Pentair WGX30 User manual

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©2021. All Rights Reserved. Part # 23833A656 | (09/01/21)
INSTALLATION AND
OPERATION MANUAL
SUBMERSIBLE GRINDER PUMPS
MODELS WGX30/50, WGX30H/50H/75H, VSX30/50
AND VHX30/50/75
Used in Hazardous Locations Class I, Division 1, Groups C & D
For use with product built with Regal motor.
MYERS

TABLE OF CONTENTS
Safety Information ................................................................................................................................................................................... 3
Installation and Operation ........................................................................................................................................................................4
Wiring Diagrams ....................................................................................................................................................................................... 6
Repair Parts Index .................................................................................................................................................................................... 9
Troubleshooting ......................................................................................................................................................................................14
V and VR Series Limited Warranty ...........................................................................................................................................................18
Standard Limited Warranty.....................................................................................................................................................................19
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.

3
Part # 23833A656 (09-01-21)
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.
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.
NOTICE indicates special instructions which are important but
not related to hazards.
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.
GENERAL SAFETY
 Most accidents can be avoided by using common sense.
 Read the operation and maintenance instruction manual
supplied with the pump.
 Do not wear loose clothing that can become entangled in
the impeller or other moving parts.
 This pump is designed to handle materials that could cause
illness or disease through direct exposure.
 Wear adequate protective clothing when working on the
pump or piping.
ELECTRICAL SAFETY
 To reduce the risk of electrical shock, pump must be
properly grounded in accordance with the National
Electric Code and all applicable state and local codes and
ordinances.
 To reduce risk of electrical shock, disconnect the pump
from the power source before handling or servicing.
 Any wiring to be done on pumps should be done by a
qualified electrician.
 Never operate a pump with a power cord that has frayed or
brittle insulation.
 Never let cords or plugs lie in water.
 Never handle connected power cords with wet hands.
PUMPS
 Pump builds up heat and pressure during operation; allow
time for pump to cool before handling or servicing.
 Only qualified personnel should install, operate or repair
pump.
 Keep clear of suction and discharge openings. Do not
insert fingers in pump with power connected.
 Do not pump hazardous material not recommended for
pump (flammable, caustic, etc.).
 Make sure lifting handles are securely fastened each time
before lifting.
 Do not lift pump by the power cord.
 Do not exceed manufacturer's recommendation for
maximum performance, as this could cause the motor to
overheat.
 Secure the pump in its operating position so it cannot tip
over, fall or slide.
 Keep hands and feet away from impeller when power is
connected.
 Submersible solids handling pumps are not approved for
use in swimming pools, recreational water installations,
decorative fountains or any installation where human
contact with the pumped fluid is common.
 Do not operate pump without safety devices in place.
IMPORTANT! Myers is not responsible for losses, injury or death
resulting from a failure to observe these safety precautions,
misuse or abuse of pumps or equipment.
SAFETY INFORMATION

