Jsampo85
New member
- 18
- 0
- 1
- Location
- Fall River/MaA
Ohhhh ok i gotcha, i had read somewhere that you were supposed to read voltage across those 2 pins. Safe travels while you are on the road!
-
Steel Soldiers now has a few new forums, read more about it at: New Munitions Forums!
mep804a has no output
- Thread starter gmanar15
- Start date
TacMac2012
Active member
- 182
- 134
- 43
- Location
- Wallburg, NC
Did you ever figure out your issue?
- 15,816
- 21,957
- 113
- Location
- Burgkunstadt, Germany
Thats a good question.
TacMac2012
Active member
- 182
- 134
- 43
- Location
- Wallburg, NC
I am having the same issue! It worked and ran my house yesterday, today no such luck... No voltage or hz
MAdams
Active member
- 373
- 123
- 43
- Location
- San Dimas, CA
Unfortunately I never found out what was wrong. Guyfang was a huge help but in the end I didn't have the time to dig deeper and I sold the unit. The guy who bought it reworks them for the concrete cutting industry and his diagnosis was the gen head was bad.
- 15,816
- 21,957
- 113
- Location
- Burgkunstadt, Germany
Sorry to hear that.
- 1,168
- 376
- 83
- Location
- Guymon, OK
unlike button
Texasbosshawg
New member
- 5
- 0
- 0
- Location
- TX
i got power to one side of the AC contactor but not the back side. I got about 210 volts Ac on the front side and not much of anything on the back side.. Ive been having **** finding the correct trouble shoot in the manual..
My gen starts but voltage and hertz ONLY go up when holding the switch to start for 6 sec. One i release they go to nothing.. I checked the fuse on the voltage regulator, its good. I checked for 11 volts on pin 7 on my s1 switch and its present. I disconnected terminal 1 wire 141 A on the voltage regulator and started it and.. my under voltage light is still on.. My interrupter wont stay closed. whats next if my AC Contactor is getting roughly 19-24v AC on both sides?
My gen starts but voltage and hertz ONLY go up when holding the switch to start for 6 sec. One i release they go to nothing.. I checked the fuse on the voltage regulator, its good. I checked for 11 volts on pin 7 on my s1 switch and its present. I disconnected terminal 1 wire 141 A on the voltage regulator and started it and.. my under voltage light is still on.. My interrupter wont stay closed. whats next if my AC Contactor is getting roughly 19-24v AC on both sides?
Texasbosshawg
New member
- 5
- 0
- 0
- Location
- TX
i been trying to reach you on another thread same issue. I was doing the AC contactor troubleshoot you had suggested.. i got 19-24volts AC on both sides, now trying to test the magnetic pickup but cant find what it looks like and your manual must be different because when i got to figure 18 item 19 its something else.. do you have a pic. or can you give me the troubleshoot. These manuals have been the worst to find stuff in?
Original issue is the same. I let off my s1 switch after 6 seconds and my voktage and hertz drop to nothing. Fuse for the voltage regulator is good, tested pin 7 on S1 switch it was 11volts when turned to the start position. so here i am trying to figure out where this magnetic pick up is?
Original issue is the same. I let off my s1 switch after 6 seconds and my voktage and hertz drop to nothing. Fuse for the voltage regulator is good, tested pin 7 on S1 switch it was 11volts when turned to the start position. so here i am trying to figure out where this magnetic pick up is?
Texasbosshawg
New member
- 5
- 0
- 0
- Location
- TX
i got power to one side of the AC contactor but not the back side. I got about 210 volts Ac on the front side and not much of anything on the back side.. Ive been having **** finding the correct trouble shoot in the manual..
My gen starts but voltage and hertz ONLY go up when holding the switch to start for 6 sec. One i release they go to nothing.. I checked the fuse on the voltage regulator, its good. I checked for 11 volts on pin 7 on my s1 switch and its present. I disconnected terminal 1 wire 141 A on the voltage regulator and started it and.. my under voltage light is still on.. My interrupter wont stay closed. whats next if my AC Contactor is getting roughly 19-24v AC on both sides?
