MYERS WHR User guide

WHR/WHRH
and WHRE
WASTE HANDLING
SUMP PUMPS
Installation and Servicing Instructions
for Myers WHR/WHRH and WHRE
Submersible Sump Pumps
Single & Three Phase Power
Single & Double Seal
23833A201 (Rev. 6/09)
SINGLE SEAL PUMPS DOUBLE SEAL PUMPS

23833A201 2
TYPICAL SECTIONAL DRAWINGS
FOR WHR/WHRH AND WHRE
SINGLE AND DOUBLE SEAL WASTE HANDLING PUMPS
SINGLE SEAL
FIG. 1
WHR
WHRH
WHRE
DOUBLE SEAL
FIG. 2
WHR-DS WHR-SD L/D
WHRH-DS WHRH-DS L/D
WHRE-DS WHRE-DS L/D

GENERAL DESCRIPTION AND USES
The WHR and WHRH Series are solids handling
pumps that can be used to pump RAW SEWAGE
for COMMERCIAL and DOMESTIC use, but are
not intended to handle large rags, mop heads, or
strings. All pumps can be used for normal sump
duty where extra capacity is required.
The WHRE Series is for pumping sump water
and EFFLUENT from septic tanks only. DO NOT
USE FOR RAW SEWAGE.
RECESSED IMPELLERS
All of the pumps are of the recessed impeller
type that provides a clear volute passage for
solids as no solids pass through the impeller.
All of the pumps listed can be used to pump
septic tank EFFLUENT or GROUND sewage as
used in some pressure sewer systems.
DOUBLE SEAL PUMPS
All double seal models have two seals with an oil
chamber between the seals so that seal faces of
both lower and upper seals are oil lubricated for
longer life and greater protection against water
leaking into the motor windings. These double
seal units are made with and without a seal leak
probe. The leak probe in the oil seal chamber
detects any water leakage into the chamber and
turns on a red signal light in the control panel.
Pumps should be removed from sump and seals
replaced after seal light shows in the panel.
Control panels must be used for pumps having
the seal leak probe.
Double seal pumps without the seal leak probe,
should be pulled and seal leak checked in 12 to
18 months.
LEVEL CONTROLS
All pumps must use sealed level control switches
for automatic operation. MLC and MFLC controls
have sealed mercury* switches that are 1 H.P.
rated at 230 volts. ALC and AWS-1 controls have
sealed mechanical switches that are rated 2 H.P.
at 230 volts.
Simplex single phase pumps can be made
automatic by attaching MFLC or MLC controls
to pump. These switches have a fixed draw off
level of 8 to 10” and can be used up to 1 H.P. For
higher H.P. ratings two mercury* switch (or SMNO)
controls with a magnetic starter can be used.
The ALC and AWS-1 controls can be used for
simplex single phase pumps with ratings up to 2 H.P.
3 23833A201
Plug in cords can be used on all the single phase
pumps without seal leak detector. The cord
has a GROUND pin that plugs into a grounded
receptacle. The grounded receptacle cannot be
used in the wet sump or basin due to DANGER
of current leakage.
Sealed junction boxes must be used in wet sumps
or basins to make connections to motor cord. The
AWS-1 control also acts as a sealed junction box
for connecting power cord to pump cord.
SAFETY WARNING
All pumps single or three phase must have a
GROUND WIRE that is connected to a screw
in the metal pump housing. This wire goes to
the control box and is connected to a good
outside GROUND such as a metal water pipe or
GROUND STAKE driven at least 6 feet into the
ground.
MOTOR TYPES
All single phase pump motors are of the
permanent split capacitor type that do not
require a start switch or start relay.
Automatic reset overload switches are attached
directly to the motor windings.
Three phase pump motors require a magnetic
starter with 3 leg overload protection.
INSTALLATION
Pumps can be installed inside sealed basin
with proper venting for either simplex or duplex
systems. SIMPLEX or DUPLEX basin systems
are available. See Figs. 3 and 4.
It is not recommended that basins be used for
RAW SEWAGE inside the home, but are for use
in office buildings and small industrial buildings
and factories.
*This product contains mercury and must be disposed of according to local
and federal codes.

