Pentair Myers MVPH-100 User manual

OWNER’S MANUAL
Multi-Stage Deep Well Jet Pumps
© 2013 Pentair, Ltd. All Rights Reserved. MY757 (Rev. 02/05/13)
293 WRIGHT STREET, DELAVAN, WI 53115 WWW.FEMYERS.COM
PH: 888-987-8677
368 1293ASB NF
20 100
80
60
40
MVPH-100 1 HP
MVPH-150 1-1/2 HP
MVPH-200 2 HP
Installation/Operation/Parts
For further operating, installation, or maintenance assistance:
Call 1-888-987-8677

Safety 2
READ AND FOLLOW
SAFETY INSTRUCTIONS!
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:
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 label NOTICE indicates special instructions which
are important but not related to hazards.
Carefully read and follow all safety instructions in this
manual and on pump.
Keep safety labels in good condition.
Replace missing or damaged safety labels.
Make workshops childproof; use padlocks and master
switches; remove starter keys.
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
Capacitor voltage may be hazardous.
To discharge motor capacitor, hold insulated handle
screwdriver BY THE HANDLE and short capacitor
terminals together. Do not touch metal screwdriver
blade or capacitor terminals. If in doubt, consult a
qualified electrician.
GENERAL SAFETY
Do not touch an operating motor. Modern
motors are designed to operate at high temperatures. To
avoid burns when servicing pump, allow it to cool for 20
minutes after shut-down before handling.
Do not allow pump or any system component to freeze.
Freezing may damage system, leading to injury or
flooding. Allowing pump or system components to freeze
will void warranty.
Relief valve must be capable of passing full pump flow at
75 PSI.
Pump water only with this pump.
Periodically inspect pump and system components.
Wear safety glasses at all times when working on pumps.
Keep work area clean, uncluttered and properly lighted;
store properly all unused tools and equipment.
Keep visitors at a safe distance from the work areas.
WARNING
Hazardous pressure!
Install pressure relief
valve in discharge pipe.
Release all pressure on
system before working on
any component.
WARNING
Hazardous voltage.
Can shock, burn, or
cause death.
Ground pump before
connecting to power
supply. Disconnect power
before working on pump,
motor or tank.
Wire motor for correct
voltage. See
“Electrical” section of
this manual and motor
nameplate.
Ground motor before
connecting to power
supply.
Meet National
Electrical Code,
Canadian Electrical
Code, and local codes
for all wiring.
Follow wiring
instructions in this
manual when
connecting motor to
power lines.

Table of Contents 3
Page
General Safety .....................................................................................................2
Warranty..............................................................................................................3
Installation........................................................................................................4-7
Electrical...........................................................................................................8-9
Operation .....................................................................................................10-11
Maintenance.................................................................................................12-13
Troubleshooting.................................................................................................14
Repair Parts .................................................................................................15-16
Limited Warranty
F.E. 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
Jet pumps, small centrifugal pumps, submersible pumps and relatedaccessories
whichever occurs first:
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 Products 12 months from date of original installation,
or 24 months from date of manufacture
Our warranty will not apply to any product that, in our sole judgement, 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 F.E. MYERS’s only duty, is that F.E. MYERS repair or replace defective products (at F.E. 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.
F.E. 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 June 1, 2011 and replaces all undated warranties and warranties dated before June 1, 2011.
F.E. MYERS
293 Wright Street, Delavan, WI 53115
Phone: [phone] • Fax: [phone] • www.femyers.com
In Canada: P. O. Box 9138, 269 Trillium Dr., Kitchener, Ontario N2G 4W5
Phone: [phone] • Fax: [phone]

1096 0697
Pump
Body
From
Well
Dirt and Scale Plug Pump and Pipes!
Use New Pipe for Best Results.
Clean Flow!
1100 0697
No Sags
Sags Allow Air Pockets
If Air Pockets Form, Water Won’t Flow.
Keep Pipe Straight and Angled up to Pump.
1101 0697
Figure 1: No Dirt or Scale in Suction
Pipe
Figure 2: Foot Valve Must Work Freely
Figure 3: No Air Pockets in Suction
Pipe
Installation 4
Figure 4: Suction Pipe Must Not Leak
BEFORE YOU INSTALL YOUR PUMP
NOTE: For proper performance, pump MUST be matched to ejector and
to well depth. Use shallow well installation for wells up to 25 ft depth to
water and deep well ejector for depths up to 130 ft.
Step 1. Long runs and many fittings increase friction and reduce flow.
Locate pump as close to well as possible: use as few elbows and
fittings as possible.
Step 2. Be sure well is clear of sand. Sand will plug the pump and void the
warranty.
Step 3. Protect pump and all piping from freezing. Freezing will split
pipe, damage pump and void the warranty. Check locally for frost
protection requirements (usually pipe must by 12” below frost line
and pump must be insulated).
Step 4. Be sure all pipes and foot valve are clean and in good shape.
Step 5. No air pockets in suction pipe.
Step 6. No leaks in suction pipe. Use PTFE pipe thread sealant tape to seal
pipe joints.
Step 7. Match pump to well.
IMPORTANT: Flow into well must at least equal flow out through
pump!
Step 8. Unions installed near pump and well will aid in servicing. Leave
room to use wrenches.
Step 9. Plug 1” drive port when installing on shallow well.
SHALLOW WELL/CENTRIFUGAL INSTALLATION
No ejector is used in this case, plug the smaller of the two inlet ports,
using the larger for the suction pipe. Refer to Figure 6 for installation tips.
Maximum depth to water for shallow well/centrifugal operation is 25 feet.
NOTE: To avoid pump overloading and motor failure, install a flow control
valve at the discharge to limit flow to 20 gallons per minute.
1102 0697
No Air Leaks
in Suction Pipe.
Pipe Joint
Compound Will
Damage Plastic.
If Air Flows
Water Won’t
Use PTFE Tape
Be sure
entire
well
point is
below
water.
Drive
Coupling
Drive
Point
Check
Valve
1" NPT
Plug
Well
Casing
1" NPT
Plug
Well
Casing
Foot
Valve &
Strainer
Foot
Valve &
Strainer
Shallow well is less
than 25' (7.6M)
to water with
pump running.
Deep well is more
than 25' (7.6M)
to water with
pump running.
822 0697
Figure 5: Double Pipe Deep Well Figure 6: Cased Shallow Well
and Drive Point Shallow Well
Be sure
entire
well
point is
below
water.
Drive
Coupling
Drive
Point
Check
Valve
1" NPT
Plug
Well
Casing
1" NPT
Plug
Well
Casing
Foot
Valve &
Strainer
Foot
Valve &
Strainer
Shallow well is less
than 25' (7.6M)
to water with
pump running.
Deep well is more
than 25' (7.6M)
to water with
pump running.
822 0697

