Pentair MYERS S33 User Manual
S33 Sump Pump
INSTRUCTIONS AND SERVICE MANUAL
VERTICAL
FLOAT SWITCH
S33V1 & S33V1C
AUTOMATIC
S33P1 & S33PC-1
(CONTROL WITH SERIES PLUG)
NOT SHOWN
AUTOMATIC
S33A1 & S33A1C
R
23833A587 Bag #18812A108
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23833A587 Bag #18812A108
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.
Pumps can be installed with ABS, PVC or polyethylene plastic pipe, or galvanized or copper pipe. Proper adapters are required to
connect plastic pipe to pump.
The discharge is threaded for 1-1/2 inch pipe. NOTE: DO NOT OVERTIGHTEN DISCHARGE PIPE INTO PUMP PLASTIC
DISCHARGE FITTING.
A CHECK VALVE MUST BE USED IN THE DISCHARGE LINE FOR ALL PUMPS. A shut-off valve should be used. Always install check
valve with arrow on body in direction of ow.
AIR LOCKING
A sump pump is said to be air locked if water traps air 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 wet seasons.
In summer months,the pump may be turned off as sump water dries up. When pump is turned on again and
water comes up in the sump, the air will trap in pump if not vented.
AS A SECONDARY PRECAUTION IN INSTALLATIONS OF THIS TYPE, EXAMPLE: TYPE “A” 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.
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23833A587 Bag #18812A108
PUMP
MODEL
TOTAL HEAD (vertical pumping distance) IN FEET
S33
PERFORMANCE TABLE (in gallons per minute)
63383010
29122714251623181720152212
22
2
IMPORTANT INSTRUCTIONS BEFORE INSTALLATION
Failure to follow these instructions may cause serious bodily injury and/or property damage.
Warranty void if product modied, drilled, painted,
or altered in any way; if used to pump hot water,
or to pump liquids other than water (such as but
not limited to chemicals, fertilizers, ammable
liquids, herbicides, mud, tar, cement, wood chips); or
otherwise abused.
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. This pump has not been investigated for use in
swimming pool areas. DO NOT WORK ON PUMP UNTIL POWER
IS UNPLUGGED. DO NOT cut off ground pin or use an adapter
tting. DO NOT use an extension cord. The pump power
cord should be connected to a separately fused, grounded
115 volt line with a capacity of 15 amps. NEVER touch the
pump when it is connected to electrical power.
1. Before installing or servicing your pump, BE CERTAIN
pump power source is disconnected.
2. Installation and electrical wiring must adhere to state
and local codes and must be complete before priming pump.
Check appropriate community agencies, or contact local
electrical and pump professionals.
3. CALL AN ELECTRICIAN WHEN IN DOUBT. Pump should be
connected to a separate 15 amp circuit breaker or 15 amp fuse
block. Plugging into existing outlets may cause low voltage
at motor, causing blown fuses, tripping of motor overload,
or burned out motor.
4. A permanent ground connection from pump to the
grounding bar at the service panel is mandatory. Myers sump
pumps come with a grounding conductor and a groundingtype attachment plug. Do not connect pump to a power
supply until permanently grounded. For maximum safety,
ground pump to a circuit equipped with a fault interrupter
device.
5. Voltage of power supply must match the voltage of the
pump. All Myers sump pumps are factory preset to
115V, 60Hz.
6. Before installing pump, clear sump basin of any water,
debris, or sediment.
WARNING: Sump basin must be vented in accordance
with local plumbing codes. Myers sump pumps are not
designed for and CANNOT be installed in locations
classied as hazardous in the National Electric Code,
ANSI/NFPA 70.
7. The sump basin should be between 14" and 18" in
diameter for the S33A1, S33P-1, S33A1C, S33PC-1, S33M1C
and 12"–18" for the S33V1, S33V1C, S33PV1 made of plastic,
berglass, or concrete.
8. The following may cause severe damage to pump and will
void warranty:
• Using the pump without a check valve.
• Using an extension cord.
• Cutting off the ground pin or using an adapter tting.
• Working on pump or switch while plugged in.
• Removing motor housing, unscrewing impeller, or
otherwise removing impeller seal.
• Running the pump continuously.
• Pumping chemicals or corrosive liquids.
• Pumping gasoline or other ammable liquids.
PIPING
Plastic PVC pipe is shown in the illustrations, but drain
hose, galvanized steel or copper pipe may be used if desired.
All piping must be clean and free of all foreign matter to
prevent clogging. Use thread compound on all threaded
joints unless specied otherwise.
9. Do not open pump housing to attempt repair–this will
cause a severe shock hazard.
10. Any nished basement or living area should be equipped
with a sump pump alarm to warn of a pump failure and
protect against water damage.
A CHECK VALVE MUST BE USED IN THE DISCHARGE LINE FOR ALL PUMPS. A shut-off valve should be used. Always install
check valve with arrow on body in direction of ow.
PUMP MOTOR
NEVER REMOVE MOTOR HOUSING OR UNSCREW PUMP IMPELLER. Warranty on pump is void if motor housing, impeller or seal have
been removed. Any repair on motor must be done by an authorized Myers service center.
23833A587 Bag #18812A108
11. Cycle the pump at least once per month when regular
use isn’t occurring.
12. Always use a properly installed check valve with this
sump pump.
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