Toyotomi CTN/CTG-328W User Manual page 45

2.2
2.3
2.4
2.5
Maintenance notes
• Check whether the maintenance area or the room area meet the
requirement of the nameplate.
- It's only allowed to be operated in the rooms that meet the requirement of
the nameplate.
• Check whether the maintenance area is well-ventilated.
- The continuous ventilation status should be kept during the operation
process.
• Check whether there is fi re source or potential fi re source in the maintenance
area.
- The naked fl ame is prohibited in the maintenance area; and the "NO
SMOKING" warning board should be hanged.
• Check whether the appliance mark is in good condition.
- Replace the vague or damaged warning mark.
Welding
• If you should cut or weld the refrigerant system pipes in the process of
maintaining, please follow the steps as below:
a. Shut down the unit and cut power supply
b. Eliminate the refrigerant
c. Vacuuming
d. Clean it with N
e. Cutting or welding
f. Carry back to the service spot for welding
The refrigerant should be recycled into the specialized storage tank.
Make sure that there isn't any naked fl ame near the outlet of the vacuum pump
and it's well-ventilated.
Filling the refrigerant
• Use the refrigerant fi lling appliances specialized for R32. Make sure that
different kinds of refrigerant won't contaminate with each other.
• The refrigerant tank should be kept upright at the time of fi lling refrigerant.
41.5 15
45.4 16.3
49.4 17.8
53.6 19.3
gas
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45
4.6 3.1
5 3.4
5.5 3.7
6 4
GB