Goulds Pumps 3296M - IOM - Manual (Page 33)

PREPARATION FOR DISASSEMBLY
s
! WARNING
The 3296 usually handles hazardous and/or toxic
fluids. Skin, eye and respiratory protection
required. Precautions must be taken to prevent
injury or environmental contamination.
s
! WARNING
If pump has failed, pumpage may be present in the
area between the adapter and the frame and also
inside of the bearing frame.
1. Lock out power to driver.
2. Shut off all valves controlling flow to and from pump.
3. Drain and decontaminate pump in accordance with
all Federal, State, local and company regulations.
The 3296 should be drained and thoroughly flushed
before it is removed from the piping. After isolating
the pump from the system flush the pump using a
compatible liquid.
s
! WARNING
Ensure pump is isolated from system and pressure
is relieved before any plugs are removed or piping
disconnected.
4. To decontaminate pump recirculation path,
remove plug 408A and inject flush into external
flush connection.
5. Disconnect all piping and auxiliary equipment.
6. Remove coupling guard.
7. Remove coupling.
NOTE: If the only service required is to change
the impeller, the flush screen or the wear ring,
please refer to the appendix “Changing the
Impeller”.
8. Remove casing foot and bearing frame foot bolts.
9. Remove bare pump from baseplate and take to shop.
DISASSEMBLY
s
! WARNING
Each component must be individually
decontaminated using procedures in accordance
with all federal, state, local and company
environmental regulations.
s
! WARNING
The magnets contained in this unit are extremely
powerful. Keep magnetic drive components and
magnetic tools apart from each other by a
minimum of six (6) feet [two (2) meters]. Serious
injury to fingers and hands will result.
NOTE: When working on pump use a bench with
a non-magnetic work surface such as wood with a
brass surface.
l
! CAUTION
The shop area must be clean and free of any
substances that would contaminate the magnets,
ex. ferrous metals.
1. Remove thermocouple (758B) (Fig. A).
2. Remove casing nuts (425). Remove casing (100)
(Fig. A).
3. Remove casing gasket (351) and discard
(Fig. A).
4. Place shaft wrench on coupling end as shown.
Remove impeller bolt (198), impeller lockwasher
(199A) and impeller washer (199) (Fig. B).
3296 M Group 6/05
29