SCOT MOTORPUMP VAE Series User manual

SCOT MOTORPUMP™
VERTICAL SEALLESS
MODELS VAE, VFE, VWE
zINSTALLATION zOPERATION zMAINTENANCE
INCLUDES THROTTLE BUSHING AND LIP REPLACEMENT
Check pump for shortage and damage immediately upon
arrival. Note damage or shortage on freight bill (bill of
lading); immediately file claim with carrier.
EXTERIOR — Pay particular attention to conduit box,
external hardware and accessories. Touch up abrasions
or scratches with approved paint.
INTERNAL — If extensive or serious external damage
is noted, if impeller is damaged (look in ports), or if shaft
binds or sticks, disassemble as required to permit
internal inspection.
Handle with care. Dropping or jarring can seriously dam-
age motor bearings or break pump parts. Lift with device
having capacity for pump weight, and use lifting hooks or
eye bolts (if provided) or rig double sling around motor
frame and pump casing. Do not use sling through pump
motor adapter nor around suction and discharge flanges.
Location — Pump location should provide the following:
1. Pump must be completely submerged in liquid.
Location should allow for liquid level to reach “min
level” line that is cast on adapter.
2. NPSH must meet or exceed pump requirement.
3. Allow room for inspection and maintenance.
4. Correct power supply to motor; all wiring should
meet National Electrical and Local Codes and
Regulations.
5. If outdoors, protection from the elements, freezing
and water damage due to flooding.
6. Tank or cabinet reservoir size must be large enough
to allow for velocity/turbulence of liquid based on
pump performance characteristics.
Mounting Plate — Mount pump to cabinet or tank
with Scot mounting plate Model MP11 or MP13 as follows:
MP11:
1. Locate mounting plates around machined column on
adapter.
2. Set pump case to proper height.
3. Tighten (2) bolts evenly to 50 ft. lbs. maximum
torque. Over tightening will cause adapter to crack.
4. Install pump to cabinet or tank with (4) bolts.
MP13:
1. Attach mounting plate to adapter by inserting cap
screw through plate, adapter and into motor C-face.
Tighten alernately and evenly.
2. Install pump to cabinet or tank with (4) bolts.
Piping — Suction and discharge gauges are useful to
check pump operation and are excellent trouble
indicators. Install gauges in the lines. Observe these pre-
cautions when installing piping:
1. Support close to, but independently of pump.
2. Use the next larger pump size for suction (if used)
and discharge.
3. Keep as straight as possible. Avoid bends and fit-
tings.
4. Remove burrs, sharp edges, ream pipe cuts and
make joints air-tight.
5. Don’t spring pipe to make connections. Strain must
not be transmitted to pump.
6. Allow for pipe expansion with hot fluids; expansion
joints are not recommended.
Suction — Pump does not require suction piping.
1. A screen or filter is recommended to prevent large
particles from entering suction. Screen or filter must
not restrict pump suction.
2. Position pump in tank to allow adequate space
(approx. 3”) between pump suction and bottom of
tank. This will prevent pump from being restricted by
bottom of tank or cabinet.
INSTALLATION
HANDLING
INSPECTION
61.000.280
JANUARY 2005
• Cedarburg, WI 53012 • P.O. Box 286 • 262-377-7000 • FAX [phone]
SCOT DIVISION OF ARDOX CORP. — HOME OFFICE
Replaces Nov 2002

Discharge — VAE and VFE Series pumps permit dis-
charge port location at any of four positions, 90 degrees
apart. VWE Series pumps permit port location at any
eight positions, 45 degrees apart. Change by removing
case bolts, rotate casing, and replace bolts. Ensure
there is adequate clearance with selected position
between wall or tank, motor conduit box, and grease fit-
tings.
1. If discharge line is short; size may be same as dis-
charge port; if long, use 1 or 2 sizes larger.
2. Long horizontal runs require a grade as even as
possible. Avoid high spots and loops. Trapped air
will throttle flow and may result in erratic pumping.
3. Install check and gate valves in discharge line if
required.
Pre-Start — Before initial start of the pump, check as
follows:
1. The rotation must be checked upon installation.
Close, then break the contacts quickly and observe
the rotation of the exposed portion of rotating parts.
