CA NO CWE/CHM(P)CH-02/2020-21 PROVN OF REPAIR/ MAINTENANCE AND REPLACEMENT / RENEWAL OF VARIOUS DEFECTIVE PARTS OF CENTRALAC PLANTS (5X225TR AND 2X48TR), DUCTABLE ACs AND ITS CONNECTED ITEMS ALONG WITH CLEANING OF DUCT THROUGH ROBOTIC CAMERA OF OT

Amount

Preventive maintenance, servicing and repair of central AC Plant of capacity 5x225 TR and 2x48 TR installation and trace out the fault/ within reasonable time as directed by GE (P) CH Chandimandir and providing of all type of T&P for Central AC Plant and its accessories all as directed by Engineer-in-Charge.

Scope of work will be repair/described in power house as under: -

Compulsory follow preventive maintenance for Central AC Plant equipments, taking down defective parts and repairing the same immediately by a competent mechanic, replacing the defective part to make the plant in serviceable conditinon all as specified and directed by Engineer-in-charge/JE in charge at site.

Details of plant is as under :-(A) 225 x 5 TR (a) Chiller 225 TR Make : M/s Clivet - 05 Nos. (b) Cooling tower twin fan motor 5 HP - 05 Sets. (c) Condenser Pump Set 40 HP Make : Grunfos-05 Sets. (d) Primary pump set Make : Grundfos - 05 Sets. (e) Secondary pump set Make : Grundfos - 05 Sets. (f) VFD Make : ABB compatible upto 06 Pump set-02 Sets. (g) Hot water Gen Set 350 KW Make : Rapid Cool - 03 Sets. (h) Hot water Pump Set Make : Grundfos -03 Sets. (j) Condensor pipe line from 80mm to 300mm dia - 01 Set. (k) Chilled water pipe line of various capacity from AC Plant to AHUs-01 Set.

(l) Hot water pipe line of various size and capacity from AC Plant to AHUs -01 Set. (m) Control accessoies such as temp guage, pressure guage, fire damper, electric actuator,2-way motorized valves, butterfly valves, check valves,Y strainer etc installed in Central AC Plant as well in AHUs at different locations - 01 Job. (n) HVAC panel installed at Central AC Plant -01 Job. (o) Control panel for contral of AHUs and other accessories -01 Job. (p) Ductings with diffusers/Grilles affixed with above mentioned AHUs. (q) LDB panels installed at AHUs-08 Nos. (r) Control cables laid from Central AC Plant to AHUs room/PUF panel room -01 Job. (s) Any other accessories associated with central AC plant at Command Hospital Chandimandir. (t) Air handling units complete including butterfly valves, balance valves, fire damper and other electrical accessories.

(B) 2 X 48 TR (a) Chiller 2X48 TR Make : Blue star - 02 Nos. (b) Cooling tower twin fan motor 5 HP - 04 Sets. (c) Primary pump set 7.5HP - 02Nos (d) Heater 3000watt -24Nos (e) Condensor pipe line from 80mm - 02 Sets. (f) Condensor pipe line from 7.8mm - 02 Sets. (g) Chilled water pipe line of various capacity from AC Plant to AHUs-01 Set (h) Control accessoies such as temp guage, pressure guage, fire damper, electric actuator,2-way motorized valves, butterfly valves, check valves,Y strainer etc installed in Central AC Plant as well in AHUs at different locations - 01 Job. (j) HVAC panel installed at Central AC Plant -01 Job.

(k) Ductings with diffusers/Grilles affixed with above mentioned AHUs. (l) LDB panels installed at AHUs-08 Nos. (m) Control cables laid from Central AC Plant to AHUs room/PUF panel room -01 Job. (n) Any other accessories associated with central AC plant at Command Hospital Chandimandir. (o) Air handling units complete including butterfly valves, balance valves, fire damper and other electrical accessories. -12Nos

Note : (i) Spares for maintaining above mentioned plant shall be measured and paid for seperaly. (ii) Minor spares such as nuts, bolts, washers, aluminium lugs, grease or any spare part required for satisfactory operation of AC plant costing upto Rs. 2000/- other than mentioned in this CA here-in-after are deemed to be included in unit rate quoted by the contractor. (iii) Contractor or his Supervisor/site Engineer will be responsible to take complaints from central AC plant daily at 0800 Hours and 1600 Hours or telephonically at any time and shall be responsible to render completion of work in writing as well as verbally to Engr-in-charge/JE E/M.