4Part # 23833A656 (09-01-21)
GENERAL INFORMATION
PUMP MODELS
These instructions cover the installation and service of the
Myers pumps as listed on the front cover. The hazardous
location models are Factory Mutual approved and listed
hazardous location for hazardous sewage locations Class I,
Division 1, Groups C & D.
MOTOR HP & VOLTAGES
These pumps are offered in a three phase wiring configuration
only. Voltages will vary according to the application.
ELECTRICAL CONTROLS
All of these pump models must be used with a control panel.
Myers-built control panels are designed to supply the correct
electrical controls, motor starting equipment and include the
circuitry for moisture and heat sensors. It is recommended that
a Myers-built control panel be used so that all warranties apply.
GENERAL CONSTRUCTION
The motor construction is designed to meet Factory Mutual’s
requirements for Class I, Division1, Groups C & D sewage
applications. The hazardous location models are certified and
nameplated with this approval. The motor chamber and seal
chamber are filled with a high dielectric type oil for improved
lubrication and heat transfer of the bearings and motor. Since
the bearings have been designed for 50,000 hours of life, the
oil should never require replacement under normal operating
conditions. An air space above the oil level in both the seal
and motor chambers is provided to allow for the expansion of
the oil when at operating temperature. The power and control
lines are sealed and strain relieved by a grommet in the cord
cap, and internally through the use of a dielectric potting resin
surrounding the electrical wires. All of the pump fasteners and
shafts are made from corrosion resistant stainless steel, while
the pump castings are made of ASTM A-48 Class 30 cast iron.
HAZARDOUS LOCATION SERVICE
These pumps are to be used for handling sewage, wastewater
and storm water only. Do not use in other hazardous locations.
These pumps must be repaired and serviced only at Myers
authorized service centers or at the Myers factory. Any
unauthorized field repair voids warranty, hazardous location
rating and Factory Mutual approval.
After the pump is installed and sewage has
entered the basin there are methane and hydrogen sulfide
gases, which are poisonous. Never enter a wet well unless the
cover is open for a sufficient period of time to allow fresh air into
the basin. Myers recommends using the rail lift-out system so
that no service is required inside the basin.
OIL FILLED MOTOR
The motor chamber and seal chamber are dielectric oil-filled
for good heat transfer and lubrication of bearings and seals.
The motor requires no other lubrication. Oil level in the motor
housing should be to the bottom of the oil fill plug with the pump
in a vertical position, ensuring the upper bearing is submerged
in oil. Do not overfill the motor housing since some space is
required for oil expansion. Oil level in the seal chamber should be
checked with the pump lying horizontally with the fill plug at the
top. The oil level should be approximately 3/4" from the outside
surface of the housing. Transformer oil should be used and may
be purchased from your Myers distributor.
MOTOR
Each motor is provided with heat sensor thermostats attached
directly to the motor windings. The thermostats open if the
motor windings see excessive heat and, in turn, open the motor
contractor in the control panel, breaking the power to the pump.
When the motor is stopped due to an overheated condition, it
will not start until the motor has cooled and the heat sensor
reset button is manually pushed on the front of the Myers control
panel. This circuitry is provided in the Myers control panel
designs.
The thermostats are set to open at a temperature of 248°F
(120°C). The maximum contact rating is 18 amps at 115 VAC and
12 amps at 230 VAC. Motor winding insulation is good for Class F
( 3 11 ° F, 1 5 5 ° C) .
Note: Failure to use proper circuitry and to connect the motor
overheat protection in the control panel would negate all
warranties and FM approval.
MOTOR SEAL FAILURE WARNING
The seal chamber is oil filled and provided with moisture sensing
probes to detect water leakage through the lower shaft seal.
The probes can also detect moisture present in the upper motor
housing.
The presence of water energizes a red seal leak warning light at
the control panel. This is a warning light only, and does not stop
the motor. It indicates a leak has occurred and the pump must be
repaired. Normally, this indicates the outboard seal has leaked.
Allowing the unit to operate after the warning could cause upper
seal leakage along with motor failure.
The resistance across the moisture sensing (seal failure) probes,
should be checked after a seal leak warning light has lit. This
can be done by disconnecting the red and orange control wires
from the control panel, and measuring the resistance with an
ohmmeter between the wires. If the measured values are below
specification, then the pump may have a lower seal failure and
require service.
INSTALLATION AND OPERATION