PUMP CORD PLUGS INTO
SERIES SWITCH CORD FOR
AUTOMATIC OPERATION
3” VENT PIPE
GATE VALVE
DISCHARGE PIPE
MYERS FREE FLOW
CHECK VALVE
MLC or MFLC
LEVEL CONTROL
WITH SERIES PLUG
“O” RING SEAL INLET
FLANGE FOR 41/2” O.D.
PLASTIC PIPE
FIBERGLASS BASIN
WHR – WHRH – WHRE
SEWAGE PUMP 1/2-3/4-1-2 HP
SINGLE PHASE
SPLIT RUBBER
SEAL BUSHING
PUMP CORD
35”
PUMP 2
PUMP 1 3”– 45º TEE
10”
SEPARATE 2” DISCHARGE
PIPE CAN BE RUN FROM
EACH PUMP IF DESIRED
LEVEL CONTROL
CORD
OPTIONAL ALARM
CORD STEEL BASIN COVER EPOXY
COATED. SEALED TO BASIN
WITH CAULKING COMPOUND
CAST IRON PUMP COVER
SEALS WITH RUBBER GASKET
NEMA 1 DUPLEX
CONTROL BOX
3” VENT PIPE
2” GATE VALVE
3” DISCHARGE
PIPE
10”
36”
CV-200 CHECK VALVE
OVERRIDE CONTROL
START CONTROL
WASTE HANDLING PUMPS
STOP CONTROL
2” PUMP PIPING,
CAN BE 3” IF
REQUIRED
11/2” CONDUIT
BUSHING
11/2” CONDUIT
“O” RING SEAL INLET
FLANGE FOR 41/2” O.D.
PLASTIC PIPE
OPTIONAL ALARM
CONTROL
30” DIA. x 36” DEEP
FIBERGLASS BASIN
NOT MORE THAN 14”
HEIGHT
TO SUIT
SIMPLEX SYSTEM WITH
ALC LEVEL CONTROLS.
FIG. 3
23833A201 4
DUPLEX SYSTEM WITH
FLOAT CONTROLS AND
REMOTE CONTROL BOX.
FIG. 4

