SM50
HYDRAULIC
SUMP PUMP
USER MANUAL
Safety, Operation and Maintenance
© 2014 Stanley Black & Decker, Inc.
New Britain, CT 06053
U.S.A.
52724 2/2015 Ver. 6
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TABLE OF CONTENTS
DECLARATION OF CONFORMITY..........................................................................................................................2
SAFETY SYMBOLS ..................................................................................................................................................4
SAFETY PRECAUTIONS..........................................................................................................................................5
TOOL STICKERS & TAGS........................................................................................................................................6
HOSE TYPES............................................................................................................................................................7
HOSE RECOMMENDATIONS ..................................................................................................................................8
FIGURE 1. TYPICAL HOSE CONNECTIONS.......................................................................................................8
HTMA REQUIREMENTS...........................................................................................................................................9
OPERATION............................................................................................................................................................10
TOOL PROTECTION & CARE................................................................................................................................12
TROUBLESHOOTING ............................................................................................................................................13
SPECIFICATIONS...................................................................................................................................................14
ACCESSORIES.......................................................................................................................................................14
SM59 PARTS ILLUSTRATION................................................................................................................................15
SM50 PARTS LIST..................................................................................................................................................16
UNDERWATER TOOLS DEPTH GUIDELINE.........................................................................................................17
IMPORTANT
To fill out a Product Warranty Validation form, and for information on your warranty,
visit Stanleyhydraulics.com and select the Company tab, Warranty.
(NOTE: The warranty Validation record must be submitted to validate the warranty).
SERVICING: This manual contains safety, operation, and routine maintenance instructions. Stanley Hydraulic Tools
recommends that servicing of hydraulic tools, other than routine maintenance, must be performed by an authorized
and certified dealer. Please read the following warning.
WARNING
SERIOUS INJURY OR DEATH COULD RESULT FROM THE IMPROPER REPAIR OR
SERVICE OF THIS TOOL.
REPAIRS AND / OR SERVICE TO THIS TOOL MUST ONLY BE DONE BY AN
AUTHORIZED AND CERTIFIED DEALER.
For the nearest authorized and certified dealer, call Stanley Hydraulic Tools at the number listed on the back of this
manual and ask for a Customer Service Representative.
SM50 User Manual ◄ 3
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SAFETY SYMBOLS
Safety symbols and signal words, as shown below, are used to emphasize all operator, maintenance and repair ac-
tions which, if not strictly followed, could result in a life-threatening situation, bodily injury or damage to equipment.
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible
injury or death.
This safety alert and signal word indicate an imminently hazardous situation
which, if not avoided, will result in death or serious injury.
DANGER
WARNING
CAUTION
This safety alert and signal word indicate a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
This safety alert and signal word indicate a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
This signal word indicates a potentially hazardous situation which, if not avoid-
ed, may result in property damage.
CAUTION
NOTICE
This signal word indicates a situation which, if not avoided, will result in damage
to the equipment.
This signal word indicates a situation which, if not avoided, may result in dam-
age to the equipment.
IMPORTANT
Always observe safety symbols. They are included for your safety and for the protection of the tool.
LOCAL SAFETY REGULATIONS
Enter any local safety regulations here. Keep these instructions in an area accessible to the operator and mainte-
nance personnel.
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SAFETY PRECAUTIONS
Tool operators and maintenance personnel must always
•
Do not wear loose fitting clothing when operating the
comply with the safety precautions given in this manual
and on the stickers and tags attached to the tool and
hose.
tool. Loose fitting clothing can get entangled with the
tool and cause serious injury.
•
Supply hoses must have a minimum working pres-
sure rating of 2500 psi/175 bar.
These safety precautions are given for your safety. Re-
view them carefully before operating the tool and before
performing general maintenance or repairs.
•
•
Be sure all hose connections are tight.
The hydraulic circuit control valve must be in the
“OFF” position when coupling or uncoupling the tool.
Wipe all couplers clean before connecting. Failure
to do so may result in damage to the quick couplers
and cause overheating. Use only lint-free cloths.
Supervising personnel should develop additional pre-
cautions relating to the specific work area and local
safety regulations. If so, place the added precautions in
the space provided in this manual.