Rotation must agree with the rotation arrow on the
motor. For all pumps, the standard rotation is clock-
wise when viewed from the top of motor. Motor
wiring is easily changed in the field. Observe the
wiring diagram on the inside of the terminal box
cover, or on the motor nameplate.
2. Check voltage, phase and frequency of line circuit
with motor nameplate.
3. Check suction (if used) and discharge piping and
pressure gauges for proper operation.
4. Assure that pump is completely submerged in liquid.
Priming — Pump requires no priming providing pump
is completely submerged in liquid. Tank must be filled,
and pump completely installed before operating pump.
Do not start pump dry and then fill tank as serious
damage from shaft defection can occur.
CAUTION - DO NOT RUN PUMP DRY. Pump requires liq-
uid for throttle bushing and lip seal lubrication.
Starting — Proceed as follows to start pump:
1. Close drain valves and valve in discharge line.
2. Start the motor (pump).
3. When pump is operating at full speed, open dis-
charge valve slowly.
Running — Periodically inspect pump while running,
but especially after first start and following repair.
1. Record pressure gauge readings for future refer-
ence.
2. Record voltage, amperage per phase, and kW (if an
indicating wattmeter is available).
3. Adjust pump output capacity with discharge valve.
DO NOT throttle suction line.
Freezing Protection — Protect pumps shut down
during freezing conditions by one of the following
methods:
1. Drain tank; remove all liquid from the tank.
2. Keep fluid moving in pump and insulate or heat the
pump to prevent freezing. If heated, do not let tem-
perature go above 100 to 150 degrees F.
3. Fill pump completely with 50/50 antifreeze water
solution.
Cleaning — Remove oil , dust, dirt, water, chemicals
from exterior of motor and pump. Keep motor air inlet
and outlet open. Regularly drain moisture from TEFC
motors.
Labeled Motors — It is imperative for repair of a
motor with Underwriters’ Laboratories label that original
clearances be held; that all plugs, screws, other
hardware be fastened securely, and that parts
replacements be exact duplicates or approved equals.
Violation of any of the above invalidates Underwriters’
label.
Temperature — Total temperature, not the rise, is the
measure of safe operation for a motor. If temperature by
thermometer exceeds limits for insulation class,
investigate and change operating conditions.
Lubrication (Pump) — Pumps should require no
maintenance, other than the motor bearings,
according to the following instructions:
TCV56 FRAME MOTOR, VAE MODELS
The bearings on the TCV56 motors are double shield-
ed and prelubricated. No lubrication is required for
the life of the bearings.
TCV140 FRAME MOTOR, VSE & VWE MODELS
Greasing motors every 9-12 months is acceptable for
less aggressive applications. However, vertical
motors under the following conditions should be
regreased every three months:
1. Continuous high ambients
2. Dirty or moist locations
3. High vibration
4. Pumping high temperature liquids
Procedure — Overgreasing bearings can cause
premature bearing failure. For motors equipped with
a Alemite fitting, clean tip of
fitting and apply grease gun. Use 1 to 2 strokes on
5HP motors or smaller, and 2 to 3 strokes on motors
above 5HP. Keep grease clean, and lubricate motors
at standstill. Do not mix
petroleum grease and silicone grease in motor bear-
ings.
Lubrication — Motors are pre-greased
normally with Shell Oil Company’s “Dolium R.” Two
equivalent greases which are compatible with the
furnished grease are Chevron Oil’s “SRI No. 2” and
Texaco Inc.’s “Premium RB.”
Motors that do not have Alemite fitting are equipped
with double sealed prelubricated
bearings, and do not require additional
lubrication.
MAINTENANCE
OPERATION

TCV56 FRAME MOTOR, VAE MODELS
A.) Disassembly:
1. Disconnect power
2. Close suction and discharge valves
3. Drain system.
4. Remove (4) bolts holding plate to tank.
5. Remove bolts holding adapter to pump case.
6. Remove motor and rotating element from pump
case, leaving casing and piping undisturbed.
7. Insert a screwdriver in one of the impeller water-
way passages and back off the impeller nut as
shown in Figure 1.
