Pentair S316 Owner's manual

Owner’s/Operator’s Manual
Stainless Steel
Radial Flow
Submersible
Turbine
INSTALLATION / OPERATION
MAINTENANCE
Table of Contents:
Safety................................................................1
General .............................................................1
Specifications....................................................2
Pre-Installation Procedures and Checks.......2-3
Installation......................................................3-4
Three-Phase Current Unbalance...................4-5
Service..............................................................5
Electrical Tests..................................................6
Pump Disassembly/Assembly.......................7-9
Repair Parts....................................................10
Troubleshooting..............................................11
Preventive Maintenance .................................12
S316 (Rev. 4/14/95)
READ AND FOLLOW SAFETY
INSTRUCTIONS!
This is the safety alert symbol. When you see this
symbol on your pump or in this manual, be alert to the
potential for personal injury.
warns about hazards that will cause serious
personal injury, death or major property damage if ignored.
warns about hazards that can cause serious
personal injury, death or major property damage if ignored.
warns about hazards that will or can cause
minor personal injury or property damage if ignored.
The label NOTICE indicates special instructions which are
important but not related to hazards.
Carefully read and follow all safety instructions in this
manual and on pump.
Keep safety labels in good condition.
Replace missing or damaged safety labels.
GENERAL CONSIDERATIONS
Before installing your submersible turbine pump, review
the following checklist.
Be sure the well is clear of sand and abrasive material
before installing pump. Abrasive materials in the water
cause component wear and reduce pump capacity and
discharge pressure. Never use the pump to develop or
clean the well. Permanent pump damage can result within
the first few hours of operation.
If the well casing is suspected of being crooked, check it
with a gauge of identical length and diameter as the pump
and motor with two lengths of pipe attached. Serious dam-
age can result if the pump becomes lodged in a crooked
casing.
Be sure the well can supply a high-capacity turbine pump.
The well should be deep enough to cover the pump unit
with water, even at extreme pumping rates. Typically, the
pump should be submerged 10 to 20 feet (3 to 6 M)below
the lowest water level and at least 5 feet (2M)above the
bottom of the well.
Air entrained in the water reduces performance and will
damage the pump.
Your pump is designed to provide maximum efficiency
under specific capacity and head conditions. Do not oper-
ate it beyond specified limits.
System controls and pump must match. Do not inter-
change controls with other models. Serious damage can
result to the unit if pump and controls do not match.
Motor control systems and pump units are repairable in the
field. To avoid serious damage to the unit, use only parts
obtained from authorized dealers/suppliers.
Average number of starts per day will influence motor and
control component life (starters, relays, capacitors, etc).
Select pump size, tank size and control components for
lowest practical number of starts per day. Excessive
cycling accelerates bearing, spline, and pump wear and
erosion of control contacts.

NOTICE: Some motor/pump combinations require bracing
when hoisting. See the owner’s manual for your motor to
determine this. If hoisting a unit with bracing, keep brace
on unit until it is vertical and ready to put in well.
Electrical Splices and Connections
Splices must be waterproof. Make a strong mechanical
bond between the motor leads and the cable to avoid high
resistance at the connection. A poor mechanical con-
nection, or a poorly wrapped splice, can cause motor
problems and motor failure.
Before connecting the motor to the cable, perform a
ground check to assure that the motor has not been
damaged. Attach one end of an ohmmeter lead to any of
the three motor leads and the other ohmmeter lead to the
pump intake bracket. A new motor must have a resistance
of 2 megohms or greater. If not, contact your dealer.
Repeat for all three leads.
Prepare the cable and make the mechanical connections
(Figure 1A) and splices as follows:
1. Cut motor leads and corresponding cable ends at 3-
inch spacings to stagger connections for a smooth
splice.
2. Cut connecting cable to match the motor leads.
NOTICE: Match color coded wires, red to red, black to
black, and white to white.
3When using a butt connector, expose bare wire for
about 1/2". When using stranded wire, expose about 1"
of wire.
NOTICE: Butt connectors may be used with solid wires
through 8 AWG, or stranded wires through 10 AWG.
