Zoeller 61 HD Series Operating instructions

SECTION: Z2.10.210
ZM1760
0416
Supersedes
0214
Since 1939 the name Zoeller has represented the standard for
submersible dewatering and sewage pumps. The same high quality
workmanshipandeasymaintenancedesignhasbeenincorporatedinto
this line of heavy-duty solids-handling submersible sewage pumps.
This manual incorporates the parts list and repair instructions into
one document to aid in the ownership of a Zoeller submersible non-clog
wastewater product. Please read and review this manual before repair-
Storage of six months or less will not damage the submersible pump.
However, to ensure the best possible protection, the following is
advised:
•Store pump inside whenever possible or cover with some type
of protective covering.
• Tape or seal in plastic bag the terminal ends of wire leads.
• Spray coat unpainted surfaces with rust-inhibiting oil.
• See ZM1759 Owner’s Manual before start-up.
REPAIR MANUAL
61 HD SERIES HEAVY DUTY SOLIDS HANDLING PUMPS
Table of Contents
Safety Instructions ....................................................................... 1
Replacement Parts List ............................................................2-3
Disassembly Procedures............................................................. 4
Assembly Procedures...............................................................5-6
Pump Wiring Diagrams................................................................ 7
Service Checklist.......................................................................... 8
Safety Instructions
TO AVOID SERIOUS OR FATAL PERSONAL INJURY OR MA-
JOR PROPERTY DAMAGE, READ AND FOLLOW ALL SAFETY
INSTRUCTIONS IN THIS MANUAL AND ON THE PUMP.
THIS MANUAL IS INTENDED TO ASSIST IN THE INSTALLATION
AND OPERATION OF THIS UNIT AND MUST BE KEPT WITH
THE PUMP.
This is a SAFETY ALERT SYMBOL.
When you see this symbol on the pump or in the
manual, look for one of the following signal words
and be alert to the potential for personal injury or
property damage.
Warns of hazards that WILL cause serious personal
injury, death or major property damage.
Warns of hazards that CAN cause serious personal
injury, death or major property damage.
Warns of hazards that CAN cause personal injury
or property damage.
INDICATESSPECIALINSTRUCTIONSWHICHARE
VERY IMPORTANT AND MUST BE FOLLOWED.
THOROUGHLY REVIEW ALL INSTRUCTIONS AND WARNINGS
PRIOR TO PERFORMING ANY WORK ON THIS PUMP.
MAINTAIN ALL SAFETY DECALS.
CAUTION
Short Term Storage
PLEASE FURNISH THE FOLLOWING INFORMATION:
• Model Number
• Part Number of Pump
• Serial Number
• System Voltage
• Replacement Part Number and Description.(refer to pages 2 & 3)
To Order Replacement Parts
© Copyright 2016 Zoeller®Co. All rights reserved.
ing the product. Follow the steps and procedures listed on ZM1074
for a proper start-up upon installation. Many items contained within,
when followed correctly, will not only ensure a long and problem-free
life for the pump, but also save time and money during installation.
Reference ZM1759 for owner’s manual on 61 HD Series Pumps.
Should further assistance be necessary please call our Technical
Service Department at 1-800-928-PUMP (7867).
MAIL TO: P.O. BOX 16347 • Louisville, KY 40256-0347
SHIP TO: 3649 Cane Run Road • Louisville, KY 40211-1961
[phone] • 1 (800) 928-PUMP • FAX [phone]
Visit our web site:
zoellerengineered.com
Product information presented
here reects conditions at time
of publication. Consult factory
regarding discrepancies or
inconsistencies.

2
© Copyright 2016 Zoeller®Co. All rights reserved.
ZEPA0479
19
18
15
17
1
16
5
14
13
12
10
6
1
2
9
11
8
3
1
4
2
22
23
21
2
31
18
24 25
29
26
30
7
3
31
32
3
20
27
28
33

3
© Copyright 2016 Zoeller®Co. All rights reserved.
