Industrial air coolers with a galvanized steel coil block. Suitable for cooling and freezing applications in medium to large cold rooms. Capacities 5 to 125 kW.     The Helpman ZLA series is a wide and flexible range of heavy-duty industrial air coolers for both cooling and freezing applications in medium to large cold rooms. Suitable for a wide range of applications, with a special focus on meat products. - Evaporating temperatures : +5 to -40°C - Refrigerants : ammonia (R-717), brine - Nom. capacities : 5 - 125 kW (SC2, higher on request) - Air volume : 4,000 up to 63,000 m3/h