5
Part # 23833A656 (09-01-21)
On the Myers hazardous location control panels the seal leak
test switch tests the seal leak circuit continuity. When pushed,
the seal leak test bulb should light. If the test bulb does not light,
it means either the wiring circuitry to the seal leak probes has
been broken or the bulb has burned out.
Note: Myers-built control panels supply the correct circuitry
for moisture and heat sensor connections. Failure to install the
correct circuitry with proper connection would negate warranty
and FM approval.
MOTOR POWER CORD, CONTROL CORD AND CORD CAP
ASSEMBLY
Each motor power cord has 4 conductors – white, black, red
and green. For a three phase motor the red, black and white
conductors connect to the three line leads, and the green is
connected to a good ground. Interchanging any two line leads
will reverse the rotation of the motor.
Note: Rotation should be clockwise when observed from the top
of the pump. This can be checked by noting which direction the
pump torque is up on initial starting. A properly rotating pump
will torque counterclockwise upon start.
The control cable has 5 conductors – black, white, red, orange
and green. White and black connect to the heat sensor terminals
in the control panels; red and orange connect to the seal failure
terminals in the control panel; and the green connects to the
ground in the control panel.
The cord cap is epoxy potted. The cord cap provides for a
sealed wire connection. This allows the cord cap, with cords,
to be removed from the motor. An approved hazardous location
junction box is required for hazardous locations. The control and
power cables cannot be spliced!
Note: Each cable has a green ground wire and must be properly
grounded per the National Electric Code and
local codes.
ELECTRICAL MOTOR CONTROLS
All electrical controls and motor starting equipment should
be as specified in these instructions. Consult factory for any
acceptable alternates. For hazardous locations the controls and
control panel must be installed outside the hazardous area, or
approved hazardous location controls that are intrinsically safe
must be used.
JUNCTION BOX
If a junction box is used in a hazardous location, it must be a
hazardous location approved type with hazardous location cord
connectors. Wires from the junction box must pass through a
hazardous location seal connector.
LEVEL SENSING CONTROLS
Intrinsically safe-type float controls are recommended for
all applications and required for hazardous location service.
An intrinsically safe control panel relay will limit the current
and voltage to the level controls. A Myers control panel can be
supplied with this typecircuitry.
The float level controls maintain the basin sewage water level by
controlling pump turn-on and turn-off levels.
1. The lower turn-off control should be set so that the pump
stops at approximately the top of the pump. Consult the
factory for any settings below this point.
2. The upper turn-on control should be set above the lower
turn-off control. The exact height between the two controls
is determined by the number of pump starts desired and the
depth of the basin. A maximum of 10 starts per hour should
not be exceeded.
3. The override control is set at a specified height above the
upper turn-on control.
4. The alarm control is set about 6" to 12" above the override
control.
5. No control should be set above the inlet invert.Electrical
Connections: All electrical wiring must be in accordance
with local code and only qualified electricians should make
the installations. All wires should be checked for shorts to
ground with an ohmmeter or megger after the connections
are made. This is important, as one grounded wire can
cause failure of the pump, control panel or personal injury.
Disconnect pump from power source before
servicing or handling pump.
REPLACING GRINDER COMPONENTS
This is the only disassembly operation allowed in the field. All
other repairs must be done at the factory or at an authorized
service facility.
IMPORTANT! Pump should be thoroughly cleaned of trash and
deposits before starting disassembly operations.
DISCONNECT ALL POWER AND CONTROL WIRES TO
MOTOR AT CONTROL PANEL BEFORE STARTING DISASSEMBLY
OPERATIONS. NEVER RELY ON OPENING CIRCUIT BREAKER
ONLY.
INSTALLATION AND OPERATIONS

6Part # 23833A656 (09-01-21)
DISASSEMBLY OF STATIONARY CUTTER PLATE AND
ROTATING CUTTER VS AND VH SERIES
1. Remove retaining washer and screw from end of
shaft. A screwdriver can be used to hold the shaft in place
by wedging it between one of the four socket head cap
screws and the rotating cutter while
loosening the screw.
2. Using a rubber mallet, or soft metal hammer, bump
rotating cutter in counterclockwise direction as thread is
right-hand. Unthread rotating cutter from shaft. Be careful
to not lose ring shims that space the rotating cutter from
the stationary cutter plate.
3. Remove four socket head cap screws holding the
stationary cutter plate to the volute. Remove stationary
cutter from volute. If stationary cutter is stuck, the socket
head cap screws can be threaded into tapped back-off
holes in plate. Tighten screws to remove plate from volute.
4. Inspect rotating cutter and stationary cutter plate for wear
and replace if worn.
5. Make sure pocket in volute is clean and reinstall stationary
cutter plate using the four socket head cap screws. Apply
blue Loctite® to the threads. Do not overtighten cap
screws.
6. Replace ring shims (if removed from the shaft) and thread
rotating cutter onto shaft. Make sure threads on shaft are
clean and use Never-Seez® or other graphite compound on
threads before replacing rotating cutter.
7. Using a rubber mallet, or soft metal hammer, bump
rotating cutter in clockwise direction to make sure it is
seated on the impeller.
8. To ensure proper operation of the cutter mechanism,
the gap between the stationary cutter plate and rotating
cutter must be no more than .010". To check the gap
use a .010" feeler gauge. If the .010" feeler gauge does
not fit between the surface of the stationary cutter and
rotating cutter and the motor shaft turns freely, the gap
is set correctly. If the .010" feeler gauge fits between the
surfaces, shims must be removed to close the gap.
9. Replace retaining washer and screw in the end of the shaft.
Be sure screw is tight. A screwdriver can be used to hold the
shaft in place by wedging it between one of the four socket
head cap screws and the rotating cutter while tightening the
screw.
10. Be sure shaft turns freely after reassembly. Some drag will
occur due to the seal, but there should be no binding or tight
spots when turning the rotating cutter.
11. If rotating cutter rubs or drags on stationary cutter plate,
recheck gap and re-shim rotating cutter.
INSTALLATION AND OPERATIONS