Installation 5
PIPING IN THE DEEP WELL
See Figures 7 and 8.
NOTE: Deep well installations are either single pipe (2” wells) or double
pipe (4” and larger wells). In a double pipe installation, the larger pipe is
the suction pipe and the smaller pipe is the drive pipe (very deep wells
may use suction and drive pipes of the same diameter).
Plastic pipe is ideal for double pipe installations. Due to its light weight,
it is easy to handle and does not usually require a block and tackle for
installation and removal.
PLASTIC PIPE INSTALLATION – DOUBLE PIPE
NOTE: Use PTFE pipe thread sealant tape on all male threads on plastic
pipe and fittings to prevent air leaks in suction piping.
Step 1. Inspect ejector to make sure that nozzle and venturi openings are
clean and clear.
Step 2. Inspect pipe for any foreign matter or obstructions.
IMPORTANT: Make sure that no foreign matter enters pipe
openings while installing pump.
Step 3. Make sure foot valve operates freely: attach to ejector with a close
nipple. Use PTFE pipe thread sealant tape on male threads.
Step 4. Install nozzle and venturi in deep well ejector.
Step 5. Using PTFE pipe thread sealant tape on male threads, install
special plastic pipe adapter (supplied with ejector) by screwing
adapter into 1-1/4” tapped hole in ejector body (see Figure 7A).
Step 6. Thread a 1” plastic pipe adapter into the 1” tapped hole in ejector
body (see Figure 7A).
Step 7. Install sufficient plastic pipe in well casing to place ejector at the
proper depth. (Your well driller should supply this information.)
IMPORTANT: as a guide, the ejector should be set at least 10
to 20 feet below the lowest water level with pump running, if
possible, but always at least five feet from the bottom of the well.
Step 8. Tighten all hose clamps securely on plastic pipe. Use two clamps
per joint to prevent air leaks into suction pipe. Clamp screws
should be on opposite sides of the pipe. Fill pipes with water to
make sure that foot valve and connections do not leak.
Step 9. Install sanitary well seal on top of well casing; use steel nipple
through well seal as shown in Figure 7A.
IMPORTANT: align locating lugs on adapter flange and pump
base so that pump discharge will be aligned with piping.
Step 10. Install 1” nipple in one side of adapter flange. Slide threadless
coupling down over drive pipe from well. Thread adapter flange
onto suction pipe from well and align nipple and drive pipe.
Step 11. Slide threadless coupling up and secure nipple to drive pipe.
Step 12. Remove paper backing from adhesive gasket. Apply gasket to
adapter flange, making sure that holes line up.
Step 13. Align locating lugs on pump base with locating lugs on adapter
flange; attach pump to flange with cap screws provided.
Step 14. See “Discharge Pipe Sizes” for information regarding correct
discharge pipe size.
Figure 7
Pump
Pump
Gasket
Gasket
Adapter Flange
Adapter Flange
Threadless
Coupling
Sanitary
Well Seal
Steel Pipe Nipple
Coupling
1" Plastic Drive Pipe
1" Plastic Pipe Adapter
Ejector Assembly
Foot Valve & Strainer
1-1/4" Plastic Suction Pipe
Special 1-1/4" Plastic Pipe
Adapter. (Supplied with Ejector)
Sanitary
Well Seal
1" Drive Pipe
Ejector Assembly
Foot Valve & Strainer
1-1/4" Suction Pipe
Threadless Coupling
A-OFFSET INSTALLATION
PLASTIC PIPE SHOWN
B-OVER THE WELL INSTALLATION
STEEL PIPE SHOWN
474 0194
Pump Pump
Gasket
Gasket
Adapter Flange
Adapter Flange
Threadless
Coupling
Sanitary
Well Seal
Steel Pipe Nipple
Coupling
1" Plastic Drive Pipe
1" Plastic Pipe Adapter
Ejector Assembly
Foot Valve & Strainer
1-1/4" Plastic Suction Pipe
Special 1-1/4" Plastic Pipe
Adapter. (Supplied with Ejector)
Sanitary
Well Seal
1" Drive Pipe
Ejector Assembly
Foot Valve & Strainer
1-1/4" Suction Pipe
Threadless Coupling
A-OFFSET INSTALLATION
PLASTIC PIPE SHOWN
B-OVER THE WELL INSTALLATION
STEEL PIPE SHOWN
474 0194