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16. Troubleshooting
To maintain A.V.R. is easier to proceed only by use of a three proposed (digital type) electric meter.
Phenomenon
1.
Output power interrupted
2.
Temperature increasing and
Fan damaged.
3.
Output current much more than
rated current.
4.
Output voltage higher.
5. Output voltage lower.
When A.V.R. is troubled and at same time the machine installation should not be stopped and user
also hard to find out the trouble reason. Please change over the knife switch located within the
installation to bypass for temporarily stopping operation (referred to page 4section 2), and then
contact us immediately.
Checking Method
Is power failure?
Is NFB or electromagnetic
switch jumped?
Check whether the fan stops
operation.
Is there a trouble for load?
Do there have new equipment
installed?
Is current meter troubled?
Is PCB troubled?
Does output voltage happen to
phase lagged?
Is voltage meter troubled?
Is VR loose?
Is current overloaded?
Is three-phase too unbalanced?
Is voltage meter troubled?
Is VR loose?
- 19 -
A.V.R. operation manual
Troubleshooting
Turn on the power supply
again.
If NFB or electromagnetic
switch jumped is resulted from
overload, then check whether
the load power circuit is
normal.
Interrupt power and remove fan
terminal, and renew a fan
within short-term.
Please check the load.
Please renew a A.V.R. with
larger capacity.
Renew a current meter.
Renew PCB.
Repair input power supply
again.
Renew a voltage meter.
Adjust VR to rated value.
Remove some load equipment.
Redistribute load.
Renew a voltage meter.
Adjust VR to rated value.
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