Stanley SM21 User manual

© 2014 STANLEY Black & Decker, Inc.
New Britain, CT 06053
U.S.A.
72421 10/2017 Ver. 10
USER MANUAL
Safety, Operation and Maintenance
SM21
HYDRAULIC
SUMP PUMP

2 ► SM21 User Manual
DECLARATION OF CONFORMITY
ÜBEREINSTIMMUNGS-ERKLARUNG
DECLARATION DE CONFORMITE CEE
DECLARACION DE CONFORMIDAD
DICHIARAZIONE DI CONFORMITA
Hydraulic Tools
______________________________________________________________________
I, the undersigned:
Ich, der Unterzeichnende:
Je soussigné:
El abajo firmante:
lo sottoscritto:
Weisbeck, Andy
Surname and First names/Familiennname und Vornamen/Nom et prénom/Nombre y apellido/Cognome e nome
hereby declare that the equipment specified hereunder:
bestätige hiermit, daß erklaren Produkt genannten Werk oder Gerät:
déclare que l’équipement visé ci-dessous:
Por la presente declaro que el equipo se especifica a continuación:
Dichiaro che le apparecchiature specificate di seguito:
1. Category: Submersible Pump, Hydraulic
Kategorie:
Catégorie:
Categoria:
Categoria:
2. Make/Marke/Marque/Marca/Marca Stanley
3. Type/Typ/Type/Tipo/Tipo: SM2151101
4. Serial number of equipment:
Seriennummer des Geräts:
Numéro de série de l’équipement:
Numero de serie del equipo:
Matricola dell´attrezzatura:
All
Has been manufactured in conformity with
Wurde hergestellt in Übereinstimmung mit
Est fabriqué conformément
Ha sido fabricado de acuerdo con
E’ stata costruita in conformitá con
Directive/Standards
Richtlinie/Standards
Directives/Normes
Directriz/Los Normas
Direttiva/Norme
No.
Nr
Numéro
No
n.
Approved body
Prüfung durch
Organisme agréé
Aprobado
Collaudato
EN
Machinery Directive
809:1998+A1:2009
2006/42/EC:2006
Self
Self
5. Special Provisions: None
Spezielle Bestimmungen:
Dispositions particulières:
Provisiones especiales:
Disposizioni speciali:
6. Representative in the Union: Patrick Vervier, Stanley Dubuis 17-19, rue Jules Berthonneau-BP 3406 41034 Blois Cedex, France.
Vertreter in der Union/Représentant dans l’union/Representante en la Union/Rappresentante presso l’Unione
Done at/Ort/Fait à/Dado en/Fatto a Stanley Hydraulic Tools, Milwaukie, Oregon USA Date/Datum/le/Fecha/Data 1-5-11
Signature/Unterschrift/Signature/Firma/Firma
Position/Position/Fonction/Cargo/Posizione Director of Product Development
DECLARATION OF CONFORMITY
Test Report #7072016SM21

SM21 User Manual ◄ 3
TABLE OF CONTENTS
SERVICING: This manual contains safety, operation and routine maintenance instructions. STANLEY Infrastructure
recommends that servicing of hydraulic tools, other than routine maintenance, must be performed by an authorized
and certied dealer. Please read the following warning.
To ll out a product warranty validation form, and for information on your warranty,
visit www.stanleyinfrastructure.com and select the Company tab > Warranty.
Note: The warranty validation record must be submitted to validate the warranty.
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 certied dealer, call STANLEY Infrastructure at [phone] and ask for a Customer Service Representative.
SAFETY SYMBOLS ..................................................................................................................................................4
SAFETY PRECAUTIONS..........................................................................................................................................5
TOOL STICKERS & TAGS ........................................................................................................................................6
HOSE TYPES............................................................................................................................................................7
HTMA / EHTMA REQUIREMENTS ...........................................................................................................................9
OPERATION............................................................................................................................................................10
TOOL PROTECTION & CARE ................................................................................................................................12
TROUBLESHOOTING ............................................................................................................................................13
SPECIFICATIONS...................................................................................................................................................14
ACCESSORIES.......................................................................................................................................................14
SM21 PARTS ILLUSTRATION ................................................................................................................................15
UNDERWATER TOOLS DEPTH GUIDELINE.........................................................................................................17

4 ► SM21 User Manual
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
maintenance personnel.
Safety symbols and signal words, as shown below, are used to emphasize all operator, maintenance and repair
actions 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.
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 avoided,
may result in property damage.
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 damage
to the equipment.
SAFETY SYMBOLS

