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Before Starting The Test Run - Mitsubishi Electric PUZ-WM . AA serie Installationshandbuch

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1. Safety precautions

1.4. Before starting the test run

CAUTION:
• Turn on the main power switch more than 12 hours
before starting operation. Starting operation just
after turning on the power switch can severely dam-
age the internal parts. Keep the main power switch
turned on during the operation season.
• Before starting operation, check that all panels,
guards and other protective parts are correctly
installed. Rotating, hot, or high voltage parts can
cause injuries.
• Do not touch any switch with wet hands. Electric
shock may result.
1.5. Using R32 refrigerant outdoor units
CAUTION:
• Do not use refrigerant other than R32 refrigerant. If
another refrigerant is used, the chlorine will cause
the oil to deteriorate.
• Use the following tools specifically designed for use
with R32 refrigerant. The following tools are neces-
sary to use R32 refrigerant. Contact your nearest
dealer for any questions.
Tools (for R32)
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
Electronic refrigerant charging scale
Flare tool
Size adjustment gauge
Vacuum pump adapter
• Do not touch the refrigerant pipes with bare hands
during operation. The refrigerant pipes are hot or
cold depending on the condition of the flowing re-
frigerant. If you touch the pipes, burns or frostbite
may result.
• After stopping operation, be sure to wait at least five
minutes before turning off the main power switch.
Otherwise, water leakage or breakdown may result.
• Be sure to use the correct tools. If dust, debris, or
moisture enters the refrigerant lines, refrigeration
oil deterioration may result.
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