7
Part # 23833A656 (09-01-21)
WIRING DIAGRAM
1 2 3
POTTING
RESIN
CONTROL
CORD
TERMINAL
POSTS
POWER
CORD
ELECTRODE
HEAT SENSOR
ON STATOR
GROUND
SCREW
RED
RED
WHITE
BLACK
BLACK
BLACK
RED
WHITE
GREEN
GREEN
PROBE TEST RESISTOR
ON HAZ. LOCATION ONLY
STATOR
A
B
00
200 or 575 VOLT - THREE PHASE
1
2
3
BLACK
BLACK
172839456
POTTING
RESIN
CONTROL
CORD
TERMINAL
POSTS
POWER
CORD
ELECTRODE
HEAT SENSOR
ON STATOR
GROUND
SCREW
RED
RED
WHITE
BLACK
BLACK
BLACK
RED
WHITE
GREEN
GREEN
PROBE TEST RESISTOR
ON HAZ. LOCATION ONLY
STATOR
AB
00
230 VOLT - THREE PHASE
1
7
2
6
5
4
8
3
9
230 VOLT – SINGLE PHASE
CONTROL CORD POWER CORD
POTTING
RESIN
SPLICES
HEAT SENSOR
ON STATOR
PROBE TEST
RESISTOR
ELECTRODE
GROUND
SCREW
MOTOR
STATOR
CONNECTORS
T1
T2
T3
RED
GREEN
GREEN
BLK
Y
RED
RED
P1
P2
Y
B
R
Y
B
R
GRN
GRN
ORN
RED
Y
BLK
17
28
394
5
6
POTTING
RESIN
CONTROL
CORD
TERMINAL
POSTS
POWER
CORD
ELECTRODE
HEAT SENSOR
ON STATOR
GROUND
SCREW
RED
RED
WHITE
BLACK
BLACK
BLACK
RED
WHITE
GREEN
GREEN
PROBE TEST RESISTOR
ON HAZ. LOCATION ONLY
STATOR
AB
00
460 VOLT - THREE PHASE
1
2
3
7
4
8
4
9
5
BLACK
BLACK