SM21 User Manual ◄ 5
Tool operators and maintenance personnel must always
comply with the safety precautions given in this manual
and on the stickers and tags attached to the tool and
hose.
These safety precautions are given for your safety.
Review them carefully before operating the tool and
before performing general maintenance or repairs.
Supervising personnel should develop additional
precautions relating to the specic work area and local
safety regulations. If so, place the added precautions in
the space provided in this manual.
The models SM21 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.
• Operator must start in a work area without
bystanders. The operator must be familiar with all
prohibited work areas such as excessive slopes and
dangerous terrain conditions.
• Establish a training program for all operators to
ensure safe operations.
• Do not operate the tool unless thoroughly trained or
under the supervision of an instructor.
• 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 rst reading the
Operation section.
• 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
services before starting work.
• Do not wear loose tting clothing when operating the
tool. Loose tting clothing can get entangled with the
tool and cause serious injury.
• Supply hoses must have a minimum working
pressure rating of 2500 psi/175 bar.
• 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.
• 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
damage to the tool.
• Do not operate a damaged, improperly adjusted, or
incompletely assembled tool.
• Do not put hand under volute while the pump is
running.
• To avoid personal injury or equipment damage,
all tool repair, maintenance and service must only
be performed by authorized and properly trained
personnel.
• Do not exceed the rated limits of the tool or use the
tool for applications beyond its design capacity.
• Always keep critical tool markings, such as labels
and warning stickers legible.
• Always replace parts with replacement parts
recommended by STANLEY.
• Check fastener tightness often and before each use
daily.
• Do not point water discharge at bystanders.
SAFETY PRECAUTIONS

6 ► SM21 User Manual
SAFETY TAG P/N 15875 (Shown smaller then actual size)
DANGERDANGER
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.
TAG TO BE REMOVED ONLY BY
TOOL OPERATOR.
SEE OTHER SIDE
1. FAILURE TO USE HYDRAULIC HOSE LABELED AND CER-
TIFIED AS NON-CONDUCTIVE WHEN USING HYDRAULIC
TOOLS ON OR NEAR ELECTRICAL LINES MAY RESULT IN
DEATH OR SERIOUS INJURY.
BEFORE USING HOSE LABELED AND CERTIFIED AS 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.
2. A HYDRAULIC LEAK OR BURST MAY CAUSE OIL INJEC-
TION INTO THE BODY OR CAUSE OTHER SEVERE
PERSONAL INJURY.
A. DO NOT EXCEED SPECIFIED FLOW AND PRESSURE
FOR THIS TOOL. EXCESS FLOW OR PRESSURE MAY
CAUSE A LEAK OR BURST.
B. DO NOT EXCEED RATED WORKING PRESSURE OF
HYDRAULIC HOSE USED WITH THIS TOOL. EXCESS
PRESSURE MAY CAUSE A LEAK OR BURST.
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.
IMPORTANT
D. DO NOT LIFT OR CARRY TOOL BY THE HOSES. DO
NOT ABUSE HOSE. DO NOT USE KINKED, TORN OR
DAMAGED HOSE.
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.
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 SYSTEM AND/OR SEVERE PERSONAL INJURY.
5. BYSTANDERS MAY BE INJURED IN YOUR WORK AREA.
KEEP BYSTANDERS CLEAR OF YOUR WORK AREA.
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.
IMPORTANT
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.
TAG TO BE REMOVED ONLY BY
TOOL OPERATOR.
SEE OTHER SIDE
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.
NOTE:
THE INFORMATION LISTED
ON THE STICKERS SHOWN,
MUST BE LEGIBLE AT ALL
TIMES.
REPLACE DECALS IF
THEY BECOME WORN OR
DAMAGED. REPLACEMENTS
ARE AVAILABLE FROM
YOUR LOCAL STANLEY
DISTRIBUTOR.
D
30 LPM @ 138 BAR
EHTMA CATEGORY
11207
Circuit Type D Sticker
28788
Manual Sticker
28322
CE Sticker (CE Only) 28786
Coupler Sticker
74763
Name Tag
TOOL STICKERS & TAGS
TG1 TG3
TG2