4. Clean exposed ends of wire thoroughly with emery
cloth or sandpaper to assure good electrical
connections.
5A.BUTT CONNECTORS (Figure 1A): Insert wires into con-
nector until insulation butts up against connector. Crimp
connector to wires with a pair of crimping pliers. Pull on
cable to make sure the connection is solid and tight.
5B.SOLDERED CONNECTIONS (Figure 1A):
NOTICE: Do not use acid core solder or corrosive
solder paste.
I. Straighten individual cable strands and spread
apart slightly.
II. Clean each strand and push strands of cable into
matching (color-coded) open strands of the motor
leads.
III. Wrap entire length of joint with fine copper wire
until strands are compressed.
IV. Apply heat and solder. Solder will follow the heat;
make sure solder flows throughout the joint. Pull
firmly on cable to test joint.
2
SPECIFICATIONS
Avg. No. of Starts per 24 Hr. Day
HP Rating Single Phase Three Phase
1 to 5 50 150
7-1/2 to 30 25 50
40 and over – 50
Weight per Foot (Lbs)
Pipe Size (In) Full Empty
2-1/2 7.9 5.8
3 10.8 7.6
4 16.3 10.8
5 23.3 14.62
6 31.5 18.97
Table I: Frequency of Starts
Table II: Weight of Pipe (Column)
Table III: Weight of Cable per 1000 Ft. (lbs.)
AWG 3-Phase 1-phase
Size Nom. Dia. Weight Nom. Dia. Weight
12-3 .500 140 .487 130
10-3 .545 186 .517 161
8-3 .771 328 .750 293
6-3 .965 525 .826 400
4-3 1.071 717
2-3 1.243 1066
AWG Wire Size Resist (Ohms/Ft)
14 .0050
12 .0032
10 .0020
8 .0013
6 .0008
4 .0005
2 .0003
Table IV: Cable Wire Resistance
Casing GPM
Size 20 40 60 80 100 120 140 160 180 200 220 240
6" ID 1.2 2.3 3.5 4.6 5.8 7.0 8.1 9.3 10.4 11.6 12.7 13.9
8" ID – 0.5 0.7 0.9 1.2 1.4 1.6 1.9 2.1 2.3 2.6 2.8
}
FPS
10" ID – – 0.3 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.3 1.4
NOTICE: If flow rate past motor is expected to be less than
rate shown in table, install a shroud around motor to force
cooling flow past shell. To minimize erosion to shell if flow
rate is expected to be more than 10 FPS (especially if sand
is present), reduce flow through pump to reduce flow past
shell.
Table V: Cooling Flow Rates Past Submersible
Motors In Feet Per Second (FPS)
6" Nominal Motor (5.38" OD)
PREINSTALLATION PROCEDURES AND CHECKS
Formula to find flow rate:
FPS = GPM x .409
D12– D22
D1 = Casing inside diameter
D2 = Motor outside diameter

6. Repeat Step 5 for each lead.
7. TAPING SPLICE (Figure 1B):
Because friction tape is not water
resistant, never use friction tape on a water-tight
splice. Use Scotch Number 33, or equivalent.
7A.Clean joints and adjoining cable/wire insulation of all
grease and dirt, and build up joint area with tape until it
matches diameter of cable.
7B.Starting 1-1/2" back from the joint, firmly apply one
layer of tape, overlapping about half the previous lap
and continuing approximately 1-1/2" beyond joint. Cut
tape evenly and press both ends firmly against cable.
7C.Apply two additional layers of tape, as described in
Step 7B, beginning and ending 1-1/2" beyond the
previous starting/ending points.
Splice and Cable Continuity Test
Before installing pump check cable and splices as follows
(see Figure 2):
1. Submerge cable and splice in steel barrel filled with
water. Make sure both ends of cable are out of water.
2. Clip one ohmmeter lead to barrel. Test each lead in
cable successively by connecting the other ohmmeter
lead to the three cable leads, one after the other.
3. If resistance reading goes to zero on any cable lead, a
leak to ground is present. Pull splice out of water. If
meter reading changes to "infinity" (no reading) the
leak is in the splice.