8Part # 23833A656 (09-01-21)
WIRING DIAGRAM

9
Part # 23833A656 (09-01-21)
REPAIR PARTS INDEX
B4
B15
B5
A3
A2
A1
A4
B14
D4
B6
A5
C4
A5
C3
C7
C2
C6
B2
B1
B12
B8
C1
B9
B3
B11
B2
B13
C5
B7
B10
COMMON PARTS LIST
ITEM ENG. NO. DESCRIPTION QTY.
125343A100 PROBE; SEAL LEAK 2
22912A000 RESISTOR 1
205022A092 PLUG; PIPE ST GALV 1/4 HEX HD w/LOCTITE® 513
COATING 2
3
19102A020 (WGX
Series) SCREW; CAP HEX SST 7/16 x 1-1/4 LG 4
19102A021 (VSX/
VHX Series) SCREW; CAP HEX SST 7/16 x 1-1/4 LG 4
405434A043 SCREW; MACH ST 10-24 UNC x 3/8 LG 1
505876A112 RING,O; 5-1/2 OD x 5-1/4 ID x 1/8 1
622577A000 SEAL; 1-1/4 SHAFT 2
7
22569B702 35' CORD ASSEMBLY 14-4 – WGX30(H), WGX75H 1
22569B631 35' CORD ASSEMBLY 10-4 – WGX30(H), WGX50(H) 1
22569B632 35' CORD ASSEMBLY 8-4 SOOW – WGX30(H),
WGX50(H), WGX75H 1
22569B700 35' CORD ASSEMBLY 8-4 W – WGX30, WGX50(H) 1
805876A114 RING, O; 7 OD x 6-3/4 ID x 1/8 1
905876A123 RING, O; 4-7/8 OD x 4-5/8 ID x 1/8 1
10 06107A015 WASHER; LOCK SHKPRF INTERNAL ST NO 10 1
11 07597A017 SCREW; MACH FLT HD HEX SKT SST 5/16-18 UNC-
3A x 1LG 2
12 12672A003 CONNECTOR; BUTT SOLDERLESS 12-10 WIRE 3
13 19102A006 SCREW; CAP HEX 7/16-14 UNC SST 1-1/2 4
14 19102A023 SCREW; CAP HEX SST 302 7/16-14 NC x 2-1/4 4
15 19331A006 WASHER; SPRING FINGER 1.189 ID x 1.830 OD 2
16 22571D000 HOUSING; MOTOR 5 HP GRINDER PUMP CI 1
17 22578A100 WIRE; ELECTRODE FOR 3-20 HP 2
18 22590B000 CAP, BEARING; UPPER 5 HP GRINDER PUMP CI 1
ITEM DESCRIPTION WGX30/
WGX50
WGX30H/
WGX50H/
WGX75H
VHX30-75/
VSX30-50
19 O-RING 05876A113 05876A113 05876A113
20 SCREW; CAP SKT HD SST 3/8-16 UNC-3A
x 1LG 06106A027 06106A028 06106A028
21 RING; RETAINING EXTERNAL SST 1-1/4
SHAFT 12558A008 12558A008 12558A008
22 UPPER SEAL HOUSING 22576D010 22576D010 22576D020
23 LOWER SEAL HOUSING 22580C000 22638C000 22638C000
24 RING; RETAINING INTERNAL N/A N/A 07756A015
25 RING; RETAINING EXTERNAL 1.375
SHAFT N/A N/A 12558A037
MODEL SPECIFIC PARTS LIST

