CAMC of split type, VRF ducted split unit, cassette type, Tower type, window type & Ductable AC package unit of different capacity in Lumding Division for three years.

A- CMC of Air conditioner Machine

Comprehensive Annual Maintenance Contract (CAMC) for operation, routine preventive maintenance, attending breakdowns and ensuring proper functioning of LG make Multi Variable Refrigerant Flow (VRF) Air Conditioning System installed at the Booking Area of Guwahati Railway Station for a period of 03 (three) years. The VRF system comprises 11 Nos. Inverter type Cassette Indoor Units of capacity 4 TR (approx. 5 HP each) and Outdoor Units consisting of 01 No. 24 HP and 02 Nos. 16 HP modules.The contractor shall attend all breakdown complaints on priority basis and restore the system within the stipulated response and rectification time as specified by the Engineer-in-Charge. The CAMC shall be comprehensive in nature and shall include repair, replacement and servicing of all defective parts/components including but not limited to PCB cards, 1 sensors, compressors, fan motors, electronic expansion valves (EEV), contactors, relays, solenoid valves, remote controllers, interconnecting cables, control wiring and all associated accessories required for satisfactory operation of the system. The contractor shall deploy skilled and authorized service personnel having adequate experience in VRF systems. All tools, tackles, testing instruments, consumables, refrigerant gas, lubricants and minor materials required for maintenance shall be included in the scope of work.The scope of work under CAMC shall include operation assistance, periodic inspection, preventive maintenance, servicing, testing, fault diagnosis, attending breakdown complaints and replacement/repair of defective parts for maintaining uninterrupted and efficient functioning of the complete VRF system. Routine maintenance schedules, service records and breakdown history shall be maintained properly and submitted to the Engineer- in-Charge periodically. The work shall be carried out as per OEM recommendations, relevant IS standards and site requirements complete in all respects.

Comprehensive Annual Maintenance Contract (CAMC) of 2, 3 TR Cassette Type Split Air Conditioners, ensuring safe, efficient and reliable operation throughout the contract period. The scope shall include quarterly preventive servicing of each unit comprising cleaning of air filters, evaporator and condenser coils, flushing and cleaning of drain tray and drain line, checking refrigerant gas pressure and carrying out topping up as required, inspection and tightening of all electrical connections and terminations, checking operation of compressor, indoor and outdoor fan motors, PCB/controller, swing mechanism and drain pump, measurement of supply voltage, running current, insulation resistance and temperature differential, and ensuring proper air throw, satisfactory cooling performance and noise-free operation. The contractor shall deploy skilled and experienced technicians/staff for attending breakdown complaints within 24 hours of intimation to ensure early restoration of normal functioning of the units. The contractor shall arrange all required tools, tackles, testing instruments, consumables and manpower for proper execution of preventive maintenance work, maintain maintenance records/logbooks at site indicating servicing dates and breakdown attendance details, and strictly comply with all applicable electrical safety practices and statutory requirements. Failures arising due to external power supply faults beyond the AC isolator, civil structural defects, fire, theft, natural calamities or mishandling shall be excluded from the scope.(Under SSE/P/LMG 2 ton - 9 nos., Under SSE/P/KYQ 3 Ton -2 nos.

B- Major items shall be supplied/provided on "as and when required"

Replacement of Rotary Type Compressor (declared non repairable) of capacity 1.5 TR in Split/Window/Tower Type Air Conditioning Unit by supplying, fitting, testing and commissioning of similar new compressor of suitable rating and specification complete with refrigerant gas charging, 1 brazing, replacement of compressor oil, filter drier, nitrogen pressure testing, vacuuming and all associated works required for proper functioning of the unit. The scope includes dismantling and removal of the damaged compressor, shifting and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Air Conditioning Unit.