4. If leak is not in splice, slowly pull cable out of water
until reading changes to "infinity". Reading will change
to "infinity" when leak comes out of water.
5. Repair cable by splicing as explained under "Electrical
Splices and Connections".
Rotation Check (3-Phase Only)
After satisfactorily completing continuity test, connect
cable to pump controller. Check 3-phase motors for correct
rotation. If necessary, reverse any two cable leads at the
controller and recheck rotation. Permanently mark and
match to control box terminals for future reference.
Connect cable to motor controller and then wire controller
to disconnect switch. Connect temporary jumper wire
between proper terminals in controller to temporarily
energize magnetic coil.
Momentarily engage disconnect switch and note direction
of rotation. The shaft should rotate counterclockwise when
viewed from the top or shaft end of the motor. If rotation is
incorrect, reverse any two wires; mark wires to correspond
with the controller terminal numbers.
NOTICE: Pump is water lubricated. Do not operate the
pump for more than 5 seconds while it is out of water.
INSTALLATION
General
After completing all connections and tests so far, connect
a 5-foot length of pipe to pump.
Lower pump into well with pipe clamps attached to the 5-
foot pipe. Attach a standard length of pipe to 5-foot length
and lower pump CAREFULLY into well.
NOTICE: Do not use a pipe longer than 5 feet for the first
connection. Hoisting pump upright with a long length of pipe
can cause pump misalignment from excessive leverage.
Use extreme care when lowering pump
and cable to avoid damage to cable insulation.
Anchor power cable to pump every 20 feet with adjustable
steel band clamps. Protect insulation from clamps with
pieces of split rubber hose inserted between clamps and
cable. Attach cable to pipe halfway between clamps with
waterproof tape (Scotch No. 33 or equivalent).
NOTICE: Be sure the pump is always submerged, even at
extreme pumping rates. Install pump at least 10 to 20 feet
below the lowest "drawdown" water level and at least 5
feet above bottom of well.
Check Valves
Pump back spin and hydraulic shock can cause severe
damage to pump and motor. Install at least one check
valve to help prevent this.
Install check valve in discharge pipe, not more than 25 feet
above pump. For 6" and larger submersible pumps
installed more than 600 feet deep, install a second check
valve at the pipe joint nearest to the half-way point
between pump and ground level.
3
3"
3"
"
1
2
a.
b.
c. 140 0893
Figure 1A: Cable Splicing: Solid Wire, Stranded Wire
d.
e.
129 0893
Figure 1B: Stagger splices and tape
Ohmmeter set at
Rx100K or
Voltmeter set at
H1 Ohms Attach lead to
metal tank or
immerse in water
139 0893
Figure 2: Splice and Cable continuity

NOTICE: To avoid water hammer and pipe breakage,
distance from first check valve to second check valve
should not equal distance from second check valve to
ground level.
Well and Pump Test
Check and record static water level of well before starting
tests. Before making final piping connections, test flow
rate, capacity, and condition of well.
NOTICE: Do not operate pump with discharge valve
closed. Operate pump only within pressure and flow limits
of operating range shown on performance curve.
NOTICE: If sand is present in discharge, allow pump to
run with discharge completely open until water is clear. If
loud rattling noises develop, pump is probably cavitating.
Gradually close discharge valve until rattling stops.
INSTALLATION — ELECTRICAL TESTS
Risk of high voltage electrical shock
when testing. Can stun, burn, or kill.
Only qualified electricians should perform these tests.
When testing, use all normal precautions for the
voltages involved.
Electrical test of motor, cable, connections
The cable and splices can be damaged as the pump is
lowered into the well. To electrically test them, attach one
lead of ohmmeter to pipe. Attach other lead to each cable
lead in turn. See motor owner's manual for required
resistance in a good motor. A low reading indicates that
cable or splice has developed a leak to ground. Remove
pump from well and correct problem before proceeding
with installation.
Measure electrical resistance between motor leads and
well casing when motor is cold.
