SealMaster SP 300, Руководство пользователя, Страница: 48 / 56

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CHECK BALL ASSEMBLY SANDPUMPER II
1. SERVICING THE CHECK BALLS:
a. Loosen the hose clamp on the bypass hose.
b. Where the plumbing connects to the pump is a flange and
gasket #109 with 2 bolts-remove these and lift the discharge
piping out of your way. Look for the O-ring #124 that is in
this flange.
c. The part that this flange connects to contains 2 check balls.
Remove the 6 lock nuts around this manifold, lift, and off of
the 6 bolts. Clean out any sand build-up that could keep the
balls from seating. Look where the balls sit on the stainless
steel seat assembly #121, sand may cut grooves there-
replace if necessary. Remove the seat and lift out the
bottom set of balls. If the seat needs replaced go to step #2.
d. Scrape off the old gaskets and install new gaskets #119.
e. If there is any damage to the check balls #120, replace as
necessary.
f. Reinstall the manifold and tighten the 6 locknuts.
g. Put grease in the grove in the piping flange and press in a
new O-ring #124. Set discharge piping back on the pump –
start the union and then start the 2 bolts. Tighten the union
and finish tightening the 2 flange bolts.
2. SERVICING THE BOTTOM CHECK BALLS
:
To service the bottom 2 Check Balls, the procedure is the same. You will
loosen the union by the basket strainer.