Pentair MYERS SP25 Series Troubleshooting guide

NOTE! To the installer: Please make sure you provide this manual to the owner of the equipment or to the responsible
party who maintains the system.
SP25 SERIES
SUBMERSIBLE SUMP PUMP
INSTRUCTIONS, SERVICE MANUAL AND PARTS LIST
Part # 23833A138 | © 2012 Pentair Ltd. | 11/26/12
SP25A1
SP25V1

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23833A138
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.
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.
Your pump has been carefully packaged to prevent
damage during shipping. However, occasionally
damage does occur due to rough handling. Carefully
inspect the pump for cracks or other damage that
could cause it to fail.
This discharge is threaded for 1½” pipe.
NOTE: DO NOT OVERTIGHTEN DISCHARGE
PIPE INTO PUMP PLASTIC DISCHARGE FITTING.
The pump can be installed with ABS, PVC or
polyethylene plastic pipe or galvanized pipe. Proper
adapters are required to connect plastic pipe to
pump.
A CHECK VALVE MUST BE USED IN THE
DISCHARGE LINE FOR ALL INSTALLATIONS.
Always install check valve with arrow on the body
in the direction of ow. A shut-off valve should also
be used.
AIR LOCKING
A sump pump is considered to be air locked if water
traps air in the pump and it cannot get out, thus
preventing pump from operating.
AS A PRECAUTION, IT IS RECOMMENDED THAT
A 1/8” HOLE BE DRILLED IN THE DISCHARGE
PIPE BELOW THE CHECK VALVE. THIS CHECK
VALVE SHOULD BE 12” TO 18” ABOVE PUMP
DISCHARGE. DO NOT PUT CHECK VALVE
DIRECTLY INTO PUMP DISCHARGE OPENING.
INSTALLING AND STARTING PUMP
1. These pumps have an integral ball float or
vertical float switch for automatic operation.
2. Refer to Typical Installation Drawing for
recommended installation. Install check valve
with arrow in direction of flow and drill 1/8” hole
in discharge pipe between pump and check
valve as noted.
3. After installation is complete plug cord into a 115
volt GROUNDED RECEPTACLE.
4. Run water into sump basin. Pump should turn
on at 9” to 10” water level. Allow pump to go
through several ON-OFF cycles to assure
satisfactory operation.
5. BE SURE BALL FLOAT SWITCH FLOATS
FREELY IN SUMP BASIN WITHOUT
TOUCHING BASIN WALLS. ADJUST PUMP
POSITION IN SUMP IF NECESSARY.
6. If a shut-off valve is used in discharge line, be
sure valve is open.
7. If pump does not operate properly, see
Troubleshooting Checklist for remedy.
MAINTENANCE AND SERVICE
If pump does not operate properly, follow steps
shown on Troubleshooting chart. If trouble cannot
be located with these steps shown, call Myers
service dealer, or take pump to Myers authorized
service center.
CAUTION: FOR ANY WORK ON PUMP OR
SWITCH, ALWAYS UNPLUG POWER CORD. DO
NOT JUST TURN OFF CIRCUIT BREAKER OR
UNSCREW FUSE.
CLEANING FLOAT
If pump becomes inoperative because of
accumulation of trash on the oat, remove pump
from sump and clean oat.
1. Wipe all water and dirt from pump and float.
2. If tar or paint have been put in the basin, it may
be necessary to thoroughly clean the float.
Kerosene can be used to remove tar or paint.
3. Be sure float operates freely after cleaning.
CLEANING IMPELLER AND
VOLUTE CASE
1. Remove three screws that hold plastic base and
volute. Remove four screws which hold volute
to motor housing. CAUTION: Warranty is void
if impeller or motor cap is removed.
2. Remove volute and clean impeller and volute
passage. If tar or paint has entered pump it
may be necessary to clean with kerosene.
CAUTION: Do not use strong paint solvents.
3. Be sure impeller turns freely after cleaning.
4. Clean out holes in plastic volute and wash
thoroughly before replacing.

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23833A138
TYPICAL INSTALLATION DRAWING
SP25A1
1800 1650 1520 1380 1230 1080 920740 540240
SP25V1
Grounded Type 115V
Receptacle. Min.
Height Above Floor - 4’
Shut-Off Gate Valve
(optional)
1½” Discharge Piping can be
PVC or ABS plastic with proper
adapters, or can be galvanized
steel
Check Valve (21904A010)
with rubber sleeve connectors
for 1¼” and 1½” pipe
NOTE: Drill 1/8” dia. hole in
discharge pipe below check
valve to prevent air locking
Lifting Handle
Sump Pump
(SP25A1 shown)
Float Switch
Sump Basin 12” to 18”
dia. plastic, fiberglass
or concrete
Tu rn-On Level
Tu rn-Off Level
7” SP25A1
4½” SP25V1 9½” SP25A1
6” SP25V1
14” Min.
Bottom of
Inlet Pipe
10½” Min.
PERFORMANCE TABLE (GALLONS PER HOUR)
Total Head
in Feet 2 4 6 8 10 12 14 16 18 20
SP25A1
SP25V1 1800 1650 1520 1380 1230 1080 920 740 540 240

