QED AutoPump AP-2, Operation Manual

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QED Environmental Systems
AP-2 Manual
Page 52
STEP 6 - The Control rod (See Figures 15 through 18) is the next component to
be cleaned. Only use a Scotch Brite pad for removing any iron or degris
on this metal alloy control rod.
STEP 7 - The final component to be cleaned is the outer AutoPump casing. The
fastest and most effective way to clean out the inside surface of the pump
casing is to use a three-stone honing tool. The technique is to move the
hone in-and-out a half dozen times or so through each end of the casing.
The time for the casing cleaning should take no longer than 5 minutes.
The AutoPump is now ready for re-assembly by following the steps above in reverse
order.
Installing Pump Casing
STEP 1 - Inspect the O-rings to ensure they are capable of sealing (no discernible
cuts or abrasions).
STEP 2 - Lubricate both inside ends of the casing to a depth of 1/2” with a thin
layer of food-grade grease. Ensure that the film reaches the edges of
the casing.
STEP 3 - Place the bottom check valve (Bottom Loading Pump) or bottom plug
(Top Loading Pump) upright on a clean level surface.
STEP 4 - Pull the casing down over the check valve or plug.
Warning:
The pump casing has beveled ends that allow it to slide over the O-rings
easily. Keep fingers, hands and other body parts away from these edges as
they approach the heads. These edges can pinch when the pump casing is
slid over the lower and upper heads.
STEP 5 - Turn the pump upside down and spin the casing assembly on the
discharge tube by hand until the edge of the casing contacts the O-ring
on the pump head.
Caution:
Be careful to swing the counterweight inside the pump.