IMPELLER
CASING
.015-.030 INCH
CLEARANCE GAP
SHIMS
ZEPA0195
IMPELLER CLEARANCE DIAGRAM
*One kit required per pump if moisture sensors installed.
61 HD PARTS LIST
NUMBER DESCRIPTION QTY. PART NO.
1 PLUG 3 011162
2 SCREWS 12 006451
3 WASHER, LOCK 12 004497
4 COVER 1 (see job folder for BOM) small or large power cord hole.
5 CORD SEAL 1 (see job folder for BOM) 12 or 8 ga. with or w/o sensors
6 CORD AND CLAMP ASSEMBLY 1 (see job folder) 12 or 8 ga. with or w/o sensors (013564, 013565,013566, 013567)
7 WASHER, LOCK 4 002255
8 SCREWS, CORD CLAMP 4 004416
9 SEAL, COVER 1 011157 (standard buna see job folder)
10 THRU WALL TERMINALS, POWER 3 (see job folder for BOM)
11 THRU WALL TERMINALS, SENSORS 4 003402
12 MOTOR HOUSING AND STATOR 1 (see job folder for BOM) note: moisture sensor wire must be installed if applicable.
13 BEARING, UPPER 1 010069
14 ROTOR 1 (see job folder for BOM)
15 KEY, IMPELLER 1 006487
16 BEARING, LOWER 1 008225 (1 Phase) / 011190 (3 Phase)
17 MOISTURE SENSORS/ PLUGS 1 015261 (moisture sensor & wire kit)*
18 SEAL, MTR HSG. / SEAL RETAINER 2 011158 (standard buna see job folder)
19 ADAPTER HOUSING 1 011153
20 ROTARY SEAL, UPPER 1 006510 (standard carbon/ceramic see job folder for bom)
21 SNAP RING 1 006416
22 SCREW, SEAL RETAINER 4 007774
23 SEAL RETAINER 1 011155
24 ROTARY SEAL, LOWER 1 006510 (standard carbon/ceramic see job folder for bom)
25 SHIM PACK 1 011671
26 IMPELLER 1 (see job folder for BOM)
27 WASHER, IMPELLER 2 006488
28 SCREW, IMPELLER 1 006405
29 SEAL, PUMP HOUSING 1 006478 (standard buna see job folder)
30 PUMP HOUSING 1 (see job folder for BOM)
31 OIL 2 008419 (requires (2) one gal. cans)
32 PRELOAD SPRING 1 012595 (after manufactures’s Date 2/2000)
33 MOISTURE SENSOR WIRES 1 015261 (moisture sensor & wire kit)*

4
© Copyright 2016 Zoeller®Co. All rights reserved.
Disassembly Procedures
DISASSEMBLY PROCEDURES
A. Before you begin...
1. Shut off pump.
2. Disconnect power source.
3. Remove pump from system.
B. When removing impeller (26)...
1. Complete Section A.
2. Remove the four screws (2) and lock washers (3) from the
ange of the adapter housing (19).
3. Remove the pump housing (30) and gasket (29).
4. Immobilize the impeller (26) by holding the vanes with a pipe
wrench. Using a socket, remove the impeller bolt (28) and impeller
washer (27).
5. Using two pry bars, carefully pry the impeller (26) from the shaft.
6. Remove the square key (15) and any impeller shims (25) which
are on the shaft.
NOTE: The number of shims removed so the same number can be
installed upon reassembly.
NOTE: Impeller hub serves as lower seal retainer. When impeller is
removed, seal spring will fall free.
C. When removing rotary seal (20 & 24)...
1. Complete Sections A and B.
Pump should be at room temperature. Seal and motor
housing may be pressurized. Care should be used in removing pipe plugs
(1) so that oil is not sprayed.
CAUTION
Do not touch sealing face of the rotating section or the
stationary section of the rotary seal (20 & 24) when removing or install-
ing seal. When seal replacement should be done in shop atmosphere if
possible.
