Pentair MYERS MCSP3 Troubleshooting guide

MCSP3
THERMOPLASTIC BASE
MCSP3I
CAST IRON BASE
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.
MODELS MCSP3 and MCSP3I
1/3 HP PEDESTAL SUMP PUMPS
INSTALLATION AND SERVICE MANUAL WITH REPAIR PARTS LIST
Part # 23833A307 | © 2012 Pentair Pump Group, Inc. | 11/08/12

23833A307 11/08/12 2
CAUTION: TO REDUCE RISK OF ELECTRIC SHOCK,
INSTALL WITH MOTOR AND ALL ELECTRICAL
COMPONENTS ABOVE THE TOP GRADE LEVEL
OF THE SUMP. THIS PUMP IS NOT SUBMERSIBLE.
CONNECT ONLY TO A PROPERLY GROUNDED
GROUNDING-TYPE RECEPTACLE. READ ALL
INSTRUCTIONS BEFORE INSTALLING PUMP.
WARNING: THIS PUMP HAS NOT BEEN
INVESTIGATED FOR USE IN SWIMMING POOL
AREAS. FOR INDOOR USE ONLY.
1. Before installing or servicing your pump, BE
CERTAIN pump power source is disconnected.
2. CALL AN ELECTRICIAN WHEN IN DOUBT. All
wiring should be performed by a qualified electrician.
Pump should be connected to a separate 15 amp
circuit breaker or 15 amp fuse block. Plugging into
existing outlet may cause low voltage at motor,
causing blown fuses, tripping of motor overload, or
burned-out motor.
3. Pump is equipped with a grounding conductor
and a grounding-type attachment plug. Do NOT
connect pump to a power supply until permanently
grounded. For maximum safety, ground pump to
a circuit equipped with a ground fault interrupter
device.
4. Know the pump application, limitations, and
potential hazards. WARNING: DO NOT USE
TO PUMP FLAMMABLE OR EXPLOSIVE
FLUIDS SUCH AS GASOLINE, FUEL OIL,
KEROSENE, ETC. DO NOT USE IN EXPLOSIVE
ATMOSPHERES. This Myers pump was not
designed for and CANNOT be installed in
locations classified as hazardous in the National
Electric Code, ANSI/NFPA 70. PUMP SHOULD
BE USED ONLY WITH LIQUIDS COMPATIBLE
WITH PUMP COMPONENT MATERIALS. FAILURE
TO FOLLOW THIS WARNING CAN RESULT
IN PERSONAL INJURY AND/OR PROPERTY
DAMAGE.
WARNING: IF YOUR BASEMENT HAS WATER
OR MOISTURE ON THE FLOOR, DO NOT
WALK ON WET AREA UNTIL ALL POWER HAS
BEEN TURNED OFF. IF SHUT-OFF BOX IS IN
BASEMENT, CALL THE ELECTRIC COMPANY
TO SHUT OFF SERVICE TO THE HOUSE, OR
CALL YOUR LOCAL FIRE DEPARTMENT FOR
INSTRUCTIONS. THE PUMP MAY HAVE FAILED;
REMOVE PUMP AND REPAIR OR REPLACE.
FAILURE TO FOLLOW THIS WARNING CAN
RESULT IN FATAL ELECTRICAL SHOCK.
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.
PEDESTAL SUMP PUMP INSTALLATION
Be certain sump basin is clean and all power to
pump is shut off. If pump fails to operate properly
after installation, refer to troubleshooting checklist or
contact Myers.
General materials needed:
• One can PVC cement (read instructions carefully)
• One 1-1/4" male PVC adapter
• Rigid PVC pipe and couplings
• One CV-150 check valve used with PVC pipe
Tools needed for all pump installations:
• Pipe wrench
• Slot screwdriver
• 24-tooth hacksaw
• Knife or round file
INSTALLATION
1. Thread 1-1/4" male PVC adapter into pump
discharge opening. NOTE: DO NOT use thread
compound or overtighten adapter or discharge
pipe.
2. Cement desired length of 1-1/4" PVC pipe to
adapter. Clamp check valve CV-150 to open end of
PVC pipe with water flow arrow pointing away from
pump base.
3. Lower pump into basin. Clamp needed PVC
discharge pipe and fittings to open end of check
valve CV-150.
4. Plug in pump and fill sump basin with water. Pump
should turn on at 10" to 12" water level; adjust
stop washers accordingly. Perform several ON-OFF
cycles to assure satisfactory operation.
MAINTENANCE AND SERVICE
General Information: Neither the pump nor the pump
motor ever requires oiling. However, the pump should
be checked for proper operation every two weeks. Fill
the sump pit with water and watch operation of pump,
On and Off levels, etc. If there are any irregularities in
pump operation, power should be disconnected, pump
should be removed from pit, examined, and repaired by
a qualified service person or electrician.
Cleaning the Pump: A decrease in output or noise
generally means the pump inlet is clogged. Clean any
debris from the pump inlet slots. Also inspect and turn
the impeller to verify that debris has not jammed it.
Connect the power cord and test operation. If pumping
is still not satisfactory, check for blockage in the
discharge pipeline and inspect the check valve.