Voltage test (Figure 4)
Low or high voltages can cause motor failure. While pump is
operating, check voltage across each pair of leads at motor
controller. Readings more than 10% above or below rated
nameplate voltage can damage pump; correct before
placing pump in service. Test as follows:
1. Disconnect main power supply and open controller.
2. Connect power and start pump. For 3-phase motors,
read voltage across three pairs of leads (L1 – L3, L3 –
L2, L2 – L1) while pump is operating. For single phase
motors, read voltage across L1 and L2 while pump is
operating. Voltage should be within ±10% of motor
nameplate rated voltage. If not, consult power
company.
Load current test (Figure 5)
Load current should be obtained on each motor lead at the
controller. Partially close pump discharge valve (keep
pressure and flow within specified operating range) until
maximum amp reading has been obtained. Compare
reading with motor nameplate rating. If reading is 15% or
more over rated load, check for incorrect voltage in supply
line or overload due to abrasives in pump. Find and correct
problem before putting pump in service.
Current unbalance test (3 Phase only)
Determine current unbalance by measuring current in each
power lead. Measure current for all three possible hook-
ups. Use example and worksheet (Page 5) to calculate
current unbalance on a three phase supply system and
retain for future reference.
NOTICE: Current unbalance should not exceed 5%. If
unbalance cannot be corrected by rolling leads, locate and
correct source of unbalance.
If, on all three possible hookups, the reading furthest from
average stays on the same power lead, most of the
unbalance is coming from the power source.
However, if the reading furthest from average changes
leads as the hookup changes (that is, stays with a
particular motor lead), most of the unbalance is on the
"motor side" of the starter. In this case, consider a
damaged cable, leaking splice, poor connection, or faulty
motor winding.
4
L3
L2
L1
G
To Pump
Incoming
Power
Ground
Controller
128 0893
Figure 4: Voltage Test
Figure 3: Valve setting for startup must be partly open.
L3
L2
L1
G
To Pump
Incoming
Power
Ground
Controller
124 0893
Figure 5: Load Current Test
1352 1094

3-Phase Current Unbalance - Example
Here is an example of current readings at maximum
pump loads on each leg of a three wire hookup. Make
calculations for all three possible hookups.
A. For each hookup, add the readings for the three legs:
Ex.: Hookup #1 Hookup #2: Hookup #3
L1 = 51Amps L1 = 50 Amps L1 = 50 Amps
L2 = 46 Amps L2 = 48 Amps L2 = 49 Amps
L3 = 53 Amps L3 = 52 Amps L3 = 51 Amps
Total 150 Amps Total 150 Amps Total 150 Amps
B. Divide each total by three to get average amps:
Example: 150/3 = 50
Example: 150/3 = 50
Example: 150/3 = 50
C. For each hookup, find current value farthest from
average (Calculate the greatest current difference
from the average).
Ex. #1 Ex. #2 Ex. #3
50 Amps 50 Amps 50 Amps
–46 Amps –48 Amps –49 Amps
= 4 Amps = 2 Amps = 1 Amps
D. Divide this difference by the average and multiply by
100 to obtain the percentage of unbalance. Example:
Ex. 1: 4/50 = .08 x 100 = 8%
Ex. 2: 2/50 = .04 x 100 = 4%
Ex. 3: 1/50 = .02 x 100 = 2%
Use smallest percentage unbalance, in this case Ex. 3.
3-Phase Current Unbalance - Worksheet
Use this worksheet to calculate current unbalance for
your installation.
A. Add the readings for the three legs:
Ex.: Hookup #1 Hookup #2: Hookup #3
L1 = Amps L1 = Amps L1 = Amps
L2 = Amps L2 = Amps L2 = Amps
L3 = Amps L3 = Amps L3 = Amps
Total Amps Total Amps Total Amps
B. Divide each total by three to get average amps:
Hookup #1: /3 =
Hookup #2: /3 =
Hookup #3: /3 =
C. For each hookup, find current value farthest from
average (Calculate the greatest current difference
from the average).
Hookup #1 Hookup #2 Hookup #3
Amps Amps Amps
Amps Amps Amps
Amps Amps Amps
D. Divide this difference by the average to obtain the
percentage of unbalance:
Hookup #1: / = x100 = %
Hookup #2: / = x100 = %
Hookup #3: / = x100 = %
Use hookup with smallest percentage unbalance.