Replacement of Rotary Type Compressor(declared non-repairable) of capacity 2 TR in Split/Window/Tower Type Air Conditioning Unit by supplying, fitting, testing and commissioning of similar new compressor of suitable rating and specification complete with refrigerant gas charging, 2 brazing, replacement of compressor oil, filter drier, nitrogen pressure testing, vacuuming and all associated works required for proper functioning of the unit. The scope includes dismantling and removal of the damaged compressor, shifting and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Air Conditioning Unit.

Replacement of defective/damaged Blower Motor (declared non-repairable) in Air Conditioning Unit by supplying, fitting, testing and commissioning of similar new blower motor of suitable capacity, voltage and specification complete with necessary mounting accessories, 3 coupling, wiring connections and all associated works required for proper functioning of the unit. The scope includes dismantling and removal of the damaged blower motor, checking of alignment and blower assembly, testing of operation after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Air Conditioning System.

"Replacement of defective/damaged Condenser Fan Motor along with fan blade (declared non-repairable) in Split Type Air Conditioning Unit by supplying, fitting, testing and commissioning of similar new condenser motor complete with compatible fan blade of suitable size, capacity, voltage and specification, including necessary mounting arrangement, wiring connections 4 and allied works required for proper functioning of the unit. The scope includes dismantling and removal of the damaged condenser motor and fan blade, checking of balancing and rotation, testing of condenser unit operation after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Air Conditioning System."

"Replacement of defective/damaged Condenser Motor along with fan blade (declared non-repairable) of Window Type Air Conditioning Machine by supplying, fitting, testing and 5 commissioning of similar new condenser motor complete with compatible fan blade of suitable capacity, voltage and specification, including necessary mounting accessories, wiring connections and allied works required for proper functioning of the unit. The scope includes dismantling and removal of the damaged condenser motor and fan blade, checking of alignment, balancing and direction of rotation, testing of the AC machine after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Window Type Air Conditioning Unit."

"Replacement of defective/damaged Condenser Coil (declared non-repairable) in Air Conditioning Unit by supplying, fitting, testing and commissioning of new condenser coil of suitable size, capacity and specification compatible with the existing system, complete with necessary 6 brazing, refrigerant gas charging, pressure testing with nitrogen, vacuuming and all associated works required for proper functioning of the unit. The scope includes dismantling and removal of the damaged condenser coil, reconnecting refrigerant piping, leak testing, performance testing after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Air Conditioning System."

"Replacement of defective/damaged Cooling Coil (Evaporator Coil) of Split/Window Type Air Conditioning Machine by supplying, fitting, testing and commissioning of similar new cooling coil of suitable size, capacity and specification compatible with the existing unit, complete 7 with necessary brazing, refrigerant gas charging, nitrogen pressure testing, vacuuming and all associated works required for proper functioning of the system. The scope includes dismantling and removal of the damaged cooling coil, reconnecting refrigerant piping, leak testing, performance testing after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Air Conditioning Unit."

"Supply, laying, fitting and fixing of refrigerant grade insulated copper piping for Split Type Air Conditioning Unit for replacement work, comprising suitable size annealed copper tubes 8 complete with nitrile rubber insulation, flaring/brazing, necessary fittings, clamps, saddles, sleeves, insulation tape and all associated accessories required for proper refrigerant circulation and satisfactory operation of the system. The scope includes dismantling/removal of damaged existing copper pipe wherever required, pressure testing with nitrogen, vacuuming, leak testing and recommissioning of the AC unit complete in all respects as directed by the Engineer-in-Charge."

Supply, laying, fitting and fixing of 25 mm dia UPVC drain pipe complete with all 9 required accessories such as bends, elbows, tees, flanges, tappings, wall sleeves, hangers, clamps, supports, anchors and jointing materials, including cutting, threading/jointing, fixing on wall/ceiling with suitable supports and making proper connections complete for drainage application as directed by the Engineer-in-Charge.

