Maintenance; Disassembly - ITT GOULDS PUMPS 3656 Instrucciones De Operación, Instalación Y Mantenimiento

SPLASHING OR IMMERSING OPEN
WARNING
DRIP PROOF MOTORS IN FLUID CAN
CAUSE FIRE, SHOCK, BURNS OR
DEATH.
Hazardous voltage
can shock, burn or
cause death.
OPERATION AT OR NEAR ZERO
WARNING
FLOW CAN CAUSE EXTREME HEAT,
PERSONAL INJURY OR PROPERTY
DAMAGE.
Extreme heat can
cause personal injury
or property damage.
NOTICE: NO NOT RUN PUMP DRY OR SEAL
DAMAGE WILL RESULT.
• After stabilizing the system at normal operating conditions,
check the piping. If necessary, adjust the pipe supports.
• On frame-mounted units, coupling alignment may have
changed due to the temperature differential between pump
and motor. Recheck alignment following procedures and
hazard warnings in "COUPLING ALIGNMENT" section
of this manual.

Maintenance

FAILURE TO DISCONNECT AND
WARNING
LOCKOUT ELECTRICAL POWER
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE SHOCK,
BURNS OR DEATH.
Hazardous voltage
can shock, burn or
cause death.
FAILURE TO RELIEVE SYSTEM
CAUTION
PRESSURE AND DRAIN SYSTEM
BEFORE ATTEMPTING ANY
MAINTENANCE CAN CAUSE
PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH.
Hazardous pressure
can cause personal
injury or property
damage.
IF PIPING HAZARDOUS OR TOXIC
WARNING
FLUIDS, SYSTEM MUST BE FLUSHED
PRIOR TO PERFORMING SERVICE.
Hazardous fluids can
cause personal injury
or property damage.
CLOSE-COUPLED UNITS
• Bearings are located in and are part of the motor. For
lubrication information, refer to motor manufacturer's
instructions.
FRAME-MOUNTED UNITS
• Model 3756 S-group has greased for life bearings.
No regreasing is possible or necessary.
• Model 3756 M or L-group bearing frame and SAE drive
bearing frame should be regreased every 2,000 hours or at a
three month interval, whichever occurs first. Use a #2
sodium or lithium based grease. Fill until grease comes out of
relief fittings, or lip seals, then wipe off excess.
• Follow motor or engine and coupling manufacturer's
lubrication instructions.
• Recheck alignment.
SEASONAL SERVICE
• To REMOVE pump from service, remove drain plug and
drain all unprotected piping.
• To RETURN pump to service, replace drain plug using
Teflon™ tape or equivalent on male threads.
• Reconnect suction line if removed, examine union and repair
if necessary.
• Refer to OPERATION section of manual.

Disassembly

• Follow ALL warnings and instructions in the
"MAINTENANCE" section of this manual.
• Close-coupled units: Remove motor hold-down bolts.
• Frame-mounted units: Remove coupling guard, spacer,
coupling and frame hold-down bolts.
LIQUID END
1. Remove casing bolts (371).
2. Remove back pull-out assembly from casing (100).
3. Remove casing wear ring (103) if excessively worn.
NOTICE: DO NOT INSERT SCREWDRIVER BETWEEN
IMPELLER VANES TO PREVENT ROTATION.
4. On close-coupled units, remove motor end plug or cover
to expose screwdriver slot or flats on end of motor shaft.
5. While restraining shaft with an appropriate tool (close-
coupled units) or with a strap wrench (frame-mounted
units) remove impeller bolt (198). Impeller bolt may need
to be heated with torch to remove. Discard.
NOTICE: EXERCISE CAUTION WHEN HANDLING
HOT IMPELLER BOLT.
6. Remove impeller washer (199). Discard.
7. Insert two pry bars, 180° apart, between impeller (101) and
seal housing (184). CAREFULLY pry off impeller.
8. Remove impeller key (178).
9. Remove seal housing bolts (370B) and seal housing (184)
pulling with it the mechanical seal assembly. Discard seal
assembly and seal housing o-ring (513). For packed box
pumps see "PACKED BOX INSTRUCTIONS".
10. Remove adapter bolts (370) and adapter (108).
11. Inspect shaft sleeve (126). If badly scored, remove by
heating with torch. Discard.
NOTICE: EXERCISE CARE IN HANDLING HOT
SHAFT SLEEVE.
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