5 23833A201
Basins can be used inside the home where extra
capacity sump pumps are required for water
softeners and wash water.
If raw sewage must be pumped in the home use
outside basins that connect with pressure sewer
mains or gravity sewers, or run to septic tanks.
If an inside basin is used it is usually installed at
time of pouring the concrete floor.
Pumps can be installed in a compartment of septic
tanks for pumping to pressure sewer mains, gravity
sewers, leach fields, or evaporation mounds. See
Figs. 5, 6 and 7.
PROPER VENTING FOR BASINS
INSTALLED INSIDE
All inside sealed basins must have a 2” or 3” vent
pipe installed in accordance with local codes.
Sumps for handling softener water, wash or
drainage water do not have to be sealed or vented.
Outside basins are usually of fiberglass and from
4 to 8 feet deep and have a sealed cover. Pump
is usually installed with a lift out rail system so
that pump can be removed without disturbing the
discharge piping. The check valve comes out with
pump for servicing. Complete LIFT OUT SYSTEMS
mounted in fiberglass basins are available to meet
customer’s specifications.
WARNING: Sump basin must be vented in accord-
ance with local plumbing codes. These pumps
are not designed for and CANNOT be installed in
locations classified as hazardous in accordance
with the National Electric Code ANSI/NFPA 70.
PIPING
Pumps are fitted with 2” or 3” female threaded
pipe flange. Galvanized or PVC plastic pipe can be
used. Plastic pipe is preferred for raw sewage or
septic tank effluent.
CHECK VALVES AND SHUT-OFF VALVES
All pumps must have check valves and shut-off
valves in the discharge line. Check valves must be
flapper type with outside spring or ball type. Shut-
off valves can be ball or gate type. Plastic construc-
tion for both check and shut-off valves is preferred.
STARTING SIMPLEX SYSTEMS
1. For single phase pumps with MLC or MFLC
control, plug cords piggy back into receptacle
and run water into sump until pump starts. Allow
pump to make several on/off cycles. Leave
power cord plugged in. If pump runs but does
not pump it may be air locked. Unplug cord and
crack union in the discharge line then restart
pump, this should vent off any trapped air.
Re-tighten union.
2. With 2 float controls turn on power at the control
box and run water into sump. When level gets
above top control pump should start and
continue to pump until level drops to lower
control stopping pump. Run pump through
several cycles. If pump runs but does not pump,
check air lock as in 1. Leave power on for
automatic operation.
3. Where ALCL or AWS-1 controls are used plug
in cord or turn on power and run water into
sump, when level is about half way up on upper
weight pump should start and run until level
drops until about half the lower weight is above
water, stopping pump. Check 1, if pump does
not operate properly. For all cases if motor does
not start when water level is up check for proper
plug in or that start switch is on, or if fuse is
blown. ALWAYS HAVE ELECTRICTIAN MAKE
ELECTRICAL CHECKS.
STARTING PUMP “WHE-P” (AUTOMATIC)
USING MECHANICAL SWITCH WITH
SERIES PLUG-SIMPLEX SYSTEM
1. These pumps have a mechanical (mercury-free)
float switch with a 20 ft. cord and 115 volt or 230
volt series piggy-back plug on ½ H.P. with switch
mounted to the pump. On ¾ H.P. and 1 H.P., it
requires 20 ft. cord and 230 volt only.
2. Plug the switch cord plug into a proper voltage
properly grounded outlet.
3. Plug the pump power cord into the back of the
switch cord series plug.
4. Tape the cords to the discharge pipe every 12”.
5. Run water into sump until pump starts. Be sure
discharge line valve is open.
6. Allow pump to operate through several on/off
cycles.
7. If pump does not operate properly, see trouble
shooting service chart for remedy.
AIR LOCKING
A sump pump is said to be air locked if water traps in the pump and
it cannot get out, thus preventing pump from operating.
ALL MYERS SUMP PUMPS HAVE A SMALL AIR VENT HOLE IN
THE IMPELLER CHAMBER TO LET OUT TRAPPED AIR. IF THIS
HOLE BECOMES PLUGGED, PUMP MAY AIR LOCK. THIS
USUALLY HAPPENS ON PUMPS THAT ARE USED MAINLY IN THE
SEASONS. IN SUMMER MONTHS, THE PUMP MAY BE TURNED
OFF AS SUMP WATER DRIED UP. WHEN PUMP IS TURNED ON
AGAIN AND WATER COMES UP IN SUMP, THE AIR WILL TRAP IN
PUMP IF NOT VENTED.
AS A SECONDARY PRECAUTION IN INSTALLATIONS OF THIS
TYPE – 1/8” HOLE SHOULD BE DRILLED IN THE DISCHARGE PIPE
BELOW THE CHECK VALVE. THE CHECK VALVE SHOULD BE 12
TO 18 INCHES ABOVE PUMP DISCHARGE. DO NOT PUT CHECK
VALVE DIRECTLY INTO PUMP DISCHARGE OPENING.
In normal sumps where the pump is operating daily, air locking
rarely occurs.

