Versa-Matic SMA3-A SLUDGEMASTER - Manual (Page 2)

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Figure 3
Figure 4
Remove strainer assembly secured with four cap nuts. Impeller is removed by
inserting block of wood, hammer handle, or similar object between impeller vane and
pump casing (see Figure 2) to prevent rotation and turn shaft counterclockwise from
air motor end with drift pin inserted through hole in shaft. Remove shaft assembly from
volute casing by removing snap ring above oil seal, bump shaft and bearing from
casing. Rotating portion of shaft seal can now be removed from shaft and stationary
seal seat can be removed from casing.
REASSEMBLY
When installing shaft seal on shaft use a lightweight oil and locate seal at extreme end
of shaft so that carbon face of seal will contact seal seat before bearing enters housing
bore during assembly. This eliminates the possibility of carbon washer falling out of
position in seal cage while bumping shaft and bearing assembly into correct position.
Push oil seal and retainer into bore above bearing and install snap ring. Install governor
weights, spool and spring if removed. Lay o-ring into casing bore and install intermediate
housing. Install o-ring and drop governor housing into position and push down into place.
Slide sleeve and spacer onto shaft with spacer and shaft holes in alignment. Install
coupling and tighten securely with drift pin and pipe wrench with same procedure as
removal. (See Figure 3.) Insert o-ring into filter housing bore and press filter element and
housing into position as shown. (See Figure 4.) Install o-ring into intermediate bore and
o-ring on to counter bore at upper end of filter housing. Assembly is now ready to receive
air motor and housing assembly. If coupling half on air motor shaft is removed, make
certain coupling is relocated to correct position as indicated dimensionally in Figure 5.
Line up coupling jaws for engagement by using bolt holes of castings as a reference.
Rubber spider should be installed in lower coupling half. Lower air motor and housing into
place slowly to feel for correct coupling engagement. When coupling is properly engaged,
assembly can be pushed down by hand. DO NOT FORCE ASSEMBLY TOGETHER
WITH BOLTS. If air motor assembly is lifted back up in attempting to engage blind
coupling, make certain that o-ring on top end of filter housing is still in position. If o-ring is
out of position during this blind assembly, air will by-pass the governor and over-speeding
can occur. Fill with recommended oil and run unit without pumping to check for possible
oil leakage at shaft seal or o-ring joints. Turn air supply on slowly to make certain that
governor is operating properly.
WARRANTY
This unit is guaranteed for a period of five years against defective material and
workmanship.
PERMANENT INSTALLATIONS
NOTE: As mentioned, the SMA3-A pump does require that oil be in the reservoir for
bearing and motor lubrication. For permanent installations remove item 66, then plug the
hole with a
1 /
8
" pipe plug, part number 618-002-330. Fill the reservoir and make sure that
an in-line oiler (type oil as recommended) is used in the air supply to the pump. Set
lubricator at a usage rate of 1 pint (473 cc) every 50 hours. The motor will then be
lubricated by the in-line oiler and the bearing by the oil in the reservoir.
Figure 5
Figure 6 Spider insert.