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23833A138
Ref. Part
No. Description Qty. No.
1 Cord, Power 1 21628B017
2 Control, Level SP25A1 (not shown) 1 25798A500
2 Control, Level SP25V1 (not shown) 1 26292B100
2A* Bracket, Vertical Switch 1 26291B015
3 Seal, Shaft 1 21607A001
4 Case, Volute 1 24432C050
5 Impeller 1 24433B060
Ref. Part
No. Description Qty. No.
6 Plate, Bottom 1 24432C003
7 Screw, Self Tapping, #10-24 3 05910A012
8 Clamp, Cable (not shown) 1 22071A001
9 Washer, Lock (not shown) 1 06107A024
10 Screw, Machine, #10-24 1 09822A006
11 Nut, Hex (not shown) 1 19109A085
*Used on SP25V1 only
PARTS LIST

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23833A138
PROBLEM CHECKING PROCEDUE
Pump hums or does not run 1. Line circuit breaker may be off, or fuse may be blown or loose.
2. Water level in sump may be too low. Add more water. Turn-on level is as
indicated in Installation Drawing.
3. Pump cord may not be making contact in receptacle.
4. Float may be stuck. It should operate freely in basin.
5. If all symptoms check OK, motor winding may be open.
Pump runs but does not deliver 1. Check valve may be installed backwards. Arrow on valve should point in
water direction of ow.
2. Discharge shut-off valve (if used) may be closed.
3. Pump may be air locked. Start and stop several times by plugging and
unplugging cord. Check for clogged vent hole in discharge.
4. Impeller or volute openings may be fully or partially clogged. Remove pump
and clean.
5. Inlet holes in pump base may be clogged. Remove pump and clean
the openings.
6. Pump head may be too high. Pump can’t deliver water over 18’ vertical.
Horizontal distance doesn’t affect pumping, except loss due to friction.
Pump runs and pumps out 1. Float is stuck in up position. Be sure oat operates freely in basin.
sump, but does not stop
Pump runs but delivers only 1. Pump may be air locked. Start and stop several times by plugging and
a small amount of water unplugging cord. Check for clogged vent hole in discharge.
2. Pump head may be too high. Pump can’t deliver water over 18 feet vertical.
Horizontal distance does not affect pumping, except loss due to friction.
3. Inlet holes in pump base may be clogged. Remove pump and clean
the openings.
4. Impeller or volute openings may be fully or partially clogged. Remove pump
and clean.
5. Pump impeller may be partially clogged with tar or paint, causing motor to run
slow and overload. Remove pump and clean.
Fuse blows or circuit breaker 1. Inlet holes in pump base may be clogged. Remove pump and clean
trips when pump starts the openings..
2. Pump impeller may be partially clogged with tar or paint, causing motor to run
slow and overload. Remove pump and clean.
3. Motor stator may be defective.
4. Fuse size or circuit breaker may be too small. Must be 15 amps.
5. Impeller or volute openings may be wholly or partially clogged. Remove pump
and clean.
Motor runs for a short time, 1. Inlet holes in pump base may be clogged. Remove pump and clean
then stops the openings.
2. Impeller or volute openings may be wholly or partially clogged. Remove pump
and clean.
3. Motor stator may be defective.
4. Pump impeller may be partially clogged with tar or paint, causing motor to run
slow and overload. Remove pump and clean.
SUMP PUMP TROUBLESHOOTING CHECKLIST

Warranty Rev. 12/13
STANDARD LIMITED WARRANTY
Pentair Myers® warrants its products against defects in material and workmanship for a period of 12 months from the
date of shipment from Pentair Myers or 18 months from the manufacturing date, whichever occurs first – provided
that such products are used in compliance with the requirements of the Pentair Myers catalog and technical manuals
for use in pumping raw sewage, municipal wastewater or similar, abrasive-free, noncorrosive liquids.
During the warranty period and subject to the conditions set forth, Pentair Myers, at its discretion, will repair or
replace to the original user, the parts that prove defective in materials and workmanship. Pentair 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 Pentair Myers website: http://forms.pentairliterature.com/startupform/startupform.asp?type=m.
Warranty is effective only if Pentair 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. Pentair Myers will cover only the lower
seal and labor thereof for all dual seal pumps. Under no circumstance will Pentair 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 Pentair 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 that
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 that has been repaired or altered by anyone other than Pentair Myers or an authorized
Pentair Myers service provider; (h) to any unit that has been repaired using non factory specified/OEM parts.
Warranty Exclusions: PENTAIR MYERS MAKES NO EXPRESS OR IMPLIED WARRANTIES THAT EXTEND BEYOND
THE DESCRIPTION ON THE FACE HEREOF. PENTAIR MYERS SPECIFICALLY DISCLAIMS THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR ANY PARTICULAR PURPOSE.
Liability Limitation: IN NO EVENT SHALL PENTAIR MYERS BE LIABLE OR RESPONSIBLE FOR CONSEQUENTIAL,
INCIDENTAL OR SPECIAL DAMAGES RESULTING FROM OR RELATED IN ANY MANNER TO ANY PENTAIR MYERS
PRODUCT OR PARTS THEREOF. PERSONAL INJURY AND/OR PROPERTY DAMAGE MAY RESULT FROM IMPROPER
INSTALLATION. PENTAIR MYERS DISCLAIMS ALL LIABILITY, INCLUDING LIABILITY UNDER THIS WARRANTY, FOR
IMPROPER INSTALLATION. PENTAIR 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 Pentair Myers shall vary or expand the provision hereof.
1101 MYERS PARKWAY 490 PINEBUSH ROAD, UNIT 4
ASHLAND, OHIO 44805 CAMBRIDGE, ONTARIO, CANADA N1T 0A5
PH: 855-274-8947 PH: 800-363-7867
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