2. Remove the spring of the lower rotary seal (24) from the shaft.
See rotary seal component placement diagram for part
identication.
3. Remove the pipe plug (1) in the side of the adapter (19) and drain
the oil from the chamber with the pump laying on it’s side.
4. Remove the four socket head screws (22) from the seal
retainer (23).
5. Use two screw drivers to lightly pry the seal retainer (23) from the
adapter (19). The remaining part of the lower seal assembly will
also be removed.
6. Press seal seat out of the seal retainer (23).
7. Remove the seal ring (18) from the seal retainer and inspect for
damage.
8. Slowly remove the oil plug (1) from the side of the motor housing
(12). (see warning above)
9. Turn the pump on it’s side to drain the motor chamber oil.
10. Remove the upper seal retainer ring (21) from the shaft and
remove the spring holder and seal spring of the upper rotary seal
(20) from the shaft.
11. Using a bearing puller or other suitable tools, pull the rotating
section of the upper rotary seal (20) from the rotor shaft. If needed,
carefully pry rotating section loose and pull off by hand.
12. The stationary seal can be pried with a screw driver. Be careful
not to chip as chips may fall into motor.
NOTE: If the adapter and motor housing are going to be separated to
work on the motor it may be easier to do so before removing the upper
seal. When the rotor and bearing are pulled from the adapter it will strip
the seal off the shaft on the lower side.
D. When removing the power and sensor cord assembly (6)...
1. Complete section A.
2. Remove the four screws (2) and lock washers (3) that secure the
cover (4) to the motor housing (12).
3. Pry the cover (4) off using two pry bars.
4. Remove the power and sensor cord lead connections from the
through wall terminals (10) and (11) in motor housing (12). Set cover
and cord assembly aside.
5. Remove seal ring (9) from the cover and inspect for damage.
6. To replace cord assembly. Remove four screws (8) and lock
washers (7).
7. Using a small pry bar, pry around the edges of the cord clamp area of
the cord and clamp assembly (6) to loosen it.
8. Remove the ground screw and disconnect the ground wire or wires
from the inside of the cover (4).
9. Pulling on the power leads on the inside of the cover, remove the cord
and clamp assembly (6) and seal (5) from the cover. The entire length
of the power and sensor cords will be pulled through the cover.
NOTE: It may take some wiggling and prying to loosen this assembly, because
the rubber seal (5) will have taken a set.
10. Inspect the cord seal (5) for damage.
E. When removing motor rotor (14)...
1. Complete sections A, B, and C. Section D may or may not be
completed rst. If the cord and cover assembly has been removed,
two 3/8" eye bolts will be required when lifting the motor housing and
stator off the unit.
2. Place the pump vertical on the work surface. The pump must be
blocked or set back in pump housing to allow shaft to extend out the
bottom.
3. Remove four screws (2) and lockwashers (3) between motor housing
(12) and adapter (19).
4. Lift the motor housing and stator (12) up off the adapter (19), high
enough to reach the moisture sensor wires (33) and unplug terminals
from moisture sensors (17).
NOTE: Some models may not have moisture sensors.
5. Finish lifting the motor housing (12) off the adapter (19). Be careful to
lift the motor housing straight up, so as not to damage the stator
windings or bearings.
6. Remove seal ring (18) from adapter (19) and inspect.
7. Remove bearing pre-load washer (32) from motor housing (12) and
inspect.
8. Remove rotor assembly (14) from adapter (19).
9. Using a bearing puller, against the inner race, remove the lower
bearing (16) and upper bearing (13) from the shaft. Replace the
bearings if needed.
NOTE: Bearings should be cleaned with volatile mineral spirits and relubricated
with proper lubricants immediately after cleaning. Never dry bearings with
compressed air, and never spin un-lubricated bearings.
