Motor Not Running - ITT GOULDS PUMPS GB Serie Instrucciones De Instalación, Operación Y Mantenimiento

Maintenance
FAILURE TO DISCONNECT AND
WARNING
LOCKOUT ELECTRICAL POWER
Hazardous
BEFORE ATTEMPTING ANY
voltage
MAINTENANCE CAN CAUSE SHOCK,
BURNS OR DEATH.
•
Motors have permanently lubricated bearings. No
lubrication is possible or necessary. Follow the motor
manufacturer's recommendations for maintenance.
•
To REMOVE pump from service drain all pumpage
from pump and piping.
•
To RETURN pump to service replace all plugs and
piping using Teflon™ tape or equivalent on male
threads.
• Refer to "OPERATION" section of manual.
GB Series Disassembly
•
Place wrenches on adapter (13) and discharge head (1),
and unscrew discharge head and casing (3).
NOTE: CASING HAS A LEFT HAND THREAD
ON BOTH ENDS AND IS SEALED WITH
O-RINGS (2).
•
Remove klip ring (6) from end of shaft (11). The
stages, each comprising a bowl (9), impeller (8) and
diffuser (7) may now be removed. If pump has been
clogged by foreign matter, but otherwise undamaged,
further dismantling may be unnecessary. If shaft
assembly (11), shaft seal (12) or motor are to be
replaced, proceed as follows:
•
Remove plug (18) from rear of motor and hold
motor shaft with screwdriver. Unscrew pump shaft
coupling assembly (11) from motor shaft. Remove
four motor mounting bolts (14), separate the motor
from frame by withdrawing it straight back.
•
Motor may have to be pried with two screwdrivers
if the shaft seal sticks. The shaft seal stationary seat
may be pushed out of adapter from the motor side.
There is a rubber coupling o-ring (19) between
motor shaft and coupling which will usually remain
on the motor shaft as the seal is pulled over it.
GB Series Reassembly
Check that the rubber deflector (20) and the coupling o-
ring (19) are on the motor shaft. If they are worn or
damaged, replace. Install stationary seal seat in frame
(13) and mount frame (13) and handle (15) to motor.
Install seal rotating element, making sure faces are clean
and that the last rubber member goes over the coupling
o-ring and onto the motor shaft. Screw the pump shaft
and coupling assembly (11) on until it seats up against
the motor shaft. With a straight edge across the face of
the frame check the location of the outboard end of the
coupling. Due to variations in motor shaft length, etc., it
will be from .030" short to flush. Add .010" shims 7K155
until they are flush or higher, i.e., the last shim interferes
with the straight edge. Put the required stages on
checking each stage for additional shim requirements by
putting the straight edge across the bowl and checking
the location of the impeller hub. After all the stages are
on the shaft replace klip ring (6).
Check o-ring on both frame and discharge head and
replace if damaged. Install casing (3) and bearing spider
(4). Thread on discharge head (1) (Notice: left hand
threads) and tighten.
With screwdriver in the slotted end of the pump shaft,
turn the unit over (clockwise) before replacing plug (18).
It should turn with no resistance except that of the shaft
seal.
Trouble Shooting
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.
SYMPTOM

MOTOR NOT RUNNING

See Probable Causes 1 thru 5
LITTLE OR NO LIQUID DELIVERED
See Probable Causes 6 thru 12
EXCESSIVE POWER CONSUMPTION
See Probable Causes 3, 12, 13 & 14
EXCESSIVE NOISE & VIBRATION
See Probable Causes 3, 6, 7, 10, 13, 15 & 16
PROBABLE CAUSES
1. Motor thermal protector tripped
2. Open circuit breaker or blown fuse
3. Impeller binding
4. Motor improperly wired
5. Defective motor
6. Pump is not primed, air or gases in pumpage
7. Discharge, suction plugged or valve closed
8. Incorrect rotation (3 phase only)
9. Low voltage or phase loss
10. Impeller worn or plugged with debris
11. System head too high
12. Incorrect impeller diameter
13. Discharge head too low — excessive flow rate
14. Fluid viscosity and/or specific gravity too high
15. Worn bearing
16. Pump, motor or piping loose
3