University Of Agricultural Sciences Tender

I) AIR CONDITIONING SYSTEM: Annual Maintenance of Supplying & filling refrigerant (F-22/F/12) for air conditioning equipment's. Which includes the labour & Nitrogen gas for pressure and leak testing.

Routine Maintenance of Water cooled screw chillers complete with Screw type Compressors with Shell and tube Water cooled Condensers and Shell and tube Chillers, Microprocessor Controllers. Electronic Expansion Valve/ orifice, Chilled Water out 6.7oC;Cond. Water in 29oC. as per the original equipment manufacturers standards, by taking preventive measures as per the equipment manufacturers manual, so that the system is functioning properly. Preventive maintenance service Chiller-equipments every months i.e.12 times in a year. Each service will include the following: Checking the functioning of Chiller unit / Controls and all such equipment covered under the contract. Descaling of condensers/chemical cleaning of evaporator coils/replacement of pre filters based on our assessment and working parameters of the plant. Replenishing refrigerant gas and compressor oil in the system arising out of system defect, excluding sealed compressor.( Gas & oil charges will be paid extra as per actuals). Checking of compressor for its proper working and capable of rendering desired efficiency as per manufacturers standards.. Annual pumping-down and restarting as and when required. Checking of Microprocessor control panel, control boards, transducers of packaged chillers/ condensing unit for their correctness and replace if necessary. Intimating about replacing of parts due to normal wear and tear well in advance. Descaling of heat exchangers will not be required if water supplied is as per Blue Star specification. If need be, descaling will be done once a year. Lubrication :-With the advent of self lubricated parts and assemblies, lubrication to be done based on need and not as a matter of routine. 180TR x 3nos =540 TR .

Annual Maintenance as per original equipment manufacturers standards, by taking preventive measures as per the equipment manufacturers manual, so that the system is functioning properly. - cabinet type, modular ceiling suspended double skin air handling units with 25/40 mm thick panels complete with Fan section with forward curved DlDW centrifugal low noise fan (fan Noise not exceeding 70dBa at 1m distance of bare fan), fan motor, drive set with V-Belt/ direct drive, belt guard, limit switch & light point with marine lamp with cover for the fan motor section, access door, Coil section with cooling coil, stainless steel drain pan, filter section with filters suitable for 10 micron particle size, 90% efficient filters, with GI/Aluminium dampers for outlets. The chiIled water entering temperature to be maintained at 7.0degC and the ADP to be achieved shall be 11.6 degC. The AHU is capable of handling air at static pressure of 25mm WC, and capacitites .- ( 37500 CFM). -Cleaning the filters regularly, Check electrical connections, power supply, water leakage, viberations, noise level, motor-body over heating, lubricating moving parts, belt drive adjustments etc.,