SM21 User Manual ◄ 7
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:
Certied non-conductive — constructed of thermoplastic or synthetic rubber inner tube, synthetic ber braid
reinforcement, and weather resistant thermoplastic or synthetic rubber cover. Hose labeled certied 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 certied or labeled non-conductive) — constructed of thermoplastic or synthetic rubber in-
ner tube, synthetic ber braid reinforcement, and weather resistant thermoplastic or synthetic rubber cover. This
hose is not certied 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. 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
THE TAG SHOWN BELOW IS ATTACHED TO “CONDUCTIVE” HOSE.
(Shown smaller than actual size)
SIDE 1
DANGER
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.
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.
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.
SEE OTHER SIDE
SIDE 2
DO NOT REMOVE THIS TAG
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, 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.
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
DANGER
DO NOT REMOVE THIS TAG
DANGER
(Shown smaller than actual size)
SIDE 2
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKS ABRASIONS, 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.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
DANGER
DO NOT REMOVE THIS TAG
DANGER
SIDE 1
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.
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.
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.
DO NOT REMOVE THIS TAG
DANGER
SEE OTHER SIDE SEE OTHER SIDE
HOSE TYPES

8 ► SM21 User Manual
Oil Flow Hose Lengths Inside Diameter USE
(Press/Return)
Min. Working Pressure
GPM LPM FEET METERS INCH MM PSI BAR
Certied Non-Conductive Hose - Fiber Braid - for Utility Bucket Trucks
4-9 15-34 up to 10 up to 3 3/8 10 Both 2250 155
Conductive Hose - Wire Braid or Fiber Braid -DO NOT USE NEAR ELECTRICAL CONDUCTORS
4-6 15-23 up to 25 up to 7.5 3/8 10 Both 2500 175 4-6 15-23 26-100 7.5-30 1/2 13 Both 2500 175
5-10.5 19-40 up to 50 up to 15 1/2 13 Both 2500 175 5-10.5 19-40 51-100 15-30 5/8 16 Both 2500 175 5-10.5 19-40 100-300 30-90 5/8 16 Pressure 2500 175
3/4 19 Return 2500 175
10-13 38-49 up to 50 up to 15 5/8 16 Both 2500 175 10-13 38-49 51-100 15-30 5/8 16 Pressure 2500 175
3/4 19 Return 2500 175
10-13 38-49 100-200 30-60 3/4 19 Pressure 2500 175
1 25.4 Return 2500 175
13-16 49-60 up to 25 up to 8
5/8 16 Pressure 2500 175 3/4 19 Return 2500 175
13-16 49-60 26-100 8-30
3/4 19 Pressure 2500 175
1 25.4 Return 2500 175
Figure 1. Typical Hose Connections
Tool to Hydraulic Circuit Hose Recommendations The chart to the right shows recommended minimum hose diameters for various hose lengths based on gallons per minute (gpm)/ liters per minute (lpm). These recommenda- tions are intended to keep return line pressure (back pressure) to a minimum acceptable lev- el to ensure maximum tool performance. This chart is intended to be used for hydrau- lic tool applications only based on STANLEY tool operating requirements and should not be used for any other applications. All hydraulic hose must have at least a rated minimum working pressure equal to the maxi- mum hydraulic system relief valve setting. All hydraulic hose must meet or exceed specications as set forth by SAE J517.
PRESSURE
RETURN
<<< FLOW
FLOW >>>
HOSE RECOMMENDATIONS

