Maintenance And Inspection - Delta HES Series Instructions For Use Manual

Chapter 6 MaintenanceHES Series
6-1 Maintenance and Inspections
Before the check-up, always turn off the AC input power and remove the cover. Wait at least 10
minutes after all display lamps have gone out, and then confirm that the capacitors have fully
discharged by measuring the voltage between DC+ and DC-. The voltage between DC+ and
DC-should be less than 25VDC.
Ambient environment
Check Items
Check the ambient temperature, humidity,
vibration and see if there are any dust, gas,
oil or water drops
If there are any dangerous objects
Voltage
Check Items
Check if the voltage of main circuit and
control circuit is correct
Digital Keypad Display
Check Items
Is the display clear for reading
Any missing characters
Mechanical parts
Check Items
If there is any abnormal sound or vibration
If there are any loose screws
If any part is deformed or damaged
If there is any color change by overheating
If there is any dust or dirt
Methods and Criterion
Visual inspection and
measurement with equipment
with standard specification
Visual inspection
Methods and Criterion
Measure with multimeter with
standard specification
Methods and Criterion
Visual inspection
Visual inspection
Methods and Criterion
Visual and aural inspection
Tighten the screws
Visual inspection
Visual inspection
Visual inspection
6-2
Maintenance
Period
Half One
Daily
Year Year
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Maintenance
Period
Half One
Daily
Year Year
○
Maintenance
Period
Half One
Daily
Year Year
○
○
Maintenance
Period
Half One
Daily
Year Year
○
○
○
○
○