"Replacement of defective/non-repairable Scroll Type Compressor suitable for 2/3/4 TR Cassette Type Air Conditioning Unit by supplying, fitting, testing and commissioning of new 3 Phase scroll compressor of suitable capacity, voltage and specification compatible with the existing system, complete with replacement of compressor oil, filter drier, refrigerant gas charging, brazing, 10 nitrogen pressure testing, vacuuming and all associated works required for proper functioning of the unit. The scope includes dismantling and removal of the damaged compressor, reconnecting refrigerant and electrical connections, testing of operating parameters after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in- Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Cassette Type Air Conditioning System."

"Replacement of defective/damaged PCB/PB Set of Cassette Type Air Conditioning Unit by supplying, fitting, testing and commissioning of similar new PCB/PB Set of suitable model, rating and specification compatible with the existing system, complete with necessary wiring 11 connections, programming/configuration and all associated works required for proper functioning of the unit. The scope includes dismantling and removal of the defective PCB/PB Set, checking of control circuits and communication wiring, testing of all operational functions after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in- Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Cassette Type Air Conditioning System."

"Replacement of defective/damaged PCB Set of Inverter Type Split Air Conditioning Unit of capacity 1 Ton / 1.5 Ton / 2 Ton by supplying, fitting, testing and commissioning of similar new PCB Set of suitable model, rating and specification compatible with the existing system, 12 complete with necessary wiring connections, programming/configuration and all associated works required for proper functioning of the unit. The scope includes dismantling and removal of the defective PCB Set, checking of indoor and outdoor control circuits, communication wiring and safety protections, testing of all operational parameters after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Inverter Type Split Air Conditioning System."

"Replacement of defective/damaged PCB Set of Non-Inverter Type Split Air Conditioning Unit of capacity 1 Ton / 1.5 Ton / 2 Ton by supplying, fitting, testing and commissioning of similar new PCB Set of suitable model, rating and specification compatible with the existing system, complete with necessary wiring connections and all associated works required for proper 13 functioning of the unit. The scope includes dismantling and removal of the defective PCB Set, checking of indoor and outdoor control circuits, thermostat and safety protections, testing of all operational functions after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Non- Inverter Type Split Air Conditioning System."

"Replacement of defective/damaged Outdoor Condenser Fan Motor of Cassette Type Air Conditioning Unit of capacity 2 Ton / 3 Ton by supplying, fitting, testing and commissioning of similar new condenser fan motor of suitable rating, voltage and specification compatible with the existing system, complete with necessary mounting accessories, wiring connections and allied works 14 required for proper functioning of the unit. The scope includes dismantling and removal of the defective condenser fan motor, checking of fan blade balancing and direction of rotation, testing of condenser unit performance after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Cassette Type Air Conditioning System."

"Replacement of defective/damaged Indoor Evaporator Blower Motor of Cassette Type Air Conditioning Unit of capacity 2 Ton / 3 Ton / 4 Ton by supplying, fitting, testing and commissioning of similar new evaporator/blower motor of suitable rating, voltage and specification compatible with the existing system, complete with necessary mounting accessories, blower 15 assembly alignment, wiring connections and allied works required for proper functioning of the unit. The scope includes dismantling and removal of the defective indoor evaporator motor, checking of blower wheel balancing and direction of rotation, testing of airflow and cooling performance after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Cassette Type Air Conditioning System."

"Supply of condensate drain water pump suitable for 2 Ton/ 3 Ton / 4 Ton Cassette Type Air Conditioning Unit for lifting and draining of condensate water, complete with motor, float 16 switch arrangement, reservoir tank, mounting accessories and all standard fittings compatible with the existing cassette AC system. The pump shall be suitable for continuous operation, low noise performance and automatic operation through float control for effective removal of condensate/deep frost water from the indoor unit. The item shall include all necessary accessories required for proper installation and satisfactory functioning as directed by the Engineer-in-Charge."

