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10. MAINTENANCE AND INSPECTION
10.1 Daily Inspection
Dairy inspection items recommended are shown in Table 10.1.
Table 10.1 Dairy inspection
Item Check item Content of inspection Judgement Action
1
Installation condition of the
base unit
Confirm if installation
screws are not loose or
cover is not detached.
It is installed securely. Retighten the screw.
2
Installation condition of the
I/O modules
Confirm if the module
mounting screw is firmly
tightened.
The mounting screws
are firmly tightened.
Firmly tighten the
module mounting
screw.
3 Connection condition
Loosening of terminal
screw
No loosening.
Retighten the terminal
screw.
Proximity of solderless
terminals.
There is an
appropriate distance.
Correct the distance.
Connector areas of
extension cable
No loosening at
connectors.
Retighten the
connector fixing
screw.
4
LEDs on the main module
POWER LED Confirm it is on.
The LED is on.
(Faulty if it is off.)
Refer to Section
11.2.2.
MODE LED Confirm it is on.
The LED is on.
(Faulty if it is off.)
Refer to Section
11.2.3.
RUN LED
Confirm it is on in the
"RUN" state.
The LED is on.
(Faulty if it is off or
flickering.)
Refer to Section
11.2.4
Section 11.2.5.
ERR. LED
Confirm it is on when an
error occurs.
This LED is off.
(On when an error
occurs.)
Refer to Section
11.2.6
Section 11.2.7.
Input LED
Confirm if it correctly
turns on and off.
The LED is on when
input is on, and off
when input is off.
(Faulty other than the
above.)
Refer to Section
11.4.1.
Output LED
Confirm if it correctly
turns on and off.
The LED is on when
output is on, and off
when output is off.
(Faulty other than the
above.)
Refer to Section
11.4.2.
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