411143 2 Meyers 3Whv Manual User
411197 2 Meyers 3Whv Manual 411197_2_Meyers 3WHV Manual
411194 2 Meyers 3Whv Manual 411194_2_Meyers 3WHV Manual
411195 2 Meyers 3Whv Manual 411195_2_Meyers 3WHV Manual
411189 2 Meyers 3Whv Manual 411189_2_Meyers 3WHV Manual
411157 2 Meyers 3Whv Manual 411157_2_Meyers 3WHV Manual
User Manual: Pump 411143 2 Meyers 3Whv Manual
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4WHV
3WHV
NOTE! To the installer: Please make sure you provide this manual to the owner of the equip ment or to the responsible
party who maintains the system.
MODELS 3WHV, V3WHV, 3WHR,
4WHV, V4WHV and 4WHR
SUBMERSIBLE SOLIDS
HANDLING PUMPS
INSTALLATION AND SERVICE MANUAL
For use with product built with Regal-Beloit motor.
Part # 23833A661 | © 2013 Pentair Ltd. | 11/21/13
23833A661 11/21/13 2
SAFETY WARNINGS:
Before Installation: This manual contains
important information for the safe use of this
product. Read this manual completely and follow
the instructions carefully. Reasonable care and
safe methods relating to the installation and
operation of this product should be practiced.
Check local codes and requirements before
installation.
m DANGER: Risk of Electrical Shock or
Electrocution. May result in serious injury
or death or fire hazard. Installer must
disconnect all electrical sources prior to
installation, handling or servicing. Only
qualified personnel may install this system.
NFPA 70/National Electric Code (NEC) or
local codes must be followed. System must
be properly grounded according to NEC. Do
not lift pump by power cord.
m DANGER: Biohazard Risk. Once wastewater
source has been connected to system,
Biohazard Risk exists. Installer(s) and/or
service personnel must use proper Personal
Protective Equipment and follow handling
procedures per OSHA 29 CFR 1910.1030
when handling equipment after wastewater
source has been connected to system.
m DANGER: Risk of Asphyxiation. Installer(s)
and/or service personnel must use proper
Personal Protective Equipment and follow
OSHA 29 CFR 1910.146 or OSHA 29 CFR
1926. Pump may be installed in a location
classified by as a confined space.
m DANGER: Risk of Fire or Explosion. Do
not smoke or use open flames in or around
this system. This system is intended for
use in hazardous locations per NFPA 70
National Electric Code. Do not pump
flammable liquids.
m DANGER: Cutting Risk. Risk of serious
cutting or amputation exists. Disconnect
all power sources prior to servicing pump.
Pump may start without warning.
m DO NOT modify the cord and plug. When
using the cord and plug, plug into a grounded
outlet only. When wiring to a system control,
connect the pump ground lead to the
system ground.
m DO NOT run the pump dry. Dry running can
overheat the pump (causing burns to anyone
handling it) and will void the warranty.
m The pump normally runs hot. To avoid burns,
allow it to cool for 30 minutes after shutdown
before handling it.
m Submersible sump pumps are not approved
for use in swimming pools, recreational water
installations, decorative fountains or any
installation where human contact with the
pumped fluid is common. Pump designed to
be installed in a sump or wet location where
drainage collects.
DO NOT THROW AWAY OR LOSE THIS
MANUAL. Keep it in a safe place so that you
may refer to it often for the continued safe
operation of the product.
PUMP MODELS:
These instructions cover the installation and
service of the 3WHV/V3WHV/3WHR and
4WHV/V4WHV/4WHR series of solids handling
pumps and guide rail systems for the horizontal
discharge models only. These models are
designed for handling raw sewage and
wastewater. Do not use for acid wastewater.
The pumps have vortex, solids handling
impellers. These pumps will pass 3" dia. solids
and has a 3" or 4" std. flange discharge.
SEAL FAILURE (4WHV/ V4WHV/ 4WHR ONLY):
These pumps have a probe installed in the seal
chamber, so that any leakage past the lower seal
is detected. A red warning light at the control
panel comes on if water enters the seal chamber.
This is an indicator only and does not stop the
motor. It warns that the seal should be replaced
immediately. LONGER RUNNING WITHOUT
SEAL REPLACEMENT COULD DAMAGE
MOTOR. MOTOR MUST GO TO AUTHORIZED
SERVICE STATION FOR SEAL REPLACEMENT.
