EBARA DL3FU Operating and maintenance manual

Submersible Wastewater, Sewage Pump
Model DL3FU
Operating Instructions, Installation & Maintenance Manual
EBARA Pumps Americas Corporation

PM32U
TO
SET
TITLE INSTRUCTION MANUAL DOC. No. 6316-M91251 REV. 2
CUSTOMER
COMPLETE IN
WITH COVER
24 SHEETS
FINAL USER
PROJECT SERVICE
SUBMERSIBLE WASTE WATER
PUMP
JOB No. EBARA SER. No.
ITEM No.
EQUIP. 60Hz Ver. SET
MODEL
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU / DML3FU
5
K. HIRAMOTO
Jan.28.
’
2019
4
APPROVED BY
3
M. IMAFUKU
Jan.25.
’
2019
2
REVISED P3-5, 7, 8, 10-12,
15,17-20, 23, 24
Apr. 21.’20
K. HIRAMOTO
T. MAEDA
CHECKED BY
M. NAGAI
Jan.25.’2019
1
REVISED P4, 5, 11, 14, 22
ADDED P9, 10, 12, 13
Mar. 5.’20
K. HIRAMOTO
T. MAEDA
REV.
PAGE
DATE
APP’D
BY
PREPARED BY
T. MAEDA
Jan.24.’2019
ISSUED BY
Submersible MP Dev. & Eng. Sect.
2
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21

3
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
1. Preface ..................................................................................................... P.4
2. Acceptance Inspection ................................................................................ P.4
3. Installaiton ................................................................................................... P.4
3.1 Check the Following Points (1) Through (5)
Prior to Pump Installation .......................................................... P.4
3.2 Pump Installation ....................................................................... P.9
4. Electric Wiring ............................................................................................. P.13
4.1 Power Cable Connection ........................................................... P.13
4.2 Grounding .................................................................................. P.16
4.3 Protective Device Leads Connection ......................................... P.17
5. Operation ..................................................................................................... P.18
5.1 Operational Limitations ............................................................... P.18
5.2 Checking Rotation Direction ....................................................... P.18
5.3 Cautions for Operation ............................................................... P.20
5.4 Operation ................................................................................... P.20
5.5 Cautions during Operation ......................................................... P.20
6. Maintenance and Overhaul .......................................................................... P.21
6.1 Daily Checks ............................................................................... P.21
6.2 Monthly Checks .......................................................................... P.21
6.3 Annual Checks ........................................................................... P.21
6.4 Parts that will be replaced ......................................................... P.24
7. Troubleshooting ........................................................................................... P.31
8. Startup Form ................................................................................................ P.32
9. Limited Warranty .......................................................................................... P.33

4
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.3
PM32U
1. Preface
Design of this EBARA pump is based on superior engineering and long experience. It is
important to understand the EBARA pump thoroughly by careful study of this manual to prevent
accidents and provide satisfactory operation and long life. If any questions arise regarding this
manual, please direct them to EBARA. Your questions will be promptly answered, and your
suggestion may be considered for incorporation into our future products.
CAUTION : THIS INSTRUCTION MANUAL INCLUDES NECESSARY ITEMS FOR
INSTALLATION, OPERATION AND MAINTENANCE. READ THIS MANUAL CAREFULLY TO
ENSURE CORRECT INSTALLATION, OPERATION AND MAINTENANCE.
BE SURE TO KEEP THIS INSTRUCTION MANUAL ON HAND FOR FUTURE REFERENCE.
Safety Labels
Four different types of safety labels are used in this manual. Please study the labels carefully
so that the meaning of any safety warning you encounter is immediately clear.
DANGER : indicates a potentially hazardous situation which, if not avoided, will result
in death or serious injury.
WARNING : indicates a potentially hazardous situation which, if not avoided, could result
in death or serious injury
CAUTION : indicates a potentially hazardous situation which, if not avoided, may result
in minor or moderate injury or possible damage to the equipment or machine.
Note : is used to call attention or to emphasize essential information.
2. Acceptance Inspection
Upon arrival of the pump –
(1) Check the nameplate information for agreement with specifications in respect to model
identification, head, pumping capacity, speed, power, voltage, and frequency.
(2) Check the pump has not been damaged during shipment and all plugs and fastening
bolts are properly tightened.
(3) Check accessories and spare parts against the packing list.
If any problem is found, contact your dealer.
3. Installation
3.1 Check the Followings Points (1) through (3) Prior to Pump Installation
(1) Ensure that the internal liquid chamber is filled with specified amount and all plugs and
fastening bolts are properly tightened.
(2) Insulation resistance values are within limits. Check the pump is not damaged and the
cable glands and cables are in satisfactory condition.
(3) Other points that require particular attention.
!
!
!
!