23833A201 6
HOW TO SET CONTROLS AND START
DUPLEX SYSTEMS
CONTROL BOX MUST BE USED ON ALL
DUPLEX SYSTEMS
1. 4 float controls are used for duplex systems.
Set turn-on control 6” to 8” above pumps. Set
turn-off control 8” to 10” above bottom of
sump. Set override control 6” to 8” above turn-
on control. Set high level alarm control about 6”
to 8” above override control. Mark all control
cords so that they can be connected correctly in
the control box. See Fig. 4.
2. Turn Hand-Off-Auto switches to OFF position
and close circuit breaker.
3. Turn H-O-A switches to the AUTO position and
run water into sump. When level floats up and
activates the turn-on switch one pump should
start and run, pump will continue to run until
lower control is exposed stopping pump.
4. Run water into sump again and when level
floats up turn-on control, opposite pump will
start and run until level drops exposing lower
control, stopping pump.
5. Run this test several times to be sure pumps
are alternating properly.
LEVEL CONTROL SYSTEMS AVAILABLE
1. Simplex single phase packaged automatic
system. This system has the MLC or MFLC
float switch attached directly to the
pump. This system has a fixed pump-off level
of 8” to 10” and is usually used for drainage
water and is good up to and including 1 H.P.
2. Simplex single phase pumps can use the ALC
or AWS-1 controls which are mounted separate
from the pump. These controls can be used up
to 2 H.P. motors. See Fig. 3
3. Simplex pumps can use two float controls
mounted separate from the pump. These
controls must be used with a control box and
magnetic contactor. These controls can be
spaced apart for any draw off level required and
can be used for 2 H.P. or larger motors.
4. Duplex pump systems must use only the
float controls with electrical control box.
These control boxes mounted remote from the
sump tank are generally of plastic construction
for best corrosion resistance. See Fig. 4.
MOTOR OVERLOAD PROTECTION
All single phase motors have built-in automatic
reset overload switches fastened directly to the
motor windings.
All 3 phase motors must be installed with magnetic
starters having 3 leg overload protection.
HOW TO SET CONTROLS AND START
SIMPLEX SYSTEMS
1. Automatic systems – These systems have the
MLC, MFLC, or ALC switches mounted on the
pump, so pump is installed in the sump and
motor cord is plugged into GROUNDED
receptacle. For sealed sump cover, power cord
is brought through a split rubber plug in the
sump cover.
2. Where 2 float controls are used the turn on
control is set 3” to 6” above top of motor,
and the turn-off control is set about 6” to *’
above bottom of sump. If a high level alarm
control is used it is set about 6” above upper
control. If sump depth will not allow these
settings closer spacing can be used.
3. Where ALLC or AWS-1 controls are used the
DISPLACEMENT WEIGHTS are set so that turn-
on weight is 4” to 6” above top of motor and
lower weight is set about 6” above sump bottom.
4. Repeat this operation with one pump off which
will duplicate a failed pump condition. When
the level reaches the override control the pump
that is turned on should start and run and
pump down sump level.
5. To check high level alarm, again turn both
switches to OFF and fill sump until level is above
the alarm control. Turn switches to Auto position
and ALARM BUZZER should sound and alarm
light should come on. When level drops below
the alarm control buzzer should stop.
6. If pumps operate as described then set both
H-O-A to Auto and pumps are ready to operate
automatically.
7. If pumps do not operate properly then check as
described for simplex systems. See page. 13.
CAUTION – NEVER WORK ON PUMPS OR
CONTROL BOXES UNTIL CIRCUIT BREAKERS
ARE TURNED OFF.
Always have a qualified ELECTRICIAN make
electrical connections and service checks.