SM21 User Manual ◄ 9
Flow Range
Nominal Operating Pressure
(at the power supply outlet)
System relief valve setting
(at the power supply outlet)
Maximum back pressure
(at tool end of the return hose)
(at min. operating temperature)
(at max. expected ambient temperature)
Min. cooling capacity at a temperature
temps
NOTE:
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
(For cold temp. startup and max.
dirt-holding capacity)
(premium grade, anti-wear, non-conductive)
Viscosity (at min. and max. operating temps)
NOTE:
over a wide range of operating temperatures.
*SSU = Saybolt Seconds Universal
4-6 gpm 7-9 gpm 9-10.5 gpm 11-13 gpm
(15-23 lpm) (26-34 lpm) (34-40 lpm) (42-49 lpm)
1500 psi 1500 psi 1500 psi 1500 psi
(103 bar) (103 bar) (103 bar) (103 bar)
2100-2250 psi 2100-2250 psi 2200-2300 psi 2100-2250 psi
(145-155 bar) (145-155 bar) (152-159 bar) (145-155 bar)
250 psi 250 psi 250 psi 250 psi
(17 bar) (17 bar) (17 bar) (17 bar)
400 ssu* 400 ssu* 400 ssu* 400 ssu*
(82 centistokes) (82 centistokes) (82 centistokes) (82 centistokes)
140° F 140° F 140° F 140° F
(60° C) (60° C) (60° C) (60° C)
3 hp 5 hp 6 hp 7 hp
(2.24 kW) (3.73 kW) (5.22 kW) (4.47 kW)
40° F 40° F 40° F 40° F
(22° C) (22° C) (22° C) (22° C)
25 microns 25 microns 25 microns 25 microns
30 gpm 30 gpm 30 gpm 30 gpm
(114 lpm) (114 lpm) (114 lpm) (114 lpm)
100-400 ssu* 100-400 ssu* 100-400 ssu* 100-400 ssu*
(20-82 centistokes)
HTMA
HYDRAULIC SYSTEM REQUIREMENTS
NOTE:
TOOL TYPE
HTMA / EHTMA REQUIREMENTS
TYPE I TYPE II TYPE III
TYPE RR
BCD
3.5-4.3 gpm 4.7-5.8 gpm 7.1-8.7 gpm 9.5-11.6 gpm 11.8-14.5 gpm
(13.5-16.5 lpm) (18-22 lpm) (27-33 lpm) (36-44 lpm) (45-55 lpm)
1870 psi 1500 psi 1500 psi 1500 psi 1500 psi
(129 bar) (103 bar) (103 bar) (103 bar) (103 bar)
EHTMA
HYDRAULIC SYSTEM
REQUIREMENTS
CLASSIFICATION
Flow Range
Nominal Operating Pressure
(at the power supply outlet)
System relief valve setting
(at the power supply outlet) 2495 psi 2000 psi 2000 psi 2000 psi 2000 psi
(172 bar) (138 bar) (138 bar) (138 bar) (138 bar)
.
HTMA / EHTMA REQUIREMENTS

10 ► SM21 User Manual
PREOPERATION PROCEDURES
CHECK POWER SOURCE
1. Using a calibrated ow meter and pres sure gauge,
make sure the hydraulic power source develops a
ow of 4-9 gpm/15-34 Ipm at 1500-2000 psi/105-
140 bar.
2. Make certain that the power source is equipped with
a relief valve set to open at 2100-2250 psi/145-155
bar maximum.
3. Make certain that the power source return pressure
does not exceed 250 psi/17 bar.
4. Make sure the pump inlet screen is clear of debris
and the outlet hose is clean. 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.
2. Connect the hoses from the hydraulic power source
to the couplers on the sump pump or sump pump
hoses. It is a good practice to connect return hose
rst and disconnect it last to minimize or avoid
trapped pressure within the trash pump motor.
NOTE:
If uncoupled hoses are left in the sun, pressure
increase inside the hoses might make them difcult
to connect. Whenever possible, connect the free
ends of the hoses together.
3. Observe the arrow on the couplers to ensure that the
ow is in the proper direc tion. The female coupler on
the sump pump is the inlet (pressure) coupler.
PUMP OPERATION
1. Observe all safety precautions.
NOTE:
The SM21 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ciency. Reducing the size of this inlet will greatly
reduce pump performance.
2. Connect a hose tted with a 2-1/2 inch/63.5 mm male
pipe end to the pump outlet tting. Make sure the
tting is securely tightened. For best performance,
keep the hose as short as possible and lay it out to
avoid sharp bends or kinks.
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 ow.
4.
Never point the hose at bystanders.
Turn on the hydraulic power source. Watch for solids
in the liquid being pumped. If solids are excessive,
the discharge ow might decrease. If this happens,
stop the pump and check for the cause of the
problem.
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 impeller
then acts as a “grinding wheel” which causes
acceler ated pump wear. Reduced liquid ow can be
caused by the following:
a. The pump sinks into solids at the bottom of the
hole.
b. The end of the outlet hose is too high, causing
an excessive lift height for the column of liquid
being pushed by the sump pump. This slows the
ow of liquid to a level where it can no longer
carry solids out the end of the hose.
c. The ow and pressure of hydraulic uid to the
pump is too low, which reduces impeller speed. A
20% de crease in hydraulic uid ow can reduce
pump performance by 50%. When operating at
reduced hydraulic ow and pressure, the end of
the outlet hose should not be more than 40 ft/12
m above the liquid.
5. When pumping is complete, set the hydraulic control
valve to the “OFF” position. Lift the pump from the
work area.
NOTE:
Always keep water speed as fast as possible during
operation. This helps to pump solids through the
hose and keeps the pump clean for longer life.
COLD WEATHER OPERATION
If the sump pump is to be used during cold weather,
preheat the hydraulic uid at low power source
speed. When using the nor mally recommended uids,
uid should be at or above 50 °F/10 °C (400 ssu/82
centistokes) before use.
Damage to the hydraulic system or pump motor seals
OPERATION

