10
Pump Reassembly/Installing New Seal
1. Ceramic seat must be clean and free of dirt, grease, dust, etc. Wet outer
edge of O-Ring with small amount of liquid detergent; press ceramic seat
into seal plate cavity firmly and squarely with finger pressure (Fig. 5).
2. If ceramic seat will not locate properly, remove it, place face up on bench
and reclean cavity. Ceramic seat should now locate.
3. If seat still will not locate properly, place a cardboard washer over the
polished face and use a piece of 3/4" (19mm) standard pipe for pressing
purposes. NOTICE: Be sure not to scratch or mar polished surface or seal
will leak.
4. Remount seal plate on motor. Tighten bolts to 60-80 inch-lbs. (69-92
kg/cm) torque.
5. Apply a small amount of liquid detergent to inside diameter of rotating
half of seal.
6. Slide rotating seal member, polished face last, over threaded shaft end and
shaft shoulder until rubber drive ring hits shaft shoulder. (Fig. 3).
NOTICE: Be sure not to nick or scratch polished seal face; seal will leak
if face is damaged.
7. Screw impeller onto shaft (clockwise); this will automatically locate seal in
seal plate.
NOTICE: On models with impeller screw: install impeller gasket and lock
screw (left-hand thread - turn counterclockwise).
8. Mount diffuser on seal plate; tighten screws to 10-14 inch-lbs.
(11.5-16.1 cent.-kg.) torque.
9. Assemble motor and seal plate to volute; be sure clamp is properly
seated. NOTICE: Clamp knob can be located in any position around vo-
lute; if it is moved after assembly, tighten knob while tapping around
clamp to assist sealing. Do not move clamp while pump is full of water.
Hazardous pressure. Release all pressure from pump and piping
system before working on pump or attempting to adjust or remove clamp.
Clamp may blow off of pump if adjusted under pressure.
10. Reinstall pump base mounting bolts (if used) and prime pump according
to instructions on Page 7.
Installing Heat Sink Insert:
If the heat sink insert moves or shifts during seal removal, remove and reinstall
to prevent leakage.
1. To remove heat sink insert, grasp with fingers at the large end and move
back and forth. Do not deform.
2. Replace heat sink insert as follows:
A. Clean off old sealant and foreign material; clean out insert cavity.
B. Apply a small amount of non-hardening silicone RTV on surface of insert
(see Figure 6).
C. Pull insert into cavity (see Figure 7).
D. Remove surplus silicone RTV from insert cavity (see Figure 8).
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
WIPE ON SMALL AMOUNT OF
NON-HARDENING PERMATEX
ON THIS SURFACE
756 0993
7/8" SOCKET
BOLT
1-3/8" O.D.
WASHER
038 0893
REMOVE
SURPLUS
PERMATEX
PROPERLY
SEATED
039 0893