5
SERVICE
General
When installed in a clear well and operated under normal
conditions, the submersible turbine pump requires no
special maintenance. Completely tested at the factory, it
should provide many years of dependable service. The
motor is a continuous duty type and can operate
continuously for long periods. See motor owner’s manual
to determine filling or service requirements for your motor.
Removing Pump From Well
Most pump problems are caused by above-ground elec-
trical problems. Minor control box components or outside
electrical difficulties (such as low voltage) can cause a
malfunction. Before removing pump from well, check motor
windings for damage (check winding resistance with an
ohmmeter – see Page 6). Eliminate all above-ground
trouble causes before pulling pump. Pull the pump only as
a last resort.
Sandlocked Pump:
NOTICE: Before pulling pump, make all possible above
ground electrical tests. Most submersible pump problems
are above ground, not in the pump itself.
NOTICE: Motor failure can result from starting a sand-
locked pump. Do not bypass overload circuit or exceed
electrical rating when trying to start a seized pump.
Remove a sandlocked pump from well for cleaning. To
prevent pump from locking again when reinstalled, clean
the well thoroughly before reinstalling the pump.
Cleaning Sandlocked Pump:
1. Insert a reducing bushing in discharge adapter cap to
receive a hose coupling.
2. Use a hose to flush pump backwards (discharge to
suction). Oscillate shaft backwards and forwards with a
pump pliers and backwash pump for several minutes.
3. If pump cannot be freed, disconnect pump from motor,
disassemble liquid end (see Page 7) and backwash
sand from each part.
Checking Pump Performance:
Water containing abrasives can cause impeller wear and
reduce impeller efficiency, resulting in overload conditions.
In such cases, it is necessary to remove the pump from
the well and replace the impellers to maintain capacity and
pressure. To assure quality and integrity of the unit, re-
place with genuine parts available from your dealer.

Circuit (Winding) Resistance Test ( Figure 6A)
1. Shut off main power supply and disconnect motor wires.
2. Attach two ohmmeter leads to pairs of cable wires in
turn (black and red wires on three wire single phase
units). Compare readings with data provided in motor
manual.
3. If reading is considerably higher than chart in motor
manual, an open circuit (broken wire) is indicated; if
reading is considerably lower, a short circuit is
indicated. In either case, remove pump from well and
repair unit.
NOTICE: Be sure to include cable and winding resistance.
Multiply cable length by the per-foot cable resistance (see
Table IV, Page 2) and add winding resistance from motor
chart to get total.
Ground Check (Figure 6B)
1. Shut off main power supply and disconnect motor wires.
2. Attach one ohmmeter lead to pipe or METAL well
casing and the other lead, in turn, to each individual
motor wire.
3. If resistance reading goes to zero after touching any of
the wires, the pump should be raised to determine
location of ground fault (cable, motor, or splice).
4. Raise pump, watching resistance reading. When resis-
tance goes to infinity, fault has come out of the water. If
ground fault is located in cable or splice, repair it.
5. If ground fault appears to be located in motor, remove
pump from well. Cut cable at motor side of splice and
determine whether or not motor is grounded. If motor
indicates complete ground (resistance reading goes to
zero) replace unit.
If motor is not grounded, re-check splice and cable.
6
L3
L2
L1
G
To Pump
Incoming
Power
Ground
Ohmmeter
Set at Rx1 or
Voltmeter
Set on LO
Ohms
Controller
125 0893
L3
L2
L1
G
To Pump
Incoming
Power
Ground
Ohmmeter
Set at Rx100K
or Voltmeter
Set on H1
Ohms
Controller
127 0893
Figure 6A: Circuit (Winding) Resistance Test Figure 6B: Ground Check
ELECTRICAL TEST
The following electrical checks can be made with pump installed.
Risk of high voltage electrical shock
when testing. Can stun, burn, or kill. Only qualified electricians should perform these
tests.When testing, use all normal precautions for the
voltages involved.

Drive impeller off of
collet. Use shaft
extension as a guide
for the collet driver.