. Remove motor shaft end cap. Insert a screw-
driver in slot of motor shaft. While holding shaft
against rotation, unscrew impeller from shaft by
turning counterclockwise when facing impeller.
9. Remove bolts holding mounting plate to adapter
and adapter to motor.
10. Remove lip seal from adapter as shown in Figure 2.
B.) Reassembly:
1. Position lip seal in adapter bracket with rubber
cup/spring facing pump case. See Figure 3.
2. Press lip seal in adapter bracket.
3. With motor preferably in the vertical position,
remount the adapter on motor, making sure the
motor shaft does not dislocate the lip seal.
Position mounting plate on adapter and align
holes with adapter holes. Tighten bolts to motor
alternately and evenly.
4. Hold shaft against rotation as described in para-
graph 8 of disassembly procedure, and thread
impeller on shaft until it is tight against the shaft
shoulder.
5. Replace D-washer and impeller nut holding
impeller against rotation as indicated in para-
graph 7 of disassembly procedure (2 & 3 HP
1PH, and all 3PH motors only).
6. Remove any burrs caused by screwdriver on the
vane of impeller in waterway passage.
7. Replace motor and rotating element in casing.
8. Tighten casing bolts alternately and evenly.
9. Install pump mounting plate to cabinet or tank
with (4) bolts.
Do not start until until pump is completely filled
with water.
MECHANICAL SEAL REPLACEMENT
Figure 3
Figure 1
Figure 2

TCV140 FRAME MOTOR, VSE & VWE MODELS
The throttle bushing is a normal wear component and
requires inspection and possible replacement. Common
signs of a worn throttle bushing may include:
1. Water spraying up shaft.
2. Audible noise.
3. Excessive vibration
A.) Disassembly:
1. Disconnect power.
2. Close suction and discharge valves.
3. Drain system.
4. Loosen (2) nuts holding mounting plate to
adapter.
5. Remove (4) bolts holding plate to tank.
6. Remove bolts holding adapter to pump case.
7. Remove motor and rotating element from pump
case, leaving casing and piping undisturbed.
8. Insert a screwdriver in one of the impeller water-
way passages and back off the impeller nut as
shown in Figure 4.
9. Remove impeller from shaft, being careful not to
lose the impeller key. If impeller is difficult to
remove, it may be necessary to use a bearing
puller to remove.
10. Remove throttle bushing.
11. For lip seal replacement, remove bolts holding
adapter to motor.
12. Remove lip seal from adapter as shown in Figure 2.
B.) Reassembly:
Lip Seal
1. Position lip seal in adapter bracket with rubber
cup/spring facing pump case. See Figure 3
2. Press lip seal in adapter bracket.
3. With motor preferably in the vertical position,
remount the adapter on motor, making sure the
motor shaft does not dislocate the lip seal.
Tighten bolts to motor alternately and evenly.
Throttle Bushing
4. Install throttle bushing by sliding thin side of
bushing toward motor until bushing bottoms.
See Figure 5.
5. Place key in key seat. Line up keyway in impeller
with key in motor shaft, and slide impeller on the
motor shaft. Be certain that the key is posi-
tioned in the keyway of the motor and impeller.
6. Insert a screwdriver in a waterway passage of
the impeller holding it against rotation and tight-
en retaining assembly as described in paragraph
8 of disassembly instructions. See Figure 4.
7. Remove any burrs caused by screwdriver on the
vane of impeller in waterway passage.
8. Slide motor and rotating element in pump case.
9. Tighten casing bolts alternately and evenly.
10. Locate mounting plates around machined col-
umn on adapter.
11. Set pump case to proper height.
12. Tighten (2) bolts evenly to 50 ft. lbs. maximum
torque. Over tightening will cause adapter to
crack.
13. Install pump to cabinet or tank with (4) bolts.
Do not start until until pump is completely filled
with water.
WE RECOMMEND STOCKING A SPARE THROTTLE
BUSHING AND LIP SEAL (OR REPAIR KIT) TO MINIMIZE
DOWN TIME.
THROTTLE BUSHING & LIP SEAL
REPLACEMENT
Figure 5
Figure 4