Delta HES Series User Manual page 93

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
Main Circuit Part
Check Items
Have any bolts become loose or missing?
Is there any distortion, cracking, breaking of
machine and insulation or discoloration due to
overheating and aging?
Are there any dust or stains?
Main Circuit ~Terminals & Wiring
Check Items
Is there any discoloration and distortion of terminals
and copper plate due to overheating?
Is there any breaking and discoloration of the
protection layer of wires?
Main Circuit~Terminal Unit
Check Items
Is there any damage?
Main Circuit ~Filter Capacitor
Check Items
Is there any leakage, discoloration, crack, and
buckling of exterior cover?
Is the safety valve out? Is there any obvious
expansion of the valve?
Measure the electrostatic capacity according to the
actual requirements
Main Circuit ~Resistor
Check Items
Is there any odor from overheating and breaking of
insulation?
Is there any open circuit?
Is there any damage of the connection end?
Chapter 6 Maintenance|HES Series
Methods and Criterion Daily
Visual and aural
inspection
Tighten the screws
Visual inspection
Visual inspection
Visual inspection
Method of Inspection
Tighten
Visual inspection
Visual inspection
Method of Inspection
Visual inspection
Visual inspection
Method of Inspection
Visual inspection
Method of Inspection
Visual inspection
Visual inspection
Method of Inspection
Visual inspection and
listening
Visual inspection
Measure by hand-held
6-3
Period of inspection
Half One
year Year
○
○
○
○
○
Period of inspection
Daily Half One
year Year
○
○
○
Period of inspection
Daily Half One
year Year
○
○
Period of inspection
Daily Half One
year Year
○
Period of inspection
Daily Half One
year Year
○
○
○
Period of inspection
Daily Half One
year Year
○
○
○