The models SM50 Hydraulic Pump will provide safe and
dependable service if operated in accordance with the
instructions given in this manual. Read and understand
this manual and any stickers and tags attached to the
pump and hoses before operation. Failure to do so could
result in personal injury or equipment damage.
•
Do not operate the tool at oil temperatures above
140 ° F/60 ° C. Operation at higher oil temperatures
can cause operator discomfort and may cause dam-
age to the tool.
•
•
Do not operate a damaged, improperly adjusted, or
incompletely assembled tool.
To avoid personal injury or equipment damage, all
tool repair, maintenance and service must only be
performed by authorized and properly trained per-
sonnel.
•
•
•
•
Do not exceed the rated limits of the tool or use the
tool for applications beyond its design capacity.
•
Operator must start in a work area without bystand-
ers. The operator must be familiar with all prohibited
work areas such as excessive slopes and danger-
ous terrain conditions.
Always keep critical tool markings, such as labels
and warning stickers legible.
•
•
•
Establish a training program for all operators to en-
sure safe operations.
Always replace parts with replacement parts recom-
mended by Stanley Hydraulic Tools.
Do not operate the tool unless thoroughly trained or
under the supervision of an instructor.
Check fastener tightness often and before each use
daily.
Always wear safety equipment such as goggles,
head protection, and safety shoes at all times when
operating the tool.
•
Do not inspect or clean the tool while the hydraulic
power source is connected. Accidental engagement
of the tool can cause serious injury.
•
•
Do not operate this tool without first reading the Op-
eration section of this manual.
Do not install or remove this tool while the hydraulic
power source is connected. Accidental engagement
of the tool can cause serious injury.
•
Never operate the tool near energized transmission
lines. Know the location of buried or covered ser-
vices before starting work.
SM50 User Manual ◄ 5
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TOOL STICKERS & TAGS
CAUTION
52728
SM50 Combined Decal
NOTE:
D A N G E R
D A N G E R
THE INFORMATION LISTED
ON THE STICKERS SHOWN,
MUST BE LEGIBLE AT ALL
TIMES.
1. FAILURE TO USE HYDRAULIC HOSE LABELED AND CER-
D. DO NOT LIFT OR CARRY TOOL BY THE HOSES. DO
NOT ABUSE HOSE. DO NOT USE KINKED, TORN OR
DAMAGED HOSE.
TIFIED AS NON-CONDUCTIVE WHEN USING HYDRAULIC
TOOLS ON OR NEAR ELECTRICAL LINES MAY RESULT IN
DEATH OR SERIOUS INJURY.
3. MAKE SURE HYDRAULIC HOSES ARE PROPERLY CON-
NECTED TO THE TOOL BEFORE PRESSURING SYSTEM.
SYSTEM PRESSURE HOSE MUST ALWAYS BE CON-
NECTED TO TOOL “IN” PORT. SYSTEM RETURN HOSE
MUST ALWAYS BE CONNECTED TO TOOL “OUT” PORT.
REVERSING CONNECTIONS MAY CAUSE REVERSE
TOOL OPERATION WHICH CAN RESULT IN SEVERE
PERSONAL INJURY.
BEFORE USING HOSE LABELEDAND CERTIFIEDAS NON-
CONDUCTIVE ON OR NEAR ELECTRIC LINES BE SURE THE
HOSE IS MAINTAINED AS NON-CONDUCTIVE. THE HOSE
SHOULD BE REGULARLY TESTED FOR ELECTRIC CUR-
RENT LEAKAGE IN ACCORDANCE WITH YOUR SAFETY
DEPARTMENT INSTRUCTIONS.
REPLACE DECALS IF THEY
BECOME WORN OR DAM-
AGED. REPLACEMENTS ARE
AVAILABLE FROM YOUR LO-
CAL STANLEY DISTRIBUTOR.
2. A HYDRAULIC LEAK OR BURST MAY CAUSE OIL INJEC-
TION INTO THE BODY OR CAUSE OTHER SEVERE
PERSONAL INJURY.
4. DO NOT CONNECT OPEN-CENTER TOOLS TO CLOSED-
CENTER HYDRAULIC SYSTEMS. THIS MAY RESULT IN
LOSS OF OTHER HYDRAULIC FUNCTIONS POWERED BY
THE SAME SYSTEMAND/OR SEVERE PERSONAL INJURY.
