McDonald Submersible Pumps
McDonald Submersible Pumps
Installation Instructions
Date of Installation
INSTALLATION RECORD
Model Number
Serial Number
Depth of Well (Feet)
Depth of Water (Feet)
Pump Setting (Feet)
Riser Pipe Size
Wire Size (From Pump to Control Box)
Wire Size (From Control to Power)
Motor
AmpsH.P. Volts
Control Box
Amps
H.P.
Volts
IMPORTANT
While this pump will handle moderate amounts of sand and abrasive materials, it must be understood that the life of the pump will be
shortened. Therefore, do not install this pump in wells which continue to produce sand. The motor has been completely prefilled at the
factory and requires no further attention.
1. INSPECT THE EQUIPMENT
efore going on the job, open all packages and check all equipment
B
to be certain everything is included and that no parts have been
damaged during shipment. The pump should be checked for free
rotation, and the motor and name plate inspected to be sure they
are the correct horsepower, voltage and phase.
2. EXTREME TEMPERATURES
The submersible motors on all McDonald units are constructed so
that they will not be damaged by exposure to temperatures below
freezing. It may be that in some cases the solution in the motor may
be frozen in transit to the installation site. If so, the motor should be
warmed sufficiently to thaw it before installing in the well.
These motors may be installed in wells where the water temperature
is as high at 105oF. For higher temperature installation, consult
the factory.
3. WATER SUPPLY
The well casing must be 4" inside diameter or larger to accept the
submersible. Do not install the pump closer than 10 feet to bottom
of well as warranty applies only when pumping clean well water.
A common method to prevent over-pumping wells is to leave the
gate valve (see Testing Pump Before Connecting to Tank), partly
closed in the line. Another method is to use liquid level controls tied
in with the pump pressure switch. These liquid level control devices
provide automatic protection and should be installed according to
manufacturers’ recommendations.
4. MOTOR PROTECTION
he normal thermal overload relays or heaters used for standard
T
motors will not trip fast enough to protect a submersible motor, and
special extra quick-trip protection must be used.
For single-phase motors, this protection is provided by the specially
designed and selected protection in the control box.
For three-phase submersible motors, protection must be provided
by the thermal overload relays in the magnetic motor starter.
FOR TWO-WIRE MOTORS: A separate fused disconnect switch
with properly sized fuses must be provided between the power
supply and the pressure switch.
Always run a separate circuit from the entrance panel to a fused
disconnect switch. NEVER connect a submersible to a plug outlet.
Select the correct size cable from the Cable Selection Chart.
5. GROUNDING
WARNING: Failure to ground electrically operated equipment may
result in serious electric shock. Refer to local code requirements.
A.Y. McDonald Mfg. Co. provides submersible pumps with ground
wires. This ground wire has green insulation (for color coding).
Some two and three wire pumps with ground have the ground-wire
as part of the lead assembly, and green/ground wire should be
attached to the drop-cable, ground wire similar to the power-wire
splice connections.
For two-wire and three-wire pumps without the ground wire in
the lead assembly, the green/ground wire should be attached to
the most convenient motor stud. With the appropriate length of
insulation removed, make a complete loop which fits securely
around the motor stud and fasten firmly in place with the first jam
nut. Then, lock the assembly in place by tightening the second
jam nut against the first jam nut. If stranded ground wire is used
in-lieu-of the McDonald-supplied solid copper wire, a ring terminal
must be crimped on the wire before attachment to the two-wire
motor stud.
6. NUMBER OF STARTS
An excessive number of starts will lead to difficulties with pump
motors and their associated controls. For maximum pump-motor
life and minimum troubles, installations should be sized so that:
Motors of less than 1 H.P and larger should not be started more
than 300 times in a 24-hour period; 1 H.P. and larger should not
be started more than 100 times in 24 hours; three-phase motors
should not be subjected to more than 300 starts per day.
WARRANTY OF THREE-PHASE SUBMERSIBLE MOTORS IS
VOID IF PROPER QUICK-TRIP PROTECTORS ARE NOT USED
ON ALL THREE LINES.
