MEP-804A Quad fuse problem

[knifeman]

I just purchased this gen set and everything seems fine on start up. Untill I release the start switch at which time the quad fuse blows. I see no glaring problems and need some help.

 

[Guyfang]

When that fuse pops, its a good thing to check out your A1 (AC Volt Regulator). Have you down loaded the TM's, and maybe looked at at the troubleshooting guide?

What size fuse is in the fuse holder?

 

[knifeman]

KTK 3 less than 600v

 

[kloppk]

That's the correct fuse.
Do you get ~120 volts AC at the convenience outlet when you have S1 in the START position while running?

 

[knifeman]

KTK 3 less than 600v

That's the correct fuse.
Do you get ~120 volts AC at the convenience outlet when you have S1 in the START position while running?

114v so NO

 

[kloppk]

114 is close enough. Just needed to see if the set was able to "flash" or not.

 

[knifeman]

I at this time not done any trouble shooting on the A1. I am definitely learning as I go on this piece of equipment. The first time I started it up everything seemed fine for the first couple minutes. Then Phase and voltage both dropped off. And before you ask no I did not throw any switches, turn any knobs, or make any adjustments.

 

[kloppk]

edit... OK then you ought to do the Voltage Regulator testing listed in the -24 TM.

 

[knifeman]

I will download the TM and work on doing that in the next couple days as time permits. Thanks for your help to this point and I will be back with updates ASAP.

 

[knifeman]

Gentlemen. After downloading the TM Voltage Regulator Test procedure this is what I found.
When the meter should have read between 4 and 12 VDC I got 0 VDC
On AC Volts what should have read 210-280 VAC I got 20 VAC
The ohms test was also a failure and the pot was far from smooth in fact so much so it was difficult to get a good reading.

So I assume my next step is to order a new AC Voltage Regulator. If this is the case please let me know.

 

[Guyfang]

That would be my first move.