A. DO NOT EXCEED SPECIFIED FLOW AND PRESSURE
FOR THIS TOOL. EXCESS FLOW OR PRESSURE MAY
CAUSE A LEAK OR BURST.
5. BYSTANDERS MAY BE INJURED IN YOUR WORK AREA.
KEEP BYSTANDERS CLEAR OF YOUR WORK AREA.
B. DO NOT EXCEED RATED WORKING PRESSURE OF
HYDRAULIC HOSE USED WITH THIS TOOL. EXCESS
PRESSURE MAY CAUSE A LEAK OR BURST.
6. WEAR HEARING, EYE, FOOT, HAND AND HEAD PRO-
TECTION.
7. TO AVOID PERSONAL INJURY OR EQUIPMENT DAMAGE,
ALL TOOL REPAIR MAINTENANCE AND SERVICE MUST
ONLY BE PERFORMED BY AUTHORIZED AND PROPERLY
TRAINED PERSONNEL.
C. CHECK TOOL HOSE COUPLERS AND CONNECTORS
DAILY FOR LEAKS. DO NOT FEEL FOR LEAKS WITH
YOUR HANDS. CONTACT WITH A LEAK MAY RESULT
IN SEVERE PERSONAL INJURY.
The safety tag (P/N 15875) at right is
attached to the tool when shipped from
the factory. Read and understand the
safety instructions listed on this tag before
removal. We suggest you retain this tag and
attach it to the tool when not in use.
I M P O R T A N T
I M P O R T A N T
READ OPERATION MANUAL AND
SAFETY INSTRUCTIONS FOR THIS
TOOL BEFORE USING IT.
READ OPERATION MANUAL AND
SAFETY INSTRUCTIONS FOR THIS
TOOL BEFORE USING IT.
USE ONLY PARTS AND REPAIR
PROCEDURES APPROVED BY
STANLEY AND DESCRIBED IN THE
OPERATION MANUAL.
USE ONLY PARTS AND REPAIR
PROCEDURES APPROVED BY
STANLEY AND DESCRIBED IN THE
OPERATION MANUAL.
TAG TO BE REMOVED ONLY BY
TOOL OPERATOR.
TAG TO BE REMOVED ONLY BY
TOOL OPERATOR.
SEE OTHER SIDE
SEE OTHER SIDE
SAFETY TAG P/N 15875 (Shown smaller then actual size)
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HOSE TYPES
The rated working pressure of the hydraulic hose must be equal to or higher than the relief valve setting on the hy-
draulic system. There are three types of hydraulic hose that meet this requirement and are authorized for use with
Stanley Hydraulic Tools. They are:
Certified non-conductive — constructed of thermoplastic or synthetic rubber inner tube, synthetic fiber braid
reinforcement, and weather resistant thermoplastic or synthetic rubber cover. Hose labeled certified non-
conductive is the only hose authorized for use near electrical conductors.
Wire-braided (conductive) — constructed of synthetic rubber inner tube, single or double wire braid reinforce-
ment, and weather resistant synthetic rubber cover. This hose is conductive and must never be used near
electrical conductors.
Fabric-braided (not certified or labeled non-conductive) — constructed of thermoplastic or synthetic rubber in-
ner tube, synthetic fiber braid reinforcement, and weather resistant thermoplastic or synthetic rubber cover. This
hose is not certified non-conductive and must never be used near electrical conductors.
HOSE SAFETY TAGS
To help ensure your safety, the following DANGER tags are attached to all hose purchased from Stanley Hydraulic
Tools. DO NOT REMOVE THESE TAGS.
If the information on a tag is illegible because of wear or damage, replace the tag immediately. A new tag may be
obtained from your Stanley Distributor.
THE TAG SHOWN BELOW IS ATTACHED TO “CERTIFIED NON-CONDUCTIVE” HOSE
D A N G E R
D A N G E R
1. FAILURE TO USE HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE
WHEN USING HYDRAULIC TOOLS ON OR NEAR ELECTRIC LINES MAY RESULT IN
DEATH OR SERIOUS INJURY.
3. DO NOT EXCEED HOSE WORKING PRESSURE OR ABUSE HOSE. IMPROPER USE
OR HANDLING OF HOSE COULD RESULT IN BURST OR OTHER HOSE FAILURE.