710 0495
Removing Pump From Motor:
Use of a pipe wrench discharge
assembly will raise sharp burrs which can cut anyone
handling pump. A strap wrench is recommended for all
assembly/disassembly work on pump.
NOTICE: Bowls, discharge assembly and suction bracket
all have left hand threads. To unscrew, turn
clockwise as
you face open end of discharge.
1.Remove cable guard from pump.
2.Remove bolts and lockwashers holding pump suction
bracket to motor. Hoist pump unit off of motor.
3.Remove discharge pipe from pump.
4.When pump is clamped in chain vise, always support
overhanging ends of pump.
Pump Disassembly (See Figures 7 to 10)
1.Clamp pump in chain vise.
2.To provide clearance for impeller removal, put a 1/4" nut
on dummy shaft of assembly fixture (slip it over
threaded stud) to block pump shaft. Be sure nut protects
first thread on fixture (see Figure 8). Bolt assembly
fixture to suction bracket.
3.Heat entire circumference of threaded area of last
stage bowl for 4 to 6 seconds to loosen thread
adhesive. Do not overheat.
4.With strap wrench, unscrew and remove discharge
assembly and last stage bowl as a unit (left-hand
thread; turn CLOCKWISE – Fig. 8).
5.Slip collet driver, large end first, over end of pump
shaft. Using collet driver as a fixture, slip shaft
extension tool inside driver and against end of shaft.
Drive last-stage impeller down shaft with large end of
collet driver until collet loosens (one sharp rap should
unseat impeller - see Figure 9). Remove collet and
impeller.
6.Shift chain vise to next stage bowl.
7. Heat threaded area of next stage bowl to loosen thread
adhesive. With strap wrench, remove bowl.
8.Repeat Steps 5, 6, and 7 for this stage and each
remaining stage.
NOTICE: If collet moves with impeller instead of
releasing, shift chain vise to next stage bowl, apply
heat, and partially unscrew bowl to force impeller and
collet back along shaft. Retighten bowl to gain
clearance for impeller, then repeat Step 5.
9.After removing first-stage impeller, remove fixture from
suction bracket.
10.Remove shaft from bracket.
11.Remove and discard teflon thrust washers from shaft;
remove set screws holding coupling to shaft; remove
coupling.
NOTICE: Setscrews are Loctited at factory; heat may
be needed to remove them. Do not overheat.
12.Remove and discard all rubber bearings and wear
rings from bowls. Inspect impellers and diffusers for
damage and visible wear.
7
SUBMERSIBLE PUMP DISASSEMBLY/MAINTENANCE:
Put 1/4" nut
under shaft end
Unscrew discharge
and last stage bowl
together.
NOTICE:
Left-hand
thread .
694 0495
Figure 8
Figure 9
Chain Vise Always support
overhang
Don't
rest on
screen
Discharge
Last Stage
Bowl 1159 0794
NOTICE: Support overhang when clamping pump in chain
vise. Clamp on stage next to stage being worked on.
Figure 7
• Inspect all parts for damage or visible wear.
• Replace any broken or badly worn parts.
• Shaft runout must be .004" (.1mm) or less
measured every 6" (150mm) along shaft.

Suction Bracket and Stage Installation
1. Install shaft key and coupling; make sure that shaft end
is flush with end of smaller bore in coupling (Figure 10).
Tighten all setscrews on key and shaft.
2. Lubricate wear rings with soap; install them in bowls
(Figure 11). Be sure wear rings are completely seated. If
it is not, rubbing can result.
3. If a motor is at hand, mount shaft/coupling assembly on
motor (Fig. 12) (If motor is not at hand, go to Step 5).
Install three new teflon thrust washers on shaft. Install
thin washer between the two thick washers.
NOTICE - 30 and 40 HP Units: Insert a stainless steel
washer (Part No. M10876) between each pair of teflon
washers.
4.Add suction bracket; shaft end play should be 1/16"
(1.6mm). If not, add or subtract washers until it is 1/16"
(1.6mm).
NOTICE - All Units: Pump requires at least one thrust
washer. If shaft end play when mounted on motor is less
than 1/16" (1.6mm) with one washer installed, consult
dealer.
