Self-supporting, galvanized steel frame protected with polyester powder painting. Panels are easily removable for maintenance and service activities.
Hermetic «scroll» type with overload protection by a klixon and complete with oil sight glass. They are installed on vibration absorbing rubber and placed within a closed compartment to reduce sound level and to allow service and maintenance activities while unit is in operation.
Braze-welded plate type with one or two independent refrigerant circuits and one water circuit. The circuit are made to guarantee an homogeneous cooling of all the water flow even during partial load. The insulation is made of flexible closed-cells lining.
As protection, a flow switch is recommended to mount to stop the unit in case of no water circulation.
CONDENSER / FREE-COOLING
Condenser: one or two condensers made of copper tubes and aluminium finned coils. Water free-cooling coil: one or two coils made of copper tubes and aluminium finned coils.
Axial fans with aerodynamic outline blade section directly coupled to a three phase electric motor with external rotor. A safety fan guard is fitted on air flow discharge.
Each unit is supplied with one or two independent refrigerant circuits; each one includes: filter dryer, sight glass, electronic thermostatic expansion valve, service valve. To protect the refrigerant circuit the following devices are installed: man. reset HP-switch, aut. reset LP-switch and antifreeze thermostat. Besides, if necessary: man. reset safety pressure switch and safety valve.
With protection grade IP54 the el. board is mounted in the compressor chamber. Service activities can be done while the unit is in operation. It includes: main circuit automatic breaker with locking door device, compressors and fans contactors and relé, auxiliary circuit transformer. Microprocessor to control automatically the unit with a visual system to display the function as well as failures.