Multiquip ST-3050D User Manual
OPERATION AND PARTS MANUAL
Multiquip
Submersible Pump
Model ST-3050D
© COPYRIGHT 2002, MULTIQUIP INC.
Revision #1 (11/18/02)
MULTIQUIP INC.
18910 WILMINGTON AVENUE
CARSON, CALIFORNIA 90746
310 - 537-3700
800/421-1244 NATIONWIDE
FAX: 310 - 537-3927
PARTS DEPARTMENT:
800/427-1244
FAX: 800/672-7877
SERVICE DEPARTMENT:
800/478-1244
FAX: 310 - 537- 4259
HERE'S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL NUMBER
ON-HAND WHEN CALLING
PARTS DEPARTMENT
800/427-1244 or 310/537-3700
FAX: 800/672-7877 or 310/637-3284
SERVICE DEPARTMENT
800/478-1244 or 310/537-3700
FAX: 310 - 537-4259
WARRANTY DEPARTMENT
800/421-1244, EXT. 279 or 310/537-3700
FAX: 310 - 537-1173
MAIN
800/421-1244 or 310/537-3700
FAX: 310 - 537-3927
PAGE 2 — ST-3050D — PARTS & OPERATION MANUAL — REV. #1 (11/18/02)
ST-3050D SUBMERSIBLE PUMP — TABLE OF CONTENTS
Here's How To Get Help ............................................2
Table Of Contents .....................................................3
Parts Ordering Procedures .......................................4
Safety Message Alert Symbols .................................5
Rules For safe Operation ..................................... 6-7
Specifications (Pump) ...............................................7
General Information .................................................. 9
ST-3050D Submersible
Pump
Components............................................................ 10
Application (Float Switches) ....................................11
Control Boxes.......................................................... 12
Control Box Installation (CB200)............................. 13
230/460 VAC Voltage Selection ...............................14
Pump Wiring Diagram .............................................15
Transformer Wiring Diagram (CB200) ....................16
Control Box Wiring Diagram (CB200) .....................17
Three-Phase Power Installation (CB200) ......... 18-19
Control Box Pre-Setup (CB200)........................ 20-21
Control Box Installation (MP102/104) .....................22
Control Box Wiring Diagram (MP102/104) ..............23
Operation .......................................................... 24-25
Maintenance ........................................................... 26
Pump Troubleshooting/Performance Curve ............27
Explanation Of Codes In Remarks Column ............28
Suggested Spare Parts ........................................... 29
Electric Submersible Pump Assembly .............. 30-33
Electric Motor Assembly.................................... 34-35
NOTE
Specification and
part number are
subject to change
without notice.
Terms and Condition of Sale
ST-3050D — PARTS & OPERATION MANUAL — REV. 0 (11/18/02) — PAGE 3
— Parts .....................36
PARTS ORDERING PROCEDURES
■■
■ Dealer account number
■■
■■
■ Dealer name and address
■■
■■
■ Shipping address (if different than billing address)
■■
■■
■ Return fax number
■■
■■
■ Applicable model number
■■
■■
■ Quantity, part number and description of each part
■■
■■
■ Specify preferred method of shipment:
■■
UPS Ground
•
UPS Second Day or Third Day*
•
UPS Next Day*
•
Federal Express Priority One (please provide us with your Federal
•
Express account number)*
Airborne Express*
•
Truck or parcel post
•
*Normally shipped the same day the order is received, if prior to 2PM west coast time.
Earn Extra Discounts when
you order by FAX!
All parts orders which include complete part numbers
and are received by fax qualify for the following extra
discounts:
Number of
line items ordered Additional Discount
1-9 items 3%
10+ items** 5%
Get special freight allowances
when you order 10 or more
line items via FAX!**
■■
■
UPS Ground Service at no charge for freight
■■
■■
■
UPS Third Day Service at one-half of actual freight
■■
cost
No other allowances on freight shipped by any other carrier.
**Common nuts, bolts and washers (all items under $1.00 list price)
do not count towards the 10+ line items.
*DISCOUNTS ARE SUBJECT TO CHANGE*
Fax order discount and UPS special programs revised June 1, 1995
Extra Fax DiscountExtra Fax Discount
Extra Fax Discount
Extra Fax DiscountExtra Fax Discount
for Domestic USAfor Domestic USA
for Domestic USA
for Domestic USAfor Domestic USA
Dealers OnlyDealers Only
Dealers Only
Dealers OnlyDealers Only
Now! Direct TOLL-FREE access
to our Parts Department!
Toll-free nationwide:
800-421-1244
Toll-free FAX:
800/6-PARTS-7 • 800-672-7877
PAGE 4 — ST-3050D — PARTS & OPERATION MANUAL — REV. #1 (11/18/02)
ST-3050D SUBMERSIBLE PUMP— SAFETY MESSAGE ALERT SYMBOLS
FOR YOUR SAFETY AND THE SAFETY OF OTHERS!
Safety precautions should be followed at all times when operating
this equipment. Failure to read and understand the Safety
Messages and Operating Instructions could result in injury to
yourself and others.
