Owner manual

wear protective clothing, eye protection and follow standard
safety procedures when handling corrosive or personally harmful
materials. Proper procedures should be followed for draining and
decontaminating the pump before disassembly and inspection of
the pump. There may be small quantities of chemicals present
during inspection.
WARNING: Magnetic force hazard. This pump should only
be disassembled and assembled using the recommended proce-
dures. The magnetic attraction is powerful enough to rapidly pull
the motor end and the wet end together. To avoid injuries, do not
place fingers between the mating surfaces of the motor and wet
end. Keep the drive magnet and impeller assembly away from
metal chips or particles.
1. Stop the pump, lock out the motor starter, close all the
valves that are connected to the pump, and drain/decon-
taminate the pump.
WARNING: The pump must be thoroughly flushed of any
hazardous materials and all internal pressure relieved prior
to opening the pump. Allow the pump to reach ambient
temperatures prior to performing maintenance.
2. Place the pump & motor vertically
on the motor fan end on a work
bench. Remove the (4) screws (item
8) securing the pump to the motor
adapter / barrier (item 4). See
figure 13.
Figure 13
3. Firmly grab the pump and pull straight up to disengage the
motor and pump. See figure 14.
4. Place pump on bench with housing facing up. Remove (8)
housing screws (item 7). See figure 15.
Figure 14
Figure 15
5. Pull housing (item 1) straight up to remove. Inspect hous-
ing for signs of wear or damage. Look for signs of rubbing or
cracked thrust ring. See figure 16.
6. Remove impeller assembly (item 3). See figure 17. Inspect
impeller and drive for signs of wear or damage. Look for
signs of rubbing, damage and wear. Check the impeller
thrust ring and bushing for wear.
NOTE: Replace the thrust washer and bushing if wear ex-
ceeds dimensions in figure 18.
Figure 16
Figure 17
Figure 18
7. Remove the o-ring (item 2) and look for chemical attack,
swelling, brittleness, cuts, etc. See figure 19.
8. Inspect the motor adapter / barrier (item 4). Inspect the
inside and outside for signs of rubbing or damage. See
figure 20.
Figure 19 Figure 20
9. Visually inspect the outer drive (item 5) for rubbing, damage,
corrosion or loose magnets. See figure 21.
Figure 21
Outer Drive Replacement
1. Remove the bolt, lock washer and flat washer (items 9,10 &
11) from the center of the drive. Hold the drive with your
hand to prevent it from turning. See figure 22.
WARNING: Be careful, tools may be attracted to the magnets.
2. Remove the drive magnet from the motor shaft by gently
pushing down on 2 pry bars or large flat head screwdrivers
from the bottom of the drive. See figure 23.
6