WARNING: It is unlawful in CALIFORNIA & VERMONT (effective 1/1/2010); MARYLAND (effective 1/1/2012); LOUISIANA (effective
1/1/2013) and the UNITED STATES OF AMERICA (effective 1/4/2014) to use any product in the installation or repair of any public water
system or any plumbing in a facility or system that provides water for human consumption if the wetted surface area of the product has a
weighted average lead content greater than 0.25%. This prohibition does not extend to service saddles used in California, Louisiana or under
USA Public Law 111-380.
3210-324 5/12
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1
7. DIRECTION ROTATION - THREE PHASE ONLY
All McDonald submersible pumps rotate in a counter-clockwise
direction (looking into the discharge outlet). Three-phase motors
will operate in reverse rotation if improperly connected to the power
supply or magnetic starter.
A three-phase pump motor unit running backwards will develop
about 50% of its rated output.
Never stop pump if sand flows with water, as the sand will lock up
the pump impellers and pump cannot be started again.
If sand does not clear up after one or two hours pumping, the pump
should be pulled and well cleaned by a well driller.
11. FINAL OPERATION CHECK
Secure all piping to pressure tank and cycle the system to be certain
that all controls function correctly.
To check rotation, momentarily touch the three motor leads to the
magnetic starter before installation. The motor should “kick” in a
clockwise direction.
Check out the air pumping equipment and operation of the air
volume control on the pressure tank.
Three-phase motors may be reversed by interchanging any two of
the three motor leads at the magnetic starter.
If used with a “float-type” pressure tank, or bladder tank, precharge
the tank with air to about 2 PSIG lower than the switch-on setting.
e.g. 28 pounds on a 30-50 # switch setting.
NOTE: Do not use thread sealant on pumps with plastic threads.
LIGHTNING PROTECTOR
8. DROP PIPE
Always use thread sealant on metallic pipe threads.
Line 1
Galvanized pipe is recommended for suspending metallic fitted
submersible pumps into the well. However, if plastic fitted pumps
and plastic pipe are used, a safety cable should be used to prevent
loss of pump if pipe should break. Also torque arrestors should be
considered to prevent cable from being damaged from the starting
and stopping of the pump. The cable should also be taped to the
drop pipe with plastic tape at 5 or 10-foot intervals.
SINGLE-PHASE
Terminal Board of
Control Box
Care should be taken when the first length of pipe is attached to
the pump. A short piece of pipe should be used, as the weight
as leverage of a full length could damage the pump when the
assembly is raised.
THREE-PHASE
Magnetic Starter
9. INSTALLING PUMP IN WELL
A check valve is recommended for each 200 feet of drop pipe, and
a relief valve is recommended for every submersible installation.
21000 / 23000 Series pumps are provided with built-in check valves.
The J, V, K, L, P, and M Series, 5-25 GPM check valve is designed
so that it may be removed. To remove the check valve, use needle
nose pliers to grip the poppet tab and unscrew counter clockwise.
22000 Series pumps, depending on the model, may or may not
have a check valve that may be removed.
24000/ 26000 Series pumps use a wafer check valve that cannot be removed.
IMPORTANT: If the internal check valve is removed, it is
recommended that a check valve be installed in the discharge line
within 25 feet of the pump and below the drawdown level of the
water supply.
10. TESTING PUMP BEFORE CONNECTING TO TANK
Before starting the submersible the first time, a gate valve should
be installed in the line and the line so arranged that the water
Can be run to waste. This will prevent dirty water from entering
the pressure tank and piping system.
Close the gate valve to about 80% shut and start the pump. The
partly closed gate valve will hold the pump flow back and prevent
“surging” of the well.
As the water clears up, open the valve more and repeat the operation
until the water flows clear and clean.
Lightning
Arrester
L2
L1
Take great care to keep pipes clean and free from pebbles, scale
and thread chips. Make sound, air tight connections at all fittings.
9A.
Ground Wire
to Motor
Franklin Electric Super Stainless Submersible Motors manufactured
after July, 1972 have built-in lightning protection. No lightning arresters
are required.