10 Part # 23833A656 (09-01-21)
REPAIR PARTS INDEX
WGX30/WGX50 WGX30H/WGX50H/WGX75H
B2
B5
B1
B4
B7 B6 B8
B3
B1
B2
B5
B4
B7 B6 B8B3
WET END PARTS CHARTS
ITEM DESCRIPTION ENG. NO. QTY.
B2 CASE; VOLUTE 22582D000 1
B3 SCREW; MACH FLT HD HEX SKT SST 5/16-18
UNC-3A x 1-1/4 LG 07597A021 1
B4 RETAINER; IMPELLER 5 HP GRINDER SST 22585A000 1
B5 IMPELLER; GRINDER SST 5 HP LOW HEAD 22584C000 1
B6 RING; SHREDDING SST 5 HP LOW HEAD 22586B000 1
B7 CLAMP; SHREDDING RING 5 HP GRIND PUMP
DUCTILE IRON 64-45-12 22587C000 1
B8 SCREW; CAP HEX SST 3/8-16 x 1 LG 19101A010 4
ITEM DESCRIPTION ENG. NO. QTY.
B2 CASE; VOLUTE 5 HP 22639D000 1
B3 SCREW; MACH FLT HD HEX SKT SST 5/16-18
UNC-3A x 1-1/4LG 07597A021 1
B4 RETAINER; IMPELLER 5 HP GRINDER SST 22585A000 1
B5 IMPELLER; SHREDDING FOR HIGH HEAD
GRINDER 26010B000 1
B6 RING; SHREDDING FOR HIGH HEAD GRINDER 25134B000 1
B7 CLAMP; SHREDDING RING 5 HP GRIND PUMP
DUCTILE IRON 65-45-12 22643B000 1
B8 SCREW; CAP HEX SST 3/8-16 x 1 LG 19101A010 4
IMPELLER CHARTS (PART B1)
Note: Standard non-overloading impeller diameters shown.
PUMP RPM HP TRIM IMPELLER
WGX30H-21 3450 3 5 28202C017
WGX30H-03 3450 3 5 28202C017
WGX30H-23 3450 3 5 28202C017
WGX30H-43 3450 3 5 28202C017
WGX30H-53 3450 3 5 28202C017
WGX50H-21 3450 5 6 28202C007
WGX50H-03 3450 5 6 28202C007
WGX50H-23 3450 5 6 28202C007
WGX50H-43 3450 5 6 28202C007
WGX50H-53 3450 5 6 28202C007
WGX75H-03 3450 7.5 6.5 28202C005
WGX75H-23 3450 7.5 6.5 28202C005
WGX75H-43 3450 7.5 6.5 28202C005
WGX75H-53 3450 7.5 6.5 28202C005
PUMP RPM HP TRIM IMPELLER
WGX30-21 3450 34.5 28203B011
WGX30-03 3450 34.5 28203B011
WGX30-23 3450 34.5 28203B011
WGX30-43 3450 34.5 28203B011
WGX30-53 3450 34.5 28203B011
WGX50-21 3450 5 5 28203B003
WGX50-03 3450 55.25 28203B001
WGX50-23 3450 55.25 28203B001
WGX50-43 3450 55.25 28203B001
WGX50-53 3450 55.25 28203B001

11
Part # 23833A656 (09-01-21)
REPAIR PARTS INDEX
2 POLE
3 HP 3 HP 3 HP 3 HP 5/7.5 HP 5/7.5 HP 5/7.5 HP 5/7.5 HP
230/1 200/3 230-460/3 575/3 230/1 200/3 230-460/3 575/3
A1 STATOR 22574C210 22574C211 22574C212 22574C214 22574C200 22574C201 22574C202 22574C204
A2 ROTOR 22636C101 22636C100 22636C100 22636C100 22636C203 22636C202 22636C202 22636C202
A3 BEARING 08565A022 08565A022 08565A022 08565A022 08565A022 08565A022 08565A022 08565A022
A4 BEARING 08565A023 08565A023 08565A023 08565A023 08565A023 08565A023 08565A023 08565A023
WGX30H/ WGX50H/ WGX75H
CAP SCREW TORQUE VALUE
3/8-16 20 ft.-lbs.
1/2-13 43 ft.-lbs.
5/8-11 93 ft.-lbs.
3/4-10 128 ft.-lbs.
7/8-14 193 ft.-lbs.
2 POLE
3/5 HP 3/5 HP 3/5 HP 3/5 HP
230/1 200/3 230-460/3 575/3
A1 STATOR 22574C200 22574C201 22574C202 22574C204
A2 ROTOR 22572C103 22572C102 22572C102 22572C102
A3 BEARING 08565A022 08565A022 08565A022 08565A022
A4 BEARING 08565A023 08565A023 08565A023 08565A023
WGX30/ WGX50

