So, does it
have a compensating field or does it not? Inquiring minds want to know.
:)
RJ
Chris Zach wrote:
I
LIKE IT!
This morning I sat down, wired up the motor and contactor on the
pressure washer and gave it a run with the low pressure bubble wand
attachment. It works, however the motor was slowing down a bit and the
motor terminals were hot after a bit of usage.
So I tightened the power bolts on the motor itself, then used the
Elec-trak drill+wire brush to really brush down the posts. Took about
10 or so years of gunk off, after which I re-connected it and fired it
up with the high/low pressure wand.
*WOW*. When I set it to focused mode it will shoot the water over the
house (30 feet vertical). Very very strong, the wand and tools are
rated to 3400 pounds of pressure and the pump should only be 1500. But
boy is it a good 1500, maybe the best day of the gas engine's life did
this well.
The motor posts are cool, the motor is slightly warm, all contacts and
wires are cool. So I've got the right wires. The motor does slow down a
bit when the pump is running full blast, pulls into the yellow on the
power meter. I'll re-connect the E-meter sometime and check the real
power draw. I do think I have the compensation coil in the motor and
it's in series with the armature now strengthening the field, but you
know, I can deal with that.
Next up will to be to get a 4 wire plug for the field (instead of the 2
alligator clips I am using now) and I'll also wire the temp switch in
the motor in series with the contactor loop to shut it down if the
motor overheats.
Overall though it's pretty amazing, set up will now take about 2
minutes instead of screwing around with fuel and pulling my shoulder
trying to pull-start the thing.
The pump itself doesn't seem to be leaking oil out the top, so I think
it's good. I'll make it a policy to check the pump monthly to see how
the oil is, but I doubt it will need much.
Overall a spectacular win. And another project out of my pile of things
to do, now what do I do with this old engine?
Chris
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