KEEP HOSE AS FAR AWAY AS POSSIBLE FROM BODY AND DO NOT PERMIT DIRECT
CONTACT DURING USE. CONTACT AT THE BURST CAN CAUSE BODILY INJECTION
AND SEVERE PERSONAL INJURY.
FOR PROPER AND SAFE OPERATION MAKE SURE THAT YOU HAVE BEEN PROP-
ERLY TRAINED IN CORRECT PROCEDURES REQUIRED FOR WORK ON OR AROUND
ELECTRIC LINES.
4. HANDLE AND ROUTE HOSE CAREFULLY TO AVOID KINKING, ABRASION, CUTTING, OR
CONTACT WITH HIGH TEMPERATURE SURFACES. DO NOT USE IF KINKED. DO NOT
USE HOSE TO PULL OR LIFT TOOLS, POWER UNITS, ETC.
2. BEFORE USING HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE
ON OR NEAR ELECTRIC LINES. WIPE THE ENTIRE LENGTH OF THE HOSE AND FIT-
TING WITH A CLEAN DRY ABSORBENT CLOTH TO REMOVE DIRT AND MOISTURE AND
TEST HOSE FOR MAXIMUM ALLOWABLE CURRENT LEAKAGE IN ACCORDANCE WITH
SAFETY DEPARTMENT INSTRUCTIONS.
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKS ABRASIONS, BULGES, OR DAM-
AGE TO COUPLINGS IF ANY OF THESE CONDITIONS EXIST, REPLACE THE HOSE
IMMEDIATELY. NEVER USE TAPE OR ANY DEVICE TO ATTEMPT TO MEND THE HOSE.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
SEE OTHER SIDE
SEE OTHER SIDE
SIDE 1
SIDE 2
(Shown smaller than actual size)
THE TAG SHOWN BELOW IS ATTACHED TO “CONDUCTIVE” HOSE.
D A N G E R
D A N G E R
1. DO NOT USE THIS HYDRAULIC HOSE ON OR NEAR ELECTRIC LINES. THIS HOSE IS
NOT LABELED OR CERTIFIED AS NON-CONDUCTIVE. USING THIS HOSE ON OR NEAR
ELECTRICAL LINES MAY RESULT IN DEATH OR SERIOUS INJURY.
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKSABRASIONS, BULGES, OR DAMAGE TO
COUPLINGS IF ANY OF THESE CONDITIONS EXIST, REPLACE THE HOSE IMMEDIATELY.
NEVER USE TAPE OR ANY DEVICE TO ATTEMPT TO MEND THE HOSE.
2. FOR PROPER AND SAFE OPERATION MAKE SURE THAT YOU HAVE BEEN PROPERLY
TRAINED IN CORRECT PROCEDURES REQUIRED FOR WORK ON OR AROUND ELEC-
TRIC LINES.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
3. DO NOT EXCEED HOSE WORKING PRESSURE OR ABUSE HOSE. IMPROPER USE OR
HANDLING OF HOSE COULD RESULT IN BURST OR OTHER HOSE FAILURE. KEEP HOSE
AS FAR AWAY AS POSSIBLE FROM BODY AND DO NOT PERMIT DIRECT CONTACT
DURING USE. CONTACT AT THE BURST CAN CAUSE BODILY INJECTION AND SEVERE
PERSONAL INJURY.
4. HANDLE AND ROUTE HOSE CAREFULLY TO AVOID KINKING, CUTTING, OR CONTACT
WITH HIGH TEMPERATURE SURFACES. DO NOT USE IF KINKED. DO NOT USE HOSE TO
PULL OR LIFT TOOLS, POWER UNITS, ETC.