F. Motor Stator...
NOTE: The motor housing and stator assembly removed in Section E number
5, is a factory assembled unit and must be replaced as such: it consists of the
motor housing, the glued in stator, the through the wall electrical terminals for
the power, and the moisture sensor wires if applicable.
G. Removing Sensor Studs...
1. Complete Section A, Section C #8, and Section E #6.
2. Unscrew moisture sensors (17) from the adapter (19). If moisture sensor
is equipped with a resistor, the resistor must be cut free before unscrewing
sensors.
ASSEMBLY PROCEDURES

5
© Copyright 2016 Zoeller®Co. All rights reserved.
Assembly Procedures
Pumps are reassembled in reverse order of dissemble. The following sugges-
tions are offered.
NOTE: While the pump is dismantled, all gaskets, seal rings and retaining
rings should be checked for wear and deterioration. Replace all worn items.
Insure that all parts are thoroughly cleaned before assembly.
A. Installing the sensor studs (17)...
1. Apply oil to threads of sensor studs (17).
2. Apply oil into threaded holes in adapter (19).
3. Screw sensor stud (17) into adapter (19) apply 34 in*lbs. of torque.
4. Place resistor leads into sensor tubing and crimp tubing.
B. Assembly of rotor (14)...
1. Inspect rotor to see that the snap ring is in place and snapped in
the groove. This snap ring serves as a locator for the lower
bearings.
NOTE: Before installing the bearing, wipe the bearing seats on the shaft clean
and coat the seats with oil to prevent galling of the shaft as the bearings are
pressed onto the shaft. A properly sized pressing sleeve should be used to
install bearings, with pressure being applied to only the inner bearing race.
2. Install the lower ball bearing (16) and the upper ball bearing (13)
on the rotor shaft (14).
3. Set the adapter (19) on blocks to allow the rotor shaft to clear the
work surface when installed.
4. Install the rotor/bearings assembly into the adapter housing (19).
Make sure the lower bearing is seated in the bearing pocket.
C. Installing the motor housing/stator (12)...
NOTE:
The motor housing/stator assembly is furnished from the factory as a
glued in unit. The assembly will include the motor housing, the stator prewired to
installed through wall terminals (10) and moisture sensor wires (33) if applicable.
1. Lightly oil and position the seal ring (18) around the pilot shoulder
of the adapter (19).
2. Install the pre-load washer (32) in the upper bearing pocket of
the housing/stator unit (12). The pre-load washer should be
stretched a little to allow it to remain in the pocket when turned
upside down.
3. With the rotor/adapter assembly in the vertical position suspend
the motor housing/stator unit over it. Slowly lower the unit
aligning the rotor and stator opening. If moisture sensors are
present plug the terminals of the wires (33) onto the sensor (17)
at this time.
4. Tuck the moisture sensor wires away from the rotor while
lowering the motor housing/stator unit into place on the adapter.
5. Secure the motor housing/stator (12) to the adapter (19) with
four screw (2) and four lock washers (3). Torque screws to
175-195 in-lbs.
NOTE: The small arrow heads on housing anges are to be aligned for proper
orientation.
D. Installing cord and cover assembly...
NOTE: The cord(s) will come from the factory as a cord(s) and clamp assembly
(6). The assembly consist of the power cord, the sensor cord if applicable, the
wire terminals, the clamp and the potting compound between the cords and clamp.
1. Unroll the cords of the cord and clamp assembly (6) and slide the cord
seal (5) down the cords to the clamp.
2. From the inside of the cover (4) place the cords of the assembly (6)
through the holes and pull through the top.
3. Push the cord seal (5) into it’s pocket inside the cover (4). Push the
clamp (6) tight against the seal.
4. Apply thread locker compounds to the screws (8) and install into
clamp along with lock washers (7). Using a cross pattern, tighten the
screws to the seal clamp evenly. Torque screws to 69-72 in-lbs.
5. Apply thread locker compound to ground screw and install ground
wires to cover.
