TECO N3 Series - Routine Periodic Inspection

N3 Drive Operations Manual
Routine Periodic Inspection 97
23.0 Routine periodic inspection
To ensure safe and secure operations, check and maintain the inverter and motor at regular intervals, the table below
lists the suggested items to be checked on a periodic basis.
Items
Details
Check
Methods
Criteria
Action
Daily
Yearly
Ambient
conditions
around the
drive
Confirm that the
temperature and
humidity is within
specification
x
Measure with
thermometer
and hygrometer
Temperature:
-10 – 40
o
C
(14-120℉)
Humidity:
Below 95% RH
Improve the
ambient or
relocate the
drive.
Are there
flammable or
corrosive materials
in the vicinity?
x
Visual check
Keep area clear
Installation and
grounding of
the inverter
Any excessive vibration
from the machine ?
x
Visual, hearing
check
No vibration
Secure hardware
Is the ground
bonding resistance
correct?
x
Measure the
resistance
with a multi-
tester
200V series: below
100Ω
400V series: below
10Ω
C grounding
Input power
voltage
Is the voltage correct?
x
Measure the
voltage with a
multi-tester
Voltage must
conform with the
specifications
Correct input
voltage
External
terminals and
internal
mounting
screws of the
inverter
Are secure parts
loose?
x
Visually check &
Check with a
screwdriver
Secure terminals
and no rust present
Secure or return
for repair
Is the terminal base
damaged?
x
Visual rust stains
present?
x
Internal wiring
of the inverter
Any unusual bends or
breaks?
x
Visual check
No abnormalities
Replace or return
for repair
Any damage of the
wire insulation?
x
Heat sink
Excessive dust or
debris
x
Visual check
Clean surfaces
Clean up debris
or dust
Printed circuit
boards &
power
modules
Excessive dust or
debris.
x
Visual check
Clean surfaces with
no discoloration.
Clean or replace
the circuit board
or power
modules
Discolored,
overheated, or
burned parts
x
Cooling fan
Unusual vibration
and/or noise
x
Visual or
hearing check
Clean surfaces
Replace the
cooling fan
Excessive dust or
debris
x
Visual check
Clean fan
Capacitor
Any unusual odor or
leakage
x
Visual check
No abnormalities
Replace
capacitor or
inverter
!
DANGER
To prevent injury to personnel and damage to the equipment, wait 5 minutes after
the “charge indicator” extinguishes before touching any parts.