I was wondering if anyone has played with these? I just purchased on
from HF for about $11.
Came home and started taking my compressor apart. You replace the petcock
with another one on a short extension. The actual auto drain is attached
to the extension.
They say it needs a constant are source. The way it works, is as long as
there is air pressure on the control side the valve stays closed. If you
release the air pressure it drains.
So I remove the releif tube between the head and the main pressure (power
on/off) switch, and plumb in the plastic hose they give you. Finally, I
have everything hooked up and fire off the compressor. As the compressor
reaches about 80#, I hear a bang! Then hissing. The plastic hose got hot
and melted. So I start looking through the instructions again. I finally
find, in the 1st paragraph in the manual, inside the box, that this is NOT
to be used on compressors with a metal releif tube. I try a couple more
things, and blow out the plastic line again. The heat coming from the head
and the relief tube is getting the plastic so hot it's melting. I happen
to have some hose for truck air breaks, and use it instead of the cheap
plastic hose. The compressor charges up, and turns off. The air break
hose holds, GREAT!!! But the pressure switch presses a pin on the relief
tube to vent the pressure in the head, and the discharge fires!!! WOW,
that's great!!!
Only :( now there is NO pressure on the control hose, so the dump valve
dumps, and continues to dump until the tanks had dropped from 125 to about 90
psi. When the compressor kicks back on, the pressure switch releases the
valve for the dump line, and the new water dump valve closes.
Now what good is this? A switch that when the compressor is turned off,
or the pressure shuts power off to the motor because the tank is up to
pressure, dumps the pressure in the tank until either the pressure switch
allows the compressor to run again, or the tank empties.
Has anyone played with these, and figured a way to jury rig dump valve so
it will work with a compressor with a metal relief tube?
I was thinking about putting a T in the output line from the compressor, and
routing a line down to the moisture dump valve. I just have to figure a
way, of relieving the pressure on that line manually and and not dumping
all the air out of the tank.
A $11 education, that will probably cost $20 to fix. :)
John
John T. Blair WA4OHZ email: jblair1948@cox.net
Va. Beach, Va (eBay id: zebra48-1)
Phone: (757) 495-8229
48 TR1800 48 #4 Midget 65 Morgan 4/4 Series V (B1109)
75 Bricklin SV1 (#0887) 77 Spitfire 71 Saab Sonett III
65 Rambler Classic
Morgan: www.team.net/www/morgan
Bricklin: www.bricklin.org
|