POWER CORD
POTTING
RESIN
CAPACITOR
STATOR
BROWN
BROWN
BLACK
BLACK
WHITE
WHT. OR YELL
GRN.
115 VOLT OR
200 or 230 VOLT - 1 PHASE
SINGLE VOLTAGE P.S.C. MOTOR
POWER CORD
POTTING
RESIN
CAPACITOR
STATOR
BROWN
BROWN
BLACK
WHITE
WHT. OR YELL
GRN.
115 VOLT OR
200 or 230 VOLT - 1 PHASE
SINGLE VOLTAGE P.S.C. MOTOR
BLACK
RED RED
SEAL
LEAK
ELECTRODE
7 23833A201
SPECIAL INSTRUCTIONS FOR
THREE PHASE PUMPS
1. WARNING! Only qualified persons shall
conduct services and installations of this
pump. The pump must be wired by a
qualified electrician, using an approved
starter box and switching device.
CAUTION! Risk of electric shock. Do not
connect conduit to pump
2. Three phase pumps are always installed with
control boxes having magnetic starters with
3 leg overload protection. DO NOT
TRY TO RUN THREE PHASE PUMPS
DIRECTLY ACROSS THE LINE.
3. To Connect Pump: Run wire from pump to the
bottom of control box or appropriate junction
box suitable for enclosing splice connections.
A hole must be cut into the control box for the
wires. With power to control box off, connect
green (ground) line to ground lug. Connect
black (power) wires to power lead terminals.
Make sure that all wires are inside control box
and not in a position to be pinched or shorted
when the door is closed. See wiring diagrams,
page 8.
4. All three phase motors can run either direction,
ROTATION can be changed by interchanging
any two line leads at magnetic starter. BE
SURE CIRCUIT BREAKER IS OFF BEFORE
MAKING THIS CHANGE.
To find if rotation is correct operate pumps
and check delivery operation. If flow and head
is low (refer to pump curves shown in this
manual) the rotation is wrong. With duplex
pumps check operation of both pumps.
All pump impellers either single or three phase
must turn counterclockwise when looking
into pump inlet. If uncertain of rotation, TURN
OFF POWER and lift pump from basin with
cord connected and lay pump on side so
impeller can be seen. Turn on power and start
pump using hand position of H-O-A switch.
Turn on and off fast so that coast of impeller
can be seen.
NEVER PUT HAND OR FINGERS
ON THE IMPELLER.
Interchange any two line
leads at the magnetic starter to change rotation.
WIRING DIAGRAMS SINGLE PHASE MOTORS
SINGLE PHASE PUMPS
WARNING – Risk of electric shock. This pump
is supplied with a grounding conductor and
grounding-type attachment plug. To reduce
the risk of electric shock, be certain that it
is connected only to a properly grounded,
grounding-type receptacle.
SINGLE SEAL PUMPS AND DOUBLE SEAL
PUMPS WITHOUT SEAL LEAK PROBE
DOUBLE SEAL PUMPS WITH
SEAL LEAK PROBE
(RED CONDUCTOR IN POWER CORD
IS FOR SEAL LEAK PROBE)

POWER
CORD
POTTING
RESIN
SPLICES
CONNECTORS
GROUND
SCREW
MOTOR STATOR
200 or 575 VOLT - 3 PHASE
BB
B
B
B
B
GREEN
POWER
CORD
POTTING
RESIN
SPLICES
CONNECTORS
GROUND
SCREW
MOTOR STATOR
230 VOLT - 3 PHASE
GREEN
T3
B
B
B
T4
T5
T6
T7
T8
T2
T9
T1
POWER
CORD
POTTING
RESIN
SPLICES
CONNECTORS
GROUND
SCREW
MOTOR STATOR
460 VOLT - 3 PHASE
GREEN
T3 B
B
B
T4
T5
T6
T7
T8
T2
T9
T1
WIRING DIAGRAMS FOR 3 PHASE MOTORS
FOR SINGLE SEAL PUMPS AND DOUBLE SEAL PUMPS
WITHOUT SEAL LEAK PROBE
23833A201 8

CAPACITY LITERS PER MINUTE
0 50 100 150 200 250 300 350
CAPACITY GALLONS PER MINUTE
TOTAL HEAD IN FEET
TOTAL HEAD IN METERS
0 20 40 60 80 100
110
100
90
80
70
60
50
40
30
20
10
36
32
28
24
20
16
12
8
4
0
PERFORMANCE CURVE
WHRE SERIES EFFLUENT PUMPS
W
H
R
E
2
0
2
-
H
O
R
S
E
P
O
W
E
R
W
H
R
E
1
0
1
-
H
O
R
S
E
P
O
W
E
R
W
H
R
E
5
1
/
2
H
O
R
S
E
P
O
W
E
R
CAPACITY LITERS PER MINUTE
0 100 200 300 400 500
CAPACITY GALLONS PER MINUTE
TOTAL HEAD IN FEET
TOTAL HEAD IN METERS
0 20 40 60 80 100 120 140
80
70
60
50
40
30
20
10
24
22
20
18
16
14
12
10
8
6
4
2
0
PERFORMANCE CURVE
WHRH SERIES WASTE HANDLING PUMPS
WHRH5 1/2 HORSEPOWER
WHRH10 1 HORSEPOWER
WHRH20 2 HORSEPOWER
CAPACITY LITERS PER MINUTE
0 100 200 300 400 500 600 700
CAPACITY GALLONS PER MINUTE
TOTAL HEAD IN FEET
TOTAL HEAD IN METERS
0 20 40 60 80 100 120 140 160 180 200
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
10
9
8
7
6
5
4
3
2
PERFORMANCE CURVE
WHR SERIES WASTE HANDLING PUMPS
WHR5 1/2 HORSEPOWER
WHR7 3/4 HORSEPOWER
WHR10 1 HORSEPOWER
9 23833A201
PERFORMANCE CURVES

