Xylem IM158 R04 Model SMVT - Manual (Page 31)

SMVT Installation, Operation and Maintenance Manual 29
Maintenance (continued)
Pump Disassembly Instructions and Internal Stack Replacement
Warning: Lock out power supply to driver motor to prevent accidental startup
and physical injury.
Warning: Pump components can be heavy. Proper methods of lifting must be
employed to avoid physical injury and/or equipment damage. Steel toed shoes
must be worn at all times.
Warning: The pump may handle hazardous and/or toxic fluids. Proper personal
protective equipment should be worn. Precautions must be taken to prevent
physical injury. Pumpage must be handled and disposed of in conformance with
applicable environmental regulations.
Warning: Allow all system and pump components to cool before handling them
to prevent physical injury.
Note: Before disassembling the pump for overhaul, ensure all replacement parts
are available.
1. Close all necessary suction and discharge valves.
2. Drain the liquid from the pump by removing the lower drain plugs and the upper vent
plug. See Figure 24.
Figure 24: Vent/Drain Plug Locations
3. Remove the (2) coupling guards.
4. Loosen the set screws on the seal collar.
5. Disassemble the coupling by removing the (6) socket head screws. Remove the dowel pin
on the pump shaft. See Figure 25. Retain bolts and dowel pin for reassembly.
Figure 25: Motor Coupling