HEAT SENSOR (4WHV/ V4WHV/ 4WHR ONLY):
All single and three phase pumps have motor
heat sensors that are externally wired to the
control panel. Any motor temperature above the
sensor rating will open the heat sensor and stop
the motor. The sensor will automatically close
upon cooling. It is important that the heat sensor
wires and seal failure wires are connected at the
panel terminal block. Warranty is void if wires are
not connected or are jumped.
CAUTION: The single phase pumps with
automatic heat sensor reset will restart without
warning as the motor cools. Therefore, never do
service work on the pump unless power supply is
disconnected.
23833A661 11/21/13
3
WARNING: On three phase pumps only qualified
persons shall conduct services and installation
of this pump. The pump must be wired by a
qualified electrician, using an approved starter
box and switching device.
CAUTION: Never pull pump or work on control
box until incoming power is disconnected.
Never run motor until green ground conductor is
connected to a good outside ground. Never pull
electrical cable to lift pump.
If the control panel is not located near the pump,
consult wire gauge table for permissible wire
gauge to run between the control panel and the
junction box at the wet well.
CALIFORNIA PROPOSITION 65 WARNING:
This product and related
accessories contain chemicals known to the
State of California to cause cancer, birth
defects or other reproductive harm.
OIL FILLED MOTOR:
The motor chamber and seal chamber are
dielectric oil-filled for good heat transfer and
lubrication of bearings and seals. The motor
requires no other lubrication. Oil level in the
motor housing should be to the bottom of the oil
fill plug with the pump in a vertical position. Do
not overfill the motor housing since some space
is required for oil expansion. Oil level in the seal
chamber should be checked with the pump lying
horizontally with the fill plug at the top. The oil
level should be approximately 3/4" from the
outside surface of the housing. Transformer oil
should be used and may be purchased from your
Myers® dealer.
AIR VENTING:
Upon initial filling of the wet well with the water,
air may be trapped in the pump volute. To vent
off this air, a 5/32" diameter hole is located in the
volute. BE SURE THIS VENT HOLE IS CLEAN
AFTER ANY SERVICE WORK ON PUMP.
ELECTRICAL CONTROLS
(All Models)
FLOAT SWITCH INSTALLATION
1. Level Controls are held by support bracket and
cords are adjusted for proper depth.
a. Lower Turn-Off Control should be set so that
pump stops when water level is about at the top
of the volute.
b. First Turn-On Control is set to start pump when
level is at height specified above pump.
c. Second Turn-On Control of a duplex pump
system is set at height specified above first turn-
on control.
d. Alarm Control is set about 6" to 12" above the
highest Turn-On Control.
e. No control should be set above basin inlet invert.
MAKING ELECTRICAL CONNECTIONS
1. If control panel is mounted directly on basin top,
the power and control wires are taken directly to
control box and are sealed in the cord pallet with
cord grip connectors.
2. If panel is installed remote from basin, the cords
can be taken through a conduit to control panel,
or junction box can be used in the basin to make
connections. The Myers junction box has a built-in
sealing connector to seal the outgoing wires. If
other than Myers junction box is used, a separate
sealing connector must be used where wires leave
the basin.
CAUTION: If cords are taken directly through a
conduit to control box, a seal fitting must be used at
inlet of conduit to prevent gas vapors from getting
to control box. This type of installation is generally
not recommended because the sealing cement
must be broken to remove a cord.
MOTOR ELECTRICAL CONNECTIONS
Single phase motors are for 230 volts only. A special
control panel with start and run capacitors and start
relay are required for these pumps.
These control panels must be obtained from Myers
(or must be approved by Myers) or warranty on motor
is void. Also, warranty is void if the heat sensor and
seal fixture wires are not connected properly to control
box terminal strip.
CAUTION: Pump motor is not to be taken apart in
the field. Motors under warranty must be serviced by
Myers authorized repair station or be sent to factory.
