BJM Pumps SK Series Instruction manual

Version 3-24-17
INSTALLATION, OPERATION & MAINTENANCE MANUAL
SK & SKX SERIES
SHREDDER PUMPS
Electric Submersible Pumps
Single Phase
115V & 230V
Three Phase
208V, 230V, 460V & 575V
CAST IRON
SINGLE PHASE
THREE PHASE
SK750C
SK1500C
SK08C
SK15C
SK22C
SK37C
SK55C
SK75C
SK110C
SK150C
316 STAINLESS STEEL
SINGLE PHASE
THREE PHASE
SKX750CSS
SKX1500CSS
SKX08CSS
SKX15CSS
SKX22CSS
SKX37CSS
SKX55CSS
SKX75CSS
SKX110CSS
SKX150CSS
Read this manual carefully before installing, operating or servicing these pump models.
Observe all safety information. Failure to comply with instructions may result in personal
injury and/or property damage. Please retain these instructions.

3
TABLE OF CONTENTS
INTRODUCTION ............................................................................................................................................................ 3
SAFETY ......................................................................................................................................................................... 5
INSPECTION ................................................................................................................................................................. 6
PRE-INSTALLATION INSPECTION ......................................................................................................................... 6
OIL FILL QUANTITY/TYPE ....................................................................................................................................... 8
PUMP INSTALLATION ............................................................................................................................................. 8
POSITIONING THE PUMP ....................................................................................................................................... 9
PUMP ROTATION .................................................................................................................................................. 10
PUMP OPERATION ..................................................................................................................................................... 10
TYPICAL MUNICIPAL AND INDUSTRIAL WASTEWATER INTALLATION ................................................................ 11
MANUAL OPERATION ................................................................................................................................................ 11
STOPPING .............................................................................................................................................................. 12
TYPICAL MUNICIPAL OR INDUSTRIAL WASTEWATER INSTALLATION ................................................................ 14
AUTOMATIC OPERATION ..................................................................................................................................... 14
STOPPING .............................................................................................................................................................. 14
INTENDED METHODS OF CONNECTION ................................................................................................................. 15
SINGLE PHASE WIRING INSTRUCTIONS ............................................................................................................ 15
THREE PHASE WIRING INSTRUCTIONS ............................................................................................................. 15
TROUBLE SHOOTING ................................................................................................................................................ 16
PUMP WILL NOT RUN ........................................................................................................................................... 16
PUMP RUNS BUT DOES NOT DELIVER RATED CAPACITY ............................................................................... 17
SERVICING YOUR SUBMERSIBLE PUMP............................................................................................................ 17
MAINTAINING YOUR PUMP .................................................................................................................................. 17
CHANGING SEAL OIL ............................................................................................................................................ 18
EXPLODED VIEW OF SKX22CSS, SKX37CSS.......................................................................................................... 24
EXPLODED VIEW OF SK55C, SKX55CSS, SK75C, SKX75CSS ............................................................................... 25
EXPLODED VIEW OF SK110C, SKX110CSS, SK150C, SKX150CSS ....................................................................... 26
SK SERIES PARTS LIST ............................................................................................................................................. 27
SKX SERIES PARTS LIST .......................................................................................................................................... 29
SINGLE PHASE WIRING DIAGRAM 115V & 230V W/GOVERNOR SWITCH............................................................ 31
MODELS SK750C, SKX750CSS, SK1500C, SKX1500C ................................................................................... 31
THREE PHASE WIRING DIAGRAMS ......................................................................................................................... 32
208V ........................................................................................................................................................................ 32
MODELS SK08C, SKX08CSS, SK15C, SKX15CSS, SK22C, SKX22CSS, SK37C, SKX37CSS, SK55C,
SKX55CSS, ........................................................................................................................................................ 32
230V ........................................................................................................................................................................ 33
MODELS SK08C, SKX08CSS, SK15C, SKX15CSS, SK22C, SKX22CSS, SK37C, SKX37CSS, SK55C,
SKX55CSS, SKX75C, SKX75CSS, SK110C, SKX110CSS ............................................................................... 33
460V ........................................................................................................................................................................ 34
MODELS SK08C, SKX08CSS, SK15C, SKX15CSS, SK22C, SKX22CSS, SK37C, SKX37CSS, SK55C,
SKX55CSS, SKX75C, SKX75CSS, SK110C, SKX110CSS, SK150C, SKX150CSS ......................................... 34
575V ........................................................................................................................................................................ 35
MODELS SK08C, SKX08CSS, SK15C, SKX15CSS, SK22C, SKX22CSS, SK37C, SKX37CSS, SK55C,
SKX55CSS, SKX75C, SKX75CSS, SK110C, SKX110CSS, SK150C, SKX150CSS ......................................... 35
SEAL MINDER® .......................................................................................................................................................... 36
WARRANTY AND LIMITATION OF LIABILITY ............................................................................................................ 38
START-UP REPORT FORM ........................................................................................................................................ 39
NOTES: ........................................................................................................................................................................ 42

