MYERS S40HT Series Guide

S40HT SERIES
Submersible High Temperature
Sump & Effluent Pumps
Safety Instructions
Installation and Service Manual
Automatic and manual models. Single phase power only - 115 volt
23833A403

SAFETY WARNINGS
This manual contains important information for the safe
use of this product. Read this manual completely
before using this product and refer to it often for
continued safe product use.
Failure to heed these symbols and follow the instruc-
tions in this manual may result in severe bodily injury
or death, or substantial property damage.
DO NOT THROW AWAY OR LOSETHIS MANUAL.
Keep it in a safe place so that you may refer to it often.
DO NOTwear loose clothing that can become
entangled in the impeller or other moving parts.
This pump is designed to handle materials which
could cause illness or disease through direct
exposure. Wear adequate protective clothing when
working on the pump or piping.
CAUTION: Never enter pump chamber after
sewage or effluent has been in basin. Sewage
water can give off methane, hydrogen sulfide and
other gases which are highly poisonous.
DO NOTuse this product in applications where fluid
temperatures exceed 195°F (90°C).
This pump must not be used to pump flammable,
combustible or hazardous liquids.
ALWAYS use piping, fittings, cords, and controls,
whose temperature rating exceeds maximum fluid
temperature.
To reduce risk of electrical shock, pump must be
properly grounded. Follow all applicable state and
local codes and ordinances, as well as the most
recent National Electric Code (NEC-ANSI/NFPA
70).
ALWAYS disconnect the pump from power source
before handling or servicing.
Any wiring to be done on pumps should be done by
a qualified electrician.
NEVER operate a pump with a power cord that has
frayed or brittle insulation.
NEVER let cords or plug lay in water.
NEVER handle connected power cords with wet
hands.
WARNING: RISK OF ELECTRICAL SHOCK! Single
phase pumps are supplied with a grounding conductor
and grounding-type attachment plug on the power cord.
To reduce risk of electrical shock, be certain that it is
connected only to a properly grounded, grounding-type
receptacle. DO NOTcut off ground pin or use an
adapter fitting. DO NOTuse an extension cord with this
pump
Entire plug may be cut off if a control panel is used. All
duplex installations require a control box.
All pumps have a GROUND WIRE that is grounded
inside the metal motor housing. This wire goes to the
receptacle or control box which must be connected to
good outside GROUND such as a metal water pipe or
GROUND STAKE driven at least 8 feet into the ground.
PUMPS
Pumps build up heat and pressure during operation.
Allow time for pump to cool before handling or
servicing.
Only qualified personnel should install, operate or
repair pump.
Keep clear of suction and discharge openings. DO
NOT insert fingers in pump with power connected.
Make sure lifting handles are securely fastened
each time before lifting.
DO NOTlift pump by power cord.
DO NOTexceed manufacturers recommendation
for maximum performance, as this could cause the
motor to overheat.
ALWAYS secure the pump in its operating position
so it can not tip over, fall, or slide.
Keep hands and feet away from impeller when
power is connected.
DO NOTuse in swimming pools, decorative foun-
tains or any installation where human contact with
pumped fluid is common.
Do not operate pump without safety devices in
place.
IMPORTANT! F. E. Myers is not responsible for losses,
injury or death resulting from a failure to observe these
safety precautions, misuse or abuse of pumps or
equipment.
2

