Universal Pump Service Manual
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Replacing the Back Pump Case
1. Carefully align the cut-out in the back pump case with the fi lter housing assembly.
Ensure the stack and wiring sit properly in the front cover (i.e., stack is sitting level, wires are
wrapped around the sides and bottom of stack, and wires are not obstructing the case channel or
screw holes (Figure 8).
2. Gently push the back half of the case down onto the front half. If there is resistance, stop and check that the stack,
fi lter housing assembly, and wiring are seated properly.
3. Once seated, replace four case screws and tighten in an alternating fashion.
If wiring is obstructing the case channel, use a thin wooden stick to push it into place.
Reassembling and Replacing the Filter Housing
1. Insert a new fi lter (SKC Cat. No. P2240901) and replace the existing O-ring*.
2. Fit two halves back together.
3. Replace four screws and tighten in an alternating fashion.
4. Check for leaks (
see Functional Testing, Initial Leak Check
).
* Replace with new O-ring only as needed (SKC Cat. No. P22409 [3 fi lters, 3 O-rings]).
Replacing the Battery Pack
1. Align ba! ery with grooves on case and ba! ery connector pins on the control board.
Forcing the battery pack when misaligned can damage the battery pins.
2. Carefully push the ba! ery to the le" toward the belt clip until it clicks into place.
It may be necessary to pull up on the belt clip so that the ba" ery pack can slide into place.
3. Replace two ba! ery pack screws and tighten in an alternating fashion.