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Call 1(800)985-6929 for Sales
Hitachi America Ltd. RCU SERIES
7. Check for Maintenance
Check
Check Item
Part
Ambient
Environment
The
Whole
The whole
Equipment
Voltage
Source
Overall
Point
Terminal
Main
Block
Circuit
Smoothing
Condenser
Relay
Resistor
Cooling Fan
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18
Call 1(800)985-6929 for Sales
hitachiacdrive.com
Check Period
Check Point
Daily
Ambient
temperature,
Humidity, Dust,
○
Hazardous
gases,
Oil residue
Etc.
Strange
○
vibration,
Strange Sound
Voltage
○
fluctuations and
Voltage drop
Insulated
resistance
Screw
extracting
Sign
of overheating
Damage
○
Leaking, Strain
Trembling
phenomenon
Crack,
Discoloration
Vibration
○
Strange sound
hitachiacdrive.com
Check Method
Regular
seeing
tasting
thermometer
hygrometer
Seeing, Hearing
Inverter
Input voltage
measurement
Main Circuit
Terminal to
○
Ground Terminal
(500V-Mega use)
○
Seeing
○
Seeing
○
Seeing
Seeing, Hearing
○
Hearing
○
Seeing
Hearing
sales@hitachiacdrive.com
Standards of
judgment
freezing
is
not
allowed
(ambient
temperature
range : –10∼40℃)
condensation is
not allowed at RH
(ambient
humidity :
20∼90 %)
No problem
Within ±10% of
rated voltage
No problem
No damage
sales@hitachiacdrive.com
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