5
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.4
PM32U
3.1.1 Internal Liquid Supply (Figs. 1, 2 and 3)
2~5HP(1.5-3.7kW) models come standard without internal cooling system and are shipped with proper
oil capacity per Table 2. 7.5~60HP(5.5~45kW) are standard with internally cooled system (no oil fill
required) and are shipped with proper coolant capacity per Table 1.
Fig. 1Fig. 2
The motor shaft is sealed with a mechanical seal. The coolant chamber provided between the
two sealing stages can be filled with coolant by standing the pump vertical on a level surface
and remove plugs “Coolant supply hole”and “Air vent & full level check hole”.
CAUTION: THE SEAL CHAMBER MAY BE UNDER PRESSURE. HOLD A RAG OVER
THE PLUG TO PREVENT SPLATTER.
Pour the specified coolant into the coolant chamber through “Coolant supply hole”until the
coolant flows out of “Air vent & full level check hole”. (See Table 1)
After the coolant chamber is filled to the specified level, plug the two holes.
!
Air vent & full level check hole
50%: Propylene Glycol
50%: Water
Coolant supply hole
COOLANT (Internal liquid)

6
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.5
PM32U
OIL (Internal liquid)
Pump models 2~5HP(1.5~3.7kW) come standard with oil. Capacities are listed in Table 2.
Models noted by an asterisk (*) in Table 1, have an optional internal cooling system (for coolant
capacities refer to Table 1).
Table 1
Fig. 3
APPROX.
OIL
CAPACITY
[ L ]
50 DL3FU 61.5 *STD 1.1
80 DL3FU 61.5 *STD 1.1
80 DL3MFU 61.5 *STD 1.1
80 DL3MU 61.5 *STD 1.1
80 DL3FU 62.2 *STD 1.4
80 DL3MFU 62.2 *STD 1.3
80 DL3FU 63.7 *STD 1.4
80 DL3MFU 63.7 *STD 1.4
100 DL3MFU 61.5 *STD 1.1
100 DL3FU 61.5 *STD 1.0
100 DL3MFU 62.2 *STD 1.4
100 DL3FU 62.2 *STD 1.3
100 DL3MFU 63.7 *STD 1.4
100 DL3FU 63.7 *STD 1.3
PUMP MODEL
Table 2
Reinstall plug firmly
after filling oil
APPROX.
COOLANT
CAPACITY
[ L ]
PUMP MODEL
APPROX.
COOLANT
CAPACITY
[ L ]
50 DL3FU 61.5 *OPT 9.5 100 DL3MFU 622 33.2
80 DL3FU 61.5 *OPT 9.5 100 DL3FU 630 39.4
80 DL3MFU 61.5 *OPT 9.5 100 DL3FU 637 38.8
80 DL3MU 61.5 *OPT 9.5 100 DL3FU 645 42
80 DL3FU 62.2 *OPT 11.6 150 DL3FU 67.5 23
80 DL3MFU 62.2 *OPT 11.1 150 DL3FU 611 19.1
80 DL3FU 63.7 *OPT 11.6 150 DL3FU 615 22.5
80 DL3MFU 63.7 *OPT 11.6 150 DL3FU 618 30.7
80 DL3FU 65.5 23.5 150 DL3FU 622 33.2
80 DL3MFU 65.5 23.5 150 DL3FU 630 38.7
80 DL3FU 67.5 23 150 DL3FU 637 35.8
80 DL3CMFU 67.5 23.8 150 DL3FU 645 39
80 DL3FU 611 19.3 200 DL3FU 67.5 23
80 DL3CMFU 611 19.7 200 DL3FU 611 19.1
80 DL3FU 615 22.5 200 DL3FU 615 22.5
80 DL3FU 618 31 200 DL3FU 618 30.7
80 DL3FU 622 33.2 200 DL3FU 622 33.2
100 DL3MFU 61.5 *OPT 9.5 200 DL3FU 630 38.7
100 DL3FU 61.5 *OPT 8.8 200 DL3FU 637 35.8
100 DL3MFU 62.2 *OPT 11.1 200 DL3FU 645 39
100 DL3FU 62.2 *OPT 11.3 250 DL3FU 611 19.1
100 DL3MFU 63.7 *OPT 11.5 250 DL3CFU 615 22.5
100 DL3FU 63.7 *OPT 11.3 250 DL3BFU 615 22.1
100 DL3FU 65.5 23 250 DL3FU 618 30.7
100 DL3MFU 65.5 23.5 250 DL3FU 622 32.6
100 DL3FU 67.5 23 250 DL3FU 630 38.7
100 DL3MFU 67.5 23 250 DL3FU 637 35.8
100 DL3MFU 611 19.3 250 DL3FU 645 39
100 DL3FU 611 19.1 300 DL3FU 618 30.1
100 DL3FU 615 22.5 300 DL3FU 622 32.1
100 DL3MFU 615 22.5 300 DL3FU 630 42.2
100 DL3FU 618 31 300 DL3FU 637 35.8
100 DL3MFU 618 31 300 DL3FU 645 40
100 DL3FU 622 33.2
PUMP MODEL
38.8
35.8
35.8
35.8
35.8