SEE OTHER SIDE
SEE OTHER SIDE
SIDE 1
SIDE 2
(Shown smaller than actual size)
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HOSE RECOMMENDATIONS
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HTMA / EHTMA REQUIREMENTS
HTMA / EHTMA REQUIREMENTS
HTMA
TOOL TYPE
HYDRAULIC SYSTEM REQUIREMENTS
TYPE I
TYPE II
TYPE RR
9-10.5 gpm
(34-40 lpm)
1500 psi
TYPE III
11-13 gpm
(42-49 lpm)
1500 psi
4-6 gpm
7-9 gpm
Flow Range
(15-23 lpm)
1500 psi
(103 bar)
(26-34 lpm)
1500 psi
(103 bar)
Nominal Operating Pressure
(at the power supply outlet)
(103 bar)
(103 bar)
2100-2250 psi
(145-155 bar)
2100-2250 psi
(145-155 bar)
2200-2300 psi
(152-159 bar)
2100-2250 psi
(145-155 bar)
System relief valve setting
(at the power supply outlet)
250 psi
(17 bar)
250 psi
(17 bar)
250 psi
(17 bar)
250 psi
(17 bar)
Maximum back pressure
(at tool end of the return hose)
400 ssu*
400 ssu*
400 ssu*
400 ssu*
Measured at a max. fluid viscosity of:
(82 centistokes) (82 centistokes) (82 centistokes) (82 centistokes)
(at min. operating temperature)
Temperature: Sufficient heat rejection
capacity to limit max. fluid temperature to:
(at max. expected ambient temperature)
140° F
(60° C)
140° F
(60° C)
140° F
(60° C)
140° F
(60° C)
Min. cooling capacity at a temperature
3 hp
5 hp
6 hp
7 hp
difference of between ambient and fluid
temps
(2.24 kW)
40° F
(3.73 kW)
40° F
(5.22 kW)
40° F
(4.47 kW)
40° F
NOTE:
(22° C)
(22° C)
(22° C)
(22° C)
Do not operate the tool at oil temperatures above 140° F (60° C). Operation at higher temperatures can cause operator
discomfort at the tool.
Filter
25 microns
30 gpm
(114 lpm)
25 microns
30 gpm
(114 lpm)
25 microns
30 gpm
(114 lpm)
25 microns
30 gpm
(114 lpm)
Min. full-flow filtration
Sized for flow of at least:
(For cold temp. startup and max.
dirt-holding capacity)
Hydraulic fluid Petroleum based
(premium grade, anti-wear, non-conductive)
Viscosity (at min. and max. operating temps)
100-400 ssu*
100-400 ssu*
(20-82 centistokes)
100-400 ssu*
100-400 ssu*
NOTE:
When choosing hydraulic fluid, the expected oil temperature extremes that will be experienced in service determine the
most suitable temperature viscosity characteristics. Hydraulic fluids with a viscosity index over 140 will meet the requirements
over a wide range of operating temperatures.
*SSU = Saybolt Seconds Universal
CLASSIFICATION
EHTMA
HYDRAULIC SYSTEM
REQUIREMENTS
C
B
D
Flow Range
3.5-4.3 gpm
(13.5-16.5 lpm) (18-22 lpm)
1870 psi
(129 bar)
4.7-5.8 gpm
7.1-8.7 gpm
(27-33 lpm)
1500 psi
9.5-11.6 gpm
(36-44 lpm)
1500 psi
11.8-14.5 gpm
(45-55 lpm)
1500 psi
Nominal Operating Pressure
(at the power supply outlet)
1500 psi
(103 bar)
(103 bar)
(103 bar)
(103 bar)
System relief valve setting
(at the power supply outlet)
2495 psi
(172 bar)
2000 psi
(138 bar)
2000 psi
(138 bar)
2000 psi
(138 bar)
2000 psi
(138 bar)
NOTE: These are general hydraulic system requirements. See tool specification page for tool specific requirements
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OPERATION
PREOPERATION PROCEDURES
CHECK POWER SOURCE
IMPORTANT
1. Using a calibrated flow meter and pressure gauge,
make sure the hydraulic power source develops a
flow of 7–12 gpm/26–45 Ipm at 1000–2000 psi/70–
140 bar.
Never point the hose at bystanders.
4. Turn on the hydraulic power source. Watch for sol-
ids in the liquid being pumped. If solids are exces-
sive, the discharge flow might decrease. If this hap-
pens, stop the pump and check for the cause of the
problem.
2. Make certain that the power source is equipped with
a relief valve set to open at 2100 psi/145 bar maxi-
mum.
3. Make certain that the power source return pressure
does not exceed 250 psi/17 bar.
