Page 5 of 8
Model CDMD
I&O IN-159
sleeve. The bushing sleeve
should now move freely.
9. Lubricate the large O-ring
(Q) with silicone grease and
place it over the front of the
magnet separator plate (H).
It will rest just inside the bolt
holes.
10. Position the separator plate
with the discharge port at
12:00 o’clock such that the
flush hole behind impeller is
at the 7 o’clock position as
you look down on it from
above. This is the highest
pressure region in the volute
and will provide the highest
pressure for flushing the back
magnet cavity. Place the
volute (A) on the separator
plate (H) with the discharge
facing directly away from
you. Align the bolt holes and
squeeze the two plates
together with your hands,
making sure they press
together evenly.
11. Install the eight Allen head
volute bolts (P) (1/4 - 20 x
5/8”) in the counter sunk
holes of the separator plate
(H). Tighten to 6 - 10 ft/lbs
using a crossing pattern.
12. Pull the magnet/impeller
assembly back from the
volute to remove play from
the assembly. Insert a 0.025”
angled feeler gauge into the
pump suction between the
top of the impeller vane and
the internal volute face. Push
the magnet/impeller
assembly forward until the
top of the vane contacts the
feeler gage, pinning it in
place.
13. Tighten one of the setscrews
(L) in the magnet separator
plate (H). Rotate the
magnet/impeller assembly
and listen for contact
(scraping sound). If contact
occurs, loosen setscrew (L)
and reset impeller again as
described in steps 13 and 14.
14. Lubricate the magnet cup O-
ring (R) with silicon grease
and install the O-ring into
counterbase at rear of
separator plate (H).
15. Place the magnet cup over
the magnet making sure that
it seats against the magnet
cup O-ring and that it is
positioned in the groove of
the separator plate. It must
fit inside the register groove
on the back of the separator
plate.
16. Install the drive housing (U)
onto the pump end and affix
it with eight Allen head
1/4 - 20 x 7/8” bolts.
Tighten Allen bolts to 6 - 10
ft/lbs in a crossing pattern.
17. Secure motor to drive
housing with motor bolts
(V).