6. Lightly oil and install seal ring (9) on shoulder of cover (4).
7. Suspend the cord and cover assembly over the motor housing and
make wiring connections per the proper wiring diagram.
NOTE: The power wiring goes to the numbered terminal, the moisture
sensor to M1 and M2 and the thermosensor to T1 and T2.
8. Tuck the wires in the cover assembly as installing the cover into
place.
9. Secure the cover (4) to the motor housing (12) with four screws (2)
and four lock washer (3). Torque screws to 175-195 in-lbs.
NOTE: The small arrow heads on the castings are to be aligned for proper
orientation.
E. Installation of rotary seals and seal retainer
CAUTION
Make sure all seal faces remain free of dirt particles.
Apply a light coat of oil to seal faces before installng.
1. Refer to rotary seal component placement diagram for relative
positioning of seal parts.
2.
Apply a coating of oil to the seal seat and the bore of the adapter (19),
and using a nonmetallic sleeve, press the seat into position in the
adapter.
UPPER ROTARY SEAL COMPONENT
PLACEMENT DIAGRAM
(Lower rotary seal is same except impeller hub
serves as spring holder and snap ring)
3. Apply 80-90 weight gear oil to the shaft and to the inside diameter
of the rotating section of rotary seal (20). Push the rotating section
onto the shaft in a continuous motion until the seal faces meet.
4. Install the spring and spring holder over the shaft and seat against
the rotating section. Compress the spring as necessary and install
retaining ring (21) in the groove of the motor shaft.
5. Lightly oil and install seal ring (18) on the seal retainer (23).
6. Press the seal retainer (23) into the adapter (19) and secure with the
four socket head screws (22).
7. Install the seal seat and rotating section of the lower rotary seal
assembly (24) into the seal retainer (23) in the same manner
described in steps 2 and 3 above.
F. Installing the impeller...
ZEPA0194
SEAL SEAT
SPRING
SNAP RING
SPRING
ROTATING
SECTION
HOLDER

6
© Copyright 2016 Zoeller®Co. All rights reserved.
Assembly Procedures (continued)
START KITS AND COMPONENTS
FOR SINGLE PHASE 61 HD SERIES
PART # DESCRIPTION
10-0918 KIT, STARTER MODEL 6111
012869 CAPACITOR, 50UF / 370 VAC
015155 RELAY, GE 3ARR22J10A2
012870 CAPACITOR, 270-324UF / 220-250V
PART # DESCRIPTION (BEFORE 10/1/07)
10-0916 KIT, STARTER MODELS 6120 / 6121
015030 CAPACITOR, 40UF / 370 VAC
007453 RELAY, UNIVERSAL SUPCO
007597 CAPACITOR, 324-389UF / 110-125V
PART # DESCRIPTION (AFTER 10/1/07)
10-2220 KIT, STARTER MODELS 6120 / 6121
015030 CAPACITOR, 40UF / 370 VAC
018967 RELAY, GE 3ARR3J4A2
008190 CAPACITOR, 216-259UF / 220-250V
PART # DESCRIPTION
10-0917 KIT, STARTER MODELS 6122 / 6123
012869 CAPACITOR, 50UF / 370 VAC
015156 RELAY, GE 3ARR22J6C2
012870 CAPACITOR, 270-324UF / 220-250V
PART # DESCRIPTION
10-1433 KIT, STARTER MODELS 6124
012869 CAPACITOR, 50UF / 370 VAC
015154 RELAY, GE 3ARR22J9R2
012870 CAPACITOR, 270-324UF / 220-250V
1. Install the spring of the lower rotary seal (24) on the exposed end of
the rotor/shaft.
NOTE: Spring holder not required on lower rotary seal.
2.Install the proper number of impeller shims (25) on the shaft to give the
face of the impeller (26) a clearance of 0.015 to 0.030 inch with the
wearing face of the pump housing (30). (See impeller clearance
diagram.)