"Replacement of defective/damaged Swing Motor of 2 Ton/ 3 Ton / 4 Ton Cassette Type Air Conditioning Unit by supplying, fitting, testing and commissioning of similar new swing motor of suitable rating, voltage and specification compatible with the existing system, complete with necessary mounting accessories, linkage mechanism adjustment, wiring connections and allied 17 works required for proper functioning of the unit. The scope includes dismantling and removal of the defective swing motor, checking of swing flap/louver operation and alignment, testing of automatic air flow swing function after replacement, and returning the unserviceable/damaged materials to consignee store as directed by the Engineer-in-Charge. The work shall be carried out complete with all consumables, tools, tackles and accessories required for satisfactory operation of the Cassette Type Air Conditioning System."

Item Breakup - A- CMC of Air conditioner Machine

For 3rd year Total 36001.80 Comprehensive Maintenance Contract of 1.5 TR and 2 TR Split/Tower Type Air Conditioners of various makes and models installed at different offices, service buildings, control rooms, rest houses and other locations over the LMG Division, to ensure their safe, reliable and efficient operation throughout the contract period. The scope shall include quarterly preventive maintenance of each unit comprising cleaning of indoor air filters, evaporator and outdoor condenser coils, flushing and cleaning of drain tray and drain line to prevent water leakage, checking and tightening of all electrical connections and terminations, inspection and functional testing of compressor, indoor and outdoor fan motors, blower assembly, capacitors, relays, contactors and PCB/controller, checking refrigerant gas pressure and carrying out topping up as required depending upon the make/model, verification of thermostat/remote controller operation, Item- 4 measurement of supply voltage, running current, insulation resistance and temperature differential, and ensuring proper air circulation, satisfactory cooling performance and acceptable noise and vibration levels. The contractor shall deploy skilled and experienced maintenance staff/technicians conversant with different AC makes for attending breakdown complaints promptly within 24 hours of intimation to restore normal functioning of the units. The contractor shall arrange all required tools, tackles, ladders, testing instruments, consumables and cleaning materials for proper execution of maintenance work, maintain detailed maintenance records/logbooks at site indicating preventive servicing dates and breakdown attendance details, and strictly follow electrical safety practices and statutory requirements. Failures due to external power supply faults beyond the AC isolator, major civil defects, fire, theft, natural calamities or misuse/mishandling shall be excluded from the scope. S No. Item Description of Item Unit Qty Rate Amount No

for 3rd year Total 1439477.46 LUMDING DIVISION-ELECTRICAL/N F RLY Comprehensive Annual Maintenance Contract (CAMC) of 2, 3 TR Cassette Type Split Air Conditioners, ensuring safe, efficient and reliable operation throughout the contract period. The scope shall include quarterly preventive servicing of each unit comprising cleaning of air filters, evaporator and condenser coils, flushing and cleaning of drain tray and drain line, checking refrigerant gas pressure and carrying out topping up as required, inspection and tightening of all electrical connections and terminations, checking operation of compressor, indoor and outdoor fan motors, PCB/controller, swing mechanism and drain pump, measurement of supply voltage, running current, insulation resistance and temperature differential, and ensuring proper air throw, Item- 5 satisfactory cooling performance and noise-free operation. The contractor shall deploy skilled and experienced technicians/staff for attending breakdown complaints within 24 hours of intimation to ensure early restoration of normal functioning of the units. The contractor shall arrange all required tools, tackles, testing instruments, consumables and manpower for proper execution of preventive maintenance work, maintain maintenance records/logbooks at site indicating servicing dates and breakdown attendance details, and strictly comply with all applicable electrical safety practices and statutory requirements. Failures arising due to external power supply faults beyond the AC isolator, civil structural defects, fire, theft, natural calamities or mishandling shall be excluded from the scope.(Under SSE/P/LMG 2 ton - 9 nos., Under SSE/P/KYQ 3 Ton -2 nos. S No. Item Description of Item Unit Qty Rate Amount No

For 3rd year Total 233640.00