23833A661 11/21/13 4
REGAL MOTOR END PARTS LIST
Ref. Description Qty. Part Number
1
35' CORD ASSEMBLY 14-4 1 22569B104
35' CORD ASSEMBLY 10-4 1 22569B031
35' CORD ASSEMBLY 8-4 SOOW 1 22569B032
35' CORD ASSEMBLY 8-4 W 1 22569B102
2 SCREW; MACH ST 10-24UNC x 3/8 LG 3 05434A043
3 WASHER; LOCK SHKPRF INTERNAL ST NO 10 1 06107A015
4 PLATE; SEALING, UPPER WGL SERIES 1 24321A000
5 SCREW; CAP HEX ST SPEC #10-24UNC x 7/8 LG 1 24322A000
6 GROMMET; SEALING POWER WHV SERIES 1 24323A001
7 PLATE; SEALING LOWER WGL SERIES ST 1 24324A000
8 WIRE; ELECT 10 GA 1 STR RED 12 LG 1 22500A121
9 WIRE; ELECT 10 GA 1 STR WHITE 12 LG 1 22500A122
10 WIRE; ELECT 10 GA 1 STR BLACK 12 LG 1 22500A123
11 WASHER; SPRING FINGER 1.189 ID x 1.830 OD 2 19331A006
Ref. Description Qty. Part Number
12 BEARING, BALL, UPPER 1 08565A022
13 HOUSING; MOTOR 3WHV SEWAGE PUMP CI 1 24406D001
14 STATOR 1 SEE CHART
15 SHAFT W/ ROTOR 1 SEE CHART
16 BEARING, BALL, LOWER 1 066650181
17 GASKET; RUBBER TETRASEAL 7 x 6-3/4 x 1/8 1 05014A181
18 SEAL, SHAFT 1-1/4 1 049160001
19 HOUSING; SEAL CI 3HP 3WHV SEWAGE PUMP 1 24414D000
20 SCREW; CAP SKT HD SST 7/16-14UNC-3A x 1-1/2 LG 4 06106A035
21 PLUG; PIPE MALL GALV 1/2 SQ HD 1 05022A039
22 BOLT, EYE; ELECTRO GALV 3/8-16THD x 1 1 21929A002
23 GASKET; RUBBER TETRASEAL 3-3/4 x 3-1/2 x 1/8 1 05014A133
24 SCREW; CAP HEX SST 7/16-14UNC x 2 LG 4 19102A022
25 GASKET; VELLUMOID 10-3/8 x 8-7/16 x 1/32 1 05231A079
3WHV / V3WHV / 3WHR
IMPELLER AND VOLUTE PART NUMBERS
Pump RPM hp Trim Impeller Volute
3WHV/V3WHV10M4-21
1750 1 5 24415E030
3WHV – 22945D000
V3WHV – 22945E100
3WHV/V3WHV10M4-03
3WHV/V3WHV10M4-23
3WHV/V3WHV10M4-43
3WHV/V3WHV10M4-53
3WHV/V3WHV15M4-21
1750 1.5 5.5 22946C511
3WHV/V3WHV15M4-03
3WHV/V3WHV15M4-23
3WHV/V3WHV15M4-43
3WHV/V3WHV15M4-53
3WHV/V3WHV20M4-21
1750 2 6 22946C507
3WHV/V3WHV20M4-03
3WHV/V3WHV20M4-23
3WHV/V3WHV20M4-43
3WHV/V3WHV20M4-53
3WHV/V3WHV20M4-43
3WHV/V3WHV30M4-21
1750 3 6.5 22946C503
3WHV/V3WHV30M4-03
3WHV/V3WHV30M4-23
3WHV/V3WHV30M4-43
3WHV/V3WHV30M4-53
3WHV/V3WHV50M4-21
1750 5 6.75 22946C501
3WHV/V3WHV50M4-03
3WHV/V3WHV50M4-23
3WHV/V3WHV50M4-43
3WHV/V3WHV50M4-53
3WHR15M4-01
1750 1.5 5 0708120002
27706D000
3WHR15M4-21
3WHR15M4-03
3WHR15M4-23
3WHR15M4-43
3WHR15M4-53
3WHR20M4-01
1750 2 5.25 070812022
3WHR20M4-21
3WHR20M4-03
3WHR20M4-23
3WHR20M4-43
3WHR20M4-53
3WHR30M4-21
1750 3 6 070812012
3WHR30M4-03
3WHR30M4-23
3WHR30M4-43
3WHR30M4-53
3WHR50M4-21
1750 5 6.75 070812032
3WHR50M4-03
3WHR50M4-23
3WHR50M4-43
3WHR50M4-53