7
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.6
PM32U
3.1.2 Insulation Resistance Measurement
WARNING: ALL ELECTRIC WORK SHOULD BE PERFORMED BY A QUALIFIED
ELECTRICIAN AND ALL NATIONAL AND LOCAL ELECTRICAL CODES MUST BE
OBSERVED.
Although insulation resistance of this pump was shop tested, it should be rechecked prior to
installation, using the following procedure. Usually, insulation resistance of a minimum of 1MΩ
is considered satisfactory (when measured with a DC 500V Megger).
Measurement procedure (Refer to Figs. 4 and 5)
Connect the minus (-) terminal of the DC 500V Megger to the G terminal of the cable, or a
motor bolt.
Touch the plus (+) terminal of the Megger to L1-phase (or L2-phase or L3-phase) of the cable
and read the insulation resistance.
Also, touch the plus (+) terminal of the Megger to P1 (or P2) and P3 (or P4), with the minus (-)
terminal G connected as above, and read the insulation resistance.
CAUTION: DO NOT CONNECT THE TWO MEGGER TERMINALS BETWEEN P1 AND
P2, OR P3 AND P4, TO AVOID DAMAGE TO THE PROTECTIVE DEVICE.
KEEP THE MOTOR CABLE OFF THE GROUND WHILE TAKING ALL MEASUREMENTS.
Fig. 4
!
!
Motor Cable
L1
L2
L3
G
P1
P2
P3
P4
－
＋
DC500V
Megger
Motor Cable
：
Multi Conductors
・For Power
L1 : Red
L2 : White
L3 : Black
・For Ground
G : Green
・For Protective Device
P1 : Red / White lined
P2 : White / Red lined
P3 : Black / Orange lined
P4 : Orange / Black lined
Motor Cable : Multi Conductors
• For Power
L1 : Red
L2 : White
L3 : Black
• For Ground
G : Green
• For Protective Device
P1 : Red
P2 : White
P3 : Black
P4 : Orange

