Hi Guys
Long time since I last posted but I have a problem I'm stuck on.
My company uses a few industrial hand held glue guns.
We have been experiencing repeated problems where the glue gun is failing on the earth continuity test. (Full test every 3 months)
Typically 0.26 - 0.56 ohms.
We have opened the glue guns up and the earth reading is fine on the cable entering the glue gun.
It is the short section of internal earth wire that is bolted to the body of the heating element that is failing.
I'm guessing as it's connected to the hot body (190 degrees Celsius) that it may be causing the copper to degrade.
The only exposed metal part is the tip (we clean this thoroughly before testing).
We have experienced the same problem on different glue guns, it seems to be an inherent design flaw.
Has anyone else experienced this problem, as i'm guessing it must be a common problem.
Does anyone have any solutions apart from replacing the internal earth wire every 3 months?
Can anyone suggest a replacement glue gun that doesn't have this problem (They are high power ones typically 300-500w).
I was hoping I could find a class II one no luck and doubt they exist.
Any suggestions would be appreciated.
Thanks
Nick
Long time since I last posted but I have a problem I'm stuck on.
My company uses a few industrial hand held glue guns.
We have been experiencing repeated problems where the glue gun is failing on the earth continuity test. (Full test every 3 months)
Typically 0.26 - 0.56 ohms.
We have opened the glue guns up and the earth reading is fine on the cable entering the glue gun.
It is the short section of internal earth wire that is bolted to the body of the heating element that is failing.
I'm guessing as it's connected to the hot body (190 degrees Celsius) that it may be causing the copper to degrade.
The only exposed metal part is the tip (we clean this thoroughly before testing).
We have experienced the same problem on different glue guns, it seems to be an inherent design flaw.
Has anyone else experienced this problem, as i'm guessing it must be a common problem.
Does anyone have any solutions apart from replacing the internal earth wire every 3 months?
Can anyone suggest a replacement glue gun that doesn't have this problem (They are high power ones typically 300-500w).
I was hoping I could find a class II one no luck and doubt they exist.
Any suggestions would be appreciated.
Thanks
Nick