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Cleaning: Take a damp rag and wipe everything off - multiple times if necessary - to remove the layers
of oil and grease. Then, maybe a damp rag with a little detergent to remove the residue.
Nice little pump. I have a couple of 1405's (or is
it 1402? Anyhow, next size up from the 1400) here which have a note
painted on the outside indicating that they were overhauled back in May,
1954. They sat around in the back of a CRT rebuilding
shop for many years before I picked them up a few years back.
Using my little old McLeod I indicate a pressure of
around 1 micron after a few hours of running. On mine,
the old seal assembly came apart but there was an aluminum ring which had to be freed using pliers in a twisting
motion before most of the parts of the old shaft
seal would come off. If using the new shift kit,
which I highly recommend be fitted at the same time, the parts are upgraded and don't
need modification (Or they are supposed to, I found one old shift pawl
in a shift kit recently). I'm better off seeking a motherboard that
does not have any graphics capability of its own, because
otherwise I have to configure the BIOS to default to using the one I've plugged into it instead without being able to see what I'm doing.
Not doing This Web-site also reduces the
possibility of getting debris in the weep hole -
I'd suggest plugging it up while cleaning the shaft/gasket
area in any case. Not only will your pump be more presentable, cleaning will also reveal potential problem areas like a leaking shaft
seal or sump gasket. 1. Remove the belt, pump pulley, and Woodruff (half moon) key on the pump shaft.
5. Inspect the shaft for damage in the vicinity of the
pump casting where the seal will need to contact the
shaft. General inspection: Look for signs of obvious damage or problems that will have
to be dealt with before the pump is used. Our appliance repairs are done
by technicians that have the necessary skills, experience, tools and genuine parts.
The item listed as "Shaft Seal" from Duniway actually includes the seal, gasket, three (3) screws, and instructions,
but they are not really as comprehensive as what follows.
Everything you remove is to be discarded anyway (unless you're installing your own non-Welch seal
into the old cover in which case it will need to be
in good condition and thoroughly cleaned of seal and gasket debris) so don't worry about
damaging the pieces but take care not to scratch or dent the shaft!
CAUTION: On pumps where the shaft seal is internal like some Precision Scientific
models, just removing the pump assembly from the
case risks destroying an old shaft seal whose parts have stuck to the shaft.
They also have complete seal kits for most Welch pumps at slightly higher prices than Duniway.
If you want to touch up the paint or refinish the pump in decorator colors (use high temperature enamel as these pumps - especially the direct-drive variety - get
quite hot after running for a few hours),
that's optional, but just a clean pump will be a happy pump.
There are some so-called "dry" vacuum pumps but these are
not that common. While they are notably reliable, wear and
tear will always occur. For belt-drive pumps, inspect the belt for oil soaking or excessive wear and
replace if needed.
If the belt is oil-soaked or excessively worn, it should be replaced.
Note: Both pulleys can be pulled off at the same time without the need to move the motor, or just the
pump pulley and belt can be removed by loosening the motor mount clamps and lifting the motor off
its cradle. But don't try to remove only the pump pulley
with the belt still tight. 3. Drain the oil into
a clean plastic container with a secure
cap (if it's to be reused) by unscrewing the plug at the bottom of the pump.
If the oil isn't going to be reused, the container doesn't need to be clean. Don't forget other specs such as the size of the area in which you plan to install in the unit,
in addition to entranceways and hallways that installers will need to navigate
when turning in the unit. Whether you’re planning to buy
a new energy efficient freezer or just make your current unit a more energy efficient freezer, consider
the following tips. And remember that a full freezer is a more energy efficient freezer than a half-full one, so a smaller freezer makes it more likely you’ll achieve this goal. |
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