SM21 User Manual ◄ 11
OPERATION
can result from use with uid that is too viscous or thick.
MAINTENANCE
CLEANING THE PUMPING CHAMBER
Debris such as weeds, sand and other solids may
become 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 seven
5/16 -18 capscrews (item 14).
2. Thoroughly clean the volute and impeller. Do not
remove the impeller unless necessary for repair or
replacement or to remove trapped debris.
3. Remove all debris from the pump screen by
removing the four 5/16 -18 capscrews (item 18).
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 backll the pump.

12 ► SM21 User Manual
• Make sure all couplers are wiped clean before
connection.
• The hydraulic circuit control valve must be in
the “OFF” position when coupling or uncoupling
hydraulic tools. Failure to do so may result in damage
to the quick couplers and cause overheating of the
hydraulic system.
• Always store the tool in a clean dry space, safe from
damage or pilferage.
• 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
circuit ow. This can cause damage to internal seals.
• Always replace hoses, couplings and other parts
with replacement parts recommended by STANLEY.
Supply hoses must have a minimum working
pressure rating of 2500 psi/172 bar.
• Do not exceed the rated ow or pressure. Refer to
the Specications in this manual for correct ow rate
and pressure. If specications are exceeded, rapid
failure of the internal seals may result.
• Always keep critical tool markings, such as warning
stickers and tags legible.
• Do not use the tool for applications it was not
designed 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.
• Do not use the tool for applications for which it was
not intended.
In addition to the Safety Precautions found
in this manual, observe the following for
equipment protection and care.
TOOL PROTECTION & CARE

SM21 User Manual ◄ 13
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 ow and pressure as listed in the table. Use a owmeter know to be accurate. Check the ow with the hydraulic
uid temperature at least 80 °F/27 °C.
PROBLEM CAUSE SOLUTION
Pump will not start. No hydraulic uid ow or
pressure.
Turn on power unit and check that 4–9
gpm/15–34 lpm at 1500–2000 psi/105–140 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 ow 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 uid must never ow through a reversing
valve.
Improper hydraulic uid ow. Check that 4–9 gpm/15–34 lpm at 1000–2000
psi/70–140 bar is available at the trash pump.
A 20% decrease in ow can result in a 50%
decrease in pump performance.
Pump submersed in sediment. Lift the pump from the bottom of the hole or
chamber. Use a at support under the pump if
necessary.
Trash pump inlet restricted. 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. Use a 2-1/2 inch/63.5 mm diameter re hose.
Water lift too high. Lower the outlet end of the discharge hose.
Increase hydraulic ow (9 gpm/35 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.
Wear ring worn or damaged. Check for wear ring damage or excessive
wear. Replace if necessary.
Hose used on suction side of
pump.
Remove. Use no plumbing on suction side of
pump.
Excessive clearance between
inlet bell bore and impeller
blades.
Add small washers between the impeller and
a larger washer just above those to reduce
clearance within .030–.060 in./.76–1.5 mm.
TROUBLESHOOTING

