Pentair CMV1830 User manual

pentair.com
INSTALLATION AND
OPERATION MANUAL
BASIN ASSEMBLY PUMP
MODEL CMV1830
25581A043 (04/01/2021) ©2021 Pentair. All Rights Reserved.

25581A043 (04/01/2021)2
TABLE OF CONTENTS
INTRODUCTION
Safety Instructions..................................................................................................................................................................................3
Installation........................................................................................................................................................................................... 4-5
Repair Parts Index ...................................................................................................................................................................................6
Warranty..................................................................................................................................................................................................7

25581A043 (04/01/2021) 3
SAFETY INSTRUCTIONS
SAFETY SYMBOLS
This is the safety alert symbol. When you see this symbol
on your pump or in this manual, look for one of the following
signal words and be alert to the potential for personal injury:
DANGER warns about hazards that will cause serious
personal injury, death or major property damage if ignored.
warns about hazards that can cause serious
personal injury, death or major property damage if ignored.
warns about hazards that will or can cause minor
personal injury or property damage if ignored.
The word NOTICE indicates special instructions that are
important but not related to hazards.
GENERAL SAFETY
 Carefully read and follow all safety instructions in this
manual and on the unit itself.
 Follow all applicable local and state codes and regulations.
 Keep safety labels in good condition, replacing any missing
or damaged labels.
 Vent sewage or septic tank according to local codes.
 Do not install pump in any location classified as hazardous
by National Electrical Code, ANSI/NFPA 80-1984 or the
Canadian Electrical Code.

During operation the pump is in water. To avoid fatal shocks,
proceed as follows if pump needs servicing:
 Do not smoke or use devices that can generate sparks in a
septic (gaseous) environment.
 Disconnect power to outlet box before unplugging pump.
 Take extreme care when changing fuses. Do not stand in
water or put your finger in the fuse socket.
 Do not modify the cord or plug. When using cord and
plug, use a grounded outlet only. When wiring to a system
control, connect ground lead to the system ground.
 Be sure that construction and access to septic sumps
conform with all OSHA requirements.
 Do not run the pump dry. Dry running can overheat the
pump, (causing burns to anyone handling it) and will void the
warranty.
 The pump normally runs hot. To avoid burns when servicing
pump, allow it to cool for 20 minutes after shutdown before
handling it.
 The pump is permanently lubricated. No oiling or greasing
is required in normal operation. For overhaul, see
instructions under this manual's Maintenance section.
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.
ELECTRICAL SAFETY
DANGER 
When installing, operating, or servicing this pump, follow the
safety instructions listed below.
 DO NOT splice the electrical power cord.
 DO NOT allow the plug on the end of the electrical cord to
be submerged.
 DO NOT use extension cords. They are a fire hazard and
can reduce voltage sufficiently to prevent pumping and/or
damage motor.
 DO NOT handle or service the pump while it is connected to
the power supply.
 DO NOT remove the grounding prong from the plug or
modify the plug. To protect against electrical shock,
the power cord is a three-wire conductor and includes
a 3-prong grounded plug. Plug the pump into a 3-wire,
grounded, grounding-type receptacle. Connect the pump
according to the NEC or CEC and local codes.
 BE SURE that power supply information (Voltage/ Hertz/
Phase) on pump motor nameplate matches incoming power
supply exactly. Install pump according to all electrical
codes that apply.
Before installing your pump, check carefully for shipping
damage. Any claim for shipping damage must be made with your
supplier at the point of purchase. The manufacturer cannot
make shipping damage adjustments.

25581A043 (04/01/2021)4
INSTALLATION
Your CMV1830 is designed to operate automatically or manually
and for simple and quick installation. The pre-set fluid level
control allows for efficient operation when installed in a
standard 18" x 30" sewage basin.
ELECTRICAL INFORMATION
Risk of electrical shock – This pump is supplied
with a grounding conductor and grounding type attachment
plug. To reduce the risk of electrical shock, connect only to a
properly grounded grounding type receptacle. This pump has
not been investigated for use in swimming pool/fountain areas.
Read instructions before installing pump.