DESCRIPTION AND APPLICATION
S40HT series pumps are single seal units, available in
automatic and manual versions. These pumps are
designed for use in pumping high temperature liquids
that do not exceed 195°F (90°C). These pumps are
not designed for pumping potable water. These pumps
are not for use in swimming pools, decorative foun-
tains, or any installation where human contact with
pumped fluid is common or possible.
S40HT series pumps use a 4/10 HP shaded pole, 1550
RPM motor, and are available in 115 volt, single phase.
All pumps are supplied with a 20’ power cord. All
automatic pumps are supplied with a mechanical
(mercury-free) piggy-back float switch rated for high
temperature use. The S40HT series pumps are
designed to pass ¾” spherical solids. Pump impellers
are Class 20 cast iron vortex design. All pumps have
1½” NPT discharge.
AIR LOCKING
A pump is said to be air locked if water traps air in the
pump and it cannot get out, thus preventing the pump
from operating. S40HT series have 1/8” air vent hole in
the impeller chamber to let out trapped air. If this hole
becomes plugged, pump may air lock. As a secondary
precaution a 1/8” hole should be drilled in the discharge
pipe below the check valve. The check valve should be
12” to 18” above pump discharge. Do not put check
valve directly into pump discharge opening.
PACKAGING
Each pump is packaged separately in a carton marked
with a catalog number and Myers engineering number.
The pumps are carefully packaged to prevent damage
in shipping. However, occasionally damage may result
due to rough handling. Carefully go over pump and
check for damage that could cause pump to fail.
LEVEL CONTROLS
All S40HT-11P pumps are supplied with a 20 foot
mechanical (mercury-free), piggy-back float switch.
The piggy-back switch is tethered directly to pump.
The switch must float free from pump and basin wall.
Plug the switch cord plug into a properly grounded,
rated voltage receptacle. Plug the power cord into the
back of the switch cord and tape the cords to the
discharge pipe approximately every 12”. The power
receptacle must be located outside the wet sump or
basin due to the DANGER of current leakage.
MOTOR TYPE
The motors used in the S40HT series pumps are
pressed into the cast iron housings and surrounded by
dielectric oil for superior heat dissipation. All models
use a 4/10 HP shaded pole, 1550 RPM motor. All
models have Class F motor windings, are available in
115 volts with overload protection, and use a double
sleeve bearing design. These pumps have no starting
switches and do not require a control panel for
individual installations.
INSTALLATIONS
Basin or tanks must be vented in accordance with local
plumbing codes. These pumps are not designed for
and cannot be installed in locations classified as
hazardous in accordance with the National Electrical
Code ANSI/NFPA 70.
When installing S40HT series pumps in high tempera-
ture installations, ALL basins, tanks, piping, fittings,
additional floats and cables must have rating ex-
ceeding 195°F (90°C). Also pumps are not to be used
in environments where ambient temperatures exceed
195°F (90°C).
CAUTION: If pump is to be used for pumping sewage
effluent: never enter pump chamber after sewage or
effluent has been in basin. Sewage water can give off
methane, hydrogen sulfide and other gases which are
highly poisonous.
Myers recommends installing effluent pumps with a
quick removal systems. The quick removal system
may be a union or Cam-lok coupling if the pipe is within
reach from the surface, or a rail system type quick
disconnect on deeper installations.
The dosing tank or pumping chamber must be con-
structed of corrosion resistant materials and must be
capable of withstanding all anticipated internal and
external loads. It also must not allow infiltration or
exfiltration. The tank must have provisions for anti-
buoyancy. Access holes or covers must be adequate
size and be accessible from the surface to allow for
installation and maintenance of the system. Access
covers must be lockable or heavy enough to
prevent easy access by unauthorized personnel.
The pumping chamber holding capacity should be
selected to allow for emergency conditions.
The discharge pipe must be the same size as the
pump discharge, 1½” or larger. In order to insure
sufficient fluid velocity to prevent any residual solids
from collecting in the discharge pipe, it is recom-
mended that a minimum flow of 2’ per second be
maintained (12 GPM through 1½” pipe, 21 GPM
through 2” pipe and 46 GPM through 3” pipe). A full
flow (ball or gate) shut off valve must be installed to
prevent back flow of effluent if the pump must be
removed for service. A check valve must be installed
on pressure sewer systems to prevent backflow and to
reduce wear on the pump system.
A high water alarm must be installed on a separate
circuit from the pump circuit. The alarm should have
the ability to be tested for proper operation.
3

