Harvest Right Home Freeze Dryer Owner's Manual page 24

Power Flush
This should be done approximately
every 10-12 batches, depending on
what type of food, and the moisture
content of each food, you have
freeze dried. To complete this flush,
you may want to place cardboard
(or something similar) to absorb any
spray or spills, and avoid a potential
mess on the floor.
1.
Turn the vacuum pump switch OFF.
2.
Plug the vacuum pump into a wall
outlet (not the freeze dryer).
3.
Find 2 containers that can hold a
quart of oil.
4.
Remove vacuum hose from the
vacuum pump.
5.
With the pump OFF:
A. Drain all the oil from the
vacuum pump reservoir via the
drain valve.
B. Once drained, close the drain
valve.
6.
Turn the pump ON.
A. Once the oil is drained, pour
most of that used oil back into
the pump via the vacuum hose
fitting intake port (see figure
10). You can use the funnel tip
that comes with your oil jug.
Make sure to pour the oil into
the intake port fitting slowly.
Avoid pouring oil back in which
has particles or is really dirty
(black or gray in color).
24 HarvestRight.com | 1-800-700-5508
Figure 10 - Vacuum Hose Fitting Intake Port
You DO NOT necessarily need
new oil to perform this step since
we are just flushing it through the
pump. Perform this step slowly,
it will cause a strong exhaust and
maybe even cause oil to shoot out
of the exhaust (you may cover the
exhaust with a towel to prevent
oil spraying everywhere). This
is normal. Make sure to pour the
oil into the intake port fitting
slowly. Let the pump run for
approximately 30 seconds.
B. Drain the oil again via a power
flush;
I. With the pump ON, place
your hand over the PVC
(white) cap of the exhaust
with the drain valve
open and the pump on,
smothering the exhaust,
this will cause a violent
blowout from the oil drain
valve; keep the oil collection
container very close to the
drain to avoid messes.
C. Once the sound changes, and
the smoky haze clears, turn the
pump OFF.
D. Close the drain valve.
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