4
INTRODUCTION
This Installation, Operation and Maintenance manual provides important information on
safety and the proper inspection, disassembly, assembly and testing of the BJM
Pumps® SK & SKX Series submersible pump. This manual also contains information to
optimize performance and longevity of your BJM Pump®s submersible pump.
The submersible SK Series pumps are designed to pump wastewater and
industrial wastewater that includes up to 10% by volume of solids. The SKX
Series pumps are designed to pump corrosive liquids along with some solids in
concentrations chemically compatible with 316SS and FKM. The SK & SKX Series
pumps are not explosion-proof. They are not designed to pump volatile or
flammable liquids.
Note: Consult chemical resistance chart for compatibility between pump
materials and liquid before operating pump.
If you have any questions regarding the inspection, disassembly, and assembly or
testing please contact your BJM Pumps® distributor, or Industrial Flow Solutions
Operating LLC.
Industrial Flow Solutions Operating, LLC
104 John W Murphy Drive
New Haven, CT 06513, USA
Phone: [phone]
Fax: [phone]
Information, including pump data sheets and performance curves, is also available on
our web site: www.flowsolutions.com
For assistance with your electric power source, please contact a certified electrician.
Please pay attention to the following alert notifications. They are used to notify
operators and maintenance personnel to pay special attention to procedures, to avoid
causing damage to the equipment, and to avoid situations that could be dangerous to
personnel.
NOTE: Instructions to aid in installation, operation, and maintenance or which
clarify a procedure.
Immediate hazards that WILL result in severe personal injury or
death. These instructions describe the procedure required and the injury which will
result from failure to follow the procedure.
Hazards or unsafe practices that COULD result in severe personal
injury or death. These instructions describe the procedure required, and the injury which
could result from failure to follow the procedure.
Hazards or unsafe practices which COULD result in personal injury
or product or property damage. These instructions describe the procedure required and
the possible damage which could result from failure to follow the procedure.

5
SAFETY
Pump installations are seldom identical. Each installation and application can vary due
to many different factors. It is the owner/service mechanics responsibility to repair,
service, and test to ensure that the pump integrity is not compromised according to this
manual.
Risk of electric shock – this pump has not been investigated for use
in swimming pool areas.
Do not pump flammable, inflammable or volatile liquids. Death
or serious injury will result.
Before attempting to open or service the pump:
1) Familiarize yourself with this manual.
2) Unplug or disconnect the pump power cable to ensure that the pump will remain
inoperative.
3) Allow the pump to cool if overheated.
Do not operate the pump with a worn or damaged electric power
cable. Death or serious injury could occur.
Never attempt to alter the length or repair any power cable with a
splice. The pump motor and pump motor and cable must be completely waterproof.
Damage to the pump or personal injury may result from alterations.
After the pump has been installed, make sure that the pump and all
piping are secure before operation.
Do not lift the pump by the power cable piping or discharge hose.
Attach proper lifting equipment to the lifting handle (or lifting rings) fitted to the pump. Do
not suspend the pump by the power cable.
Obtain the services of a qualified electrician to troubleshoot, test
and/or service the electrical components of this pump.
Pumps and related equipment must be installed and operated
according to all national, local and industry standards.