(iv) If Contractor fails to repair/replace any faulty items with in 24 Hours after entry of fault in log sheet, a panel recovery of Rs. 500/- per hours afte 24 hours shall be recovered from next RAR from the contractor with out any formal communication besides the recovery of penalty.

Descaling of condensor unit of 225 TR screw type water chiller, removing end cover/pipe line to make access and descaling the condenser tubes manually by wire brushing the tubes, cleaning thoroughly by using clean water and chemical such as HCL or any other chemical specified as per IS for proper working of condenser units all as specified and directed by Engr-in-charge.

Taking down defective HEPA filters from OT complex of size 900x600mm after taking down outer covers, removing nut, bolts and washers from plenum including cleaning the plenum internally thoroughly suitable for replacement of HEPA filter all as specified and directed. Note : HEPA filters shall be measured and paid for seperately.

HEPA filter of size 900x600mm, 0.3 micron, 99.99% efficiency as per existing at site including replacing defective nut, bolt and washer complete all as specified and directed. Make : AAF/Mechmark/Global or of any other equivalent make as approved by GE.

Painting of cooling tower/central AC plant 5 x 225 TR and 2 x 48 TR surface of cooling tower and base / ac plant units with synthetic enamelled paint after preparation of surface with spray painting complete all as specified and directed. Note : Colour of paint is as per existing on site or Approved by Engr in charge

Taking down defective/burnt condenser pump motor of capacity 40 HP, transporting the same to local market after disconnecting the motor electrically as well as mechanically, opening the motor, taking down burnt winding wire, rewinding the motor with same size and guage winding wire, refixing the same in original position and testing the pump set to the entire satisfaction of Engr-in-Charge.

Taking down defective/burnt hot water pump motor/AHU motor of capacity 12.5/15 HP, transporting the same to local market after disconnecting the motor electrically as well as mechanically, opening the motor, taking down burnt winding wire, rewinding the motor with same size and guage winding wire, refixing the same in original position and testing the pump set to the entire satisfaction of Engr-in-Charge.

Taking down defective/burnt hot water pump motor/AHU motor of capacity 20 HP, transporting the same to local workshop after disconnecting the motor electrically as well as mechanically, opening the motor, taking down burnt winding wire, rewinding the motor with same size and guageof copper winding wire, refixing the same in original positiong and testing the pump set to the entire satisfaction of Engr-in-Charge.

Taking down defective/burnt primary pump motors/AHU blower motor of capacity 7.5/10 HP, transporting the same to local market after disconnecting the motor electrically as well as mechanically, opening the motor, taking down burnt winding wire, rewinding the motor with same size and guage winding wire, refixing the same in original position and testing the pump set to the entire satisfaction of Engr-in-Charge.

Taking down defective/burnt Cooling towers/AHU blower motor of capacity 05 HP, transporting the same to local market after disconnecting the motor electrically as well as mechanically, opening the motor, taking down burnt winding wire, rewinding the motor with same size and guage winding wire, refixing the same in original position and testing the pump set to the entire satisfaction of Engr-in-Charge.

Repair to defective/leaked cooling coils of AHUs by cutting the defective part and replacing the same with same size and capacity of cooling coil all as specified and directed.

Taking down defective blower shaft of AHU after disconnecting the same from AHU of any size, transporting the same to local market, filling metal to deshaped portion of key groove, grinding/polishing the key groove including replacing lock key, refixing the entire unit in AHU, testing the entire blower unit for satisfactory performance of Engineer-in-Charge.

Taking down defective insulation over duct, preparing surface, applying adhesive and insulating the duct with external thermal insulation 13mm thick nitrile subber open cell acoustic foam including insulating the joint with aluminium tape all as specified and directed at site. Make : Accflex/Armecell/K flex/Vidoflex.

Supply and fix in replacement of 6 mm thick nitrile rubber insulation on condensate drain pipe of size 50/40mm dia and fittings like valves, flanges and union etc complete all as specified and directed. Make : Accoflex/Armacell/K Flex.

Supply and fixing in replacement the following spares for Central AC Plant as and when found defective during operation of the plant :-

MCCB 3 pole 415 volts Ics=100%Icu, 36 KA of capacity 200 Amps with adjustable thermal setting all as specified and directed. Make : L&T/Schneider/GE/Legrand/Havells

MCCBs for motor back up protection, suitable for isolation 3 pole 10 to 18 Amps , 415 volts, 50 Hz all as specified and directed.Make : L&T/Schneider/GE/Legrand.