ALARM AND POWER CORDS TO POWER SOURCE AWS-1 CONTROL
SEWER LINE FROM HOUSE
SCUM
SEPTIC TANK
CAPACITY REQUIRED BY LOCAL CODES
SLUDGE
MOUND TYPE SEEPAGE BED
AWS-1 CONTROL
STORAGE CAPACITY
IN CASE OF PUMP
OR POWER FAILURE
TURN ON LEVEL
TURN OFF LEVEL
EFFLUENT AND
PUMP TANK
SLUDGE
FLCW ALARM CONTROL
LIFT-OUT GUIDE RAIL
SEAL FITTING EFFLUENT PUMP
23833A201 10
FIG. 5
FIG. 5 PUMP IN SEPARATE TANK PUMPING TO SEEPAGE MOUND

ALARM CABLE
AWS-1 CONTROL MOUNTS ON BRACKET. ACCESSIBLE FOR SERVICE
POWER CABLE
AWS-1 CONNECTION BOX AND SEALED LEVEL CONTROL
24” DIA. FIBERGLASS BASIN
FLCW - HIGH WATER ALARM CONTROL RAIL SYSTEM - PUMP CAN BE LIFTED OUT WITHOUT DISCONNECTING ANY PIPING
LEVEL CONTROL WEIGHTS
CHECK VALVE AND LIFT-OFFF SEAL FITTING SHUT-OFF VALVE DISCHARGE TO LEACH FIELD OR PRESSURE SEWER
4” CONNECTING PIPE EFFLUENT PUMP
AVAILABLE FOR HEADS OVER 100 FT.
BURIED CABLE TO POWER SUPPLY
VENT PIPE
STORAGE CAPACITY
IN CASE OF POWER OR PUMP FAILURE
SCUM
PUMP OFF CAPACITY
TURN-OFF LEVEL
TURN-ON LEVEL
4”
CLARIFIED EFFLUENT
SEPTIC TANK SIZE ACCORDING TO CODE REGULATIONS
SLUDGE
SLUDGE CLEAN OUT TILE
WASTE LINE FROM HOUSE
11 23833A201
FIG. 6 PUMP INSTALLED IN FIBERGLASS BASIN AT OUTLET OF SEPTIC TANK
USED WHEN PUMPING INTO PRESSURIZED SEWER MAIN OR LEACH FIELD
FIG. 6

ALARM
CABLE
AWS-1 CONTROL MOUNTS ON
BRACKET. ACCESSIBLE FOR SERVICE
POWER
CABLE
AWS-1 CONNECTION BOX
AND SEALED LEVEL CONTROL
24” DIA. FIBERGLASS BASIN
FLCW - HIGH WATER
ALARM CONTROL
RAIL SYSTEM - PUMP CAN
BE LIFTED OUT WITHOUT
DISCONNECTING ANY PIPING
LEVEL CONTROL WEIGHTS
CHECK VALVE AND LIFT
-OFFF SEAL FITTING
SHUT-OFF VALVE
DISCHARGE TO LEACH FIELD
OR PRESSURE SEWER
EFFLUENT PUMP
SUPPORTED BY RAIL SYSTEM
AVAILABLE FOR HEADS
OVER 100 FT.
BURIED CABLE TO POWER SUPPLY
STORAGE CAPACITY
IN CASE OF POWER OR PUMP FAILURE
SCUM
PUMP OFF CAPACITY
TURN-OFF LEVEL
TURN-ON LEVEL
4”
CLARIFIED EFFLUENT
SEPTIC TANK SIZE ACCORDING TO CODE REGULATIONS
SLUDGE
SLUDGE CLEAN OUT TILE
WASTE LINE
FROM HOUSE
23833A201 12
Fig. 7
FIG.7 PUMP AND CONTROLS INSTALLED DIRECTLY IN SEPTIC TANK
USED WHEN PUMPING INTO PRESSURIZED MAIN OR LEACH FIELD