6
INSPECTION
Review all safety information before servicing pump.
The following are recommended installation practices/procedures for the pump. If there
are questions in regards to your specific application, contact your local BJM Pumps
distributor or BJM Pumps, LLC.
PRE-INSTALLATION INSPECTION
1) Check the pump for damage that may have occurred during shipment.
2) Inspect the pump for any cracks, dents, damaged threads, etc.
3) Check power cord (and Seal Minder® cord, if installed) for any cuts or damage.
4) Check for, and tighten any hardware that appears loose.
5) Carefully read all tags, decals and markings on the pump.
6) Important: Always verify that the pump nameplate amps, voltage, phase, and HP
ratings match your control panel and power supply.
Warranty does not cover damage caused by connecting pumps and controls to an
incorrect power source (voltage/phase supply).
Record the model numbers and serial numbers from the pumps and control panel on
the front of this instruction manual for future reference. Give it to the owner or affix it to
the control panel when finished with the installation.
If anything appears to be abnormal, contact your BJM Pumps® distributor or
Industrial Flow Solutions Operating, LLC. If damaged, the pump may need to be
repaired before use. Do not install or use the pump until appropriate action has been
taken.
Industrial Flow Solutions Operating, LLC Recommended Storage Procedures
Storage Environment
The storage environment must be between 40°F - 120°F. DO NOT allow the
pump to freeze.
The pump must be stored in a dry location
Avoid storing the pump in direct sunlight
For Storage Periods of 3 Years or Less
Rotate the impeller shaft by hand every 6 months and again prior to start up
oKeeps seal faces from sticking
oKeeps bearing grease from settling
Check the oil in seal chambers prior to startup to ensure oil is moisture free and
has not broken down.
Megger the motor prior to startup. The reading should be above 100 MΩ.

7
Remove the air check screw on the motor housing. Using an air compressor,
pressurize the motor chamber to 13 psi and check for leaks using a spray bottle.
Repeat this procedure to check the seal chamber for leaks.
Inspect the power cable for any damage.
For Storage Periods longer than 3 Years
Disassemble the pump and replace all of the O-rings, the Mechanical Seal, Seal
Chamber Oil, and the Lip Seal. Repack the Bearings.
Remove the air check screw on the motor housing. Using an air compressor,
pressurize the motor chamber to 13 psi and check for leaks using a spray bottle.
Repeat this procedure to check the seal chamber for leaks.
Rotate the impeller shaft by hand prior to startup.
Lubrication:
No additional lubrication is necessary. The shaft seal and bearings are fully lubricated
from the factory. Seal oil should be checked once per year. See table: Oil Fill Quantity /
Type.

8
OIL FILL QUANTITY/TYPE
OIL IN SEAL CHAMBER
MODEL
U.S. FL. OZ.
CC.
TYPE OF OIL
SK750C
7.8
230
ISO 32 NSF Food Grade Mineral Oil
SK750C-3
7.8
230
ISO 32 NSF Food Grade Mineral Oil
SK1500C
7.8
230
ISO 32 NSF Food Grade Mineral Oil
SK08C
7.8
230
ISO 32 NSF Food Grade Mineral Oil
SK08C-3
7.8
230
ISO 32 NSF Food Grade Mineral Oil
SK15C
7.8
230
ISO 32 NSF Food Grade Mineral Oil
SK22C
11.8
350
ISO 32 NSF Food Grade Mineral Oil
SK37C
11.8
350
ISO 32 NSF Food Grade Mineral Oil
SK55C
84.5
2500
ISO 32 NSF Food Grade Mineral Oil
SK75C
84.5
2500
ISO 32 NSF Food Grade Mineral Oil
SK110C
87.9
2600
ISO 32 NSF Food Grade Mineral Oil
SK150C
87.9
2600
ISO 32 NSF Food Grade Mineral Oil
OIL IN SEAL CHAMBER
MODEL
U.S. FL. OZ.
CC.
TYPE OF OIL
SKX750CSS
10.1
300
ISO 32 NSF Food Grade Mineral Oil
SKX750CSS-3
10.1
300
ISO 32 NSF Food Grade Mineral Oil
SKX1500CSS
10.1
300
ISO 32 NSF Food Grade Mineral Oil
SKX08CSS
10.1
300
ISO 32 NSF Food Grade Mineral Oil
SKX08CSS-3
10.1
300
ISO 32 NSF Food Grade Mineral Oil
SKX15CSS
10.1
300
ISO 32 NSF Food Grade Mineral Oil
SKX22CSS
13.5
400
ISO 32 NSF Food Grade Mineral Oil
SKX37CSS
13.5
400
ISO 32 NSF Food Grade Mineral Oil
SKX55CSS
84.5
2500
ISO 32 NSF Food Grade Mineral Oil
SKX75CSS
84.5
2500
ISO 32 NSF Food Grade Mineral Oil
SKX110CSS
87.9
2600
ISO 32 NSF Food Grade Mineral Oil
SKX150CSS
87.9
2600
ISO 32 NSF Food Grade Mineral Oil
Note: EPDM seals will use Propylene glycol instead of Shell FM32 oil
PUMP INSTALLATION
SK & SKX Series pumps have been evaluated for use with water or water based
solutions with some solids. Please contact the manufacturer for additional information.
The Shredder pumps (1 and 2 HP) are not designed to pump unscreened solids which
could contain matter such as bunched paper towels, feminine napkins, tampon
applicators, etc. This type of debris can clog the pump & prevent it from operating
properly. The BJM Pumps® Shredder Pumps (7.5 HP and larger) are designed to
handle unscreened sewage.