Pump Catalog No. Shaft w/Rotor Stator Only Housing w/Stator
3WHV10M4-21 24416C000 24407C211 24406D120K
V3WHV10M4-21
3WHV10M4-03 24416C001 24407C212 24406D125K
V3WHV10M4-03
3WHV10M4-23 24416C001 24407C213 24406D130K
V3WHV10M4-23
3WHV10M4-43 24416C001 24407C213 24406D135K
V3WHV10M4-43
3WHV10M4-53 24416C001 24407C214 24406D140K
V3WHV10M4-53
3WHV15M4-21 24416C000 24407C211 24406D120K
V3WHV15M4-21
3WHV15M4-03 24416C001 24407C212 24406D125K
V3WHV15M4-03
3WHV15M4-23 24416C001 24407C213 24406D130K
V3WHV15M4-23
3WHV15M4-43 24416C001 24407C213 24406D135K
V3WHV15M4-43
3WHV15M4-53 24416C001 24407C214 24406D140K
V3WHV15M4-53
3WHV20M4-21 24416C002 24407C215 24406D145K
V3WHV20M4-21
3WHV20M4-01 24416C002 24407C239 24406D195K
V3WHV20M4-01
3WHV20M4-03 24416C003 24407C216 24406D150K
V3WHV20M4-03
3WHV20M4-23 24416C003 24407C217 24406D155K
V3WHV20M4-23
3WHV20M4-43 24416C003 24407C217 24406D160K
V3WHV20M4-43
3WHV20M4-53 24416C003 24407C218 24406D165K
V3WHV20M4-53
3WHV30M4-21 24416C004 24407C219 24406D170K
V3WHV30M4-21
3WHV30M4-03 24416C004 24407C220 24406D175K
V3WHV30M4-03
3WHV30M4-23 24416C004 24407C221 24406D180K
V3WHV30M4-23
3WHV30M4-43 24416C004 24407C221 24406D185K
V3WHV30M4-43
3WHV30M4-53 24416C004 24407C222 24406D190K
V3WHV30M4-53
3WHV50M4-21 24416C004 24407C204 24406D170K
V3WHV50M4-21
3WHV50M4-03 24416C004 24407C220 24406D175K
V3WHV50M4-03
3WHV50M4-23 24416C004 24407C221 24406D180K
V3WHV50M4-23
3WHV50M4-43 24416C004 24407C221 24406D185K
V3WHV50M4-43
3WHV50M4-53 24416C004 24407C222 24406D190K
V3WHV50M4-53
23833A661 11/21/13
5
3WHV / V3WHV / 3WHR
20
18
16
19
17
13
14
15
8
9
10
7
6
4
5
1
21
23
22
2
3
11
12
24
25
WET END DRAWINGS
D
C
A
B
E
D
E
A
C
B
Ref. Description Qty. Part Number
A VOLUTE 1 See Table
B IMPELLER 1 See Table
C WASHER; RETAINER, W/PIN, FOR 4R & 3WHV SERIES 1 23609A001
D SCREW; CAP HEX SST 3/8-16 x 1 LG 1 19101A017
E KEY; SQ SST 1/4 x 1/4 x 11/16 1 05818A074
3WHV / V3WHV / 3WHR
3WHR
V3WHV VOLUTE
3WHV
23833A661 11/21/13 6
4WHV / V4WHV / 4WHR
IMPELLER AND VOLUTE PART NUMBERS
Pump RPM hp Trim Impeller Volute
4WHV/V4WHV30M4-21
1750 3 6 22711C518
4WHV – 22712D000
V4WHV – 22712E100
4WHV/V4WHV30M4-03
4WHV/V4WHV30M4-23
4WHV/V4WHV30M4-43
4WHV/V4WHV30M4-53
4WHV/V4WHV50M4-21
1750 5 7 22711C510
4WHV/V4WHV50M4-03
4WHV/V4WHV50M4-23
4WHV/V4WHV50M4-43
4WHV/V4WHV50M4-53
4WHV/V4WHV75M4-03
1750 7.5 7.5 22711C506
4WHV/V4WHV75M4-23
4WHV/V4WHV75M4-43
4WHV/V4WHV75M4-53
4WHV/V4WHV100M4-03
1750 10 8 22711C502
4WHV/V4WHV100M4-23
4WHV/V4WHV100M4-43
4WHV/V4WHV100M4-53
4WHR30M4-21