the pump is connected to electrical power.
Check the electrical circuit to make sure it meets the voltage
and amperage requirement listed on the motor name plate.
Your electrical service outlet should meet the National Electric
Code and/or local codes. Your pump should have a separate
branch circuit, properly fused and grounded. The outlet should
be 4' above the floor and close enough to your pump that the
original cord can reach it. Never use an extension cord.
Plug the switch power cord into a properly grounded outlet. Plug
the pump power cord into the back of the switch cord plug. Tape
the power cords to the discharge pipe every 12 inches to make
sure any movement will not damage the insulation. Do a neat job!
To test the system, add water to the sewage basin until the float
switch operates normally.
Your pump has thermal overload protection. If the impeller
becomes locked because of a foreign object, the motor will
overheat and the thermal overload switch will cut off the
electricity. Unplug pump and remove the foreign object
immediately. See that the impeller turns freely.
Always disconnect your pump and switch from
the electrical power source before doing any maintenance.
INSTALLATION
This is a sewage handling pump and must be vented in
accordance with local plumbing codes. This pump is not to be
installed in locations classified as hazardous in accordance with
National Electric Code, ANSI/NFPA 70.
The motor in your new submersible sewage pump is oil-filled for
efficient operation. DO NOT loosen the three motor
housing screws.
Place sewage pump on the bottom of the basin and position it
to allow float to rise in center of basin (see Figure 1). Check that
nothing interferes with the float switch.
Slip cover over discharge pipe and power cord. Bolt cover
securely to basin (be sure to use a cover gasket). Install
discharge compression fitting and cord seal grommet.
CHECK VALVE
A properly designed full-flow check valve MUST be used on
every installation. A series CV-200P is provided. It eliminates
back-flow, reduces vibration and acts as a pipe union for easy
servicing. Install on discharge pipe (make certain that arrow
on valve body points in flow direction). Connect outlet of check
valve to the plumbing line leading to the sanitary sewer system.
SWITCH ADJUSTMENT AND REPLACEMENT
INSTRUCTIONS
Always disconnect the pump and switch from
the electrical power source before doing any maintenance! This
pumps is equipped with a float switch and does not control both
sides of the electrical circuit. To reduce the risk of electrical
shock it is essential that it be wired in series with the hot side of
the electrical circuit. Make sure your outlets are wired according
to your local electrical code.
1. Inspect the pump to be certain that there are no rocks, lint,
etc. clogging the openings where water enters the pump
housing. Remove any debris. Check to see that the impeller
turns freely.
2. Plug the pump power cord into a properly grounded, 3 hole
outlet. If the pump works, (impeller turns and air is blowing
out of discharge opening), proceed to Step 3. If the pump

3. If the pump works, (1) unplug pump and (2) replug into back
of switch plug and (3) plug the assembly into the electrical
outlet. Raise switch by hand to activate pump. If pump turns
on, pump and switch are OK there is no need to replace. If
pump does not turn on, the switch is defective and must
be replaced. Proceed to step 4. Then, with a new switch,
repeat step 3. If pump turns on, the problem is solved.
4. To replace switch, remove screw from tether clamp. In
assembling new switch, position cable tie (17190A008) so

excess length. Mount tie to the pump with a # 10-24UNC x


25581A043 (04/01/2021) 5
REPAIR PARTS INDEX
1
2
REF. NO. PART NUMBER DESCRIPTION
125533D100 Basin 18 x 30 Reg. Top for Solid Covers or Split Covers
125960D000 IAPMO Basin, 18 x 30 Reg. Top for Solid Covers (16) Hole (Optional)
225536C101 Cover, Solid, Domed Plastic, (4) Hole, 2" or 3" Vent
225536C010 Cover, Split, 2" Vent (Optional)
225536C011 Cover, Split, 3" Vent (Optional)
225961C401 IAPMO Cover, Solid, Steel (16) Hole, 2" or 3" Vent (Optional)