8
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.7
PM32U
3.1.3 Other Checks Requiring Particular Attention
(1) Minimum operating water level:
Be sure that the pump stop level is not lower than the minimum operating water level
specified in the technical document found on the EBARA website. If the stop level is
lower, a vortex flow can occur causing the pump to intake air, resulting in noise and
vibration.
If there is possibility that the minimum water level may decrease to an excessive extent,
it is necessary to use a minimum water level alarm. An alternative measure would be
a water level-dependent control system that turns the motor off automatically. It will
stop the pump when the water level is lowered than the critical level and is turned on
again to resume automatic operation when water is restored to a safe level.
(2) Pump location relative to pump pit water inlet:
If the pump is installed near the pump pit water inlet, the incoming flow to the pump
can be considerably turbulent; the influent liquid can shake the pump and cause the
cable(s) to be whipped vigorously, resulting in damage. Therefore, the pump should
be located as far from the water inlet as possible or an influent baffle should be installed.
(3) Size of debris:
Entry of large or long debris can result in a blocked impeller.
If such problem occurs, the pump can be readily lifted out and disassembled for
servicing, which is however, time and labor consuming.
The primary consideration therefore should be to prevent the ingress of any oversized
objects into the sump by use of a screen, etc. Another important consideration is to
minimize presence of abrasive substances, such as sand, in the liquid.
If the contents of such substances become high, the impeller is increasingly worn,
leading to the degradation of capacity.
Note : In case of any problems listed above actually occur, contact EBARA immediately.
Winding Coil
Thermal Detector
Leakage Detector
G
P2
L2
L1
L3
P1
P3
P4
Motor Cable
Fig. 5

9
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.8
PM32U
3.2 Pump Installation
WARNING: WHEN LIFTING THE PUMP, USE AN APPROPRIATE CRANE (OR A
HOIST) AND LIFT SYSTEM.
CHECK POSITION AND TIGHTNESS OF LIFT SYSTEM SO THAT WEIGHT OF THE PUMP
IS NOT UNBALANCED.
FAILURE TO OBSERVE THIS PRECAUTION CAN RESULT IN SERIOUS ACCIDENTS.
CAUTION: BEFORE INSTALLATION CHECK ROTATION.
CORRECT ROTATION IS CLOCKWISE WHEN VIEWED FROM TOP OF MOTOR.
READ ELECTRICAL WIRING.
(1) When installing directly on the floor.
1. Clean the installation area.
2. Under no circumstances should the cable be pulled
while the pump is being transported or installed.
Attach a rated lifting chain or strap to the pump
lifting bail and install the pump.
3. This pump must not be installed on its side. Ensure
that it is installed upright on a secure base.
4. Install the pump at a location in the tank where
there is the least turbulence.
5. If there is a flow of liquid inside the tank, support the
cable where appropriate (See Fig. 6).
6. Install piping so that air will not be entrapped. If
piping must be installed in such a way that air
pockets are unavoidable, install an air release valve
wherever air pockets are most likely to develop.
7. Do not permit the end of discharge piping to be
submerged, as backflow will result when the pump
is shut down.
8. Non-automatic pumps (model DLFU, DLMFU) do
not have an automatic operating system using built-
in floats. Do not operate the pump for a long time
with the water level near the minimum operating
level as the automatic cut-off switch incorporated
inside the motor will be activated.
!
!
Fig. 6

10
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.9
PM32U
(2) When installing using QDC (Quick Discharge Connector).
1. After the pump is thoroughly checked, verifying it is in order, lift the pump body and fit the
sliding guide of the pump body to the guide pipe.
WARNING: USE CAUTION DURING PUMP INSTALLATION AND REMOVAL TO
MINIMIZE CONTACT BETWEEN PUMP AND ANY MATERIAL THAT CAN GENERATE AN
IGNITION SOURCE SUCH AS A SPARK. HAVE FIRE SUPPRESSION EQUIPMENT ON
HAND.
Fig. 7
Guide pipe (304
Stainless Steel) contacts
arm attachment (Brass).
Brass only used on non-
sparking QDC
!
SLIDING GUIDE
GUDE PIPE
ARM
ATTACHMENT
DISCHARGE ELBOW