5. If no motor is at hand, set end play as shown in Figure
14. Be sure coupling is correctly installed and pushed up
against suction bracket.
6. When clearance is correct, remove shaft and bracket from
motor. Install shaft/coupling/washer assembly on assembly
fixture, threading pump shaft onto dummy motor shaft to
hold it during assembly
.
7.Slide suction bracket onto shaft assembly and bolt to
assembly fixture.
NOTICE: Assembly fixture is designed to set correct
impeller spacing, so when shaft is mounted on fixture it
will normally stand slightly lower than when it is
mounted on motor. Make sure that teflon spacers are
installed exactly as they were when setting end play.
8
PUMP ASSEMBLY
Mount coupling
so that end of
shaft is flush
with step in
bearing bore.
Mount Shaft to Motor
Check End-Play
1/16"
(1.6mm)
728 0495
Step 1:
Fold wear ring
into a "U" shape.
Step 2:
Insert folded
wear ring into
top of bowl.
Step 3:
Allow wear ring to
expand; make sure it
seats in groove.
711 0495
Figure 10
Figure 11
0.0"
2.06"
768 0495
Figure 12 Figure 13

8.Slide impeller, eye first, along shaft into wear ring until it
stops on bracket. Slide collet, small end first, along shaft.
With small end of collet driver, lock collet and impeller to
shaft with three or four strong blows (Figure 14).
9.Insert rubber bearing into first stage bowl with radius
on discharge end of bearing (see Figure 15). Be sure
to completely seat the bearing in the bore. Slide bowl
along shaft and start bowl threads into suction bracket
far enough to engage threads (left-hand threads – turn
COUNTERCLOCKWISE). Do not tighten yet.
10.Brush three to four bracket threads with Loctite 7649
primer. Cover primed threads with a thin bead of
Loctite #567 and immediately tighten bowl with strap
wrench (Figure 16).
NOTICE: Although manufacturer states that Loctite #567
requires 24-hours to set to full strength, it may begin to set
in as little as five minutes, so work quickly.
11.Repeat steps eight through ten for remaining bowls. As
you approach discharge assembly, use shaft extension
tool to give room for collet driver use and to avoid
damaging shaft shoulder with collet driver.
12.Start threading discharge assembly onto last stage bowl.
Paint threads with Loctite 7649 primer and then run a
bead of Loctite #567 sparingly around last stage bowl
threads. Tighten discharge assembly.
13.Remove pump from assembly fixture; check that shaft
has 1/8" free end play when not mounted on either
motor or fixture. If in doubt, check end play with pump
mounted on motor. Pump requires 1/16" shaft end
play when installed on motor.
14.Stand pump on end; keeping assembly vertical, install
pump on motor with bolts and lockwashers.
9
Loctite 567
Cover three to
four threads;
tighten
immediately.
785 0495
Drive collet into impeller
with the small end of the
collet driver.
776 0495
PUMP ASSEMBLY (cont.)
Match bearing
radius to bowl
radius
778 0495
Figure 14
Figure 15
Figure 16

10
1
2
3
3
4
16
12
15
14
17
18
19
2
4
13
13
14
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789 0495
6S Submersible Stainless Steel
Radial Flow Turbine Pump Parts View
Key
No. Part Description Part No.
1 Discharge M10746
2 Cable Guard Clamp M08594
3 Rubber Bearing M10804
4 Diffuser H05559
5 Collet M10257
6 Impeller Consult Dealer
7 Wear Ring M10949
8 Suction Bracket H05555
9 Suction Screen M10962
10 Pan Head Screw 10-32x5/8” U30-636SS
(Self-tapping)
11 Shaft Consult Dealer
12 Shaft Key S23501
13 Teflon Thrust Washer M10269
14 Stainless Steel Thrust Washer* M10876
15 Teflon Thrust Washer M10271
16 Coupling M10518
17 Cup Point Set Screw S23985 (2 Req.)
18 Half-Dog Set Screw S27426 (2 Req.)
19 Cable Guard Consult Dealer
Repair Parts List
* Used in 30 and 40 Horsepower units only.

