BH227 Drum Unit melt

[tsbservice]

Not sure if this machine has any filters. If it does they may be clogged not letting heat to vent properly

Actually it has 3
Two ozone filters and 1 toner filter.

[copyman]

I've had machines with 200k+ clicks and filters never changed or vac'd and never melted a fuser like that. Like I said in my OP there is more to this story........

[AlaskaCopyTech]

Some questions I would like to know the answers too:
1. What exactly is the fuser temp is service mode set to for every paper type?
2. If you panic stop is it actually that temperature.
3. Is the exterior of the duplex section hot? I ask because I think that is where the fan is?
4. What is the result of doing a sensor check/motor check on the fuser and fan?
5. Further more, when you boot on the machine and do a fuser rotation how hot does the machine get?
6. Are you 100% sure this is an OEM drum?

[Albonline]

to melt the drum like that the fuser cooling fans would have to be going in reverse.

[copyman]

Some questions I would like to know the answers too:
1. What exactly is the fuser temp is service mode set to for every paper type?
2. If you panic stop is it actually that temperature.
3. Is the exterior of the duplex section hot? I ask because I think that is where the fan is?
4. What is the result of doing a sensor check/motor check on the fuser and fan?
5. Further more, when you boot on the machine and do a fuser rotation how hot does the machine get?
6. Are you 100% sure this is an OEM drum?

If the fan stops working machine will throw a code. Monitoring fan rotation and throwing code if fan stops or slows down has been a thing with Kon/Min for as long as I can remember. Small ones on pwr supplies to larger exhaust / cooling fans all will throw codes when not working properly.

[AlaskaCopyTech]

copyman I agree with you but I just want to make sure there isn't more to the story here.

[wjurls]

Something fishy may happen here I never seen anything like that. Is this client problematic. Maybe someone helped with that drum damage and want to blame machine and service 😞

This!! Like Synth said. The drum sits below the fuser. Right above the fuser are some delicate plastic fingers. Why aren't they melted to oblivion?

[copier tech]

This!! Like Synth said. The drum sits below the fuser. Right above the fuser are some delicate plastic fingers. Why aren't they melted to oblivion?

Those claws are made from higher temperature resistant material. The plastic covers are not.

We have these models installed in construction port-a-cabins where the temperature in summer can reach 40c however we've never had any drums melt like yours.

[dibyendu2008]

I have done some settings in service mode now machine is working fine.
First enable cooling fan motor in enhanced service mode by enabling Dip Switch No 4
Second in service mode in Machine tab - Cooling fan stop delay set to maximum.
It works. Thanks for all your support

[Gift]

How the fuck can that happen? Heat from fuser usually raise upwars and would cause other damage before the drum unit will look like this.

Edit: Once I had a case with a cooling fan that has been installed in the wrong direction causing the MFP to throw an error code due to fuser overheating. I think it was a brother MFP. Wouldn't hurt to check the fans though in case this will re-appear.

[Afanasy]

Another guess: perhaps someone installed the fan backwards and the air flow is in the opposite direction.

[tech51]

This should be reported to KM as a serious safety risk. Get them involved and the machine replaced asap.

[dibyendu2008]

Dear friends all fans are in correct position and this is new machine. Customer site is warehouse and no Airconditioner. I had done some below mentioned settings and problem got resolved. Thanks everyone for your kind support


I have done some settings in service mode now machine is working fine.
First enable cooling fan motor in enhanced service mode by enabling Dip Switch No 4
Second in service mode in Machine tab - Cooling fan stop delay set to maximum.
It works. Thanks for all your support

[nullskull]

Dear friends all fans are in correct position and this is new machine. Customer site is warehouse and no Airconditioner. I had done some below mentioned settings and problem got resolved. Thanks everyone for your kind support


I have done some settings in service mode now machine is working fine.
First enable cooling fan motor in enhanced service mode by enabling Dip Switch No 4
Second in service mode in Machine tab - Cooling fan stop delay set to maximum.
It works. Thanks for all your support

why the cooling fan motor wouldn't be on in the first place is strange for me but glad it's working for you now

[copyman]

Like I wrote in my OP something doesn't add up and has to be more to this story......