Xylem IM203 R01 Model SSV Cartridge Seal - Manual (Page 3)

Page 3
1. Close all necessary suction and discharge valves to
isolate the pump from the system.
2. Drain the liquid from the pump by removing the
drain plug and opening the needle valve on the
vent plug.
3. Remove the coupling guards, the 4 coupling hex
cap screws, the coupling and coupling drive pin.
4. Remove the 4 motor hex cap screws (inner screws)
on the seal housing.
5. Loosen the 4 set screws located around the ID of
the pump shaft.
6. Remove the cartridge seal using the two tapped
holes provided on the gland of the cartridge seal
by threading two of the hex cap screws into these
holes and evenly tightening these screws. Lift and
remove the cartridge seal between the pump and
motor shaft.
7. Inspect the pump shaft for any burrs or debris. Any
burrs should be ground smooth with (fine grit)
emery paper.
8. Install a new o-ring on the turned fit of the new
cartridge seal. Lubricate the o-ring located in the
ID of the cartridge seal. Use a lubricant compatible
with the seal elastomers to hold the o-ring.
9. Install the new cartridge seal on the pump by care-
fully sliding it between the pump and motor shaft
and then sliding it into position
10. Reinstall the coupling pin and locate the space
shim on the shaft on the seal housing. If the shim
is not available, a 5 mm spacer can be used. See
step 11 in Figure 5.
SSV CARTRIDGE SEAL INSTALLATION
CARTRIDGE TYPE SEAL INSTALLATION
11. Reinstall the coupling halves and evenly tighten
the coupling bolts and torque them to 37 lbs ft (50
Nm) for 184TC frame motors and torque coupling
bolts to 48 lbs ft (65 Nm) for all larger frame sizes.
Remove the spacer shim and save for future use.
See step 12 in Figure 5.
12. Rotate the shaft by hand to insure that the pump
and motor rotate freely. Reinstall the coupling
guard.
13. The pump and system should be vented prior to
starting the pump. For sizes 33SV-92SV the vent
plug is supplied with an internal needle valve, so
it is not necessary to remove the vent plug. Simply
unscrew the needle valve half way to open the
valve to allow air to escape. (For sizes 33SV-92SV, if
the pump is supplied with a cartridge seal, remove
the vent plug located on the gland plate beneath
the coupling.)
NOTE: Place a loose rag over the open vent port
to prevent large amounts of liquid from being
sprayed on the pump and adjacent equipment.
Care should be exercised if you are
pumping hot water or chemicals to
avoid personal injury.
14. After installing the coupling, tighten the four set
screws located in the collar of the cartridge seal to
secure the seal to the pump shaft.
15. Rotate the shaft by hand to insure that the pump
and motor rotate freely. Reinstall the coupling
guard.
16. Use vent connections on cartridge seal for proper
venting.
CAUTION