14 ► SM21 User Manual
Capacity....................................................................................................................................... 300 gpm / 1125 lpm
Weight ...................................................................................................................................................20 lbs / 9.1 kg
Length................................................................................................................................................. 16 in. / 40.6 cm
Width ............................................................................................................................................... 6.25 in. / 15.9 cm
Pressure ....................................................................................................................... 1500–2000 psi / 105–140 bar
Flow Range ............................................................................................................................... 4–9 gpm / 15–34 lpm
Porting ..................................................................................................................................................–6 SAE O-ring
Connect Size and Type ..................................................................................................3/8 in. Male Pipe Hose Ends
Discharge Diameter.......................................................................................................................... 2-1/2 in. / 6.3 cm
Drop Through Diameter..................................................................................................................... 6.5 in. / 16.5 cm
Outlet Hose Recommended ................................................................................................2.5 in. / 64 mm Fire Hose
ACCESSORIES
Description Part No.
Fire Hose, 25 ft ×2-1/2 in. Diameter Hose with 3 in. Threaded Male & Female Ends......................................02183
Fire Hose, 50 ft ×2-1/2 in. Diameter Hose with 3 in. Threaded Male & Female Ends......................................05134
Fire Nozzle, 1 in Outlet with 3 in.Threaded Female End...................................................................................02317
Thread Adapter for Pump to Fire Hose, 2-1/2 in NPT Male End to Pump & 3 in Male Thread to Hose. .......... 05133
Note: This Threaded Adapter is needed to connect pump to re hose.
Spanner Wrench for Pin Lug Coupler................................................................................................................05135
Lay Flat Hose with Couplers, 25 ft ×3 in. Diameter Camlock ...........................................................................56761
Adapter 2-1/2 NPT ×3 in. Camlock...................................................................................................................59101
SPECIFICATIONS

SM21 User Manual ◄ 15
SM21 PARTS ILLUSTRATION

16 ► SM21 User Manual
ITEM
NO. PART NO. QTY DESCRIPTION
1 02430 1 PUMP SCREEN
2 02431 1 INLET BELL
3 02432 1 IMPELLER
4 02433 1 CONICAL NUT
5 06921 1 MAIN BODY HOUSING
(INCLUDES ITEMS 10 & 29)
6 02435 1 SEAL BODY
7 00178 1 O-RING
8 02555 2 CAPSCREW
9 06922 1 PUMP SHAFT
10 06917 1 IDLER SHAFT
11 02440 1 GEAR
12 02441 1 MOTOR END PLATE
13 02442 2 OIL TUBE
14 02443 1 OUTLET CONE
15 00016 4 O-RING
16 02444 1 THRUST BEARING
17 02445 1 QUAD RING
18 01204 1 WASHER (* NOTE QUANTITY WHEN
DISASSEMBLING TOOL)
19 02446 10 CAPSCREW
20 02447 2 KEY, WOODRUFF #403
21 02448 1 CAPSCREW
22 02449 8 CAPSCREW
23 00020 1 O-RING
24 29853 1 WASHER
25 01412 2 PIGTAIL HOSE ASSEMBLY
TG1 11207 1 CIRCUIT TYPE D STICKER •
27 06919 1 IDLER GEAR ASSY (INCL ITEM 28)
28 05207 1 BUSHING
29 06916 2 BUSHING
TG2 28322 1 CE STICKER (CE ONLY) •
30 28786 1 COUPLER STICKER •
31 28788 1 MANUAL STICKER •
TG3 74763 1 NAME TAG SM21 (CE ONLY) •
KT1 03971 1 FF COUPLER SET 3/8 BODY 3/8 NPT
SK1 03081 1 SEAL KIT (INCLUDES ITEMS 7, 15,
17 & 23)
• Not shown in parts illustration.
SM21 PARTS LIST

SM21 User Manual ◄ 17
For underwater hydraulic tools the applications are
broken down into four quadrants depending on
type of tool and method of operation.
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.
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.
UNDERWATER TOOLS DEPTH GUIDELINE
DO NOT USE HYDRAULIC TOOLS UNDER-
WATER THAT ARE NOT DESIGNATED AS
AN “UNDERWATER” MODEL, OR THIS
WILL RESULT IN DAMAGE TO THE TOOL.
Tools: Breakers,
Hammer Drills and
Chipping Hammers
Max Depth: 500' -
limitations due to
accumulator PSI
max (increase 40
PSI for every 100')
Tools: Grinders,
Saws, Chain Saws
Max Depth: 1000' -
Reference hose
sizing guide below
Tools: Breakers,
Hammer Drills and
Chipping Hammers
Max Depth: 500' -
limitations due to
accumulator PSI
max (increase 40
PSI for every 100')
Tools: Grinders,
Saws, Chain Saws
Max Depth: 1000' -
Reference hose
sizing guide below
Operation Overview
Percussive Rotational
DiverROV
Recommended Hose Diameters
Depth (ft) 8 GPM 12 GPM
100 5/8” 5/8”
300 3/4” 1”
600 1” 1”
1000 1” 1-1/4”
UNDERWATER MODELS ONLY

STANLEY Infrastructure
3810 SE Naef Road
Milwaukie, Oregon 97267-5698 USA
[phone] / Fax [phone]
www.stanleyinfrastructure.com