23833A307 11/08/12
3
PERFORMANCE TABLE (in gallons per minute)
PUMP
MODEL
VERTICAL PUMPING DISTANCE IN FEET
6 8 10 12 14 16 18
MCSP3 50 45 39 32 23 13 2
MCSP3I 47 42 37 30 23 13 2
SPECIFICATIONS
Power supply requirement .........................115V, 60 Hz
Horsepower............................................................. 1/3
Motor duty.................................................. Intermittent
Liquid temp. range ....................................32˚ to 100˚ F
Min. circuit requirement................................10.0 amps
Motor full load-maximum ...............................5.7 amps
Discharge ..................................................... 1-1/4" IPT
TROUBLESHOOTING CHECKLIST
CAUTION: SHUT OFF POWER TO PUMP
1. Motor overheats and automatic overload shuts it
off.
a. Pump inlet or discharge line clogged. Check inlet,
discharge line, and check valve.
b. Low line voltage or inadequate extension
cord. Check size of wiring – may be below
recommended minimum. If OK, contact electric
company.
c. Voltage too high; check wiring with voltmeter. If
voltage is too high, contact electric company.
d. Low head (vertical pumping distance). The shorter
the head, the greater the volume pumped, and the
harder the pump works. If head is only a foot or
two, pump may overload.
2. Pump runs but does not deliver water.
a. Pump inlet or discharge line clogged. Check inlet,
discharge line, and check valve.
b. Low line voltage or inadequate extension
cord. Check size of wiring – may be below
recommended minimum. If OK, contact electric
company.
c. Loose shaft. Reposition shaft to motor shaft or
impeller or replace parts as needed.
3. Pump runs and pumps out sump, but does not
stop.
a. Float is stuck in up position. Be sure float operates
freely in basin.
b. Faulty automatic switch. Replace with SW-26K.
c. Defective motor. Check for grounded winding and
replace motor if necessary.
4. Pump starts and stops too often.
a. Improper positioning of stop washers. Readjust
stop washers.
b. Faulty automatic switch. Replace with SW-26K.
Ref. No. Description Part No. Qty.
1 Automatic Switch SW-26K 1
2 Float Rod 24813A000 1
3 Rubber Stop Washer 05014A185 2
4 Bracket & Rod Guide 24814A000 1
5 Float 25603B000 1
6 Base, Top 26693D000 1
7 Screw, Set Tap 08978A007 6
8* Impeller (not shown) 26692B010 1
9 Base, Bottom 26693D010 1
10 Column 24812B000 1
11 Drive Shaft (not shown) 24803B000 1
12 Screw, Set 1/4-20 x 5/16 (not shown) 05013A046 1
13 Motor (1/3 HP, 115V, 1 PH) 18762B020 1
* If pump was manufactured before 6/99, order 24808C000 impeller.
REPLACEMENT PARTS FOR MCSP3
Ref. No. Description Part No. Qty.
1 Automatic Switch SW-26K 1
2 Float Rod 24813A000 1
3 Rubber Stop 05014A185 2
4 Bracket & Rod Guide 25605A000 1
6 Float 25603B000 1
7 Base, Top 25597D001 1
8 Gasket (not shown) 25592B000 1
9 Base, Bottom 25574A001 1
10 Screw 10-32 x 1/2" 05434A058 4
11 Impeller (not shown) 25602C000 1
12 Screw, Set 5/16-15 x 5/16 (not shown) 05013A015 2
13 Thrust Washer 25607A000 1
14 Column 25598B002 1
15 Drive Shaft (not shown) 25600B000 1
16 Coupling (not shown) 25601A000 1
17 Screw, Set 1/4-20 x 5/16 (not shown) 05013A041 3
18 Motor (1/3 HP, 115V, 1 PH) 18762B020 1
REPLACEMENT PARTS FOR MCSP3I

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
WWW.FEMYERS.COM WWW.FEMYERS.COM