MCCBs for motor back up protection, suitable for isolation 3 pole 32 Amps, 65 KA 415 volts, 50 Hz all as specified and directed. Make : L&T/Schneider/GE/Legrand.

MCCBs for motor back up protection, suitable for isolation 3 pole 40/63 Amps, 50 KA 415 volts, 50 Hz all as specified and directed. Make : L&T/Schneider/GE/Legrand.

Indicator lamps LED type for Red, Yellow and Blue colour for AHU panel board as per existing capacity all as specified and directed. Make : L&T/Selzer/Siemen/A/KAYCEE..

Pre filter flange/box type as required at site of size 610x610x50mm having efficiency 90% to 10 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site all as specified. Make : AAF/ Purolator/Thermadyne/ Global.

Pre filter flange/box type as required at site of size 610x305x50mm having efficiency 90% to 10 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site all as specified. Make : AAF/ Purolator/ Thermadyne/ Global.

Pre filter flange/box type as required at site of size 305x305x50mm having efficiency 90% to 10 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site all as specified. Make : AAF/ Purolator/ Thermadyne/ Global.

Fine filter flange/box type as required at sitye of size 610x610x150mm having efficiency 90% to 05 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site all as specified. Make : AAF/ Purolator/ Thermadyne/Global.

Fine filter flange/box type as required at sitye of size 610x305x150mm having efficiency 90% to 05 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site all as specified. Make : AAF/ Purolator/ Thermadyne/Global.

Fine filter flange/box type as required at sitye of size 305x305x150mm having efficiency 90% to 05 micron and fixing the same in existing AHUs including minor repairs to chamber box as required at site all as specified. Make : AAF/ Purolator/ Thermadyne/ Global.

Power contactor 3 pole 32/30 Amps with no volt coil and all accessories for fixing the same in exisitng starter all as specified and directed. Make : L&T Type MNX 32 or equivalent in Schneider/GE/Siemens./ABB

Power contactor 3 pole 50/55 Amps with no volt coil and all accessories for fixing the same in exisitng starter all as specified and directed. Make : L&T Type MNX 50 or equivalent in Schneider/GE/Siemens./ABB

Power contactor 3 pole 25 Amps with no volt coil and all accessories for fixing the same in exisitng starter. Make : L&T/Siemen/C&S./ABB

MCB SP 6-32 Amps 10 KA C series all as specified. Make : C&S/Legrand/GE/Schneider./ABB

Taking down defective pulley of any size from blower unit/ AHU units , replacing the same with same size and diameter pulley from the local market including cutting key groove and fixing the same in original position all as specified and directed.

Pressure guage 0-10 Kg/cm2, round dial type including brass nipple, test cock and other minor accessories to fix the same in AC plant/AHUs all as specified and directed. Make : H. Guru/ Fiebig/ Dwyer.

Temperature guage 0-50ºC, rectangular type with transparent glass to see the reading including brass nipple and other minor accessories to fix the same in AC plant/AHUs all as specified and directed. Make : Taylor/ H. Guru/ DS Engg or any equivalent ISI marked.

Ball brass valves, high pressure with polythene float and flynut complete, screwed for iron pipe or brass ferrule of size 20mm bore. Make : CIM/Rapidcool/Leader.

Ball brass valves, high pressure with polythene float and flynut complete, screwed for iron pipe or brass ferrule of size 25mm bore. Make : CIM/Rapidcool/Leader.

Ball brass valves, high pressure with polythene float and flynut complete, screwed for iron pipe or brass ferrule of size 40mm bore. Make : CIM/Rapidcool/Leader.

Ball brass valves, high pressure with polythene float and flynut complete, screwed for iron pipe or brass ferrule of size 50mm bore. Make : CIM/Rapidcool/Leader.

MCB SP 63 Amps 240 volts 10 kA 'C' curve all as specified and directed. Make : Schneider/L&T/Legrand/Hager.

Heating element made of seamless copper tube flanged resistance water immersion type 25 KW for hot water generator 350 KW all as specified and directed.

Butterfly valves PN 1.6 flanged type heavy duty of size 100mm bore including necessary accessories to fix the same in existing hot as well as in chilled water line complete all as specified and directed. Make : Audco/Advance/Castle or any equivalent ISI marked.

Butterfly valves PN 1.6 flanged type heavy duty of size 80mm bore including necessary accessories to fix the same in existing hot as well as in chilled water line complete all as specified and directed. Make : Audco/Advance/Castle or any equivalent ISI marked.

