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4.1
MAINTENANCE & INSPECTION
This section describes basic maintenance and inspection procedures for the VG5.
Periodic Inspection
The VG5 will function longer if it is kept clean, cool and dry, and if all precautions highlighted
in this manual are observed. Periodically inspect the inverter as described in the table below to prevent
accidents and to ensure high performance with high reliability.
To prevent electrical shock, disconnect all power before servicing the inverter. Then wait at least five
minutes after the power supply is disconnected and all LEDs are extinguished.
Component
External Terminals,
Connectors, Mounting
Screws, etc.
Heatsink
Printed Circuit Board
(PCB)
Cooling Fan
Power Components
Smoothing Capacitor
Parts Replacement Schedule
Replace the following parts periodically, for long, safe, trouble-free operation of the VG5:
Parts
Cooling Fan
Smoothing Capacitor
Breakers or Relays
Fuses
Aluminum Electrolytic
Capacitor on PCB Board
Optimum operating conditions:
Ambient temperature: 86°F yearly average
Load factor:
Operation rate:
VG5 Installation & Quick-Start Manual
Check
Loose screws or connectors
Build-up of dust and dirt
Accumulation of conductive dust or oil
For abnormal noise and vibration
Accumulation of dust and dirt
Discoloration or odor
Approximate Interval
2 to 3 years
5 years
--
10 years
5 years
80% or below
12 hours or less per day
Corrective Action
Securely tighten.
Blow with dry, compressed air [39.2
4
10
to 58.8 10
pressure].
Blow with dry, compressed air [39.2
4
10
to 58.8 10
pressure]. If dust and oil cannot be
removed, replace the board.
Replace the cooling fan.
Blow with dry, compressed air [39.2
4
10
to 58.8 10
6kg·cm2) pressure].
Replace the capacitor or the inverter.
Remarks
Replace with new one.
Replace with new one (after inspection).
Decide after inspection.
Replace with new one.
Replace with new one (after inspection).
Chapter 4 - Diagnostics
Maintenance & Inspection
4
2
Pa (4 to 6kg·cm
)
4
2
Pa (4 to 6kg·cm
)
4
Pa (4 to
63
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