Ulvac DAU-20 - Location; Electric Wiring; Fluctuations in the Power Voltage and Frequency; Fig.2 Change Region of the Voltage and Frequency

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f) Not subject to direct sunlight.
g) No danger of fire.
h) Maximum ambient temperature of 40°C during assembly of pump.
i) Free of soot and oil.
j) Free of splashing or flooding.
k) Keep it indoor ventilated.
l) When installing the pump, avoid mounting a vacuum pump directly on the base. Employ
anti-vibration rubber between the base and the vacuum pump.
3.3 Location
The pump should be installed level in a location with minimal dust and humidity. This location
should be selected in consideration of ease of installation and removal, inspection, and cleaning.
Particular attention should be paid to ambient temperature when fitting the pump to equipment.
Use anti-vibration rubbers to isolate the pump from vibrations in the equipment. See 3.2
Environmental Conditions for Installation, Storage, and Operation for details.
3-4 Electric Wiring
(1) The wire diameter of power cord must be φ0.75mm
2
or more.
(2) We recommend end-user to equip protection device such as earth leakage breaker motor
breaker on electric wiring to prevent from motor burnout which may occur by overcurrent.
(3) The electric wire which will be connected to the earth must be a green colored insulating
coating wire, with or without yellow stripes. Its wire diameter must be φ0.75mm
2
or more.
Notice: Before operating wire connection, be sure to unplug the power plug.
3.5 Fluctuations in the power voltage and frequency
Standard: Rotation electricity machine general rules
JIS C 4034-1:1999，JEC-2137-2000
To the voltage change and frequency change in
Domain A, in main rated values, it operates
continuously, and can be used practically
convenient, and to the voltage change and
frequency change in Domain B, it shall operate
with main rated values and shall be used practically
convenient.
However, operation with "it is convenient and safe
is maintained on "practical use, it means not
resulting in the grade which shortens a life
remarkably, and the characteristic, a temperature
rise, etc. do not apply correspondingly in the state
of rating. Moreover, main rating shows rated torque
(N･m).
Fig. 2 Change region of the voltage and frequency