supply of supply, installation, testing and commissioning of chiller unit.supply, installation, testing and commissioning of chiller unit.,supply, installation, testing and commissioning of chiller unit for dynamic cooling of spin 12 oil (used for hydrostatic bearing) suitable for cylindrical grinding machine of a and b axle machine shop wit h following specifications: (1) voltage: 3 phase 415v ac, 50 hz. (2) cooling capacity: minimum 22,500 kcal/ hr or 7.5 t.r. (3) cooling media: spin 12 oil. (the viscosity of the oil is 11 to 14 cst @ 40 degree celsius). (4) tank: without storage tank. (5) compressor: reciprocating/ scroll/screw type of make emerson copelan d or danfoss only. the capacity shall be chosen as per the application. (6) condenser: air cooled condenser of suitable capacity. (7) evaporator: compact brazed type heat exchanger of make danfoss, sanua or s wep only. the capacity/volume shall be properly assessed as per the application. (8) exhaust fan: roof mo unted exhaust fan of suitable capacity. reputed make like hicool, vericool or superflow shall be used. (9) fi lter drier and other refrigeration accessories shall be of make dry all, danfoss or emersion only. (10) pump : minimum 80 lpm capacity at suitable pressure to pump to at least 05 meter head . pump shall be of reput ed make like grundfos. (11) refrigerant gas: r407c or equivalent with lesser gwp. (12) temperature contr oller: microprocessor based and shall be user friendly. (13) ambient temperature range: upto 50 degrees. ( 14) temperature range of medium: 15 to 40 degrees. (15) required temperature set point: 20 +/-2 degree celsius. (16) control voltage shall be 24v dc. (17) antifreeze probe to protect the evaporator. (18) pressur e switch for high pressure (hp) and low pressure (lp) and with safety interlock. (17) all motors to be provid ed with circuit breakers of suitable rating. (18) all the electrical switch gears used for the control circuits sh all be of reputed make. (19) manufacturers