Under some conditions, the liquid being pumped
might be slowed enough so It can no longer push
particles in the liquid. If this happens, particles can
accumulate in the hose and backup the pumping
chamber, causing further restriction. The impel-
ler then acts as a “grinding wheel which causes
accelerated pump wear. Reduced liquid flow can be
caused by the following:
4. Make sure the trash pump inlet is clear of debris.
Remove any obstruction before operating. Refer to
PUMP CLEANING PROCEDURES.
CONNECT HOSES
1. Wipe all hose couplers with a clean lint free cloth
before making connections.
•
The pump sinks into solids at the bottom of the
hole.
2. Connect the hoses from the hydraulic power source
to the couplers on the trash pump or trash pump
hoses. It is a good practice to connect return hose
first and disconnect it last to minimize or avoid
trapped pressure within the trash pump motor.
•
The end of the outlet hose is too high, causing
an excessive lift height for the column of liquid
being pushed by the trash pump. This slows the
flow of liquid to a level where it can no longer
carry solids out the end of the hose.
NOTE:
If uncoupled hoses are left in the sun, pressure in-
crease inside the hoses might make them difficult to
connect. Whenever possible, connect the free ends
of the hoses together.
•
The flow and pressure of hydraulic fluid to the
pump is too low, which reduces impeller speed.
A 20% decrease in hydraulic fluid flow can re-
duce pump performance by 50%. When operat-
ing at reduced hydraulic flow and pressure, the
end of the outlet hose should not be more than
30 ft/9 m above the liquid.
3. Observe the arrow on the couplers to ensure that the
flow is in the proper direction. The female coupler on
the trash pump is the inlet (pressure) coupler.
5. When pumping is complete, set the hydraulic control
valve to the “OFF” position. Lift the pump from the
work area.
PUMP OPERATION
1. Observe all safety precautions.
NOTE:
COLD WEATHER OPERATION
The SM50 is not designed for use with a suction
pipe inlet. The diameter of the suction screen at the
bottom of the pump provides maximum pump ef-
ficiency. Reducing the size of this inlet will greatly
reduce pump performance.
If the trash pump is to be used during cold weather,
preheat the hydraulic fluid at low power source speed.
When using the normally recommended fluids, fluid
should be at or above 50 °F/10 °C (400 ssu/82 centi-
stokes) before use.
2. Connect a hose fitted with a 3 inch/76.2 mm female
camlock coupler to the pump outlet fitting. Make
sure the fitting is securely tightened. For best perfor-
mance, keep the hose as short as possible and lay
it out to avoid sharp bends or kinks.
Damage to the hydraulic system or pump motor seals
can result from use with fluid that is too viscous or thick.
3. Lower the pump into the liquid to be pumped. Locate
the outlet end of the discharge hose to disperse the
liquid as required. Remove any kinks from the hose
to assure maximum water flow.
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OPERATION
CLEANING THE PUMPING
CHAMBER
Debris such as weeds, sand and other solids may be-
come trapped in the water hose and pumping chamber.
This can reduce pump performance. It is important that
the pumping chamber be kept clean at all times. The
chamber can be cleaned as follows:
1. Remove motor and impeller by removing the two
M12 × 1.75 Hex Head capscrews.
2. Remove all debris from the pump screen.
3. Thoroughly clean the volute and impeller. Do not
remove the impeller unless necessary for repair or
replacement or to remove trapped debris.
4. Assemble the motor and impeller to the volute.
Clean the capscrews and lubricate the threads with
underwater grease before installation.
5. Remove all debris from the hose. Otherwise, solids
will backfill the pump.
SM50 User Manual ◄ 11
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TOOL PROTECTION & CARE
NOTICE
In addition to the Safety Precautions found
in this manual, observe the following for
equipment protection and care.
•
•
Make sure all couplers are wiped clean before con-
nection.
•
•
•
•
•
Always keep critical tool markings, such as warning
stickers and tags legible.
The hydraulic circuit control valve must be in the
“OFF” position when coupling or uncoupling hydrau-
lic tools. Failure to do so may result in damage to
the quick couples and cause overheating of the hy-
draulic system.
Do not use the tool for applications it was not de-
signed for.
Tool repair should be performed by experienced
personnel only.
Make certain that the recommended relief valves
are installed in the pressure side of the system.
•
•
Always store the tool in a clean dry space, safe from
damage or pilferage.
Do not use the tool for applications for which it was
not intended.