11
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE REMEDY
Fuses blow or overload 1. Pump sandlocked. 1. a) Check motor winding resistance - see "Circuit
circuit breaker trips when (Winding) Resistance", Page 6.
motor starts. b) If motor is not shorted, turn on current and rap
discharge pipe sharply to loosen sand.
c) Pull pump and clean.
2. Low or high voltage. 2. Check line voltage (see Page 4). If high or low,
contact power company.
3. Cable damaged or shorted. 3. Check pump cable for ground (see Page 6).
4. Pump forced into crooked well. 4. Forcing pump into a crooked hole will cause mis-
alignment of pump and motor. Consult well driller.
Fuses blow or overload 1. Low or high voltage. 1. Check voltage on service lines (see Page 4).
trips while motor is running. 2. Water contains abrasives. 2. If water contains excessive sand, remove pump
and clean sand out of well.
3. Motor or cable shorted and/or 3. See "Circuit (Winding) Resistance Test" and
grounded. "Ground Check", Page 6.
Motor does not start but 1. Fuses blown or circuit breaker 1. Reset circuit breakers or replace fuses.
does not blow fuses or tripped.
trip circuit breaker. 2. Voltage does not reach terminals. 2. 3-Phase: Check voltage at controller between wire
pairs: L1 – L3, L3 – L2, L2 – L1.
Single Phase: Check voltage between L1 and L2 on
box terminal strip.
3. Loose wire in control box. 3. Check and tighten all wires.
4. Defective magnetic controller coil. 4. Check starter and coil.
Pump does not shut off. 1. Cable leads improperly connected. 1. Check wiring diagram on box cover for correct
connections.
Motor runs, but delivers 1. Horizontal line check valve 1. Reinstall correctly.
little or no water. installed backwards.
2. Motor running backwards 2. Reconnect motor for proper rotation (see Page 3).
(3-Phase only).
3. Pump gaslocked. 3. Start and stop pump several times allowing one
minute between stops and starts.
4. Water level in well has dropped. 4. a) Restrict pump flow to equal well production.
b) Install liquid level control.
c) Reset pump lower in well.
5. Leak in discharge pipe. 5. Raise pipe until leak is found.
6. Coupling between motor shaft 6. remove pump from well and check coupling.
and pump shaft broken.
7. Pump parts worn from abrasives. 7. a) Check pump shut-off pressure. Pressure should
be at least 90% of pressure at installation.
b) Replace worn parts.
8. Intake screen clogged. 8. Remove pump from well and clean screen.
9. Pump set below recommended 9. a) Reduce pressure switch setting until pump will
depth. shut off.
b) Install pump producing higher pressure.
10. Discharge pipe friction reduces 10. Install larger pipe or pump producing higher pressure.
output.
Hazardous voltage. Can shock, burn,
or kill. When troubleshooting or servicing pump,
use all normal precautions for the voltages
involved.
1. Disconnect power unless required for testing.
2. Have electrical testing done by a qualified
electrician.
3. Most problems occur above ground. Remove pump
from well only as a last resort.

12
PREVENTIVE MAINTENANCE
To avoid major repairs, make the checks listed below every 4 to 6 months.
TEST
1. Measure and record the
standing water level (from top of
well casing)
2. Measure electrical resistance
between motor leads and well
casing with motor cold.
3. Check pump flow capacity
(gallons per minute).
4. Check pump discharge
pressure (PSI) at operating
conditions.
5. Check drawdown level (in feet)
from standing water level.
6. Measure voltage across motor
leads while pump is operating.
RESULT SHOULD BE
1. Reference number.
2. See motor manual.
3. At least 90% of readings at
installation.
4. At least 90% of readings at
installation.
5. High enough so that pump does not
break suction.
6. Within ±10% of rated voltage.
POSSIBLE INDICATIONS
1. To aid in monitoring pump
performance.
2. See motor manual.
3. Lower readings may indicate pump
needs repair.
4. Lower reading indicates pump wear,
increased friction losses, or change in
standing water level in well.
5. Cavitation can damage pump;
increased drawdown may indicate
reduced well flow.
6. If voltage is more than 110% or less
than 90% of rated voltage, consult
power company.