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
tank.
(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. If it does not
run, turn switch to the HAND position and if the
pump runs then the trouble is in the automatic
electrical system. Have 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 contact
blades are clean and making good contact. DO
NOT USE PLUG-IN CORDS INSIDE A SUMP
OR WETWELL.
(f) Level control ball or weight may be stuck on
side of basin. Be sure it floats freely.
(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 backwards.
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. Remove pump to
check.
CAUTION: ALWAYS UNPLUG POWER CORDS OR
TURN OFF ALL MAIN AND BRANCH CIRCUIT
BREAKERS BEFORE DOING ANYWORK ONTHE
PUMP. If control panel is remote from pump, discon-
nect lead wires to motor so that no one can turn the
circuit breaker back on.
BEFORE DISMANTLING PUMP FOR
REPLACEMENT OF PARTS
Allow pump to cool. Clean pump thoroughly. Knock off
all scale and deposits. If used in sewage effluent
submerge complete unit in Clorox solution for one hour
before taking apart.
CAUTION: FOR ANYWORK ON PUMP OR
SWITCH, ALWAYS UNPLUG POWER CORD. DO
NOT JUSTTURN OFF CIRCUIT BREAKER OR
UNSCREW FUSE.
USE ONLY REPAIR PARTS CALLED OUT IN PARTS
LIST SUPPLIED INTHESE INSTRUCTIONS. ALL
COMPONENTS MUST BE RATED FOR HIGH
TEMPERATURE APPLICATIONS.
TO REPLACE AUTOMATIC FLOAT
(1) Unplug the pump power cord from the back of the
piggy-back float plug.
(2) Unplug the piggy-back float plug from the power
receptacle.
(3) Remove the pump from the sump if access to the
tether point is inaccessible.
(4) Disconnect the switch from its tether point and
remove from the discharge piping.
(5) Re-tether the new cord to the pump or discharge
piping.
(6) Cable tie or tape the power and switch cords to the
discharge piping.
(7) Plug the switch into the power receptacle.
(8) Plug the power cord into the switch plug.
(9) Fill basin and test switch operation.
ALL PUMP REPAIRS SHOULD BE DONE AT AN
AUTHORIZED MYERS SERVICE CENTER.
SHAFT SEAL REPLACEMENT
(1) Remove the oil fill plug located on the top of the
motor housing and drain the oil in the housing.
Properly dispose of the used oil. Do not reuse old
oil since it may contain water from seal failure.
(2) Remove the three cap screws holding the volute
case onto the seal plate. Lift the motor assembly
up and out of the volute case.
(3) Lay the motor assembly on its side. Insert a
slotted screwdriver into the slot in the center of the
shaft. With a rubber mallet, carefully tap the
impeller in a counter rotating direction while holding
the shaft with the screwdriver.
(4) Remove the rotating portion (ceramic) of the seal
with fingers. Pry on stationary portion (carbon) with
a pair of slotted screwdrivers to remove from volute
casing. Discard the old seal assembly parts.
NEVER USE OLD SEAL PARTS, REBUILD PUMP
WITH ONLY NEW SEAL ASSEMBLY.
(5) Thoroughly clean the shaft and volute casing with a
clean cloth. If the drained oil showed signs of
water, then the motor should be air dried for several
days to remove any remaining moisture.
(6) Carefully remove the new seal assembly from the
package. Add a film of new oil to the rubber O.D.
on the stationary portion (carbon), and insert into
the seal cavity on the volute casing. Using a
pushing tool (a piece of PVC pipe works well), push
on the rubber portion of the stationary seal until it is
evenly seated into the seal cavity. With a clean
cloth, carefully wipe the seal face.
(7) Remove the rotating portion (ceramic) from the
package and carefully wipe with a clean cloth. Add
a film of new oil onto the motor shaft. Slide the
rotating portion over the shaft with the rubber
surface of the seal facing away from the stationary
seal face. Center the seal on the shaft.
4

POWER CORD REPLACEMENT
(1) Loosen the compression nut that retains the power
cord. Slide nut out of the motor housing.
(2) Pull the power cord from the motor housing by
hand. The cord may need to be wiggled back and
forth several times to loosen from the housing. Pull
the power cord out until the connecting wires are
fully exposed. Disconnect the motor power and
ground leads with a pair of pliers.
(3) Reconnect the motor power leads and ground to
the new power cord. The ground terminal on the
power cord has a male connector, and the power
terminals on the new power cord are female.
(4) Carefully push the connected wires into the motor
housing until the molded body of the power cord
seats. Make sure that the wires stay away from the
rotor and shaft. Slide the nut into place and hand
tighten. Tighten the nut with 1” wrench until snug,
but do not over tighten.
(5) Plug pump into grounded receptacle to test opera-
tion. Pump must run quiet, free of vibration,
without tripping out breaker.
MOTOR REPLACEMENT
(1) Disconnect the power cord and drain the oil as
noted in the previous sections. If the oil shows
signs of water or other contamination, it may be
necessary to replace the seal assembly as noted in
a previous section.
(2) Loosen and remove the three cap screws retaining
the motor housing. Lift the motor housing off of the
pump assembly.
(3) Remove the o-ring from the remaining pump
assembly. Clean surface area and place new o-ring
into position. Be careful not to cut o-ring when
installing.
(4) Position new motor housing (with new stator), onto
the pump assembly. Align the screw bosses, and
insert the three cap screws. Evenly tighten the cap
screws to 6.3 ft.-lb. torque.
(5) Reinstall the power cord as noted in the previous
section.
(6) Replace oil in the motor housing using only Myers
submersible transformer oil. The level should be ¾”
below the top of the motor housing. Check with dip
stick to assure that the pump is properly filled.
(7) Plug pump into grounded receptacle to test opera-
tion. Pump must run quiet, free of vibration, without
tripping out breaker.
(8) Place the impeller onto the shaft. Screw the
impeller clockwise onto the shaft using a screw-
driver to hold the shaft from turning and tighten
impeller. Check to see that the impeller spins freely
after tightening.
(9) Place the pump motor assembly upright and set it
into the volute case. Replace the three cap screws
and tighten to 6.3 ft.-lb. torque. Check that the
impeller turns freely.
(10) Replace oil in the motor housing using only Myers
submersible transformer oil. The level should be ¾”
below the top of the motor housing. Check with dip
stick to assure that the pump is properly filled.
(11) Plug pump into grounded receptacle to test opera-
tion. Pump must run quiet and free of vibration.
Winding Locked
Resistance Max. Rotor
HP Speed Volts Phase In OHMS Amps Amps
4/10 1550 115 1 1.2 12.0 16.0
5
Capacity - Gallons Per Minute
Capacity - Liters Per Minute
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
0
2
4
6
8
5 1015202530 354045505560
0 50 100 150 200
Performance
@ 195° F
Total Head in Feet
Total Head in Meters