Schedule 40 galvanized pipe is suitable for settings to 600 feet.
For deeper settings, use Schedule 40 pipe for the bottom 600 feet
and Schedule 80 for the remainder.
DO NOT LIFT THE PUMP/MOTOR SET BY THE MOTOR
LEADS AND NEVER RUN THE PUMP DRY OUT OF WATER AS
SUBMERSIBLE CAN BE DAMAGED. If a barrel is available, give
the pump a one minute running test before installation. Check well
depth before installing, so that the pump will be no nearer than 10
to 20 feet from the bottom of the well. Submerge pump 10 to 20
feet below “drawn down” water level.
Ground
Line 2
Ground
Wire to
Motor
Lightning
Arrester
T1
L3
Lightning
Arrester
T2
To Motor
T3
HOW TO IDENTIFY CABLES WHEN COLOR CODE IS LOST
(For Single-Phase Units only)
1. Disconnect all three drop cables from the control box. For temporary
Identification, tie tags to them and give each a number - 1, 2, 3.
2. With an ohmmeter, measure the following three values of “unknown”
ohms. Then match the “unknown” item on the left with the “known”
item on the right to determine the color of cables 1, 2, 3.
“UNKNOWN”“KNOWN”
Cable 1 to cable 2 ( ohms) Lowest - Black to yellow
Cable 1 to cable 3 ( ohms) Intermed. - Red to yellow
Cable 2 to cable 3 ( ohms) Highest - Black to red
3. Note that “yellow” cable is used to obtain lowest and intermediate
readings and that “red” cable is used to obtain highest and
intermediate readings.
EXAMPLE
Suppose that the ohm readings were:
1 to 2 measures 6 ohms (highest)
1 to 3 measures 4 ohms (intermediate)
2 to 3 measures 2 ohms (lowest)
The actual ohm values are not important. What is important is which reading
is highest, intermediate and lowest. This method will work regardless of the
actual value of the ohm readings.
Cable 3 was used to obtain the intermediate and lowest ohm reading. This
is the yellow cable.
Cable 1 is the cable used to obtain the intermediate and highest ohm readings.
This is the red cable.
ATTENTION! Important information for installers of this equipment!
This equipment is intended for installation by technically qualified personnel. Failure to install it in compliance with national and local electrical codes, and with Franklin Electric
recommendations, may result in electrical shock or fire hazard, unsatisfactory performance, and equipment failure. Franklin installation information is available from pump manufacturers
and distributors, and directly from Franklin Electric. Call Franklin toll free 800-348-2420 for information. Retain this information sheet with the equipment for future reference.
WARNING - Serious or fatal electrical shock may result from failure to connect the motor, control enclosures, metal plumbing, and all other metal near the motor or cable, to the
power supply ground terminal using wire no smaller than motor cable wires. To reduce risk of electrical shock, disconnect power before working on or around the water system. Do
not use motor in swimming areas.
2
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3210-324 5/12
TABLE A - CABLE SELECTION
CAUTION: Use of wire size smaller
than listed will void warranty.
SINGLE PHASE MOTOR MAXIMUM CABLE LENGTH (Motor to Service Entrance) (2)
Motor Rating
60ºC Insulation - AWG Copper Wire Size
VOLTS HP
KW
14121086 4 32 1000
000
0000
115 1/2 .37 100160 250390620 9601190
1780
2160
2630
3140
3770
1/2 .37 400 650 102016102510 38804810588071708720
3/4 .55 300 480 76012001870 289035804370533064707870
1
.75 250 400 630 9901540 238029603610441053606520
230 1 1/2 1.1 190 310 480 7701200 187023202850350042805240
2 1.5 150250 3906209701530
1910
2360
2930
3620
4480
3 2.2 120190 3004707501190
1490
1850
2320
2890
3610
5 3.7 180280450 7108901110
1390
1740
2170
2680
THREE PHASE MOTOR MAXIMUM CABLE LENGTH (Motor to Service Entrance) (2)
Motor Rating
60ºC Insulation - AWG Copper Wire Size
FOOTNOTES:
1.If aluminum conductor is used,
multiply lengths by 0.5. Maximum allowable length of aluminum is considerably shorter than copper wire of same size.
