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5.3 Condensation on the machine
In the cold winter morning, when a machine is carried into the installation site,
a large numbers of water drops from the machine may be found.
It is not because of raining nor squirting water on the machine.
When coming into the warm room or a car from the cold place, the glasses may be fogged.
This is the similar phenomenon and called "condensation".
The problems caused by condensation
Rust (on the base, the frame, the cover, screws and other parts where the anti-rust treatment is
not properly done)
→ It negatively affects the appearance, the function, the life expectancy of the machine, and also
results in bad electrical contact.
Defect in the electrical system (e.g. Short circuit on the circuit board or at the connection part due
to penetration of the water).
Caution:
If the machine is connected to the power source with the condensation on the body, the electric portion
breaks. NEVER TURN ON the machine until it is confirmed that no condensation is on the machine.
5.3.1 The formation process of condensation on the machine
The relation between the temperature and the humidity
The figure below shows how the condensation is formed after a cold machine is carried into the
climate-controlled factory (Temperature 20 deg C, Humidity 60%).
When the amount of saturated vapor in the atmosphere per unit exceeds 100%, condensation occurs.
Amount of water vapor (g/m
When the room temperature is 20 deg C and
the humidity is 60%, at what temperature does
the humidity reach 100%?
Service Information
)
3
Dew point
When the temperature
reaches approx. 12 deg C,
the humidity reaches 100%
SI1604009E-002= S20, S10, M20, M10 and D10 installation procedures
30/34
For Service Engineer
100%
60%
Temperature (deg C)
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