Make sure the circuit PRESSURE hose (with male
quick disconnect) is connected to the “IN” port. The
circuit RETURN hose (with female quick disconnect)
is connected to the opposite port. Do not reverse cir-
cuit flow. This can cause damage to internal seals.
•
•
Always replace hoses, couplings and other parts
with replacement parts recommended by Stanley
Hydraulic Tools. Supply hoses must have a mini-
mum working pressure rating of 2500 psi/172 bar.
Do not exceed the rated flow (see Specifications) in
this manual for correct flow rate and model number.
Rapid failure of the internal seals may result.
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TROUBLESHOOTING
If symptoms of poor performance develop, the following chart can be used as a guide to correct the problem.
When diagnosing faults in operation, always make sure the hydraulic power source is supplying the correct hydrau-
lic flow and pressure as listed in the table. Use a flowmeter know to be accurate. Check the flow with the hydraulic
fluid temperature at least 80 °F/27 °C.
PROBLEM
CAUSE
SOLUTION
Pump will not start.
No hydraulic fluid flow or pressure. Turn on power unit and check that 7–12
gpm/26–45 lpm at 1000-2000 psi/70–140
bar is available at the pump.
Defective couplers.
Check the couplers. Replace if necessary.
Impeller jammed with debris.
Clean the pumping chamber as described in
the Maintenance section in this manual.
Impeller rubbing against wear
plates.
Check and adjust the impeller clearance as
described in the Service Manual.
Defective hydraulic motor.
Repair or replace motor.
Poor pump performance.
Hydraulic flow reversed.
Check that the hoses are correctly
connected to the pump motor ports. The
female coupler should be connected to the
“IN” port. The return fluid must never flow
through a reversing valve.
Improper hydraulic fluid flow.
Check that 7–12 gpm/26-45 lpm at 1000–
2000 psi/70–140 bar is available at the trash
pump. A 20% decrease in flow can result in
a 50% decrease in pump performance.
Pump submersed in sediment.
Trash pump inlet restricted.
Lift the pump from the bottom of the hole or
chamber. Use a flat support under the pump
if necessary.
Remove suction screen and thoroughly
clean. Reassemble.
Discharge hose kinked or
restricted.
Straighten the hose. If the hose must bend
at the top of the hole, use a piece of split
rigid conduit with large diameter of the
expanded hose. This keeps the hose from
kinking.
Discharge hose too small.
Water lift too high.
Use a 3-inch diameter fire hose.
Lower the outlet end of the discharge hose.
Increase hydraulic flow (12 gpm/45 lpm
max).
Impeller worn or damaged.
Check impeller for damage and excessive
wear. Replace if necessary.
Pump not matched to application
Obtain higher capacity pump.
Hose used on suction side of
pump.
Remove. Use no plumbing on suction side
of pump.
Poor pump performance
with excessive wear.
Too many solids in the water.
Water speed out of the hose may
be too slow, therefore hose and
pump load up with solids.
Reduce solids content. Increase pump
speed.
SM50 User Manual ◄ 13
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SPECIFICATIONS
Capacity.........................................................................................................................................500 gpm/1890 lpm
Weight .....................................................................................................................................................21 lbs/9.5 kg
Length................................................................................................................................................ 10.5 in./26.7 cm
Width .................................................................................................................................................... 10 in./25.4 cm
Pressure............................................................................................................................1000-2000 psi/70–140 bar
Flow Range ................................................................................................................................7–12 gpm/26-45 lpm
Maximum Flow ....................................................................................................................................12 gpm/45 lpm
Porting...................................................................................................................................................–8SAE O-ring
Connect Size and Type ......................................................................3/8 in. Flush Face Quick Disconnect Couplers
Discharge Diameter.................................................................................................................................. 3 in./7.6 cm
Sound Pressure..................................................................................................................................<85 dBA @ 1 m
ACCESSORIES
Description
Part No.
Adapter, 3 in. NPT/3 in. Camlock Male..............................................................................................................52720
Lay-Flat Discharge Hose, 3 in. × 25 ft with Camlock Fittings ............................................................................56761
Adapter, 3 in. Femaile Camlock × Male Fire Hose (nh) Thread ........................................................................15248
14 ► SM50 User Manual
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SM50 PARTS ILLUSTRATION
65132 MOTOR ASSEM-
BLY USED ON SUMP
PUMPS WITH SERIAL
NUMBERS 600 AND
ABOVE, THIS MOTOR
CAN ONLY BE PUR-
CHASED AS AN ASSEM-
BLY. INDIVIDUAL PARTS
ARE NOT AVAILABLE.