9
Risk of electric shock. Pump models; SK750C, SK750C-3,
SKX750CSS & SK750CSS-3 (115v) are supplied with a grounding conductor and
grounding-type attachment plug. All 230V single phase pumps and all three phase
pumps do not come with electric plug connectors. To reduce the risk of electric shock,
be certain that it is connected only to a properly grounded, grounding-type receptacle.
Lifting:
Attach a rope or lifting chain (not included) to the handle (or lifting rings) on the top of
the pump.
Do not lift the pump by the power cable or discharge hose/piping.
Proper lifting equipment (rope/chain) must be used.
POSITIONING THE PUMP
BJM Pumps® SK & SKX Series pumps are designed to operate fully or
partially submerged. Avoid running the pump dry for extended periods of time.
Refer to data sheet for minimum submersion depth for your particular model. Data
sheets can be obtained online at www.flowsolutions.com or by calling Industrial Flow
Solutions Operating, LLC at 860-399-5937. As a general rule, SK and SKX Series SIDE
discharge pumps can pump down to a level above the suction screen. Pumping lower
than screen will permit air to enter the pump and cavitate, lose prime or become air
bound.
Do not run pump dry.
Pump liquid should not exceed a maximum temperature of 104°F.
Never place the pump on loose or soft ground. The pump may sink, preventing
water from reaching the impeller. Place on a solid surface or suspend the pump
with a lifting rope/chain. The SK & SKX Series pumps are provided with a suction
strainer to prevent large solids from clogging the impeller. Any spherical solids
which pass through the strainer should pass through the pump.
For maximum pumping capacity, use the proper size non-collapsible hose or rigid
piping. A check valve may be installed after the discharge to prevent back flow
when the pump is shut off.
Take stand off of pump when using slide rail. Keep stand and reattach when
transporting or handling the pump.

10
PUMP ROTATION
Two ways to check the correct pump rotation:
1. By looking at the impeller; the rotation of the impeller should be counter
clockwise as shown in the picture below.
2. By looking from the top of the pump. Since the impeller cannot be seen, the best
way to check the rotation is to check the kick back motion of the pump when the
pump just starts. The kick back motion of the pump should be counter clockwise
as shown in the picture below.
PUMP OPERATION
This pump is designed to handle dirty water that contains some
solids. It is not designed to pump volatile or flammable liquids. Do not attempt to pump
any liquids which may damage the pump or endanger personnel as a result of pump
failure.

11
Do not operate this pump where explosive vapors or
flammable material exist. Death or Serious injury will result.
TYPICAL MUNICIPAL AND INDUSTRIAL WASTEWATER INTALLATION
NOTE: Maximum recommended starts should not exceed 10 times per hour.
MANUAL OPERATION
All SK & SKX Models are provided with a 33’ (10 m) power cord. NEVER splice the
power cable due to safety and warranty considerations. Always keep the plug end dry.
Note: 230V, single phase and 208V, 230V, 460V & 575V three phase units do not
have a plug and have to be provided separately.
Do not alter the length or repair any power cable with a splice. The
pump motor and cable must be completely waterproof. Damage to the pump or
personal injury may result from alterations.
For manual operation: 115 volt: plug the power cable into any 115 volt grounded
receptacle. 208, 230, 460 & 575 volt: Attach the proper plug, connect directly to the
power source or control box. Check the direction of the rotation. Tilt the pump and start
it. It should twist in the opposite direction of the arrow (on pump). It is recommended
that a Ground Fault Interrupter (GFI) type receptacle (or equivalent) be used.
Single phase pumps always use a three-prong grounded
receptacle. It is recommended that a Ground Fault Interrupter (GFI) type receptacle (or
equivalent) be used.