Butterfly valves PN 1.6 flanged type heavy duty of size 65mm bore including necessary accessories to fix the same in existing hot as well as in chilled water line complete all as specified and directed. Make : Audco/Advance/Castle or any equivalent ISI marked.

Butterfly valves PN 1.6 flanged type heavy duty of size 150mm bore including necessary accessories to fix the same in existing hot as well as in chilled water line complete all as specified and directed. Make : Audco/Advance/Castle or any equivalent ISI marked.

Butterfly valves PN 1.6 flanged type heavy duty of size 125mm bore including necessary accessories to fix the same in existing hot as well as in chilled water line complete all as specified and directed. Make : Universal/Advance/Castle or any equivalent ISI marked.

Butterfly valves PN 1.6 flanged type heavy duty of size 400mm bore including necessary accessories to fix the same in existing hot and chilled water line complete all as specified and directed. Make : Universal/Advance/Castle or any equivalent ISI marked.

Butterfly valves PN 1.6 flanged type heavy duty of size 200mm bore including necessary accessories to fix the same in existing hot as well as in chilled water line complete all as specified and directed. Make : Universal/Advance/Castle or any equivalent ISI marked.

Butterfly valves PN 1.6 flanged type heavy duty of size 40mm bore including necessary accessories to fix the same in existing hot and chilled water line complete all as specified and directed. Make : Universal/Advance/Castle or any equivalent ISI marked.

Balance valves flanged type heavy duty of size 80mm bore including necessary accessories to fix the same in existing hot as well as in chilled water line complete all as specified and directed. Make : Audco/Advance/Castle.

Balance valves flanged type heavy duty of size 50mm bore including necessary accessories to fix the same in existing hot as well as in chilled water line complete all as specified and directed. Make : Audco/Advance/Castle.

Balance valves flanged type heavy duty of size 40mm bore including necessary accessories to fix the same in existing hot as well as in chilled water line complete all as specified and directed. Make : Audco/Advance/Castle.

Balance valves flanged type heavy duty of size 32mm bore including necessary accessories to fix the same in existing hot as well as in chilled water line complete all as specified and directed. Make : Audco/Advance/Castle.

Freon gas R-134 A in chiller unit as required at site for efficient functioning of chiller all as specified and directed.

2-way motorized valves suitable for chilled water as well as hot water application complete with electrical/electronic actuactor of size suitable for 50mm dia pipe complete all as specified and directed. Make : Belimo/Beacon Rotork/Nibco.

2-way motorized valves suitable for chilled water as well as hot water application complete with electrical/electronic actuactor of size suitable for 40mm dia pipe complete all as specified and directed. Make : Belimo/Beacon Rotork/Nibco.

Auto air vent for purging air in hot/chilled water line all as specified and directed. Make : Rapid Control/Anergy or equivalent ISI marked.

Powder coated extruded aluminium construction square shape return air diffusers, anti smudge ring & aluminium volume control dampers all specified and directed.

1100 volts grade armoured XLPE, insulated and sheathed copper conductor cables of size 4 core 1.5 Sqmm cable including terminations with suitable clamps, saddles, hooks, bolts etc complete all as specified. Make : CCI/Havells/Grandley.

Supply fixing in replacement of Coupling of suitable size of motor capacity 40 HP complete opening of motor if necessarry and changing the coupling and refixing the same motor complete all specified and directed. Make : As per existing in site or Approved by Engr in charge

Supply fixing in replacement of Coupling of suitable size of motor capacity 20 HP complete opening of motor if necessarry and changing the coupling and refixing the same motor complete all specified and directed. Make : As per existing in site or Approved by Engr in charge

Supply fixing in replacement of tyre Coupling complete set as per sample of suitable size of motor capacity 10 HP complete opening of motor if necessarry and changing the coupling and refixing the same motor complete all specified and directed. Make : As per existing in site or Approved by Engr in charge

Supply fixing in replacement of Seal of suitable size of motor capacity 10 HP complete opening of motor if necessarry and changing the sealed and refixing the same motor complete all specified and directed. Make : As per existing in site or Approved by Engr in charge

Supply fixing in replacement of Seal of suitable size of motor capacity 20 HP/40 HP complete opening of motor if necessarry and changing the sealed and refixing the same motor complete all specified and directed. Make : As per existing in site or Approved by Engr in charge

Supply and fixing in replacement of non return valve of size 200mm bore including necessary accessories to fix the same in existing hot /chilled water line complete all as specified and directed. Make : Grundfos or any equivalent ISI marked.

