CA NO CWE/CHM(U)-39/2019-20 REPAIR/MAINT OF AC PLANT 2X56 TR IN

Amount

Comprehensive maintenance of central AC plant of capacity 56 TR x 02 Nos (Chilled water and strip heater type) air cooled type installed at Manekshaw Auditorium comprising Quarterly Inspection and servicing by rep/mechanic of Blue Star Company including servicing, testing of circuit plant, programming of PCB of the plant /AHU and submit its report for serviceability. First such inspection and servicing shall be carried out within 21 days from the date of commencement of work given in work order No 01. (Replacement of parts whenever and wherever required except minor items mentioned in notes below and painting etc shall be measured and paid separately under srl item No 2 to 30). The plant includes the following:- (i) Multi stage reciprocating compressor: Model. XACYS2060R2. Make: Blue Star (Capacity 56 TR each) (Two working and one stand by) -02 Nos (ii) Electrical control panel (LT) 440 volts, 680 Amps -02 Nos.

(iii) Condenser and chiller of shell and tube type -02 Nos (iv) Condenser water pumping set of 3 phase, 44000 ltrs - 02 Nos. (v) Chilled water pumping set of 15HP, 3 phase, 440 volts-02 Nos. Make: Beacon. (vi) Paharpur induced draft cooling tower, 204 Ton, with 15 HP-01 No wheather proof, gear driven electrical motor. (vii) All other connected items of the plants/ equipments/machines mentioned in respects of sub paras (i) to (vi) above. (viii) Air handling unit, blower, evaporating coil and other sections of humidification arrangements, electrical panels etc and all other connected items - 06 Nos. (ix) Water softening unit with monoblock pump 2HP-01 No. (viii) Air handling unit, blower, evaporating coil and other sections of humidification arrangements, electrical panels etc and all other connected items - 06 Nos. (ix) Water softening unit with monoblock pump 2HP-01 No.

Notes :- Following checks and duties shall also be carried out under this item:- (a) Checking the proper functioning of all Air Conditioning plants 2X 56 TR, one stand by and AHU's. make: Blue Star. (b) Checking of the plant machinary equipment and LT panel and maintaining the record quarterly, half yearly and yearly as directed by Engineer-in-Charge/JE on a format to be decided by the Engr-in-Charge. (c) Checking the earth test record for compressor/condensor pump set, Chiller pump set, cooling tower, LT panel and AHU's and maintaining the record half yearly and submit the record there of and filling of the water in earth pit to improve the earth resistance and proper maintenance of earth pits. (d) Materials and labour (s) required for replacement of minor items such as nuts, bolts, washers, lubricants (etc) including fixing charges are deemed to be included in the item rate quoted against item No 1 of BOQ. (e) Cleaning of AHU room and MInor spares such as nuts, bolts washer, aluminium lugs grease or any spare part required for satisfactory operation of AC plant upto 2000/- other than mentioned in this CA here -in-after are deemed to be included in unit rate quoted by the contractor.

Supply and charging of Gas R-407C suitable for 56 TR chiller plant after detecting and rectification of any leakage in system by using CO2 gas and flushing the complete system with Nitrogen gas complete all as specified and directed by Engr-in-Charge. Note :- (a) Gas to be brought by contractor at site from auth dealer in company sealed cylinder of 61 Kgs. (b) The unit rate inserted shall deemed to be included the cost of CO2 and Nitrogen gas to be used for leakage test and flushing and pressure test prior to charging the gas in plant.

Supply only Gas R-22 in Company's sealed cylinder.

S&F in replacement the fan belt of AHU fan suitable for capacity 11 KW blower motor complete all as directed.

M&L for Petty Repair to chiller pump 5.5 KW such as replacement of gland packing , bearing ,seal, coupling, shaft, nut bolts washer, etc all as directed.

M&L for rewinding the chiller pump motor of capacity 5.5 KW with suitable gauge of super enamelled branded copper winding wire including heating, varnishing including taking out un-serviceable winding complete all as directed. Make : Pump/ motor - Kirloskar.

S&F and charging in replacement of expansion valve of capacity 30 TR complete all as specified and directed. Cat Part No 067N2188. Make - Danfoss or equivalent as approved by GE.

S&F in replacement dial type pressure gauge of Capacity 7 Kg/sq cm Squirel complete all as specified and directed. Make- Fiebig or equivalent as approved by GE.