1750 3 6 070811122
22854D100
4WHR30M4-03
4WHR30M4-23
4WHR30M4-43
4WHR30M4-53
4WHR50M4-21
1750 5 6.5 070811112
4WHR50M4-03
4WHR50M4-23
4WHR50M4-43
4WHR50M4-53
4WHR75M4-03
1750 7.5 5.25 070811102
4WHR75M4-23
4WHR75M4-43
4WHR75M4-53
Pump Catalog No. Shaft w/Rotor Stator Only Housing w/Stator
4WHV/4WHR30M4-21 24408C000 24407C200 24406D020K
V4WHV30M4-21
4WHV/4WHR30M4-03 24408C000 24407C201 24406D025K
V4WHV30M4-03
4WHV/4WHR30M4-23 24408C000 24407C202 24406D031K
V4WHV30M4-23
4WHV/4WHR30M4-43 24408C000 24407C202 24406D035K
V4WHV30M4-43
4WHV/4WHR30M4-53 24408C000 24407C203 24406D040K
V4WHV30M4-53
4WHV/4WHR50M4-21 24408C000 24407C204 24406D045K
V4WHV50M4-21
4WHV/4WHR50M4-03 24408C000 24407C205 24406D050K
V4WHV50M4-03
4WHV/4WHR50M4-23 24408C000 24407C206 24406D055K
V4WHV50M4-23
4WHV/4WHR50M4-43 24408C000 24407C206 24406D060K
V4WHV50M4-43
4WHV/4WHR50M4-53 24408C000 24407C207 24406D065K
V4WHV50M4-53
4WHV/4WHR75M4-03 24408C000 24407C208 24406D070K
V4WHV75M4-03
4WHV/4WHR75M4-23 24408C000 24407C209 24406D075K
V4WHV75M4-23
4WHV/4WHR75M4-43 24408C000 24407C209 24406D080K
V4WHV75M4-43
4WHV/4WHR75M4-53 24408C000 24407C210 24406D085K
V4WHV75M4-53
4WHV/4WHR100M4-03 24408C000 24407C208 24406D070K
V4WHV100M4-03
4WHV/4WHR100M4-23 24408C000 24407C209 24406D075K
V4WHV100M4-23
4WHV/4WHR100M4-43 24408C000 24407C209 24406D080K
V4WHV100M4-43
4WHV/4WHR100M4-53 24408C000 24407C210 24406D085K
V4WHV100M4-53
REGAL MOTOR END PARTS LIST
Ref. Description Qty. Part Number
1
35' CORD ASSEMBLY 14-4 1 22569B104
35' CORD ASSEMBLY 10-4 1 22569B031
35' CORD ASSEMBLY 8-4 SOOW 1 22569B032
35' CORD ASSEMBLY 8-4 W 1 22569B102
2 SCREW; MACH ST 10-24UNC x 3/8 LG 6 05434A043
3 WASHER; LOCK SHKPRF INTERNAL ST NO 10 2 06107A015
4 PLATE; SEALING, UPPER WGL SERIES 2 24321A000
5 SCREW; CAP HEX ST SPEC #10-24UNC x 7/8 LG 2 24322A000
6 GASKET; RUBBER TETRASEAL 3-3/4 x 3-1/2 x 1/8 1 05014A133
7 GROMMET; SEALING POWER WHV SERIES 1 24323A001
8 PLATE; SEALING LOWER WGL SERIES ST 2 24324A000
9 WIRE; ELECT 10 GA 1 STR RED 12 LG 1 22500A121
10 WIRE; ELECT 10 GA 1 STR WHITE 12 LG 1 22500A122
11 WIRE; ELECT 10 GA 1 STR BLACK 12 LG 1 22500A123
12 WASHER; SPRING FINGER 1.189 ID x 1.830 OD 2 19331A006
13 BEARING, BALL, UPPER 1 08565A022
14 HOUSING; MOTOR 4WHV SEWAGE PUMP CI 1 24406D001
15 STATOR 1 SEE CHART
16 SHAFT W/ ROTOR 1 SEE CHART
Ref. Description Qty. Part Number
17 BEARING, BALL, LOWER 1 08565A027
18 GASKET; RUBBER TETRASEAL 7 x 6-3/4 x 1/8 1 05014A181
19 HOUSING; BEARING 4WHV SEWAGE PUMP CI 1 24411D000