11
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.10
PM32U
2. Then, lower the pump body slowly along the pump guide.
WARNING: CAUTION SHOULD BE TAKEN DURING PUMP INSTALLATION AND
REMOVAL TO MINIMIZE CONTACT BETWEEN PUMP AND ANY MATERIAL THAT CAN
GENERATE ANY IGNITION SOURCE SUCH AS A SPARK. HAVE FIRE SUPPRESSION
EQUIPMENT ON HAND.
3. The pump is automatically connected to the discharge elbow.
Sliding guide attaches to
support bar (420
Stainless Steel).
Pump rotates around
point of support bar.
SUPPORT BAR
Fig. 9
Fig. 8
Each flange contacts
face to face.
!

12
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.11
PM32U
If the pump cannot slide down smoothly, the guide pipe may not be vertical, or the lifting method
may be wrong. Check these points to determine the cause for correction.
After the pump is installed attach the chain to the hook of the floor frame.
When the pump is installed indoors, it is a good idea for convenience sake that a hoist, for
example, be provide on the ceiling or surface platform so that it can be moved to the pump
lifting center when necessary.

13
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.12
PM32U
4. Electric Wiring
4.1 Power Leads Connection
WARNING: CHECK THAT THE POWER IS LOCKED OUT AND TAGGED OUT AND
DISCONNECTED BEFORE WORKING ON PUMP. ALL ELECTRICAL WORK SHOULD BE
PERFORMED BY A QUALIFIED ELECTRICIAN AND ALL NATIONAL AND LOCAL
ELECTRICAL CODES MUST BE OBSERVED.
WARNING: IF THE PURCHASED PUMP IS AN FM EXPLOSION-PROOF PRODUCT,
CHANGING OF THE INTERNAL MOTOR WIRING I.E. CHANGING 208/230V ⇆ 460V) MUST
BE PERFORMED AT EBARA’S FM APPROVED SERVICE SHOP. UNAUTHORIZED WORK
MAY IMPAIR EXPLOSION-PROOF PERFORMANCE. THIS IS DANGEROUS AND MUST BE
AVOIDED!
Wiring
a) Wire as indicated for the appropriate start system as shown in Fig. 10.
b) Loose connections will stop the pump. Make sure all electrical connections are secure to
prevent short circuit.
The electric wiring for a submersible motor is no different from an ordinary motor, except the
direction of rotation cannot be easily verified.
Wiring to wrong terminals results in reverse rotation. To prevent this and to achieve best results,
the following wiring procedure is recommended.
Connect terminals L1, L2 and L3 to the secondary terminals L1, L2 and L3 of the
electromagnetic switch or breaker respectively. Connect the remaining terminal G to ground.
Ground
Power source
G
L3
L2
L1
WARNING: WHEN PREPARING POWER CABLE LEADS FOR CONNECTION TO
CONTROL, IT IS ESSENTIAL THAT THE GROUND LEAD BE LONGER THAN THE POWER
LEADS. THE GROUND LEAD MUST HAVE AT LEAST 2 ” (50 MM) SLACK REMAINING
AFTER CONNECTION, CUSTOMER TO ENSURE SUFFICIENT SPACE. THIS IS DONE
FOR ELECTRICAL SAFETY. IF THE CABLE IS MISTAKENLY PULLED OUT, THE GROUND
LEAD WILL BE THE LAST WIRE BROKEN.
!
!
!

14
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.13
PM32U
Output 2 to 10HP
208/230V
460V
P1
P2
T2
T1 T3
L1
L2
L3
R
S
T
G
P3
P4
THERMAL PROTECTOR
LEAKAGE DETECTOR
T8
T7 T9
T4
T5 T6
T1
T2
T5
T6
T3
T4
P1
P2
T8
T7 T9
L1
L2
L3
R
S
T
G
P3
P4
THERMAL PROTECTOR
LEAKAGE DETECTOR
G - GRN
L1 - RED - T1 - T7
L2 - WHT - T2 - T8
L3 - BLK - T3 - T9
T4 - T5 - T6
P1 - RED
P2 - WHT
P3 - BLK
P4 - ORG
G - GRN
L1 - RED - T1
L2 - WHT - T2
L3 - BLK - T3
T4 - T7
T5 - T8
T6 - T9
P1 - RED
P2 - WHT
P3 - BLK
P4 - ORG