Ref. No. Part
No. Description Req’d Numbers
1 Cord, Power (20 ft.) 1 21628B070
2Motor Housing with stator, 1 23770D080K
4/10 HP, 115V, 1 Ph, 60 Hz
2A Oil, Transformer 1 qt. 11009A008K
3 Stator, 4/10 HP, 115V 1 21599B028
4 Rotor w/Shaft 1 22821A000
5 Washer Thrust, SST 1 05030A243
6 Washer Thrust, graphite 1 05030A244
7 Plate, Seal 1 26227D000
8 Gasket, Rubber 1 05014A172
9 Seal, Shaft 1 21607A001
10 Impeller, Recessed 1 21663C012
11 Screw, Cap, ¼”-20 x 7/8lg. 6 19099A023
12 Case, Volute 1 26226D002
13 Clamp, Float 1 22071A003
13A Screw, Tapping 1 09822A006
15 Control, Level, 115V, 20 Ft. 1 21813B143
16 Plug, ¼” Pipe 1 05022A056
17 Ring, Lifting 1 26230A000
F. E. Myers, 1101 Myers Parkway, Ashland, Ohio 44805-1969
419/289-1144, FAX: [phone], www.femyers.com
Myers (Canada), 269 Trillium Drive, Kitchener, Ontario N2G 4W5
519/748-5470, FAX: [phone]
23833A403 9/06
S40HT Series Parts List
S40HT Series Dimensions
4”

MYERS
LIMITED WARRANTY
SUMP & RESIDENTIAL SEWAGE
During the time periods and subject to the conditions hereinafter set forth, F. E. Myers will repair or replace to
the original user or consumer any portion of your new MYERS product which proves defective due to
defective materials or workmanship of MYERS. Contact your nearest Authorized MYERS Dealer for war-
ranty service. At all times MYERS shall have and possess the sole right and option to determine whether to
repair or replace defective equipment, parts, or components. Damage due to lightning or conditions beyond
the control of MYERS is NOT COVERED BY THIS WARRANTY.
WARRANTY PERIOD
Pumps: 12 months from date of purchase or 18 months from date of manufacture.
Labor, etc. Costs: MYERS shall IN NO EVENT be responsible or liable for the cost of field labor or other
charges incurred by any customer in removing and/or reaffixing any MYERS product, part or component
thereof.
THIS WARRANTY WILL NOT APPLY: (a) to defects or malfunctions resulting from failure to properly install,
operate or maintain the unit in accordance with printed instructions provided; (b) to failures resulting from
abuse, accident or negligence; (c) to normal maintenance services and the 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; or (e) unit is used for purposes other than for what it was designed and manufactured, and (f)
if three phase submersible motors are installed on a single phase power supply using a phase converter or if
three phase power is supplied by only two transformers, making an open Delta system.
RETURN OR REPLACED COMPONENTS: any item to be replaced under this Warranty must be returned to
MYERS in Ashland, Ohio, or such other place as MYERS may designate, freight prepaid.
PRODUCT IMPROVEMENTS: 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 units sold and/or shipped prior to
such a change or improvement.
WARRANTY EXCLUSIONS: MYERS SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES OF MER-
CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AFTER THE TERMINATION OF THE WAR-
RANTY PERIOD SET FORTH HEREIN.
Some states do not permit some or all of the above warranty limitations 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.
LIABILITY LIMITATION: IN NO EVENT SHALL MYERS BE LIABLE OR RESPONSIBLE FOR CONSE-
QUENTIAL, 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 FOLLOWING THE
INSTRUCTIONS IN THE INSTALLATION MANUAL. WHEN IN DOUBT, CONSULT A PROFESSIONAL.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitation or exclusion may not apply to you.
This Warranty gives you specific legal rights and you may also have other rights which vary from state to state.
In the absence of suitable proof of this purchase date, the effective date of this warranty will be based upon the
date of manufacture.
DETERMINATION OF UNIT DATE OF MANUFACTURE: Submersible Sump pump (8-95) month and year
stamped on pump nameplate; column sump pump month and year on red warranty tag.
F. E. Myers, 1101 Myers Parkway, Ashland, Ohio 44805-1969
419/289-1144, Fax: [phone], www.femyers.com
23833A403 9/06Printed in U.S.A.