Pentair MYERS B12-3036 Manual

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.
SIMPLEX/DUPLEX GRINDER PUMP
INDOOR INSTALLATION
PACKAGED SYSTEM
INSTALLATION AND SERVICE MANUAL
Part # 13800A794 | © 2017 Pentair Pump Group, Inc. | 06/19/17
MODEL: B12-3036
(30" dia. x 36" Deep Basin)
MODEL: B12-3036D
(30" dia. x 36" Deep Basin)

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PACKAGE INCLUDES
1. Heavy fiberglass basin with steel sump cover
flanges (two removable cast iron pump covers/
flanges with duplex package). Sump cover has
3" NPT vent flange.
2. O-ring seal inlet flange for 4½" O.D. plastic pipe.
3. 1½" galvanized support pipe and conduit for
motor cords. (Two for duplex package.)
4. 1¼" galvanized discharge pipe, two pipes T.O.E.
(Two for duplex package.)
5. 1¼" slip coupling for discharge pipe. (Two for
duplex package.)
6. 3 float controls for mounting through cover.
(Four for duplex package.)
7. CV-125 angle check valve. (Two for
duplex package.)
CALIFORNIA PROPOSITION 65 WARNING:
AVERTISSEMENT!
This product and related
accessories contain chemicals known to the
State of California to cause cancer, birth
defects or other reproductive harm.
INSTALLATION INSTRUCTIONS
1. Remove pump cover from basin and take out all
parts. DO NOT REMOVE STEEL BASIN COVER.
2. Use template furnished with inlet flange and cut
hole in basin and drill for mounting bolts. Mount
inlet flange at height required for installation.
3. Basin is now ready to set in ground. Pour cement
around basin and up to basin flange to anchor basin
in the ground.
PREPARING PUMP FOR MOUNTING
IN BASIN
1. Screw one-half of 1¼" galvanized discharge pipe
into each pump. Use pipe dope or PTFE coating
tape on threads.
2. Pull two motor cords up through 1½" galvanized
support pipe and screw on to pump. Be sure pipe
coupling is on pipe.
3. Connect other half of 1¼" discharge pipe with 1¼"
slip coupling. Firmly tighten.
4. Place pump cover over pipes and tighten flange to
hold in place.
5. For simplex system: Plug extra hole with solid
rubber plug. Insert “OFF”, “ON” and “ALARM”
controls through rubber grommets. Adjust cords to
proper length. Insert floats through holes provided
in cover. Push rubber grommets into holes.
6. Place gasket on steel basin cover. Use permatex on
bottom side only to hold in place.
7. Lift pump and cover and lower into basin. Secure
with bolts.
8. Power cords are taken to control box for
connecting.
9. The motor cords can be installed in flexible
conduit if desired or can be left open and taped
together.
10.If pump is 3 phase, rotation should be checked
before pump is installed in basin. Lay pump on side
and connect to control box.
Turn hand-off-auto switch to “OFF” position,
then turn on circuit breaker. Quickly turn switch
to “HAND” then back to “OFF”. Note rotation of
grinder impeller. Impeller must rotate counter-
clockwise. If rotation is wrong interchange any two
motor leads at control box and re-check.
Anytime a new pump is installed, rotation
should be re-checked.
CAUTION – KEEP HANDS COMPLETELY
AWAY FROM GRINDER IMPELLER IN MAKING THIS
TEST.
STARTING PUMP
1. With circuit breaker at control box in
“OFF” position, turn hand-off-auto switch
to “AUTO” position (both breakers and both
switches for duplex system).
2. Turn circuit breaker to “ON” and run water into
basin (both breakers for duplex system).
3. When level tilts upper float, pump should start
and should run until lower float is deactivated,
causing pump to stop.
4. Repeat cycle several times. Yellow run light should
come on each time pump runs.
5. Turn hand-off-auto switch (both switches for
duplex system) to “OFF” and run water into basin
until alarm switch activates. Alarm will continue to
operate as long as the float control is in the
up position.
ALWAYS TURN THE ALARM SWITCH TO “ON”
POSITION AFTER TESTING.
6. Turn hand-off-auto switch to “AUTO” position and
pump is ready for automatic operation.
7. Replace blank sump cover for simplex system, or
solid rubber plugs in cover for duplex system, and
be sure discharge valve is wide open.