2.The portion of the total cable which is between the service entrance and a 3Ø motor starter should not exceed 25% of the total maximum to assure reliable starter operation. Single phase control boxes may be connected at any point of the total cable length.
VOLTS HP
KW
14121086 4 32 1000
000
0000
1 1/2 1.1 310 500 79012601960 30503780
200V
2
1.5 240 390 610 9701520 23602940361044305420
60 Hz
Three
3
2.2 180 290 470 7401160 18102250276033904130
Phase
5
3.7 110 170 280 440 690 10801350116020402490305036704440
3 - Lead
7.5 5.5 200310490 7709601180
1450
1770
2170
2600
3150
1 1/2 1.1 420 670 106016702610 40505030616075309170
230V
2
1.5 320 510 81012802010 313038904770586071708780
60 Hz
3
2.2 240 390 620 9901540 24002980366044805470669080209680
ThreePhase
5
3.7 140 230 370 590 920 14301790219026903290403048505870
3 - Lead
7.5 5.5 160 260 420 650 10201270156019202340287034404160
1 1/2 1.1 17002710 42706730
460V
2
1.5 13002070 327051508050
60 Hz
3
2.2 10001600 252039706200
ThreePhase
5
3.7 590 950 150023603700 5750
3 - Lead
7.5 5.5 420 680 107016902640 4100510062607680
TABLE B - ELECTRICAL INFORMATION
THREE PHASE
SINGLE PHASE
THREE PHASE
2 Wire
3 Wire
1/21/23/4 11 1/22 3 51 1/22 3 57 1/2
1 1/22 3 57 1/2
H.P.
MOTOR
VOLTAGE 115230230230230230230230230230230230230460460460460460
Standard Fuse Size (Amps)
30152025353045701525304570 8 11152535
Dual Element Fuse Size
15 8 101115152030 8 10122030 4 5 6 1015
Minimum Voltage (volts)
105210210210210210210210 210 414
Maximum Voltage (volts)
125250250250250250250250 250 506
12 6 8.09.811.5
13.21727.56.48.211.4
17.4
26.83.24.15.78.713.4
Minimum 1.04.23.02.21.5
Maximum 1.35.23.62.71.9
Maximum Current (amps)-Motor Running Under Load
(black & black)
Motor
Resistance
Main Winding
(ohms) 1
(black & yellow)
Minimum 1.81.0.683.22.31.81.0.6113.09.27.24.02.5
Maximum 2.31.51.04.03.02.21.2.7516.0
12.08.84.93.1
Minimum 5.8
3.5
1.8--------------------
Start Winding
(red & yellow)
Maximum 7.2
4.4
2.2--------------------
For All 4" Submersible Pumps
(1) For motor without drop cable attached.
NOTE: For operation of 230 volts motors on 208 volts, substitute special relay No. 155031-103 in control box, and use 2 sizes larger cable.
CAUTION: USE OF WIRE SIZES SMALLER THAN DETERMINED ABOVE WILL VOID WARRANTY, since low starting voltage and early failure of the
units will result. Larger wire sizes (smaller numbers), may always be used to improve economy of operation. FOR 3Ø MOTORS, standard 3Ø magnetic
starter with special extra-quick trip overload relays in all 3 legs is required for positive motor protection. Consult Franklin Electric Service Manual for
proper overload relay to use. WARRANTY IS VOID where this protection is not used.