3. Install the square key (15) in the groove in the shaft.
4. Install the impeller (26) and impeller washers (27).
Secure the impeller (26) by immobilizing it, use a pipe wrench to grip
the vanes and install the impeller bolt (28) in the end of the shaft.
NOTE: Apply thread locking compound to impeller bolt (28) before installing.
5. Lightly oil and install the seal ring (29) on the adapter (19) and install
the adapter on the pump housing, securing it with the four screws (2)
and lock washers (3).
Leak Test
(Before oiling pump) Perform a leak test on the pump seals by installing a
regulated air supply into the holes (¼" NPT access) the motor chamber, seal
chamber and cover chamber must be checked. The pressure of the air sup-
ply should be set at approximately 9 psi. Submerge the pump in clear water
watching for small air bubbles around square ring seals, rotary seal, cord
connection, and oil ll plugs.
NOTE: Make certain that the pump is placed in the water so that no areas
are present that would trap air (such as the cavity around the lower rotary
seal), not allowing the bubbles to rise to the water surface.
If it is not possible to leak test the pump using the submersion method,
a regulated air supply with a (0-15 psi) air gage can be installed in the ll
holes. The pump to be pressurized and held at 9 psi. After removing the air
supply, the pressure should not drop more than ½ psi in a 24 hour period.
G. Oilingandnalassembly.
1.
After leak testing has been completed, clean pipe plugs and reapply
pipe dope or teon tape. Install pipe plug (1) in cover (4).
2. The following electrical tests must be performed:
a) Using a Hypot or Megger, test all leads to case ground.
b) Check that there is continuity from the ground wire(s) to ground.
c) Check that there is no continuity from all lead wires to ground.
d) Check that there is continuity between the thermo sensor wires,
e) Check that the resistance between the moisture sensor wires is
330K ohms.
3. With the pump laying on its side with the oil ll hole up, ll the seal
chamber cavity with an anti-wear non-detergent, rust inhibiting,
parafning oil of approximately 100 SUS. (See table below for
acceptable type of oil.)
  Rener ProductName
Arco Duro 22 or 32
Exxon Teresstic 22 or 32 or acceptable equal
Chevron Clarity Hydrolic Aw ISO22 or ISO32
4. Clean pipe plugs and reapply pipe dope or teon tape. Install
pipe plug (1) in adapter (19).
5. While pump is on it’s side place approximately one quart of oil in
motor housing. (Use the same oil as used in the seal cavity.)
6. Set the pump upright and nish lling the motor chamber with oil
until it runs back out the ll hole. With the oil running out the ll hole
the oil will be at the proper level for the top bearing.
Donotoverll.
7. Clean pipe plug and reapply pipe dope or teon tape. Install
pipe plug (1) in motor housing (12).

7
© Copyright 2016 Zoeller®Co. All rights reserved.
START WINDING
MAIN WINDING
MOTOR
BLACK OR WHITE BLACK OR WHITE
THERMOSTAT
CHAMBER
SEAL
CHAMBER
MOTOR
POWER CORD
M2M1T2T1
PURPLE BROWN
M2M1T2T1
WHITE BLACK ORANGE RED
GREEN
SENSOR CORD
321
321
2 31
CHAMBER
COVER
WHITE RED BLACK
GREEN
330K OHMS RESISTANCE
SENSOR FAILURE PROBES
(BEFORE 6/2000 NORMALLY OPEN)
SENSOR FAILURE PROBES
M2
M2
MOTOR
BLACK OR WHITE BLACK OR WHITE
WINDINGS
THERMOSTAT
T1
T1
BROWN
M1
M1
T2
T2
PURPLE
321
3
3
2
2
1
1
CHAMBER
SEAL
CHAMBER
MOTOR
WHITE RED BLACK ORANGE
WHITE
GREEN
RED BLACK
SENSOR CORDPOWER CORD
COVER
CHAMBER
GREEN
330K OHMS RESISTANCE
(BEFORE 6/2000 NORMALLY OPEN)
Wiring Diagrams
B00488 B00487
3 PHASE 61 HD SERIES SINGLE PHASE 61 HD SERIES
WIRING COMPONENT LAYOUT
SINGLE PHASE MODELS 6120 / 6121
USING SUPCO PR90 RELAY BEFORE 10/1/07
ZEPA0477A
(OPTIONAL) (OPTIONAL)
ZEPA0537
WIRING COMPONENT LAYOUT
SINGLE PHASE MODELS 6111 / 6122 / 6123 / 6124
AND 6120 / 6121 USING GE RELAY AFTER 10/1/07
2
4
1
6
5
WHITE
PUMP
START
MAIN
BLACK
L2
WHITE
BLACK
RUN CAPACITOR
RED
START CAPACITOR
L1
T2T1
START
RELAY
3
2
1
GREEN
230 VAC 1ø
(SEE CHART) (SEE CHART)
START CAP.