20 SEAL, SHAFT 1-1/2 2 00920-001-1
21 RING; RET EXTERNAL SST 1-1/2 SHAFT 1 12558A018
22 HOUSING; LOWER SEAL 4WHV SEWAGE PUMP CI 1 24412D000
23 SCREW; CAP HEX SST 7/16 x 1-1/2 LG 4 19102A006
24 GASKET; VELLUMOID 10-3/8 x 8-7/16 x 1/32 1 05231A079
25 WIRE; ELECT 16 GA 1 STR BLACK 12 LG 1 22500A124
26 WIRE; ELECT 16 GA 1 STR WHITE 12 LG 1 22500A125
27 GROMMET; SEALING CONTROL 4WHV SERIES 1 24323A002
28 BOLT, EYE; ELECTRO GALV 3/8-16THD x 1 1 21929A002
29 SCREW; CAP HEX SST 7/16-14UNC x 2LG 4 19102A022
30 WIRE; ELECT 16 GA 1 STR YELLOW 20 LG 1 22500A126
31 FERRULE; RUBBER .312 OD .171 ID .265 LG ONE HOLE 1 12619A001
32 PLUG; SPECIAL 1/2 HEX BR ROD 1 21577A000
33 ELECTRODE; WIRE 4-1/2 LG 1 21792A003
34 SCREW; CAP SKT HD SST 3/8-16UNC-3A x 1 LG 4 06106A028
35 GASKET; RUBBER 7-1/2 x 7-1/4 x 1/8 THK 1 05014A176
23833A661 11/21/13
7
4WHV / V4WHV / 4WHR
GREEN
GREEN
22
35
34
33
32
31
30
29
27
3
2
25
26
1
13
14
15
16
20
21
23
24
28
17
19
18
12
9
10
11
7
8
4
5
6
WET END DRAWINGS
A
B
E
D
C
D
A
B
C
E
Ref. Description Qty. Part Number
A VOLUTE 1 See Table
B IMPELLER 1 See Table
C WASHER; RETAINER, W/PIN, FOR 4V & 4WHV SERIES 1 23609A002
D SCREW; CAP HEX SST 300 1/2-13UNC x 1-1/4 LG 1 19103A052
E KEY; SQ SST 1/4 x 1/4 x 13/16 1 05818A066
4WHV / V4WHV / 4WHR
4WHR
V4WHV VOLUTE
4WHV
23833A661 11/21/13 8
3WHV / V3WHV / 3WHR WIRING DIAGRAMS
8
8A
WHT.
BLK.
RED
GREEN
THW .
BLACK
RED
EULB
BLACK
RED
MOTOR STATOR
GROUND
SCREW
GROMMET
230 V – SINGLE PHASE
8
8A
WHT.
BLK.
RED
GREEN
THW .
BLACK
RED
1T
2T
3T
MOTOR STAT OR
GROUND
SCREW
GROMMET
200 OR 575 V – THREE PHASE
8
8B
WHT.
BLK.
RED
GREEN
THW .
BLACK
RED
1T
2T
3T
MOTOR STATOR
GROUND
SCREW
GROMMET
230 V – THREE PHASE
4T
5T
6T
7T
8T
9T
8
8
WHT.
BLK.
RED
GREEN
WHITE.
BLACK
RED
1T
2T
3T
MOTOR STATOR
GROUND
SCREW
GROMMET
460 V – THREE PHASE
4T
5T
6T
7T
8T
9T
8A
23833A661 11/21/13
9
Power
Cord
Control
Cord
Ground
Screw
Grommets
Motor Stator
Heat
Sensor
on Stator
Seal Leak
Electrode
230 V – SINGLE PHASE
10/416/
4
BLUE
BLACK
REDRED
BLACK
WHT.
WHT.
BLK.
RED
GREEN
GREEN
BLK.
WHT.
RED
BLACK
WHITE
YELLOW
PURPLE
BROWN
7
7A
54
40
40
54
Power
Cord
Control
Cord
Ground
Screw
Grommets
Motor Stator
Heat
Sensor
on Stator
Seal Leak
Electrode
200 OR 575 V – THREE PHASE
10/416/4
T1
T2
T3 RED
BLACK
WHT.
WHT.
BLK.
RED
GREEN
GREEN
BLK.
WHT.
RED
BLACK
WHITE
YELLOW
P1
P2
7
7A
54
40
40
54
Power
Cord
Control
Cord
Ground
Screw
Grommets
Motor Stator Heat
Sensor
on Stator
Seal Leak
Electrode
230 V – THREE PHASE
10/416/
4
T1
T2
T3
RED
BLACK
WHT.