S&F in replacement tempreture gauge as per existing model complete all as specified and directed. Make- Fiebig or equivalent as approved by GE.

S&F in replacement MCCB TP 415 V of capacity 250A, 35KA breaking capacity 1cs=1cu=100% with adjustable thermal & adjustable magnetic setting complete all as specified and directed.

S&F in replacement 3 pole power contactor of chiller pump AC1 rating 55A type MNX 40 complete all as specified and directed. Make - L&T cat. No. CS94190 or equivalent.

S&F in replacement 3 way mixing valve (rotary type) 80mm dia cat Part No DR 80 GFLA , VC 6013MC6000T , 6 sec. 6 VA valve actuator , 200-240 V AC 50/60 HZ. Cable 3 Way , ¾ inch lare (W/O ADPR) T 65 TS 110, IP 40 complete all as specified and directed. Make : Honeywell / Equivalent as approved by GE.

S&F in replacement, Actuator suitable for 3 way valve of cat Part No CN7234A2008 , 34Nm, 24 V AC/DC , 50/60 Hz, class 2, 110/95, sec 900 , IP 54 complete all as specified and directed. Make : Honeywell or Equivalent as approved by GE.

S&F in replacement Temperature controller Cat Part No T 2798-1-1000 complete all as specified and directed. Make : Honeywell or Equivalent as approved by GE.

S&F in replacement Fan motor suitable for 56 TR chiller complete all as specified and directed.

S&F in replacement Flow switch cat No FSW 1600 complete all as specified and directed. Make: Danfoss or equivalent as approved by GE.

S&F in replacement water temp sensor suitable for 56 TR chiller complete all as specified and directed.

S&F in replacement gun metal gate valve with iron wheel head, screwed both ends for 25mm bore pipe complete all as specified and directed.

M&L for rewinding of AHU blower motor of capacity 11 KW with suitable gauge of super enamelled branded copper wire including heating, varnishing including taking out old unserviceable winding wire complete all as directed.

M&L for Petty repair to AHU blower such as replacement of seal, coupling, shaft , bush, bearing ,nut bolts washer, adjustment of allingment , shaft etc all as directed.

S&F in replacement AHU air filter suitable for chiller plant of capacity 56 TR complete all as specified and directed.

S&F in replacement company made sealed (scroll) compressor unit of cap 18 TR of model No SY300A4PBB thermal protected with one year guarantee and commissioning complete all as specified and directed. Make: Danfoss or equivalent suitable for operating volltage 430-460 V, 60Hz as approved by GE.

S&F in replacement eliminator filter drier liquid line complete all as specified and directed. Cat pt No DCL 609S 023Z0037. Make - Danfoss or equivalent as approved by GE.

S&F in replacement 3 pole power contactor Ith =55A, i.e. AC-1=55A complete all as specified and directed. Make-ABB type code A30-30-10 CAT Part No 1SBL281001R10 or equivalent of any make mentioned in Appx 'B'.

S&F in replacement 3 pole power contactor Ith =30A, i.e. AC-1=30A complete all as specified and directed. Make-ABB type code A16-30-10 CAT Part No 1SBL181001R10 or equivalent of any make mentioned in Appx 'B'.

S&F in replacement MCB TP 32 A ,415V , having breaking capacity 10KA , 'C' characterstic all as specified and as directed. Make -ABB/ legrand /Schenider/ IndoAsian/ Havells/standard or any equivalent make mentioned in Appx 'B'.

S&F in replacement of 6 mm thick nitrile rubber insulation on condensate drain piping of size 50/40 mm dia and fitting like valve flanges union etc complete all as specified and directed. Make:- Accoflex/ Armacell/ K Flex.

Taking out defective insulation over duct and preparing surface applying adhesive and insulating the duct with external thermal insulation 13mm thick nitrile rubber open cell acoustic form including insulating the joint with aluminium type all as specified and directed at site. Make:- Accoflex/ Armacell/ K Flex/Vidoflex.

Gas welding of AC MS pipe for arresting of water leakage complete all as specified and directed.

Painting of cooling tower / Centre AC plant / Motor 56 TR after removing or old paint from surface of cooling tower and base /AC plant unit with synthetic enamelled paint after preparation of surface with spray painting complete all as specified and directed. Note - Colour of Paint as per existing on site approved by GE.

KAPOOR ENGINEERS

CHADHA ENGINEERS