Re: [CAD_CAM_EDM_DRO] edm fluid fires
Posted by
ptengin@a...
on 2001-08-19 13:37:32 UTC
In a message dated 8/19/01 2:00:16 AM Hawaiian Standard Time,
sutherland_oz@... writes:
<< know
of one guy who used to leave it running all night unattended, had a
heat sensor connected to 2 fire extinguishers. Don't know how he
slept. >>
Group,
I was running a CNC wood router and had a fire. My Z axis stepper had lost
steps and allowed the cutter to hit a steel fixture. The sparks it threw out
lit a few wood chips on fire. The dust collector was off thank goodness or it
could have turned into a blast furnace. My solution was to purchase fire
extinguishers designed for motor boat engine compartments. Looks like a
small extinguisher but has a sprinkler head where the nozzle/handle usually
goes. Most any commercial fire suppression company sells these. They are
designed to put out not only the fire but have an electrical switch/contact
that opens on discharge. This is wired to the ignition on a gasoline engine
or snuffing device on a diesel. Probably could sound an alarm also. On my
CNC, it would open the e-stop circuit causing the dust collector to stop
also. Not fool proof but one more step in the safer direction. Seems to me a
must for a flammable fluid EDM setup. I will have one mounted over the
machine when I build mine!!
Peter
THRD, Inc.
sutherland_oz@... writes:
<< know
of one guy who used to leave it running all night unattended, had a
heat sensor connected to 2 fire extinguishers. Don't know how he
slept. >>
Group,
I was running a CNC wood router and had a fire. My Z axis stepper had lost
steps and allowed the cutter to hit a steel fixture. The sparks it threw out
lit a few wood chips on fire. The dust collector was off thank goodness or it
could have turned into a blast furnace. My solution was to purchase fire
extinguishers designed for motor boat engine compartments. Looks like a
small extinguisher but has a sprinkler head where the nozzle/handle usually
goes. Most any commercial fire suppression company sells these. They are
designed to put out not only the fire but have an electrical switch/contact
that opens on discharge. This is wired to the ignition on a gasoline engine
or snuffing device on a diesel. Probably could sound an alarm also. On my
CNC, it would open the e-stop circuit causing the dust collector to stop
also. Not fool proof but one more step in the safer direction. Seems to me a
must for a flammable fluid EDM setup. I will have one mounted over the
machine when I build mine!!
Peter
THRD, Inc.