13800A794 06/19/17
3
TYPICAL INSTALLATION MODEL B12-3036 SIMPLEX GRINDER PUMP

13800A794 06/19/17 4
PIPING ASSEMBLY FOR SIMPLEX SYSTEM 30" x 36" BASIN

GAS TIGHT
SUMP COVER
DUPLEX
CONTROL BOX
ALARM FLOAT
ALARM
35”
RUBBER CORD
SEALING BUSHING
LIFTING EYE BOLT
OVERRIDE
ON
OFF
11/2FLEXIBLE CONDUIT
(BY OTHERS)
PUMP & CONTROLS
FURNISHED WITH
15’ CORD
FIBERGLASS
SUMP BASIN
36”
OFF
ON
WG 20
GRINDER PUMP
OVERRIDE
ALARM CONTROL
OPTIONAL
SEALED LEVEL SWITCH CAN BE
REMOVED FROM OUTSIDE OF BASIN
WITHOUT DISTURBING COVER
CONTROL CORD &
ALARM CORD TO BE
TAPED TO CONDUIT
“O” RING SEAL INLET FLANGE
FOR 41/2O.D. PIPE, PLASTIC
PUMP SUPPORT
COLLAR
MYERS FREE FLOW 11/4
ANGLE CHECK VALVE2” PLASTIC PIPE
3” VENT PIPE
11/4 GATE VALVE
(BY OTHERS)
11/4 SLIP COUPLING
(BY OTHERS)
3”
4”
SET CLAMP AT BOTTOM
OF INLET PIPE FOR ALL
ALARM CONTROL
TYPICAL DRAWING FOR INSIDE
INSTALLATION MODEL B12-3036D
DUPLEX GRINDER PUMPS
HEIGHT TO SUIT
INSTALLATION NOT
MORE THAN 14 INCHES
POUR CONCRETE AROUND BASIN
TO ANCHOR IN PLACE, FILL BASIN
WITH WATER TO INLET PIPE TO
PREVENT BASIN FROM FLOATING
UP WHEN CONCRETE IS POURED IN.
TYPICAL INSTALLATION MODEL B12-3036D DUPLEX GRINDER PUMPS
13800A794 06/19/17
5

11/2SUPPORT PIPE FLANGE
CAST IRON PUMP COVER
LIFTING EYE
“ON” LEVEL CONTROL
MOTOR POWER CORD
MOTOR CONTROL CORD
“OFF” LEVEL CONTROL CORD
ALARM CONTROL CORD
11/4DISCHARGE FLANGE
MYERS CV-125
ANGLE CHECK VALVE
ALLOW SUFFICIENT CORD
TO REACH CONTROL BOX,
STANDARD LENGTH FOR PUMP
& CONTROLS IS 15 FEET
11/2CONDUIT BUSHING
SUPPORT COLLAR
BOTTOM OF INLET PIPE
ALARM CONTROL
11/2SUPPORT PIPE & CONDUIT
FOR MOTOR CORDS
11/2PIPE COUPLING
WG-20 GRINDER PUMP
NOT MORE THAN 16”
HEIGHT TO SUIT INSTALLATION
USE GASKET BETWEEN
PUMP COVER & BASIN COVER
“ON” LEVEL CONTROL
11/4SLIP COUPLING
11/4DISCHARGE PIPE
“OFF” LEVEL CONTROL
2”
32”
PIPING ASSEMBLY FOR DUPLEX SYSTEM 30" x 36" BASIN
13800A794 06/19/17 6

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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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