WHT.
BLK.
RED
GREEN
GREEN
BLK.
WHT.
RED
BLACK
WHITE
YELLOW
P1
P2
7
7B
54
40
40
54
T4
T5
T6
T7
T8
T9
Power
Cord
Control
Cord
Ground
Screw
Grommets
Motor Stator
Heat
Sensor
on Stator
Seal Leak
Electrode
460 V – THREE PHASE
10/
416/4
T1
T2
T3
RED
BLACK
WHT.
WHT.
BLK.
RED
GREEN
GREEN
BLK.
WHT.
RED
BLACK
WHITE
YELLOW
P1
P2
7
7B 54
40
40
54
T4
T5
T6
T7
T8
T9
7
4WHV / V4WHV / 4WHR WIRING DIAGRAMS
23833A661 11/21/13 10
CAP SCREW TORQUE VALUE
3/8-16 20 ft.-lbs.
1/2-13 43 ft.-lbs.
5/8-11 93 ft-lbs.
3/4-10 128 ft.-lbs.
REMOVING PUMP CASE AND IMPELLER
In case of wear, damage due to dropping, plugged
pump, or replacing a defective motor, the pump volute
case and impeller can be removed in the field.
1. Remove bolts between seal housing flange and
volute case. The motor and impeller can now be
lifted off as a unit.
2. If necessary to remove impeller, lay pump on its
side. With a screwdriver bend the tabs of the
lockwasher away from the hex head bolt.
3. Loosen and remove the bolt by turning counter-
clockwise. Since Loctite® is used to secure the
bolt and is applied to the shaft/impeller interface,
heating of the shaft end to 450º F will usually
be required.
4. Impeller is mounted by a straight fit with driving
key. Pry evenly on opposite impeller sides with
two large screwdrivers or small bars behind
the impeller.
5. Set motor on end with shaft up after removing
impeller so that oil will not drain past the seal.
REPLACING IMPELLER AND PUMP CASE
1. Apply Loctite #680; before assembly, in keyway,
in the impeller bore (lower shaft O.D.), and on the
threads of the hex head cap screw.
2. Before placing the impeller on the shaft, be sure
the mechanical seal and its spring are in place.
3. Position retaining washer with long pin extension
in keyway.
4. Assemble hex head cap screw and tighten
securely.
Pump runs but does not pump
liquid from basin.
Red light comes on at
control box.
1. Pump impeller may be air locked; this occasionally occurs on
a new installation. Start and stop pump several times to purge
air. Be sure air vent hold in volute case is clean.
2. Run additional water into basin so that pump will be
submerged deeper to clear air.
3. If pump is three phase, rotation may be wrong. See
instructions for checking proper rotation.
4. If pump has been installed for some time and does not pump,
it may be clogged at inlet.
5. Discharge gate valve may be closed.
6. Discharge check valve may be clogged or have a broken
clapper or spring.
7. Discharge head may be too high. Check elevation.
8. If above checks do not locate trouble, motor rotor may be
loose on shaft which allows motor to run but will not turn
impeller or only at low RPM.
1. This indicates some water has leaked past the lower seal
and has entered the seal chamber and made contact with
the electrode probe. Pump must be removed immediately
from basin for replacement of lower seal. This preventive repair
will save an expensive motor.
TROUBLE CHECK LIST
Troubles listed generally pertain to the pump and auxiliary components. Other trouble can occur from
a faulty control box. These will be listed with the control box instructions.
CONDITION PROBABLE CAUSE
23833A661 11/21/13
11
TROUBLE CHECK LIST (Cont’d)
CONDITION PROBABLE CAUSE
Overload trips at control box
and alarm buzzer or flashing red
light comes on due to high water
level in basin.
Yellow run light stays on
continuously.
Circuit breaker trips.
Pump is noisy and pump rate
is low.
Grease and solids have
accumulated around pump
and will not pump out
of basin.
1. Push red reset button to reset overload. If overload
trips again after short run, pump has some damage and must
be removed from basin for checking.
2. Trouble may be from clogged impeller causing motor to
overload or could be from failed motor.
3. Trouble may be from faulty component in control box. Always
check control box before removing pump.
1. Indicates H-O-A switch may be in the Hand position.
2. Level control switch may have failed causing pump to
continue to operate when water is below lower control.