Supply and fixing in replacement VFD of AHU/ AC plant unit for existing motor capacity. Make: Danfoss or as approved by GE

Supply and fixing in replacement of Fan belt existing or as per site complete all as specified and directed. Modle No:-31A, 44B, 32B, 34B, 38B, 39B, 61B, 54B, 58B, 56B, 52B, 64B Make: As per existing site

Supply and fixing in replacement of Motor Protection circuit breaker of capacity 63 Amps or as per existing site ,IP 20 Protection complete all as specified and directed Make : L & T/ havells/siemens/Indo asian or approved by engr in charge

Supply and fixing in replacement of fire damper existing in AHU complete disconnecting from existing place and replace it with new complete all as specified and directed Make : as per sample existing at site

Supply and fixing in replacement of Strip heater of capacity 3 KW in AHU complete all as specified and directed.

Supply and fixing in replacement of cooling tower filter (film type fill media and splash type fill media) as per existing in site with complete removing of old filters and cooling tower fan and motor and refixing of fan and motor after replacing of filter with complete assesoried all as specified and directed. Make- As approved by Engr-in-Chare / GE.

Supply and fixing in replacement of expansion valve of 225 TR plant complete removing of old expansion valve from company mechanics and refixing the new expansion valve and connection with own arrengement and making plant running condition complete all as specified and directed.

Servicing of condensor unit of 48 TR screw type water chiller, removing end cover/pipe line to make access and descaling the condenser tubes manually by wire brush the tubes, cleaning thoroughly by using clean water and HCL chemical or any other chemical specified as per IS for proper working of condenser units all as specified and directed by GE.

Supply fixing in replacement of CT Fan power contactor(air breack power contactor). Model- 3TS30-10-0A-8K AC-1-25A,450V, 50Hz . Make : Siemens/Legrand .

Refregirent gas R-407C in chiller unit as required at site for efficient functioning of chiller all as specified and directed.

Supply fixing in replacement of water sensor of 48 TR central AC plant as per existing at site complete all as specified and directed.

Supply fixing in replacement of water sensor of 225 TR central AC plant as per existing at site complete all as specified and directed make : clivet

Repair of chiller joint after giving pressure of nitrogen and joint again by brazing complete all as specified and directed.

Repair of discharge througt valve of central ac plant of capacity 48 TR as per existing at site complete all as specified and directed.

Supply & fixing of PCB card for 225 TR AC Plant and 48 TR AC plant as per existing size and capactiy installed by othorised company mechanics/dealer and install all the programe and making plant in running condition complete all as specified and directed. Make : Clivet / blue star.

Supply & fixing of PCB card for 48 TR AC plant as per existing size and capactiy installed by othorised company mechanics/dealer and install all the programe and making plant in running condition complete all as specified and directed. Make : Clivet / blue star

Testing of circuit plant from authorised dealers of company or mechanics complete all as specified and directed.

Supply and fixing in replacement of Gun metal impeller of capacity 20 to 40 HP motor complete all as specified and directed.

Supply and fixing in replacement of Rotar of capacity 5/7.5 HP complete all as specified and directed.

Supply and fixing in replacement of Starter of capacity 5 to 7.5 HP with accessories complete all as specified and directed.

Supply and fixing in replacement of Gun metal gland bush of capacity 5 to 7.5 HP change it immediately when found diffective and making motor in runnig condition complete all as specified and directed.

Supply and fixing in replacement of Gun metal gland bush of capacity 20 to 40 HP change it immediately when found diffective and making motor in runnig condition complete all as specified and directed.

Complete servicing of blower including replacement of bearing weather making unit including motor pully,V belts and blower flywheel and maintain the positive pressure inside complete all as specified and directed.

Supply fixing in replacement of blower shaft of capacity 5/7.5 HP for smooth functioning of blower complete all as specified and directed.

Servicing of monoblock pump of capacity 5/7.5 HP with greasing ,replacement of bearing ,impeller ,impellar shaft ,bush and reassembling same fitting at site for smooth running of plant (impeller ,bushes,shaft will be measured and paid separately.

Supply and fixing in replacement of impeller/ Rooter pump shaft of motor of capacity 20 HP change it immediately and making motor in runnig condition complete all as specified and directed.

Supply and fixing in replacement of impeller/ Rooter pump shaft of motor of capacity 5/7.5 HP change it immediately and making motor in runnig condition complete all as specified and directed.

Supply and fixing in replacement of bearing (6223) of motor/pump of capacity 40 HP and change it immediately and making motor/pump in runnig condition complete all as specified and directed.

