Toyotomi CTN/CTG-328W User Manual page 33

Safety precautions for installing and relocating the unit
To ensure safety, please be mindful of the following precautions.
WARNING
• When installing or relocating the unit, be sure to keep the
refrigerant circuit free from air or substances other than the
specifi ed refrigerant.
Any presence of air or other foreign substance in the refrigerant
circuit will cause system pressure rise or compressor rupture,
resulting in injury.
• When installing or moving this unit, do not charge the refrigerant
which is not comply with that on the nameplate or unqualifi ed
refrigerant.
Otherwise, it may cause abnormal operation, wrong action,
mechanical malfunction, or even serious safety accident.
• When refrigerant needs to be recovered during relocating or
repairing the unit, be sure that the unit is running in cooling
mode. Then, fully close the valve at high pressure side (liquid
valve). About 30-40 seconds later, fully close the valve at
low pressure side (gas valve), immediately stop the unit and
disconnect power. Please note that the time for refrigerant
recovery should not exceed 1 minute.
If refrigerant recovery takes too much time, air may be sucked
in and cause pressure rise or compressor rupture, resulting in
injury.
• During refrigerant recovery, make sure that liquid valve and
gas valve are fully closed and power is disconnected before
detaching the connection pipe.
If compressor starts running when stop valve is open and
connection pipe is not yet connected, air will be sucked in and
cause pressure rise or compressor rupture, resulting in injury.
• When installing the unit, make sure that connection pipe is
securely connected before the compressor starts running.
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