324-389UF 125V
MODELS
6120/6121
RUN CAP.
40UF 370V
A
21
5
WHITE
PUMP
START
MAIN
BLACK
L2
WHITE
BLACK
RUN CAPACITOR
RED
START CAPACITOR
L1
T2T1
3
2
1
GREEN
230 VAC 1ø
(SEE CHART) (SEE CHART)
START CAP.MODELS RUN CAP.
R
RELAY
START
6111/6122/6123/6124 270-324UF 250V 50UF 370V
6120/6121 216-259UF 125V 40UF 370V

COMMON CAUSES
B. Motor overheats and trips overload or blows fuse.
- Incorrect Voltage
- Unbalanced power source
- Incorrect motor rotation
- Negative or low head
- Excessive water temperature
- Impeller or seal mechanically bound
- Defective capacitor or relay
- Motor shorted
- Lost one line in a Three Phase unit
C. Pumps starts and stops too often.
- Check valve stuck open
- Level controls out of adjustment
- Temperature sensor tripping
- Thermal overload switch out of
adjustment or defective
- Pit too small
D. Pump will not shut off.
- Debris under oat switch
- Float travel obstructed
- Defective or damaged oat switch
- Magnetic starter contacts shorted
- Air lock - check vent hole
E. Pump operates but delivers little or no water.
- Check for plugged Pump housing, discharge
pipe or sticking check valve
- Vent hole clogged or not drilled
- Discharge head exceeds pumps capacity
- Low or incorrect voltage
- Incorrect motor rotation
- Defective capacitor
F. Drop in head and/or capacity after a period or use.
- Increase Pipe Friction
- Clogged line or check valve
- Abrasive material & chemical,
deteriorated impeller and pump housing
If the above check list does not uncover the problem, consult the factory - Do not attempt to service or otherwise disassemble pump.
Service Checklist & Trouble Shooting
ELECTRICAL PRECAUTIONS Before servicing a pump, always shut off the main power breaker to the panel and then
disconnect the pump - making sure you are wearing insulated protective sole shoes and are not standing in water. Under ooded condi-
tions, contact your local electric company or a qualied licensed electrician for disconnecting electrical service prior to pump removal.
Submersible pumps contain oils which become pressurized and hot under operating conditions - allow 2½ hours after
disconnecting before attempting service.
CONDITION
A. Pump will not start or run.
Steps Check Voltage At If No Voltage If Voltage
No. 1 Line terminals in pump's
control panel
L1- L2- L3(3 Phase).
Check Disconnect switch, line fuse, and/
or circuit breakers in power supply circuit.
Proceed to No. 2.
No. 2 Pump motor terminals in
pump’s control panel
T1- T2- T3.
Check for control circuit voltage. Check
out magnetic starter contacts, thermal
overloads, and oat switches.
Check starting relay and capacitor (1 phase
units). Check pump for ground, and binding
impeller.
© Copyright 2014 Zoeller Co. All rights reserved.