Air Handling Units Installation Commissioning Maintenance
All-pole disconnection of power supply. Minimum waiting period of frequency converter 15 minutes (due to remaining voltage). Use a switch-off device to prevent unexpected start-up (e.g. service switch) according to DIN EN 60204-1 (VDE 0113-1). Standstill of all moving parts, especially fan impeller, belt drive, motor, rotary heat