4-1 Fuse Replacement
Some models are equipped with air switch, which is a reset-able breaker and does not require a fuse. The rest of the
models are equipped with a fuse. If the fuse is blown, the power supply will not turn on. It is a good idea to determine
and correct the cause of the blown fuse, then replace only with a fuse of the correct rating and type. The fuse is located
on the rear panel where power cord is plugged into the device, as shown below:
Warning: For continued fire protection, replace fuse only with fuse of the specified type and rating. All
replacement fuses must be slow-blowing type.
4-2 Rest OV Protection
When OV light is red, the power supply is in OV protected state, and will not respond to user input until the power
supply is properly reset. To reset the power supply, follow the procedures below:
1) Disconnect the load and turn the power supply off.
2) Turn the OV limit (11) to the maximum position clockwise; or leave it to the correct setting if you have
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