12
STOPPING
To stop the pump (manual and automatic mode), unplug it from the power source, turn
off the breaker, or turn the power source off (generator).
Typical 3 phase manual control 1

13

14
TYPICAL MUNICIPAL OR INDUSTRIAL WASTEWATER INSTALLATION
NOTE: Maximum recommended starts should not exceed 10 times per hour.
AUTOMATIC OPERATION
Float switches (wired into the pump motor or piggy-back style) are available from the
factory as an option.
Note: 208V, 230V, 460V & 575V pumps do not have a plug installed.
Three phase pumps need a separate control box with float(s) for automatic
operation.
STOPPING
To stop the pump (manual and automatic mode), unplug it from the power source, turn
off the breaker, or turn the power source off (generator).
Typical 3 phase Auto Control 1

15
INTENDED METHODS OF CONNECTION
Use with approved motor control that matches motor input in full
load amperes. “UTILLISER UN DÉMARREAR APPROUVÉ CONVENANT AU
COURANT Á PLEINE CHARGE DU MOTEUR.”
BJM Pumps has been evaluated for use with water or water based solutions. Please
contact the manufacturer for additional information.
SINGLE PHASE WIRING INSTRUCTIONS
FOR YOUR PROTECTION, ALWAYS DISCONNECT PUMP
FROM ITS POWER SOURCE BEFORE HANDLING. Single phase pumps are supplied
with a three prong grounded plug to help protect you against the possibility of electrical
shock. DO NOT UNDER ANY CIRCUMSTANCES REMOVE THE GROUND PIN. The
three prong plug must be inserted into a mating three prong grounded receptacle. IF
the installation does not have such a receptacle it must be changed to the proper type,
wired and grounded in accordance with the National Electrical Code and all applicable
local codes and ordinances.
“Risk of electrical shock” Do not remove power supply cord and
strain relief or connect conduit directly to the pump.
Installation and checking of electrical circuits and hardware should
be performed by a qualified licensed electrician.
THREE PHASE WIRING INSTRUCTIONS
FOR YOUR PROTECTION, ALWAYS DISCONNECT PUMP
FROM ITS POWER SOURCE BEFORE HANDLING.
“Risk of electrical shock” Do not remove power supply cord and
strain relief or connect conduit directly to the pump.
Installation and checking of electrical circuits and hardware should
be performed by a qualified licensed electrician.
To automatically operate a non-automatic three phase pump, a control panel is
required. Follow the instructions provided with the panel to wire the system. For
automatic three phase pumps see automatic three phase wiring diagram.
Before installing a pump, check the pump rotation to insure that wiring has been
connected properly to power source, and that the green lead of power cord (See wiring
diagram), is connected to a valid ground, momentarily energize the pump, observing the

16
directions of kick back due to starting torque. Rotation is correct if kick back is in the
opposite direction of rotation arrow on the pump casing. If rotation is not correct,
switching of any two power leads other than ground will provide the proper rotation.
DO NOT PLACE HANDS IN PUMP SUCTION WHILE CHECKING
MOTOR ROTATION. TO DO SO WILL CAUSE SERVER PERSONAL INJURY.
Three phase pumps have integral motor overload protection. It is recommended that all
three phase pumps using a motor starting device also incorporate motor overload
protection. Pumps must be installed in accordance with the National Electrical Code
and all applicable local codes and ordinances. Pumps are not to be installed in locations
classified as hazardous in accordance with National Electrical Code, ANSI/NFPA 70.
Connect pump to a junction box, outlet box, control box, enclosure with a wiring
compartment that meets NEC and local codes. The provision for supply connection
shall reduce the risk of water entry during temporary, limited submersion and shall
comply with the applicable requirements of the Standard for Enclosures for Electrical
Equipment, UL 50, or the standard for Metallic Outlet Boxes, UL 514A, and the standard
for Motor-Operated Water Pumps. UL 778.
TROUBLE SHOOTING
Disconnect the power source to the pump BEFORE attempting
any type of trouble shooting, service or repair.
PUMP WILL NOT RUN
1. Check power supply (fuses, breaker). Reset power.
2. Blocked impeller. Remove strainer, check and clean.
3. Defective cable or incorrect wiring.
4. Strainer clogged. Check and clean as necessary.
5. Float switch tangled/obstructed. Clean and free float switch from obstruction.
6. Float switch defective. Replace float switch.
7. Pump overheated or temperature of liquid exceeds pump operating
temperature.
Warning: Pump will restart automatically when motor over-heat protection switch
cools.