12 Part # 23833A656 (09-01-21)
REPAIR PARTS INDEX
B2
B6
B8
B7
B5
B3
B4
B1
VSX30/50 AND VHX30/50/75
IMPELLER CHARTS (PART B1)
PUMP RPM HP TRIM IMPELLER
VSX30-21 3450 34.25 22640C378
VSX30-03 3450 34.25 22640C378
VSX30-23 3450 34.25 22640C378
VSX30-43 3450 34.25 22640C378
VSX30-53 3450 34.25 22640C378
VSX50-21 3450 54.75 22640C374
VSX50-03 3450 5 5 22640C372
VSX50-23 3450 5 5 22640C372
VSX50-43 3450 5 5 22640C372
VSX50-53 3450 5 5 22640C372
VHX30-21 3450 34.25 22640C378
VHX30-03 3450 34.5 22640C376
VHX30-23 3450 34.5 22640C376
VHX30-43 3450 34.5 22640C376
VHX30-53 3450 34.5 22640C376
VHX50-21 3450 55.38 22640C389
VHX50-03 3450 55.38 22640C389
VHX50-23 3450 55.38 22640C389
VHX50-43 3450 55.38 22640C389
VHX50-53 3450 55.38 22640C389
VHX75-03 3450 7.5 5.63 22640C387
VHX75-23 3450 7.5 5.63 22640C387
VHX75-43 3450 7.5 5.63 22640C387
VHX75-53 3450 7.5 5.63 22640C387
WET END PARTS CHART
ITEM DESCRIPTION ENG. NO. QTY.
B2 CASE; VOLUTE V SERIES GR 56 FRAME 22639D001 1
B3 SCREW; MACH FLT HD HEX SKT SST 07597A021 1
B4 RETAINER; IMPELLER 5HP GRINDER 22585A000 1
B5 CUTTER; ROTATING V SERIES 56 FRAME 28183B000 1
B6 PLATE; STATIONARY CUTTER VH SERIES 56 FRAME 28191B000 1
PLATE; STATIONARY CUTTER VS SERIES 56 FRAME 28182B000 1
B7 SHIM 006280611 2
SHIM 006280621 4
B8 SCREW; CAP (HEX SOC) 5/16-18 x 3/4 001780011 4

13
Part # 23833A656 (09-01-21)
REPAIR PARTS INDEX
2 POLE
3 HP 3 HP 3 HP 3 HP 5/7.5 HP 5/7.5 HP 5/7.5 HP 5/7.5 HP
230/1 200/3 230-460/3 575/1 230/1 200/3 230-460/3 575/1
A1 STATOR 22574C210 22574C211 22574C212 22574C214 22574C200 22574C201 22574C202 22574C204
A2 ROTOR/SHAFT 28208C101 28208C100 28208C100 28208C100 28208C103 28208C102 28208C102 28208C102
A3 BEARING 08565A022 08565A022 08565A022 08565A022 08565A022 08565A022 08565A022 08565A022
A4 BEARING 071670211 071670211 071670211 071670211 071670211 071670211 071670211 071670211
VHX30/ VHX50/ VHX75
2 POLE
3/5 HP 3/5 HP 3/5 HP 3/5 HP
230/1 200/3 230-460/3 575/1
A1 STATOR 22574C200 22574C201 22574C202 22574C204
A2 ROTOR/SHAFT 28208C103 28208C102 28208C102 28208C102
A3 BEARING 08565A022 08565A022 08565A022 08565A022
A4 BEARING 071670211 071670211 071670211 071670211
VSX30/ VSX50