Texasbosshawg
New member
- 5
- 0
- 0
- Location
- TX
I disconnected 16 and 17 got 3.8. Now i need to know what that magnetic pick up looks like so i can adjust it.. do you have a pic? when i google it tons of stuff comes up but nothing that looks like what youre describing and when i search it in the manual i turn up nothing?
bgoebel
New member
- 22
- 0
- 1
- Location
- maxwell, nm
I may be having similar issue with MEP 804a
Mine produces power sometimes while testing but now ready to hook to load and its not. Sometimes getting power at start up sometimes not so thought maybe it was the circuit interrupter/contactor. Checked the magnetic pickup and put it back in but haven't done voltage testing. I didn't see the previous post with the detailed instructions til now. Engine will not start now. Help? Guyfang?
Mine produces power sometimes while testing but now ready to hook to load and its not. Sometimes getting power at start up sometimes not so thought maybe it was the circuit interrupter/contactor. Checked the magnetic pickup and put it back in but haven't done voltage testing. I didn't see the previous post with the detailed instructions til now. Engine will not start now. Help? Guyfang?
- 15,816
- 21,957
- 113
- Location
- Burgkunstadt, Germany
Back up. One problem at a time.
Have you downloaded the TM's? Have you looked at them.
Is this set new to you?
Has it ever worked right?
The "sometimes" making power could be because you do not hold S1 in the start position long enough.
You need to measure how many VAC you have out of the Magpick up. 3 VAC will do it. Then it might start. FIRST test the Mag pickup. Then we can go another step.
bgoebel
New member
- 22
- 0
- 1
- Location
- maxwell, nm
ok guyfang
appreciate your help
I have looked thru some of the TMs on green mountain generators.com. Did not find your reference for the mag pickup, so maybe there are older and newer versions of the manuals.
This is new set to me. Bought two months ago thru govplanet auction, out of las cruces NM
I got good voltage out of it first time i tried it, just using a drill on 110 outlet, and on all 3 legs of 3 phase 208 volts using the meters on panel. I dont' remember if i used my tester on output lugs.
Last week had another guy hookup a panel to wire to a 10 hp irrigation pump, which i tried to get going yesterday. When he was working on it he had no power until he used the "battle short" switch. He didn't know what that switch was for, maybe i will regret that he used it. After restarting the generator at one point he got power. That made me latch onto the magpickup test that you had recommended on this group earlier.
This morning I checked and reset the mag pickup, got it as close to 3 volts as i could. I had it out too far yesterday. it is clean, but appears short. There is very little plastic protruding past the threaded housing. I have a good fluke tester, the voltage varies from 2.9 to a little over 3.
Started right up then, but just low voltage output, circuit interrupter not closing, Undervoltage light on.
appreciate your help
I have looked thru some of the TMs on green mountain generators.com. Did not find your reference for the mag pickup, so maybe there are older and newer versions of the manuals.
This is new set to me. Bought two months ago thru govplanet auction, out of las cruces NM
I got good voltage out of it first time i tried it, just using a drill on 110 outlet, and on all 3 legs of 3 phase 208 volts using the meters on panel. I dont' remember if i used my tester on output lugs.
Last week had another guy hookup a panel to wire to a 10 hp irrigation pump, which i tried to get going yesterday. When he was working on it he had no power until he used the "battle short" switch. He didn't know what that switch was for, maybe i will regret that he used it. After restarting the generator at one point he got power. That made me latch onto the magpickup test that you had recommended on this group earlier.
This morning I checked and reset the mag pickup, got it as close to 3 volts as i could. I had it out too far yesterday. it is clean, but appears short. There is very little plastic protruding past the threaded housing. I have a good fluke tester, the voltage varies from 2.9 to a little over 3.
Started right up then, but just low voltage output, circuit interrupter not closing, Undervoltage light on.
bgoebel
New member
- 22
- 0
- 1
- Location
- maxwell, nm
Guyfang, if you are in germany, time difference may be an obstacle. When do you look at this stuff? Could we communicate by phone text message?
- 15,816
- 21,957
- 113
- Location
- Burgkunstadt, Germany
I look often during the day and at night. I hate phone text, as my sausage fingers and the tiny keys are a problem. And I am famous for leaving my phone on my desk all day.
OK, so the adjustment fixed the starting problem.
Next, are you holding the S1 in the start position long enough? If not, the S1 can not give the main gen its initial excitation. So, hold it in the start position 5-6 seconds longer. You can not grind the starter. The mag pickup cuts out the starter before that can happen. 95% of the no AC output problems are caused by not holding the S1 long enough. And since you sometime have power, and sometimes not, this sounds like the problem.
