DRV-28 inverter
s
-250-
Chapter 8 Maintenance and hardware fault diagnosis
8.1 What this chapter contains
This chapter describes how to carry out preventive maintenance on DRV-28 series inverters.
8.2 Periodical inspection
Little maintenance is required when inverters are installed in environments that meet requirements.
The following table describes the routine maintenance periods recommended by ASTOR.
Subject
Item
Method
Criterion
Ambient environment
Check the temperature, and
humidity, and whether there is
vibration, dust, gas, oil spray,
and water droplets in the
environment.
Visual inspection,
and use instruments
for measurement.
The requirements
stated in this
manual are met.
Check whether there are
foreign matters, such as tools,
or dangerous substances
placed nearby.
Visual inspection
There are no tools
or dangerous
substances placed
nearby.
Voltage
Check the voltage of the main
circuit and control circuit.
Use multimeters or
other instruments for
measurement.
The requirements
stated in this
manual are met.
Keypad
Check the display of
information.
Visual inspection
The characters are
displayed properly.
Check whether characters are
not completely displayed.
Visual inspection
The requirements
stated in this
manual are met.
Main
circuit
Common
Check whether the bolts
loose or come off.
Screw them up.
No exception
occurs.
Check whether the machine
is deformed, cracked, or
damaged, or their color
changes due to overheating
and aging.
Visual inspection
No exception
occurs.
Check whether there are
stains and dust attached.
Visual inspection
No exception
occurs.
Note:
Discoloration of
copper bars does
not mean that they
cannot work
properly.