Supply and fixing in replacement of bearing (6312) of motor/pump of capacity 20 HP and change it immediately and making motor/pump in runnig condition complete all as specified and directed.

Supply and fixing in replacement of bearing (6308) of motor/pump of capacity 7.5 HP and change it immediately and making motor/pump in runnig condition complete all as specified and directed.

Supply and fixing in replacement of bearing (6308) of motor/pump of capacity 5 HP and change it immediately and making motor/pump in runnig condition complete all as specified and directed.

Supply and fixing in replacement of pump carbon seal as per existing shaft of motor of capacity 5/7.5 HP change it immediately and making motor in runnig condition complete all as specified and directed.

Supply and fixing in replacement of Pump carban seal as per existing capacity ( 20 HP) in site and change it immediately and making motor in runnig condition complete all as specified and directed.

Repair/Replacement of cooling tower fans blade with coupling of aluminium as per eixisting capactiy and size complete all as specified and directed.

Supply and fixing of water head (06 Nos ) of PVC dia 75 MM including all joints nozell and all connected acessories for cooling towerall as specified and directed.

Refixing of aluminum fibre door of AHUs by replacing of hinges,nut & bolts including provison of locking arrangement

Dismantlalling /Taking down unserviceable central AC waste water drainage GI pipe including all fittings on 5th floor officer ward command hospital (WC) Chandimandir,all as specified.

Dismantalling of Fasle ceiling carefully and rectified the defective parts / accessoris and refixing the same all as specified.

Opening of AC Ducts carefully and repairing, welding and replacement of defective parts of duct complete all as specified .

Supply & fixing 40mm dia GI, pipe medium grade, with complete accessories, connecting to drain pipe all as specified .

Dismantlalling /Taking down unserviceable central AC condensate water drain GI pipe including all fittings of AHU all as specified and directed.

Replacement of condensate water drain pipe with new GI pipe-B class of AHUs of size 40 mm/ 25 mm fittings like anchor fasteners, couplings, bends, elbows, tees, thrust, blocks, wooden blocks, flanges, welding as required including insulation complete.

Supply & fixing of blower unit of AHU of Capacity as per existing make and size as specified and directed.

Opening of AHU Coil, Supply duct &return duct, diffusers, grills, damper and any other installed component that part of AC plant at Ots (01 to 08) & duct of conncected Area of CH (WC) Chm. All above part should be cleaned with following procedures and equipments:-

(a) Vacuums collection:probably the most important as this ensres that there is no cross contamination in plant premises. The unit we use is equiped with HEPA filter and high static fan. (b) Rotary brushes system self-propelled type with different types of brushes and used to agitated and loosen dirt with duct. (c) Viper set used again to loosen dirt depending upon the type & size of duct. (d) Contact vacuuming menthod of HVAC system cleaning which incorporates agitation and vcuum collection principle into one operation. (e) Compressed air washing mechanical means to agitate and dislodge particulate form the interior surface of HVAC system. (f) Robotic camera used for inspection before,during afnd after the cleaning process. The vedio certified the duct clean and assist during cleaning. (g) All of the grill and differs are removed and clean

(h) Foam core boards are placed upto supply vent openings. The air movement holds these boards upto the opening, This also increase the air movement in the duct. All but one supply vent is covered. The open supply vent allows for the air to safety flow backward through the air duct system without creating adverse negative pressure. (j) Starting for farthest vent opening each branch line is cleaned using nylon duct brushes, cable driven brushes, or forwarded air blast assemblies to loosen debris. The agitation tool causes debris to the quickly caught up in the air movement from the HYPE M/c The process is then repeated at each vent opening . Once all the branch line have been cleaned , the main pocket filter is cleaned. (k) After the dust and debris is removed from the system, an light fogged through the air duct system, This product immediately kills fungus or bacteria. The blower motor is inspected and cleaned if necessay and accessible.

(l) Finally through video camera, re-inspect the air duct system in order to verify its cleanliness. During and after, the cleaning process to see cleanliness of air ducts. (m) The insulation in the air handler unit case is manually cleaned and then treated with fogger m/c to kill an residual mold, fungus, or bacteria. The blower motor is inspected and cleaned if necessary and acessible. (n) Coil cleaning with the COIL CLEANER (o)Testing the duct after cleaing all part of the system of air ducts. Note :- The contractor will have to submit the AC duct cleaning report showing photographs before cleaning & after cleaning of duct and complete videography will have to be sumitted in soft copy to GE (P) CH & Engr-in-Charge before claiming any payment of the same.

Iconic Engineers