking of spider bush of pump. g) Checking of water seal of pump. h) Checking of motor amps. i) Checking and lubricate of motor bearing. j) Checking and cleaning of inlet strainers of pump k) Checking alignment of motor and pump

MONTHLY PREVENTIVE WORKS FOR AHU a) Checking and servicing of AHUs. b) Checking and servicing of AHU Filters. c) Repair the components of the AHU equipment at site / Service Station. d) Checking all electrical controls and components of AHUs. e) Checking and servicing of AHU electrical Panel. f) Lubricating the bearings of AHU motor. g) Adjustment of tension and replacing of AHU blower motor belt if worn out. h) Checking and lubricate of AHU blower bearings. i) Checking & make it Functioning of blower shaft. j) Checking and cleaning of AHU blower. k) Checking & replace with new if found tear/breakng of AHU canvas connection. l) Checking of AHU blower pulley and motor pulley. m) Checking and cleaning of AHU motor terminals. n) Checking of AHU motor amps. q) Checking of AHU room temperature (return air). r) Checking of room temperature (supply air) s) Checking of thermostat. t) Checking & make it Functioning of humidistat. u) Checking of AHU heater. v) Checking and cleaning of AHU drain and try. w) Checking and washing of AHU coil with water pressure. x) Checking and cleaning of AHU in let water strainer. ANNUAL MAINTENANCE OF CHILLER CONDENSER TUBE( Once in contract period) (I) Cleaning of shell and tube condenser and chiller capacity 3 x 285 TR by chemical and mechanical process using brush after opening with sides of condensers and chillers brushing and reconnecting with suitable size of packing /gasket in same position including leak testing as per requirements and quoted rate included refixing of removed thermal insulation with new nitrile rubber /Gasket sheet

M&L for painting of central AC plant i.e 3 x chiller units completely including of 3 x chiller units completely including with chiller and condenser pipe lines appx length 200 mtr , ,all type valves,6 Nos of pumps and 2 x cooling towers,panel board,iron frames complete with two coats of synthetic enamel spray paint of existing colour after preparation of existing surface of each unit and marking set numbers ,and markers complete all as specified and directed.

Supply and fixing in replacement of PVC fills size not less than 150x200x600 mm for existing 300 TR cooling tower complete al as specified and directed.

Supply and fix in replacement of Water pressure Gauges including valve facility 0-16 bar complete al as specified and directed.

Supply and fix in replacement Actuator valve dia upto 100 mm range complete al as specified and directed.

Supply and fix in replacement Butterfly Valve 100 mm range range complete al as specified and directed.

Supply and fix in replacement Butterfly Valve above 100 mm-upto 250 mm range range complete al as specified and directed.

Taking down old unserviceable canvas from AHUs duct to pleneum/Main supply air duct including dismantle of air dampers/fire dampers and supply and fix new premium quality leather type canvas locking rivits and sealing of silcone material of any size as per existing at site complete al as specified and directed.

Dismantling/Taking down old unservicable FRP body structure of cooling tower carefully and cleaning the sump with chemical and supply and fixing of new FRP sheets as per size existing at site including all fixing material such as m seal other water resistance adhesive and make the cooling tower structure leak proof including replacement of rusted nuts and bolts complete al as specified and directed.

Dismantling/taking down old unservicable Cooling coil Capacity of upto 45 TR having AHU's,6/8 Rows,1/2" size Chilled Water type and Supply and fixing for assembling of new cooling coil as per suitable existing at site complete al as specified and directed.

Taking out old unservicable feeler bulb/temprature sensors at conditioned space of various OPD's areas and replace with new controlling flexible cable with temprature sensors for auto cutoff system at AHU"s complete all as specified ad directed. Note: Temprature sensors/cables shall be provide along flase ceiling in OPD area passages at INHS sanjivani Hospital

Supply and fixing of PVC made material having premium quality dry and wet bulb therometer complete al as specified and directed. make : Usha/dimple

Supply and fix in replacement of temprature Gauges 0-50 C along with complete valve set suitable for existing slot of chiller pipe line or any other required places complete all as specified and directed.

Taking down old unserviceable insulation over the chiller pipe line ,cleaning water pipe surface with steel brush remove dirt/ dust M&L for chilled pipe line insulation by applying a coat of zinc chromite primer and apply a two coats of cold setting adhesive compound(CRPX) on pipes for sticking the insulation bonded mineral wool of density 144 Kg/Cum, 50mm thickness tightly pressed on th pipe up to 100 mm dia seal all the joint with adhesive compound wrap the insulation surface by using one layer of polythene sheet 50mm wide pvc tape cover the entrire with chiken mesh finish the surface, of density 144 Kg/Cum and with one coat of sand and cement plaster and paint with approved color complete suitable for above insulated pipe section complete al as specified and directed.

all as per item No. 21 above , But of size of pipe above above 100 mm ,upto 250mm complete al as specified and directed.

Taking down old unsv duct insulation, cleaning the duct surface with steel brush remove dirt/dust and make it free of mill scale , greases and foreign matter.M&L for paint the surface with two coats of bituminous paint taking spl care over non galvanised part , applying rubber based adhesive CRPX compound manufacted by shaimar Tar product on ducts sticking the fiber glass section in the form of pad with the density 24 Kg/Cum shall be fixed tightly to the surface & all joints to be sealed properly by using sealing compound,cover with aluminium foil kraft paper laminate with minimum overlap of 50mm, seal each lap joint with self adhesive aluminium foil tape 50mm wide, complete all as specified and directed.

Taking down old unsv aluminium rectangular grill of size 600mmx 600mm, Supply and fixing of supply air /return air of aluminium rectangular grills complete with volume control damper, including gasket and all its connected accessories complete all as specified and directed.

Taking down old unserviceble drain pan of cooling coil from AHU box and supply and fix condensate drain pan is fabricated from 0.8 mm / 1 mm thick G.I. / SS304 wider drain pan with differential slope assures quick and complete water drainage, thus avoiding migration of moisture, which is the major cause of microbiological growth by cutting welding/ brazing all as requirement of site and complete all as specified and directed. Note: labour cost for Dismantle & Refixing of necessary connected works like AHU wall panels and cooling coil ( if required at site) shall be deemed in quoted Rate.

M & L Steel structural fabrication works fabricated from structural steel sections including nuts,cable trays,clamps bolts,washers, welding ,bending cold or hot, drilling holes for bolts, in any shape or size as indicated or directed and inclusive of one primary coat, one under coat and one finishing coat of paint complete all as specified and directed.

Material and labour for checking of existing condition of air ducts at various OPD areas at INHS sanjivani Hopspital to making the arrangement of visualization and the process at Duct connection in between plenum and brancheswith robtic camara procedures with using air compressor, various type of air nozzles for maintain standard indoor air quality,including fumigation process of disinfection for indoor air quality of AC ducts of inside complete all as specified and as directed

Supply and fixing in replacement water flow switch as suitable for chiller water pipe line as per existing at site all as specified and as directed.

General Engineering and Constructions

Green Ray Enterprises

SREENARAYANA ENTERPRISES

S. M. Enterprises

N.O. Antony Contractors

AISWARYA ENTERPRISES