Estun E21 - Page 34

E21 Installation Manual
31
No.
Inspection item
Standard
content
Standard
specification
Treatment
3
Install
Tension,
mobility
Mobile module
Module must
be installed
securely.
Secure the
screw. If
CPU and I/O
module
loses, fasten
them by
screws.
Dust and
foreign matter
attachment
Visual
observation
No dust or
foreign matter
is allowed.
Remove and
clean.
4
Connection
status
Tightness of
terminal screw
Rotate by
screwdriver
No loosening
Screw
Whether
compression
type terminal is
close
Visual
inspection
Compression
type terminal
must be fixed
between
proper
intervals.
Adjust
Tightness of
joint
Visual
inspection
No loosening
Tighten
screw
5
Relay
Multimeter,
visual
inspection
Whether
contact pull-in
is normal. Coil
resistance
Replace
relay.