13 23833A201
POINTS TO CHECK IF PUMP DOES NOT
RUN OR DOES NOT RUN PROPERLY
1. Pump does not run or start when water is up in
sump.
a. Check for blown fuse or tripped circuit breaker.
b.Check for defective level switch.
c. Where control panel is used be sure H-O-A
switch is in the Auto position. Turn switch to
the HAND position and if pump runs then
trouble is in the automatic electrical system.
Have an ELECTRICIAN make electrical checks.
d.Check for burned out motor. Occasionally
lightning can damage a motor even with
lightning protection.
e. Where plug-in cords are used be sure contract
blades are clean. DO NOT USE PLUG-IN
CORDS INSIDE A SUMP OR WET WELL.
2. Pump runs but does not deliver flow.
a. Check for air lock. Start and stop pump
several times if this does not help it may be
necessary to loosen a union in the discharge
line to relieve air lock.
b.Check valve may be installed backward.
Check flow arrow on valve body.
Check shut-off valve it may be closed.
c. Check vertical elevation, it may be higher than
pump can develop. (See pump curve.)
d.Pump inlet may be plugged with a rag or trash.
Remove pump to check.
e. If pump is three phase be sure pump rotation
is correct. (See instructions for checking
rotation.)
f. Level control ball or weight may be stuck
on side of basin. Trash may be stuck on ball
preventing it from floating up.
CAUTION: ALWAYS UN-PLUG CORD OR TURN
OFF CIRCUIT BREAKER BEFORE DOING ANY
WORK ON THE PUMP. If control panel is remote
from pump, disconnect lead wires to motor so that
someone cannot turn the circuit breaker back on.
If motor is three phase mark the leads so they can
be replaced in same order.
DISMANTLING PUMP FOR
REPLACEMENT OF PARTS
Clean pump thoroughly. Knock off all scale and
deposits. Use sandblast if possible. Submerge
complete unit in Clorox solution for one hour
before taking apart.
TO REPLACE CAPACITORS ONLY
The motors on all WHR, WHRH and WHRE series
single phase pumps are of the permanent split
capacitor type, so have no relays or starting
switch, and have only a starting capacitor that is in
the circuit for both starting and running conditions.
1. Remove oil fill plug in top of motor and pour out
oil. Fig. 8
2. Remove bolts from capacitor housing and bump
housing with plastic hammer to loosen. Fig. 9
3. Lift housing and disconnect motor leads and
capacitor wires. Fig. 10
4. Remove capacitor clamp and slide out capacitor.
Replace with new capacitor and re-connect.
Fig. 11
Wiring connections are given in these instructions.
5. Replace capacitor housing, be sure rubber seal
ring is in place. Fig. 12
6. Refill motor with Myers submersible motor oil,
DON’T OVER FILL WITH OIL. OIL LEVEL
SHOULD BE ONE INCH FROM TOP OF
CASTING. Fig. 13
7. Be sure pump turns free before plugging into
power. Turn pump on side and turn impeller,
using screwdriver in slotted shaft.
Plug pump into receptacle to test operation.
Pump must run quiet and free of vibration.
Fig. 8

23833A201 14
Fig. 9
Fig. 12Fig. 10
Fig. 11
TO REPLACE POWER CORD ONLY
1. Remove capacitor housing as described above.
Disconnect cord leads from motor and remove
ground screw.
2. Unscrew cord bushing and remove from hous-
ing. Fig. 14
3. Replace with new fitting and cord, be sure “O”
ring seal is in place. Fig. 14
4. Replace ground screw and re-connect motor
wires. Wiring diagram is given in these instruc-
tions.