14 Part # 23833A656 (09-01-21)
CHECK LIST IF PUMP DOES NOT OPERATE PROPERLY
Checking for Moisture in Motor Use an ohm - meter or a megger
and set on highest scale. Readings on the large power cord
between any of the conductors red, black or white to the green
conductor or to the motor housing should be greater than
1,000,000 ohms (1 megohm). Service work should be done only
at an authorized service facility. Note, readings should be taken
with line leads disconnected from the control panel.
Resistance of Windings Every motor winding has a fixed
resistance. The windings must check close to specification
values. Verification of the proper wiring of a dual voltage motor
can also be checked by measuring the motor winding resistance.
TROUBLESHOOTING
CONDITION PROBABLE CAUSE
Red light comes on at control box.
This indicates some water has leaked past the lower seal and has entered the seal chamber and
made contact with the electrode probe. Pump must be removed for replacement of lower seal.
This preventive repair will save
an expensive motor.
Overload trips at control box and alarm buzzer
or ashing red light comes on due to high water
level in basin.
1. Push in on red reset button to reset overload. If overload trips again after short run, pump
has some damage and must be removed from basin for checking.
2. Trouble may be from clogged impeller causing motor to overload or could be from failed
motor.
3. Trouble may be from faulty component in control box. Always check control box before
removing pump.
Yellow run light stays on continuously.
1. Indicates H-O-A switch may be in the hand position.
2. Level control switch may have failed causing pump to continue to operate when water is
below lower control.
3. Impeller may be partially clogged causing pump to operate at very reduced capacity.
4. Gate valve or check valve may be clogged causing low pump flow.
5. Pump may be air locked.
Circuit breaker trips.
1. Reset breaker by pushing completely down on handle then back to ON position. If breaker
trips again in a few seconds it indicates excessive load probably caused by a short in the
motor or control box. Check out instructions given with control box before pulling pump.
2. If this condition happens after an electrical storm, motor or control box may be damaged
by lightning.
3. Resistance reading of the motor with lead wires disconnected from the control box can
determine if trouble is in motor or control box.
Pump is noisy and pump rate is low.
1. Impeller may be partially clogged with some foreign objects causing noise and overload on
the motor.
2. Impeller may be rubbing on wear ring due to bent shaft or misalignment.
3. Pump may be operating too close to shut-off. Check head.
Grease and solids have accumulated around
pump and will not pump out of basin.
1. Lower control switch may be set too high.
2. Run pump on hand operation for several minutes with small amount of water running into
basin to clean out solids and grease. This allows pump to break suction and surge which
will break up the solids. If level switch is set properly this condition generally will not occur.
3. Trash and grease may have accumulated around floats causing pump to operate
erratically.

15
Part # 23833A656 (09-01-21)
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16 Part # 23833A656 (09-01-21)
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17
Part # 23833A656 (09-01-21)
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18 Part # 23833A656 (09-01-21)
V AND VR SERIES LIMITED WARRANTY
LIMITED WARRANTY
Pentair Myers®warrants its V and VR series grinders against defects in material and workmanship for a period of 24 months from the
manufacturing date, or 36 months from the manufacturing date with completion of a start-up report within 30 days of installation. Product
must be properly installed, serviced and operated in compliance with the manufacturer’s instruction manuals.
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. All seal fail and heat sensing devices must be
connected, 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 eld 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 failures resulting from excessive sand, lime, cement, gravel or other abrasive materials
d) To failures caused by scale or corrosion build-up due to excessive hydrocarbons or chemical content
e) To normal maintenance services and parts used in connection with such service;
f) To units that are not installed in accordance with applicable local codes, ordinances and good trade practices;
g) If the unit is moved from its original installation location;
h) If unit is used for purposes other than for what it is designed and manufactured;
i) To any unit that has been repaired or altered by anyone other than Pentair Myers or an authorized Pentair Myers service provider;
j) To any unit that has been repaired using non factory specied/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.
V AND VR SERIES
MYERS
© 2018 Pentair plc. All Rights Reserved. Warranty Rev. (07/05/18)
1101 Myers Parkway
Ashland, OH 44805
USA
Ph: 855.274.8948
490 Pinebush Road
Unit 4
Cambridge, Ontario N1T 0A5
Canada
Ph: 800.387.4386
Orders Fax: [phone]
www.femyers.com

19
Part # 23833A656 (09-01-21)
STANDARD LIMITED WARRANTY
1101 MYERS PARKWAY 490 PINEBUSH ROAD, UNIT #4
ASHLAND, OHIO, USA 44805 CAMBRIDGE, ONTARIO, CANADA N1T 0A5
419-289-1144 800-363-PUMP
WWW.FEMYERS.COM
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.
MYERS
1101 Myers Parkway 490 Pinebush Road, Unit 4 www.pentair.com/pentair-myers
Ashland, Ohio, USA 44805 Cambridge, Ontario, Canada N1T 0A5
Ph: 419-289-1144 Ph: 800-363-PUMP
Warranty Rev. 12/13

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.
©2021 Pentair. All Rights Reserved. Part # 23833A656 (09/01/2021)
1101 Myers Parkway
Ashland, Ohio 44805
USA
Ph: 855-274-8947
490 Pinebush Road
Unit 4
Cambridge, Ontario
N1t 0A5
Canada
Ph: 800.363.7867
pentair.com