SM50 User Manual ◄ 15
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SM50 PARTS LIST
ITEM
NO.
PART
NO.
QTY
1
DESCRIPTION
1
2
3
4
5
6
7
52669
52720
13815
56763
00635
52671
31032
VOLUTE
1
CAMLOCK COUPLING 3 IN.
HSHCS 5/16 – 18 × 3/4
WASHER
1
1
1
KEY
1
IMPELLER
1*
SHIM .020 (* NOTE QTY WHEN
DISASSEMBLING TOOL)
8
9
31033
31034
1*
1*
SHIM .010 (* NOTE QTY WHEN
DISASSEMBLING TOOL)
SHIM .005 (* NOTE QTY WHEN
DISASSEMBLING TOOL)
10
11
12
13
14
52716
65132
52728
52718
58857
1
1
1
2
1
V-RING
MOTOR ASSEMBLY
SM50 COMBINED STICKER
HHCS M12-1.75 X 30MM
MALE FLUSH FACE COUPLER
NOSE 3/8 NPT
15
58856
1
FEMALE FLUSH FACE COUPLER
BODY 3/8 NPT
58718
52758
66398
1
1
1
COUPLER SET (MALE & FEMALE)
REPAIR KIT
SEAL KIT FOR 65132 MOTOR
(SERIAL # 600 AND ABOVE)
NOTE:
ALL SM50 PUMPS WITH A SERIAL NUMBER OF 600 AND
ABOVE, COME SHIPPED WITH P/N 65132 MOTOR ASSEMBLY
INSTALLED. A SEPARATE SEAL KIT 66398 IS AVAILABLE FOR
THIS MOTOR.
IF YOU HAVE A SM50 WITH SERIAL # 599 AND BELOW CONTACT
STANLEY CUSTOMER SERVICE FOR PARTS.
16 ► SM50 User Manual
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UNDERWATER TOOLS DEPTH GUIDELINE
UNDERWATER MODELS ONLY
Operation Overview
CAUTION
Percussive
Tools: Breakers,
Hammer Drills and
Chipping Hammers
Rotational
Tools: Grinders,
Saws, Chain Saws
DO NOT USE HYDRAULIC TOOLS UNDER-
WATER THAT ARE NOT DESIGNATED AS
AN “UNDERWATER” MODEL, OR THIS
WILL RESULT IN DAMAGE TO THE TOOL.
Max Depth: 1000' -
Reference hose
sizing guide below
Max Depth: 500' -
limitations due to
accumulator PSI
max (increase 40
PSI for every 100')
For underwater hydraulic tools the applications are
broken down into four quadrants depending on
type of tool and method of operation.
Tools: Breakers,
Hammer Drills and
Chipping Hammers
Tools: Grinders,
Saws, Chain Saws
The types of tools are percussive and rotational,
each with different characteristics allowing for dif-
ferent depth operation. With percussive tools, the
nitrogen accumulator PSI must counter the in-
crease in ambient pressure found at lower depths.
Since there is a maximum PSI for percussive tools
they are limited to certain depths. Rotational tools
do not have accumulators and thus capable of
deeper depths.
Max Depth: 1000' -
Reference hose
sizing guide below
Max Depth: 500' -
limitations due to
accumulator PSI
max (increase 40
PSI for every 100')
The methods are broken into diver operated or
remote operated vehicle (ROV). ROV's can reach
lower depths and with an on-board hydraulic
power source that is depth compensated, can
operate hydraulic tools at depths of thousands of
feet. ROV operation is still limited to the tool, for
example a percussive tool has the same depth
limitation whether ROV or diver operated.
Recommended Hose Diameters
Depth (ft)
100
8 GPM
5/8”
3/4”
1”
12 GPM
5/8”
300
1”
600
1”
1000
1”
1-1/4”
SM50 User Manual ◄ 17
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Stanley Hydraulic Tools
3810 SE Naef Road
Milwaukie, Oregon 97267-5698 USA
(503) 659-5660 / Fax (503) 652-1780
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