Daily Inspection; Periodic Inspection - Mitsubishi Electric GT11 User Manual

17.1 Daily Inspection

Daily inspection items
No. Inspection Item
1 GOT mounting status
Loose terminal screws
Connection Proximate solderless
2
status terminals
Loose connectors
Dirt on protection sheet
Usage
3
Foreign material
status
attachment
Refer to the following for the model names of the protection sheet or the replacement procedure.
Section 8.5 Protective Sheet

17.2 Periodic Inspection

Yearly or half-yearly inspection items
The following inspection should also be performed when equipment has been moved or modified or the
wiring changed.
No. Inspection Item
Ambient
temperature
Surrounding
1
Ambient
environment
humidity
Atmosphere
2 Power supply voltage check
Looseness
Mounting
3
Dirt, foreign
status
matter
Loose
terminal
screws
Connection Proximate
4
status solderless
terminals
Loose
connectors
5 Battery
Inspection
Method
Check for loose
mounting screws.
Retighten screws
with screwdriver
Visual check
Visual check
Visual check
Visual check
Inspection Method
Display section 0 to 50°C
Make measurement
Other portions
with thermometer or
hygrometer
10 to 90%RH
Measure corrosive
gas
No corrosive gas
24VDC Measure
voltage across 20.4 to 26.4VDC
terminals.
Move module Should be mounted firmly
No dirt, foreign matter
Visual check
sticking
Retighten screws with
Not loose
screwdriver
Visual check Proper intervals
Visual check Not loose
Check the system
alarm (error code:
500) report on the
(Preventive maintenance)
Alarm Information
screen (Section 13.4
Alarm Information).
Criterion
Retighten screws within the
Securely mounted
specified torque range
Not loose Retighten terminal screws
Proper intervals Correct
Retighten connector fixing
Not loose
screws
Not outstanding Replace with new one
No foreign matter
Remove clean
sticking
Criterion
For use in control panel,
0 to 55°C
temperature inside control
panel is ambient
temperature
Change supply power
Retighten screws
Remove, clean
Retighten terminal screws
Correct
Retighten connector fixing
screws
Replace with new battery
when the current battery
has reached the specified
life span, even if battery
voltage is not displayed.
17.1 Daily Inspection
17
Action
18
Action
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