Goulds Pumps VIT Installation, Operation And Maintenance Instructions page 23

INSTALLATION:
1. Install both coupling halves prior to mounting
the motor. Refer to the coupling manufacturer's
instructions.
2. Using the lifting lugs on the motor, carefully lower
the motor onto to the motor stand of the thrust pot
(See Figure 18) and align the bolt holes.
3. Install the bolts finger tight.
4. Make temporary electrical connections according
to tagged leads or diagram attached to the motor.
Motor must rotate counterclockwise when viewed
from the top. See arrow on pump name plate. If
motor does not rotate counterclockwise, you can
change the rotation by interchanging any two leads.
Before beginning any alignment procedure,
WARNING
make sure driver power is locked out.
Failure to lock out driver power will result in serious
physical injury.
ALIGNMENT OF FLEXIBLE COUPLING:
Alignment of the pump and motor is extreme importance
for trouble-free mechanical operation. Straight edge
alignment by an experienced installer proves adequate for
most installations.
1. Check for coupling alignment by laying a straight
edge across both coupling rims at four points 90º
apart.
2. Move motor until straight edge rests evenly at each
position. Repeat procedure until correct alignment is
achieved.
3. Install flexible sleeve between the hubs per the
manufacture's instructions.
4. Tighten all motor bolts.
NOTE: Be sure the relief fitting (#11 in Figure 18) is
clear of paint or any other obstructive material.
Otherwise it will cause premature failure of the
thrust pot and is not covered under warranty.
Figure 18 – Grease Lubricated Thrust Pot
INSTALLING THE OIL LUBRICATED THRUST POT
If the unit is supplied with a thrust pot (see Figure 19),
the thrust pot should be installed on top of the discharge
head or motor stand before installing the driver. The
driving mechanism of the thrust pot assembly is similar
to the hollow shaft motor. (See Figure 12)
1. Attach a sling to the thrust pot assembly through
the windows on the motor adapter and hoist the
assembly over the top of the discharge head.
2. Clean the mounting face with a flat file to remove
any burrs of the discharge head and the thrust pot.
Lower the thrust pot assembly and orient it so that
the bolt hole on the base of the thrust pot and the
top flange of the discharge head are line up. Install
all the bolts to secure the assembly to the discharge
head.
3. Lower the drive shaft through the quill of the thrust
pot assembly to meet the shaft coupling. Apply a
thin film of oil to the head shaft thread and screw
into the shaft coupling.
4. For unit with mechanical seal and flanged coupling,
install the spacer flange coupling as instructed on
page 20.
5. Install the gib key (#16) into the drive shaft and the
hollow shaft clutch.
6. Install the adjusting nut (#17) to hand tight.
7. With shafting all the way down and the impellers
resting on their seats, turn the adjusting nut (#17)
in counter-clockwise direction, thus lifting the shaft,
until the impellers just clear their seats and the
shaft/motor turns free by hand. This removes all
deflection from the shaft.
8. For enclosed impellers, if pump setting is 200 feet
or less, make another two turns on the adjusting
nut for the first 100 feet (3 turns for 12 tpi shaft)
Line-up one of the holes in the adjusting nut with
the nearest hole in the driver coupling. Insert the
capscrew in the hole and tighten it.
NOTE: 1.00" and 1.18" diameter shafts are 12 tpi, 1.50"
through 2.44" are 10 tpi, all larger sizes are 8 tpi.
ITEM DESCRIPTION
1 Motor stand
2 Head shaft
3 Bearing housing
4 Bearings
5 Top seal
6 Snap ring
7 Lock nut
8 Lock washer
9 Lower seal
10 Grease lube fitting
11 Grease relief fitting
12 Hex tap bolt
13 Hex nut
14 Hex capscrew
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