15 23833A201
Fig. 13
5. Replace capacitor housing and refill motor with
Myers submersible oil. See Fig. 13 for oil level.
One inch from top of casting.
COMPLETELY DISMANTLE PUMP TO
REPLACE MOTOR STATOR AND SEAL
1. Pour oil from motor and remove capacitor
housing as described above.
2. Remove bolts from motor housing only. Do not
remove bolts that hold motor plate to volute
case. Fig. 15
3. Lift off motor housing, pry between ears to
loosen. Fig. 16
4. Remove case holding bolts and lift out rotating
unit. Pry between ears to loosen. Fig. 17
5. Hold rotor and unscrew impeller locking nut.
Turn counter-clockwise as thread is right hand.
Fig. 18.
6. Unscrew impeller, turn counter-clockwise to
loosen. Fig. 19
7. Pry off seal with screwdrivers. It is not important
if seal is damaged, as it must be replaced.
Replace both parts of seal, never one or the
other. Fig. 20.
8. Bump shaft on end with plastic hammer to push
ball bearing from lower motor plate. Fig. 21.
9. Clean seal cavity thoroughly before replacing
ceramic seal. Use grease on rubber cup of seat
and push into housing, use plastic rod to push
into place. Clean seal face to remove any speck
of dirt, and use light oil on face before installing
bellows part of seal. Fig. 22
10. If necessary to replace ball bearing, press
off in arbor press. Use strips of metal between
bearing and rotor to press off. Fig. 23. Always
press on inner race of bearing when replacing.
Fig. 14
Fig. 15

23833A201 16
11. If necessary to replace motor stator, use new
housing with stator pressed in.
Both housing and stator must be replaced as a
unit, as stator is pressed in at factory and is not
to be replaced in the field. Fig. 24
12.In reassembly, be sure rubber seal ring and
thrust washer are in place as shown. Fig. 25
Fig. 19
Fig. 17
Fig. 18
Fig. 16

17 23833A201
Fig. 21
Fig. 20
Fig. 23
Fig. 22

MOTOR HOUSING
SEAL CHAMBER
5/8TYPE 21 SEALS
SEAL LEAK PROBE WHERE USED
LOWER SEAL PLATE
23833A201 18
SPECIAL INSTRUCTIONS FOR REPLACING
SEALS IN DOUBLE SEAL PUMPS
1. Remove plugs in motor housing and in seal
housing and drain oil.
2. Remove bolts in lower plate only.
3. Lift off pump case.
4. Hold impeller and unscrew holding nut. Hold
shaft with screwdriver and unscrew impeller,
turn counterclockwise.
5. Pry off seal bellows and ceramic seat. Break
seats if necessary to get out as they must be
replaced with new parts.
6. NEVER USE OLD SEAL PARTS. USE ONLY
COMPLETELY NEW SEALS.
7. Remove snap ring with snap ring pliers.
8. Pry off upper seal bellows and ceramic seat.
9. If no water has entered motor housing (check
winding with ohmmeter or megger) wipe seal
chamber thoroughly and replace seals.
10.Replace oil in motor housing and seal chamber.
Use only MYERS submersible oil.
11.If water has been in motor then remove seal
chamber and lift out rotor unit and remove
motor stator. See single seal instructions for
replacing ball bearing and motor stator.
Fig. 24 Fig. 25
Fig. 26

113/4
41/459/16
41/4
81/2
17 /8
181/8
171/4
59/16
11/2”INLET
123/32
2” NPT Std. with
3” NPT Flange
Available
2” NPT Std. with
3” NPT Flange
Available
59/16
123/32
11/2”INLET
203/8
191/2
WHRH WHRH-DS
113/4
41/459/16
41/4
81/2
17 /8
171/2
165/8
59/32
11/2”INLET
21/8
2” NPT 2” NPT
59/32
21/8
11/2”INLET
193/4
187/8
WHRE WHRE-DS
12
41/453/4
41/4
81/2
15 /8
19
181
/8
61 /2
11/2”INLET
2
2” NPT 2” NPT
61 /2
2
11/2”INLET
211
/4
203/8
WHR WHR-DS
19 23833A201
PUMP DIMENSIONS