Comprehensive Maintenance of various Capacity Air Conditioners installed at various sites DTTE Pitampura, Division, Sub Division office PWD, Delhi.

Comprehensive routine maintenance of Window / Split type ACs units of 1.0 / 1.5 / 2.0 TR capacity units of different makes installed at various locations as per inventory attached, i/c repairing / replacement of remote, capacitor running type, all types of defective parts,gun metal taps,electronic parts ,float valve assembly excluding topping up of refrigerant in compressor, refrigeration pipe, PCB for indoor/outdoor complete as per terms and conditions, and timing as per direction of Engineer -in- charge & wherever reqd. (Note:- i) During the period of Summer Season & duration as specified by the Engineer-in-Charge ii) Maintaining of Complaints will be recorded by the agency in the AC Task/Complaint register) (115 Units X 8 Months = 920 Units)

Complete servicing of WTAC/STAC/unit of 1/1.5 / 2.0 TR capacity including dismantling the AC from its existing position at various locations/grill/window cutting,washing with High pressure water spray electric machine,coil cleaning with D- Scaling Chemical, drying with air blower ,oiling, greasing of blower, fans. cleaning of evaporative and condensing coil with suitable chemical like coil cleaner, as required in its existing position complete etc. as required.

Replacement of printed circuit assembly (PCB) of the Existing indoor Unit Split/WTAC AC 1.5/2.0 TR Complete with connection & Testing etc. as required at side in the machine as per requirement & approval of the Engineer-in-Charge. (Dismantled material shall be retained by the contractor)

Replacement of printed circuit assembly (PCB) of the Existing Outdoor Unit Split AC/WTAC 1.5/2.0 TR with connection & Testing etc. as required at side in the machine as per requirement & approval of the Engineer-in-Charge. (Dismantled material shall be retained by the contractor)

Repairing of PCB card of 1.5/2 TR capacity WTAC/split type AC unit having following capacity after dismantaling the defective card from AC unit & refixing the same i/c connections of electrical wires/cables & thimbles connection, testing & commissioning etc. complete as required.

Supplying & charging of Refrigerant gas (R-22/32 as per requirement of AC unit) in the following type capacity AC units i/c leakage testing removing the leakage, pressure testing, flushing the complete system, vacuumising and gas charging complete as required. (Cost for gas & labour charges already included in the below mentioned item) (Note:- Quantity of gas filled shall be entered in Consumption Register maintained by the agency) a) In 1.5 TR WTAC/STAC capacity

b) In 2.0 TR WTAC/STAC capacity

Dismantling of existing suitable 1.5 TR/2.0 TR capacity WTAC unit & both indoor & outdoor in case of STAC etc. with equipments complete as reqd.

Re-installation of WTAC unit in the existing window i/c modification in the window, sealing the gap with ply etc. as required at site of work.

Supplying and replacement of following parts including removal of un-serveceable part, electrical connections & re-installation the same, testing, commissioning etc. as required. (Labour & gas charges already included in below mentioned item.) a) Rotary Compressor 1.5 Ton including less for old credit

b) Rotary Compressor 2 Ton

c) Reciprocating compressor 1.5 Ton including less for old credit

d) Reciprocating compressor 2.0 Ton

e) Outdoor fan motor 1.5 Ton including less for old credit

f) Out door fan motor 2 Ton

g) Indoor fan motor 1.5 Ton including less for old credit

h) Window AC fan motor including less for old credit

i) Cooling coil copper - 1.5 Ton for WTAC/STAC including less for old credit

j) Condenser coil copper- 1.5/2.00 ton for WTAC/STAC including less for old credit

Supplying & fixing suitable size GI box wih modular plate and cover in front on surface or in recess including providing and fixing 25 A modular socket outlet and 25 A modular SP MCB, “C” curve including connections, painting etc. as required.

Supply, Installation, testing and commissioning including vaccumiazation and Nitrogen testing of following nominal sizes of soft/hard drawn copper refrigerant piping for VRV/VRF system, complete with fittings, with suitable adjustable ring type hanger supports, jointing/brazing including accessories, insulated with XPLE Class-O tubular insulation/with Class-O closed cell elastometric nitrile rubber tubular sleeves sections of 19 mm thick insulation as given below for Suction and Liquid lines, all accessories as per specifications etc. as required :. a) 6.4 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm

b) 9.5 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm

c) 12.7 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm

d) 15.86 mm dia (OD) (Soft drawn) with tube thickness 1.2 mm

Supplying of following accessories for the existing 1.5 TR/ 2 TR. capacity WTAC / STAC unit, using existing man power for replacement on day to day maintenance work Credit back to Contractor: a) 15 Amp 3 Pin plug Top (ISI Marked)

b) 3 core PVC insulated PVC sheathed copper wire 2.5 Sq.mm copper flexible

c) 50/4.0 Mfd Rating Starting/Running Capacitor

d) 36/6.0, 40/2.5 Mfd Rating Starting/Running Capacitor

Supplying , Installation, Testing and Commissioning of Air Cooled Hi Wall split type Air conditioners complete with Indoor unit(IDU), Out door unit (ODU), surface / concealed copper Refrigerant piping with insulation (closed cell elastomeric nitrile rubber tubular pipe section) upto 3 Mtr (IDU to ODU), copper power cable upto 3.5 Mtr (IDU to ODU) i/c drain pipe R-32/R-410/ R-407 Green Refrigerant, wireless Remote control, suitable for working between 180- 260V with low & high voltage cutoff and 50 hz ,1 phase AC supply capable of performing cooling, dehumidification, air circulation of following capacity with Scroll / rotary compressor. The system shall be able to deliver 100% of the rated capacity upto 42 0C. Min 5 year Original Equipment Manufacturer (OEM) warranty both compressor and Printed Circuit Board (PCB). Must comply : Electrical cable IS 694 or IS 9968 temperature sensing control IS /International Electrotechnical Commission (IEC) 60730, hermetic compressor IS 10617, heat exchanger IS 11329, capacitor IS 2993 and motor IS 12615. Complete as per CPWD specification and IS : 1391 Part II 2023. The system shall be able to operate up to 50 0C (out door ambient temperature).

Supplying &Fixing of 4 KVA capacity automatic voltage stabilizer with time delay relay and high/low\ voltage trip facility input voltage 150V to 290V and output voltage 220+10% with copper flexible cable connection etc. as required at site.

Supplying & replacement of M.S. outdoor stand floor / Wall mounting powder coated stand suitable for 2.0 / 1.5 TR Capacity Split type AC outdoor unit Complete ete as reqd i/e credit for old dismantle material| under buy back.

Providing & fixing of 25 mm dia (Schedule-40) UPVCheavy duty white colour drain pipe of with necessaryfitting such as nipple, reducer, clamp on surface / recessi/c cutting the wall and making good the same completeas required i/c credit for old dismental material under buy back.

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