SINGLE-PHASE THREE WIRE
Single-phase power source
If source is grounded on one side,
connect to L1 & fuse L2 only
Line
Line
Control Box
Load
Line
Fused disconnect switch
3210-324 5/12
THREE-PHASE THREE WIRE
Three-phase power source
Line
L1
L2
BASIC WIRING DIAGRAMS
Load
Blk Red Yel
L1 L2 GND
Load
Load
Control box GND must
be connected to good
ground or pump pipe
Magnetic starter
Fused disconnect switch
If source is grounded on one side,
connect to L1 & fuse L2 only
Load
3-Wire cable to motor
Black
Red
L1
L2
Pressure switch
3-Wire cable
to motor
Pressure switch
Line
SINGLE-PHASE TWO WIRE
Single-phase power source
Line
Load
Line
Fused disconnect switch
Load
2-Wire cable
to motor
Pressure switch
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3
TYPICAL INSTALLATIONS
Well Vent
CONDITION
Two Wire Installation
(with contained-air pressure tank)
1. Motor runs but delivers no water
2. Low delivery
3. Pump does not stop running
4. Pump starts and stops too often
5. Service line discharges milky water
Electrical Disconnect Box
Weather Proof
Junction Box
TANK
Well Seal
Pressure Switch
Snifter Valve
Pressure Gauge
Relief
Valve
Gate Valve
Union
Pitless
Adapter
TO HOUSE SERVICE
Check Valve
Tape Cable
to Pipe
Tee
Submersible Cable
Pump
Three Wire Installation
(with contained-air pressure tank)
Well Vent
Weather Proof
Junction Box
Electrical Disconnect Box
Control Box
TANK
Well Seal
Pressure Switch
Snifter Valve
1
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
Pump
Typical Submersible Installation
(well pit)
Electrical Discon nect
Weath er Proo f
J unct io n B ox
Cont rol B ox
TANK
Pressure Gauge
1/4" Tee
Air Volume
Cont rol
1 1/4"
Galv anized
Pip e
Relief
Valve
Pit less
Adapter
Elb ow
Pres sure
Swit ch
Gat e Valv e
TO HOUSE SERVICE
Check Valve
See Table
2 Ft .
NOTE: A pressure relief valve
is recommended on all
Submersible Installations.
Bleeder
Orif ice
Coup ling
Submersible Cable
4
4
✓
✓
✓
✓
✓
✓
✓
5
✓
✓
✓
✓
WHAT TO CHECK
Pump not in water supply
Check valve backwards or stuck shut
Pump air or gas locked
Inlet screen clogged
Pump plugged with deposits from well
Water pumping level lowers
Pump setting in sand or mud
Broken pump shaft or coupling
Drop pipe clogged or broken
Incorrectly selected pump
Worn pump parts
Leak in drop pipe
Cut-out of pressure switch too high
Leak on discharge side of tank
Tank water-logged
Tank too small in size
Switch out of adjustment
Check valve stuck open
Bleed-back valve plugged
Air volume control faulty
Bleed-back valve set too deep
Well water naturally gaseous
ELECTRIC CHECK CHART
1. Motor does not start when fused switch is closed
2. Overload protector trips
3. Relay chatters but overload does not trip
4. Fuses blow but overload does not trip
5. Overload trips after pump has run for some time
Tee
Submersible Cable
Tee
✓
✓
✓
✓
✓
✓
✓
✓
CONDITION
1
Bleeder
Orif ice
3
TO HOUSE SERVICE
Tape Cable
to Pipe
Tape Cable
to Pipe
✓
✓
✓
✓
✓
✓
✓
✓
Gate Valve
Union
Check Valve
Well Vent
2
Pressure Gauge
Relief
Valve
Pitless
Adapter
HYDRAULIC CHECK CHART
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
2
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
3
✓
✓
✓
✓
✓
✓
✓
✓
4
✓
✓
✓
✓
✓
✓
✓
✓
✓
5
✓
✓
✓
✓
✓
WHAT TO CHECK
Power is off
Loose or broken wire
Line fuse is blown
Overload not set
Pressure switch contacts burned or open
Wiring wrong in control box
Crooked well
Low voltage
Loose connection in control box
Wires to control box too small
Amperage too high
Insufficient power at entrance box
Cable size to motor too small
Motor winding faulty
Motor or cable grounded
Wrong relay in control box
Capacitor faulty
Relay faulty
Pump running tight
Locked with sand
Worn bearing
Control box in hot location
Voltage too high
Wrong control box
Bare wire touching control box
Line fuses too small
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