Low Ambient Start-up
Inverters include a temperature control which allows them to withstand ambient temperatures down to -20°C. However
they should not be switched on at temperatures lower than 0°C unless the following procedure is executed:
• Open the switchbox (only trained technicians should perform this operation)
• Open compressor fuses (by pulling the fuse holders) or compressor circuit breakers
• Power on the chiller
• Keep the chiller powered on for 1 hour at least (this allows inverter heaters to warm-up the inverter).
• Close fuse holders
• Close the switchbox
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