15
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.14
PM32U
Output 15 to 30HP
208/230V
460V
T9
T1
T3
T6
T7
T2
T5
T8
G
P1
P2
P3
P4
THERMAL PROTECTOR
LEAKAGE DETECTOR
R
T
S
L1
L2
L3
T4
T9T1 T3T6
T4
T7
T2
T5
T8
G
P1
P2
P3
P4
THERMAL PROTECTOR
LEAKAGE DETECTOR
R
T
S
L1
L2
L3
G - GRN
L1 - RED - T1 - T7 - T6
L2 - WHT - T2 - T8 - T4
L3 - BLK - T3 - T9 - T5
P1 - RED
P2 - WHT
P3 - BLK
P4 - ORG
G - GRN
L1 - RED - T1
L2 - WHT - T2
L3 - BLK - T3
T4 - T7
T5 - T8
T6 - T9
P1 - RED
P2 - WHT
P3 - BLK
P4 - ORG

16
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.15
PM32U
Output 40 to 60HP
460V(208/230V not available)
4.2 Grounding (Fig. 11 and Table 3)
Be sure to connect the ground line (labeled “G”) to ground. Prior to grounding, ensure that the
wire is the proper one (labeled “G”).
Also, verify that grounding continuity has been established inside the motor by checking that
ground wire (labeled “G”) is electrically conductive with the bolt on the top of the motor (to be
stripped of paint to bare metal surface).
Ground the motor according to local codes.
Ground terminal
Ground wire
Ground
plate
G.L
Table 3 (Example)
Motor
classification
Grounding
resistance
Minimum Ground
line diameter per
AC 600V below
10Ω
NEC 70
T2
T3T6
T4
T1 T5
G
S
R
T
P1
P2
P3
P4
THERMAL PROTECTOR
LEAKAGE DETECTOR
L2
L1
L3
Fig. 11
G - GRN
L1 - RED - T1- T6
L2 - WHT - T2 - T4
L3 - BLK - T3 - T5
P1 - RED
P2 - WHT
P3 - BLK
P4 - ORG

17
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.16
PM32U
4.3 Protective Device Leads Connection (Table 4)
This pump has a leakage detector at the motor bottom, and a thermal detector in the stator coil
to protect the motor. Connect terminals P1 and P2 for the thermal detector to P1 and P2 of the
same control connector. Also, connect terminals P3 and P4 for the leakage detector to P3 and
P4 of the same control connector. Table 4 shows detailed specifications regarding protective
devices.
Table 4
Thermal detector
Leakage detector
Type
9700K 66-215
OLV-5 (float type)
Acting Temperature
Reset Temperature
140 +/- 5oC
85 +/- 10oC N/A
Contact rating
AC 115V/230V×18A/12A (max)
AC 300V×0.5A (max)
Contact type
normally closed (b-contact)
normally closed (b-contact)
Cable terminal
identification
P1
P2
P3
P4
WARNING: AN EARTH LEAKAGE BREAKER MUST BE USED ACCORDING TO LAW
TO PREVENT ELECTRICAL ACCIDENTS.
CAUTION: A MOTOR PROTECTIVE DEVICE SHOULD BE INSTALLED ON CONTROL
PANEL TO PROTECT THE SUBMERSIBLE MOTOR AGAINST OVERCURRENT, OPEN
PHASE, REVERSE PHASE.
!
!
Float Type Reed Switch