17
PUMP RUNS BUT DOES NOT DELIVER RATED CAPACITY
1. Discharge line clogged, restricted or hose kinked. Check discharge hose/pipe.
2. Worn impeller and/or suction cover. Inspect and replace as necessary.
3. Pump overloaded due to liquid pumped being too thick.
4. Pumping air. Check liquid level and position of pump.
5. Excessive voltage drops due to long cables.
6. Three phase only; pump running backwards, check rotation.
SERVICING YOUR SUBMERSIBLE PUMP
Pump should be disconnected from the electric power supply before proceeding to do
any service or maintenance.
To service or repair your pump, please contact your local BJM Pumps distributor.
Service should only be performed by a qualified electrician.
MAINTAINING YOUR PUMP
Pump should be disconnected from the electric power supply before proceeding
to do any service or maintenance.
Pump should be inspected at regular intervals.
More frequent inspections are required if the pump is used in a harsh
environment.
Preventative maintenance should be performed to reduce the chance of
premature failure.
Worn impellers and lip seals should be replaced.
Cut or cracked power cords must be replaced. (Never operate a pump with a
cut, cracked or damaged power cord.)
Seal oil should be checked once per year.
Maintenance should always be done when taking a pump out of service before
storage.
The impeller to suction cover clearance should be adjusted to between 0.01” to
0.02” for optimal pumping performance. Shim kits are available if adjustment is
required.
1) Clean pump of dirt and other build up.
2) Check condition of oil around the shaft seals.
3) Check hydraulic parts: check for wear.
4) Inspect power cable. Make sure that it is free of nicks or cuts.

18
BJM Pump Impeller Shimming
To optimize the shredding performance of the SK/SKX/SKG BJM Pumps® model
shredding pumps, and to optimize the hydraulic performance of the S/SX/J/JX/R/RX/
KZN/KB/KZE model pumps, BJM Pumps offers an impeller shim kit. The shims are
designed to go on the shaft behind the impeller to adjust the clearance between the
impeller vane and the suction cover to the target specification of the 0.010 inch to 0.020
inch. Note that given the vortex design, the SV model vortex pumps do not require
shimming of the impeller to gain optimal performance.
Impeller Shimming Procedure
1. Install the impeller on the shaft and snug the retaining nut to keep the impeller in
location with any axial movement on the shaft. Note that some single phase
pumps have impellers that thread onto the shaft.
2. Using a prying bar, make sure the impeller is pulled completely down and that
the bearings or mechanical seals are not pulling the shaft upwards (toward the
motor top cover).
3. Install the suction cover and snug the retaining fasteners.
4. Using an angled set of feeler gauges, measure the clearance between the
impeller and the suction cover. Perform this measurement in various locations
and find the smallest clearance. This will be your minimum starting clearance.
5. Remove the suction cover and the impeller of the pump.
6. Subtract 0.010 inch and 0.020 inch from the minimum starting clearance to gain
your recommended shim height.
7. Select a set of shims that will give you a measurement that fits between your
minimum and maximum calculated shim height. Note that the closer the
clearance is to 0.010 inch, the better the shredding and hydraulic performance of
the pump.
8. Install the selected shims onto the pump shaft. Then, replace the drive key and
the impeller. Install the locking washer and the impeller nut, tightening the nut to
the proper torque.
9. Install the suction cover applying the proper torque to the remaining fasteners.
10. Using the angled set of feeler gauges, recheck the impeller clearance in various
locations. The measurement should fall between the 0.010 inch and 0.020 inch
specification. Caution, to not allow the clearance to be less than 0.010 inch since
this may cause undesirable rubbing of the impeller on the suction cover.
11. Repeat these steps as necessary to gain a clearance between the impeller and
the suction cover to 0.010 inch to 0.020 inch.
CHANGING SEAL OIL
Changing the seal oil in the SK & SKX series pumps is very easy.
1) Make sure that the pump cable is disconnected from the power source.

19
2) Lay the pump down on its side.
3) Remove the screws that hold the bottom plate in place.
4) Remove bottom plate.
5) Remove screws holding the suction cover.
6) Remove the suction cover.
7) Remove the impeller.
8) Remove the inspection screw for the oil chamber (pos#50-08). Pour
out a small sample of the oil. If it is milky white, or contains water, then
the oil and possible, the mechanical seal, should be changed. If an oil
change is needed.
9) Remove the screws that hold the oil chamber cover in place & remove
the oil.
10) Replace the mechanical seal if necessary.
11) Replace the oil.
12) Assemble the pump.

20
EXPLODED VIEW OF SK750C, SKX750CSS
EXPLODED VIEW OF SK 1500C, SKX1500CSS

21