25581A043 (04/01/2021)6
DIMENSION DATA

25581A043 (04/01/2021) 7
WARRANTY
During the time periods and subject to the conditions
hereinafter set forth, Pentair Myers will repair or replace to the
original user or consumer any portion of your new Pentair Myers
product which proves defective due to defective materials or
workmanship of Pentair Myers. Contact your nearest authorized
Pentair Myers dealer for warranty service. At all times Pentair
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 Pentair Myers is NOT COVERED BY THIS
WARRANTY.
WARRANTY PERIOD
PUMPS: 12 months from date of installation or 18 months from
date of manufacture, whichever occurs first.
Pentair 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
Pentair 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; (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 converted or if three phase power
is supplied by only two transformers, making an open Delta
system.
RETURNED OR REPLACED COMPONENTS
Any item to be replaced under this Warranty must be returned
to Pentair Myers at Ashland, Ohio or such other place as Pentair
Myers may designate, freight prepaid.
PRODUCT IMPROVEMENTS
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 units sold and/or
shipped prior to such change or improvement.
WARRANTY EXCLUSIONS
As to any specific Pentair Myers product, after the expiration
of the time period of the warranty applicable thereto as set
forth under the heading "Warranty Periods" above, THERE WILL
BE NO WARRANTIES INCLUDING ANY IMPLIED WARRANTIES
OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR
PURPOSE.
Some states do not allow limitations on how long an implied
warranty lasts, so the above limitation may not apply to you.
No warranties or representations at any time made by any
representative of Pentair Myers shall vary or expand the
provisions hereof.
PRODUCT IMPROVEMENTS
IN NO EVENT SHALL PENTAIR MYERS BY LIABLE OR
RESPONSIBLE FOR CONSEQUENTIAL, INCIDENTAL OR SPECIAL
DAMAGES RESULTING FROM OR RELATED IN ANY MANNER TO
ANY MYERS PRODUCT OR PARTS THEREOF.
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 other suitable proof of this installation date,
the effective date of this warranty will be based upon the date of
manufacture plus one year.
Direct all notices, etc. to: Warranty and Product Service
Department, Pentair Myers, 1101 Myers Parkway, Ashland, Ohio
44805-1969.
DETERMINATION OF UNIT DATE OF MANUFACTURER:
Submersible sump pump (8-94) month and year stamped on
pump nameplate; column sump pump month and year stamped
on red warranty tag.
Limited Warranty
Myers®warrants to the original consumer purchaser (“Purchaser” or “You”) of the products listed below, that they
will be free from defects in material and workmanship for the Warranty Period shown below.
Product Warranty Period
whichever occurs first:
Jet pumps, small centrifugal pumps, submersible
pumps and relatedaccessories
12 months from date of original installation,
or 18 months from date of manufacture
Fibrewound Tanks 5 years from date of original installation
Steel Pressure Tanks 5 years from date of original installation
Sump/Sewage/Effluent/Utility/Battery Backup Products 36 months from date of manufacture
Wastewater Solids Handling Pumps 12 months from date of shipment from factory
or 18 months from date of manufacture
Our warranty applies only where such products are used in compliance with the requirements of the applicable
product catalog and/or manuals. For additional information, please refer to the applicable standard limited
warranty featured in the product manual.
Our warranty will not apply to any product that, in our sole judgment, has been subject to negligence,
misapplication, improper installation, or improper maintenance. Without limiting the foregoing, operating a
three phase motor with single phase power through a phase converter will void the warranty. Note also that
three phase motors must be protected by three-leg, ambient compensated, extra-quick trip overload relays of
the recommended size or the warranty is void.
Your only remedy, and MYERS’s only duty, is that MYERS repair or replace defective products (at MYERS’s choice).
You must pay all labor and shipping charges associated with this warranty and must request warranty service
through the installing dealer as soon as a problem is discovered. No request for service will be accepted if
received after the Warranty Period has expired. This warranty is not transferable.
MYERS SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL, OR CONTINGENT DAMAGES
WHATSOEVER.
THE FOREGOING LIMITED WARRANTIES ARE EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED
WARRANTIES, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. THE FOREGOING LIMITED WARRANTIES SHALL NOT EXTEND BEYOND THE
DURATION PROVIDED HEREIN.
Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations on the
duration of an implied warranty, so the above limitations or exclusions 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.
This Limited Warranty is effective January 1, 2021 and replaces all undated warranties and warranties dated
before January 1, 2021.
PENTAIR MYERS
293 Wright Street, Delavan, WI 53115
Phone: [phone] • Fax: [phone] • www.femyers.com
In Canada: 490 Pinebush Road, Unit 4, Cambridge, Ontario N1T 0A5
Phone: [phone] • Fax: [phone]

All indicated Pentair trademarks and logos are property of Pentair. Third party registered and unregistered trademarks and logos are the property of their respective owners.
Because we are continuously improving our products and services, Pentair reserves the right to change specications without prior notice. Pentair is an equal opportunity employer.
25581A043 (04/01/21) ©2021 Pentair. All Rights Reserved.
AMERICAS
1101 Myers Parkway
Ashland, Ohio 44805
PH: 855-274-8947
CANADA
490 Pinebush Road,
Unit 4
Cambridge, Ontario,
Canada N1T 0A5
PH: 800-363-7867
pentair.com