18
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.17
PM32U
5.
Operation
5.1 Operational Limitations
This pump is designed to operate under the following conditions:
(1) Liquid temperature: max. 40ºC (105ºF）
(2) Liquid: This pump must not be used with sea water and corrosive chemicals or
combustible liquids.
(3) Lowest liquid level: Refer to lowest liquid level shown in the technical document.
(4) Voltage variations: The motor is designed to supply its rated output at variations of
up to ±10% of the rated voltage at the rated frequency.
(5) Frequency variations: The motor is designed to supply its rated output at variations
of up to ±5% of the rated frequency at the rated voltage.
(6) Combined variations: When the variation of voltage and frequency are combined,
the total variation is limited to a maximum of 10 percent (sum of absolute values) of
the rated values, provided the frequency variation does not exceed ±5% of rated
frequency.
5.2 Checking Rotation Direction (Figs. 12 and 13)
Check the motor for rotation direction by the following procedure after the pump has been
installed in the pump pit.
A reversing pump is no problem if operation is not prolonged.
(1) If the pump performance curve is available.
Open the sluice valve on the discharge side approximately half a turn (so that air is
released, and a small quantity of liquid is discharged), and turn the main switch ON.
With all air released from the discharge pipe, fully close the sluice valve.
At this time, if the value of shut-off Total Discharge Head meter (m)
where;
Total Discharge head = H1+H2 (m)
H1 (m) Compound pressure gauge reading
H2 (m) Vertical distance from gauge to liquid surface
is generally in agreement with the pump performance at hand, the pump is operating
normally.
If the pump is reversed, a performance curve as denoted by dashed lines in Fig. 12 is
usually obtained, where the pump’s discharge pressure is lower than normal or
specified, and a sudden rise in electric current occurs with gradual opening of sluice
valve.
In this event, change connections as shown in Fig. 13.

19
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.18
PM32U
(Head)
Total head
(H1 + H2) m
Shaft output
(Amperage)
Total head
Rated output
(Rated amperage)
(Capacity)
Solid line : Normal
Broken line : Reversed
Fig. 12 Pump performance of Normal Rotation VS reverse rotation
L1 L2 L3
L2L1 L3
MotorMotor
L3L1 L2
L3L2L1
Fig. 13 Change two of Connections for proper rotation and Normal Pump Performance
(2) If the pressure gauge or compound pressure gauge is not installed on the discharge
pipe, if checks of the rotating direction of the pump in the water as described above
cannot be performed, proceed as follows.
Lay the pump on the ground. Turn switch on and off instantaneously and check visually
the rotation direction through the discharge bore of the pump. The rotating direction of
the pump should be clockwise when viewed from top of motor.
CAUTION:SINCE THE STARTING TORQUE ON LARGE PUMPS CAN BE POWERFUL,
THE PUMP MUST BE PROPERLY SUPPORTED.
DANGER: DURING CHECKING THE DIRECTION OF ROTATION, DO NOT TOUCH
ROTATING PARTS OF THE PUMP. KEEP HANDS, FEET, LIMBS, HAIR AND TOOLS AWAY
FROM ROTATING PARTS TO PREVENT SERIOUS ACCIDENTS.
!
!

20
EBARA PUMPS AMERICAS CORPORATION
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097 rev. 01/21
EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
INSTRUCTION MANUAL P.19
PM32U
5.3 Cautions for Operation
Closed valve operation is not problematic to the pump if it is not operated for a prolonged period
of time. Otherwise, the pump will overheat, or rattle, or vibrate. This can result from backward
flow at the suction port.
Avoid closed valve operation as much as circumstances allow.
5.4 Operation
(1) Starting
・Open the valve if provided.
・Start motor
Note: A pump of lower shut off power than rated horsepower may be started with the valve
closed.
In such case, open the valve within 1 minute after motor start.
CAUTION: DO NOT RUN THE MOTOR IF REVERSE FLOW OCCURS.
(2) Stopping
・Stop motor (Turn off power)
Note: A pump of lower shut off power than rated horsepower may be stopped after the valve
is closed.
5.5 Cautions During Operation
Pay attention to abnormal noise and vibration. If air or foreign matter enters the pump or if there
is a change in the operating point, mis-operation or valve defect in the discharge lines,
abnormal noise and vibration can occur. Pump discharge pressure can also vary greatly, or
the current meter of the motor can vary suddenly during operation.
In such cases, immediately check to find the cause of these problems.
!