Installing The Driver - Xylem Goulds VIT Instrucciones De Instalación, Operación Y Mantenimiento

LUBE LINE
(635)
LOCK BOLT
(636)
Figure 11
4. Clean the tension nut (623) and lightly oil its bore
and the threads. Screw the tension nut into the tube
nipple until the flange face of the nut contact the
tension plate.
5. For setting less than 100 feet, tighten the tension nut
until a slot aligns with the nearest locking position.
Install the locking bolt.

INSTALLING THE DRIVER

INSTALLATION OF A HOLLOW SHAFT DRIVER
This refers to either VHS type electric motors or hollow
shaft type gear drives. A small paragraph will be devoted
to combination electric motor and right angle gear
drives.
Do not work under a heavy suspended
WARNING
object unless there is a positive support
and safe guards which will protect personnel should a
hoist or sling fail.
1. The driving mechanism of all hollow shaft driver is
shown on Figure 12. The head shaft (608) extends
up through the quill or hollow shaft of the driver
and is held in place by an adjusting nut (604), which
not only carries all the static and hydraulic thrust
of the impellers and shaft, but also provides the
adjustment for the impeller clearances. The head
shaft is connected to top shaft (or stub shaft) by a
threaded coupling or a rigid flange coupling.
2. When a motor stand is furnished and not installed,
proceed as follows:
A. Hoist the motor stand, inspect the mounting
surfaces, register and clean these surfaces
thoroughly.
B. Install the motor stand on discharge head and
secure with capscrews provided.
3. Attach a sling to the lifting lugs of driver and hoist
the driver up. Inspect the mounting surface, register
and clean these surfaces thoroughly. If any burrs
are found, remove burrs with a smooth mill file,
cleaning thoroughly afterward.
4. For motor, orient the motor conduit box in the
required position. For the right angle gear, orient
TENSION NUT
(623)
5. Lubricate the driver bearings in accordance with
CAPSCREWS
TENSION PLATE
(625)
(604) ADJUSTING
GASKET
(779)
(730) GIB KEY
O-RING
(621)
COUPLING
TUBE NIPPLE
(629)
6. After lowering and orienting the driver as explained
7. Lower the head shaft through the motor quill shaft
8. Check that the head shaft centers inside the driver
9. Any head shaft misalignment with driver quill
10. With the motor in place and the head shaft
CAUTION
between the drive coupling and the pump shaft O. D.
is so close that should the motor spin with this shaft
stationary, galling and locking together is very likely to
take place.
the input shaft to the desired position. Align the
driver mounting holes with the mating tapped holes
on the discharge head. Lower the driver until the
registers engage and the driver rests on the discharge
head. Secure driver with capscrews provided.
instructions given on lubrication plate attached to
the driver case (or in the motor IOM).
NUT
DRIVE
Figure 12
above, remove the drive coupling and the hold
down bolts (See Figure 12). Be sure to mark the
location of the coupling before removing it.
to meet the shaft coupling. Apply a thin film of oil
to head shaft threads (if non-galling material) and
screw into the shaft coupling (located above the
stuffing box). Make sure the shaft is not damaged in
any way. Tighten the joint.
quill shaft within 0.06" (1.5 mm). If it does not,
misalignment is indicated.
shaft could be caused by a bent headshaft, burrs,
or foreign matter between shaft ends or any of the
mounting flanges: motor flange to discharge head
top flange, discharge head base flange to base plate
or the base plate itself could be out of level. If the
latter, shimming between base plate and discharge
head base, will correct it. Also, check concentricity
of motor to motor-stand (if provided) to discharge
head.
projecting through the motor quill shaft, make
temporary electrical connection to check the motor
rotation. (Be sure to remove the ratchet pins or balls
before checking motor rotation.) Motor must rotate
counter-clockwise when viewed from the top. See
arrow on pump name plate. If motor does not rotate
counter-clockwise, you can change the rotation by
interchanging any two leads. (For three phase only.
For single phase motors see motor manufacturer's
instructions.)
Never check motor rotation with the drive
coupling in place. The bore clearance
HEADSHAFT (608)
CAPSCREW (760)
ADJUSTING NUT
HOLD DOWN
BOLT
19