If the S7 battle short switch got you power, then was there a fault light on the A2 malfunction indicator? Did you reset the A2, if there was a fault light?
What is low voltage output to you?
Did you reset the A2 fault Under Voltage, and the light go out? and stay out?
Has the Quad circuit upgrade been done on your set? If so, is the fuse good?
OK, so the adjustment fixed the starting problem.
Next, are you holding the S1 in the start position long enough? If not, the S1 can not give the main gen its initial excitation. So, hold it in the start position 5-6 seconds longer. You can not grind the starter. The mag pickup cuts out the starter before that can happen. 95% of the no AC output problems are caused by not holding the S1 long enough. And since you sometime have power, and sometimes not, this sounds like the problem.
If the S7 battle short switch got you power, then was there a fault light on the A2 malfunction indicator? Did you reset the A2, if there was a fault light?
What is low voltage output to you?
Did you reset the A2 fault Under Voltage, and the light go out? and stay out?
Has the Quad circuit upgrade been done on your set? If so, is the fuse good?
bgoebel
New member
- 22
- 0
- 1
- Location
- maxwell, nm
Yes I am holding in the start position up to 15 seconds
i was not present when my helper (who is better at this than I am) got power. The battle short switch may have been coincidental to getting power. He says the low voltage light was lit all the time, but that doesn't make sense when he did have power, meaning 208 volts at the meter on the machine and at the lugs
A2 malfunction indicator is the same as the "fault indicator" on left side of control panel? I have pushed the reset/test button often. it has not made fault light go out.
Low voltage is 14 VAC
I don't know about the quad circuit upgrade. Where is the fuse?
i was not present when my helper (who is better at this than I am) got power. The battle short switch may have been coincidental to getting power. He says the low voltage light was lit all the time, but that doesn't make sense when he did have power, meaning 208 volts at the meter on the machine and at the lugs
A2 malfunction indicator is the same as the "fault indicator" on left side of control panel? I have pushed the reset/test button often. it has not made fault light go out.
Low voltage is 14 VAC
I don't know about the quad circuit upgrade. Where is the fuse?
- 15,816
- 21,957
- 113
- Location
- Burgkunstadt, Germany
The Quad circuit fuse is normally located next to the A1 volt regulator. Its a big fat fuse. Pop it out and test it. If its good, pop it back in. If you are still not sure what I mean, take a picture of the inside of the control cube, (cabinet) and post it.
A2 is the fault indicator. If you look at the doors of the set, you will find schematics for the set. If I call out a part, and you don't know it, try looking at the schematics.
The S7, (battle short) switch is made to override some of the generator safety features. So its possible that he could have had it on and bypassed the relay. Then you could have 208 VAC on the meter and lugs.
If the quad fuse is good, pop it back in.
Turn S1 to the start position. AND HOLD IT THERE! Do you have normal Volts on the AC meter?
Flip on the S7.
Release S1.
Do you get a under volt light on the A2? Do you have normal volts on the AC volt meter?
A2 is the fault indicator. If you look at the doors of the set, you will find schematics for the set. If I call out a part, and you don't know it, try looking at the schematics.
The S7, (battle short) switch is made to override some of the generator safety features. So its possible that he could have had it on and bypassed the relay. Then you could have 208 VAC on the meter and lugs.
If the quad fuse is good, pop it back in.
Turn S1 to the start position. AND HOLD IT THERE! Do you have normal Volts on the AC meter?
Flip on the S7.
Release S1.
Do you get a under volt light on the A2? Do you have normal volts on the AC volt meter?
bgoebel
New member
- 22
- 0
- 1
- Location
- maxwell, nm
Quad fuse is good
Started, held in start position, low volts on AC meter (25 or less)
Flip on S7, no difference, release S1 no difference
Under volt light on A2 is lit.
Started, held in start position, low volts on AC meter (25 or less)
Flip on S7, no difference, release S1 no difference
Under volt light on A2 is lit.
- 15,816
- 21,957
- 113
- Location
- Burgkunstadt, Germany
OK.
Start the set up, and while doing that, measure to see if you have 24 VDC on S1, pin seven, AS LONG AS YOU HOLD UP S1 in the start position. This is the excitation voltage, to the main gen. It comes from S1-7.
Start the set up, and while doing that, measure to see if you have 24 VDC on S1, pin seven, AS LONG AS YOU HOLD UP S1 in the start position. This is the excitation voltage, to the main gen. It comes from S1-7.