3. Impeller may be partially clogged causing pump to
operate at much reduced capacity.
4. Gate valve or check valve may be clogged causing low
pump flow.
5. Pump may be air logged. Lift arm on check valve to vent off
air. Also, check that the 5/32" vent hole in volute is open.
1. Reset breaker by pushing clear down on handle then back
to On position. If breaker trips again in few seconds, it
indicates excessive load probably caused by a short in the
motor or control box. Check out instructions given with
control box before pulling pump.
2. If this condition happens after an electrical storm, motor or
control box may be damaged by lightning.
3. Resistance reading of the motor with lead wires disconnected
from the control box can determine if trouble is in motor or
control box.
1. Impeller may be partially clogged with some foreign objects
causing noise and overload on the motor.
2. Impeller may be rubbing on wear ring due to bent shaft or
misalignment.
3. Pump may be operating too close to shut-off. Check head.
1. Lower control which may be set too high.
2. Run pump on manual operation for several minutes with small
amount of water running into basin to clean out solids and
grease. This allows pump to break suction and surge,
breaking up the solids. If level switch is set properly, this
condition generally will not occur.
3. Trash and grease may have accumulated around floats
causing pump to operate erratically.
STANDARD LIMITED WARRANTY
Myers® warrants its products against defects in material and workmanship for a period of 12 months from the date
of shipment from Myers or 18 months from the manufacturing date, whichever occurs first - provided that such
products are used in compliance with the requirements of the Myers catalog and technical manuals for use in
pumping raw sewage, municipal wastewater or similar, abrasive free non-corrosive liquids.
During the warranty period and subject to the conditions set forth, Myers, at its discretion, will repair or replace to
the original user, the parts which prove defective in materials and workmanship. Myers reserves the right to change
or improve its products or any portions thereof without being obligated to provide such a change or improvement
for prior sold and/or shipped units.
Start-up reports and electrical schematics may be required to support warranty claims. Submit at the time of start
up through the Myers website: http://forms.pentairliterature.com/startupform/startupform.asp?type=m.
Warranty is effective only if Myers authorized control panels are used. All seal fail and heat sensing devices must
be hooked up, functional and monitored or this warranty will be void. Myers will only cover the lower seal and labor
thereof for all dual seal pumps. Under no circumstance will Myers be responsible for the cost of field labor, travel
expenses, rented equipment, removal/reinstallation costs or freight expenses to and from the factory or an
authorized Myers service facility.
This limited warranty will not apply: (a) to defects or malfunctions resulting from failure to properly install, operate or
maintain the unit in accordance with the printed instructions provided; (b) to failures resulting from abuse, accident
or negligence; (c) to normal maintenance services and parts used in connection with such service; (d) to units which
are not installed in accordance with applicable local codes, ordinances and good trade practices; (e) if the unit is
moved from its original installation location; (f) if unit is used for purposes other than for what it is designed and
manufactured; (g) to any unit which has been repaired or altered by anyone other than Myers or an authorized
Myers service provider; (h) to any unit which has been repaired using non factory specified/OEM parts.
Warranty Exclusions: MYERS MAKES NO EXPRESS OR IMPLIED WARRANTIES WHICH EXTEND BEYOND
THE DESCRIPTION ON THE FACE HEREOF. MYERS SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR ANY PARTICULAR PURPOSE.
Liability Limitation: IN NO EVENT SHALL MYERS BE LIABLE OR RESPONSIBLE FOR CONSEQUENTIAL,
INCIDENTAL OR SPECIAL DAMAGES RESULTING FROM OR RELATED IN ANY MANNER TO ANY MYERS
PRODUCT OR PARTS THEREOF. PERSONAL INJURY AND/OR PROPERTY DAMAGE MAY RESULT FROM
IMPROPER INSTALLATION. MYERS DISCLAIMS ALL LIABILITY, INCLUDING LIABILITY UNDER THIS
WARRANTY, FOR IMPROPER INSTALLATION. MYERS RECOMMENDS INSTALLATION BY PROFESSIONALS.
Some states do not permit some or all of the above warranty limitations or the exclusion or limitation of incidental
or consequential damages and therefore such limitations may not apply to you. No warranties or representations at
any time made by any representatives of Myers shall vary or expand the provision hereof.
740 East 9th Street
Ashland, Ohio 44805-1969
419-289-1144
www.femyers.com
Warranty Rev 12/11
