Specifications include, but are not limited to: 1- RECOVER REFRIGERANT FROM EXISTING REFRIGERATION SYSTEM [2] 2- REMOVE EXISTING EVAPORATORS [2] AND WATER COOLER CONDENSING UNITS [2]- TO SALVAGE 3- FLUSH EXISTING REFRIGERATION PIPING AND PURGE WITH NITROGEN TO REMOVE ANY RESIDUE OIL AND CONTAMINATES IN SYSTEM. 4- INSTALL REPLACEMENT EVAPORATORS [2] AND WATER COOLED CONDENSING UNITS [2] OF LIKE CAPACITY AND VOLTAGE 5- MAKE PIPING CONNECTIONS WHILE FLOWING NITROGEN 6- MAKE ELECTRICAL CONNECTION AT EVAPORATORS [2] AND WATER COOLED CONDENSERS[2] 7- PRESSURIZE SYSTEMS [2] WITH NITROGEN @ 250 PSI AND ALLOW TO STAND FOR 24 HRS . TO ENSURE THAT THERE ARE NO LEAKS IN MADE BRAZED JOINTS 8- EVACUATE SYSTEMS [2] TO 500 MICRONS 9- PRECHARGE SYSTEM [2] WITH REFRIGERANT 10- START, CHECK AND RECORD EACH SYSTEM'S PERFORMANCE INCLUDING OPERATING PRESSURE , T.D. ACROSS EVAPORATOR, DEFROST CLOCK SETTINGS, DEFROST HEATER AMPS AND CYCLE OFF TEMPERATURE. NOTE: CONDENSING UNITS [2] ARE TO BE INSTALLED IN EQUIPMENT ROOM AT SAME LOCATION AS PRESENT CONDENSING UNITS.[2]