This Owner's Manual has been
developed to provide complete
instructions for the safe and efficient
NOTE
operation of the Multiquip
ST-3050D Submersible Pump.
Before using this pump, ensure
that the operating individual has
read and understands all
instructions in this manual.
Model
HAZARD SYMBOLS
SAFETY MESSAGE ALERT SYMBOLS
The three (3) Safety Messages shown below will inform you
about potential hazards that could injure you or others. The
Safety Messages specifically address the level of exposure to
the operator, and are preceded by one of three words: DANGER,
WARNING, or CAUTION.
Rotating Parts
NEVER operate equipment with covers,
or guards removed. Keep fingers, hands,
hair and clothing away from all moving
parts to prevent injury.
Accidental Starting
ALWAYS place the power source circuit
breaker or ON/OFF switch in the OFF
position, when the pump is not in use.
Sight and Hearing hazard
DANGER: You WILL be KILLED or
SERIOUSLY injured if you do not follow
directions.
WARNING: You CAN be KILLED or
SERIOUSLY injured if you do not follow
directions.
CAUTION: You CAN be injured if you
do not follow directions.
Potential hazards associated with the ST-3050D submersible
pump operation will be referenced with Hazard Symbols which
appear throughout this manual, and will be referenced in
conjunction with Safety Message Alert Symbols.
Other important messages are provided throughout this manual
to help prevent damage to your submersible pump, other property,
or the surrounding environment.
NOTE
ALWAYS wear approved eye and
hearing protection, if required.
Respiratory Hazard
ALWAYS wear approved respiratory
protection, if required.
Equipment Damage Messages
This submersible pump, other
property, or the surrounding
environment could be damaged if
you do not follow instructions.
ST-3050D — PARTS & OPERATION MANUAL — REV. 0 (11/18/02) — PAGE 5
ST-3050D SUBMERSIBLE PUMP — RULES FOR SAFE OPERATION
■
CAUTION:
Failure to follow instructions in this manual may
lead to serious injury or even death! This
equipment is to be operated by trained and
qualified personnel only! This equipment is for
industrial use only.
The following safety guidelines should always be used when
operating the ST-3050D Submersible Pump:
GENERAL SAFETY
■
DO NOT operate or service this equipment
before reading this entire manual.
■
This equipment should not be operated by persons under 18
years of age.
■
NEVER operate this equipment without proper
protective clothing, shatterproof glasses, steel-toed
boots and other protective devices required by the
job.
ALWAYS make sure submersible pump is grounded.
■
NEVER use gas piping as an electrical ground.
■
DO NOT place hands or fingers inside pump when pump is
running.
■
ALWAYS make certain that the voltage supplied to the pump
is correct. Always read the pump's nameplate to determine
what the power requirements are (230 or 460 VAC 3 phase).
■
DO NOT restrict the flow of the discharge hose as it may
cause overheating.
■
Be careful of discharge whipping under pressure.
■
Make sure pump installation is accordance with national
and local electrical codes.
■
ALWAYS have a qualified electrician perform the pump
wiring installation.
■
ALWAYS mount the control box in a vertical position
protected from the elements.
■
NEVER handle pump's AC power cord with
■
NEVER let an extension cord or plug connection
■
NEVER
to a power source.
stand in water
while AC power cord is connected
wet hands
.
lay in wate
r.
■
■
NEVER operate this equipment when not feeling
well due to fatigue, illness or taking medicine.
■
NEVER operate this equipment under the
influence or drugs or alcohol.
■
NEVER use accessories or attachments, which are not
recommended by Multiquip for this equipment. Damage to the
equipment and/or injury to user may result.
■
Manufacture does not assume responsibility for any accident
due to equipment modifications.
■
Whenever necessary, replace nameplate, operation and safety
decals when they become difficult read.
■
ALWAYS check the machine for loosened threads or bolts
before starting.
■
NEVER operate the submersible pump in an explosive
atmosphere or near combustible materials. An explosion or fire
could result causing severe
bodily harm or even death.
■
■
■
■
■
■
■
■
■
NEVER use a pump with a defective, frayed power cord.
Check the power cord on the pump for cuts in the insulation.
NEVER use a extension cord that is frayed or damaged
where the insulation has been cut.
ALWAYS make certain that proper extension cord has been
selected for the job See Table 3.
NEVER attempt to use the power cord as a lifting or lowering
device for the submersible pump.
When raising or lowering of the submersible pump is
required, always attach an adequate rope or lifting device
to the correct lifting point (handle) on the pump.
ALWAYS place the pump in an up-right position on a
platform before using. The platform will prevent the pump
from burrowing itself on soft sand or mud.
NEVER operate pump on its side.
DO NOT allow the pump to freeze in water.
NEVER leave an open pump chamber unattended.
The electrical voltage required to operate the pump can
cause severe injury or even death through physical contact
with live circuits.
from the pump before performing maintenance on the pump.
ALWAYS
disconnect the electrical power
PAGE 6 — ST-3050D — PARTS & OPERATION MANUAL — REV. #1 (11/18/02)
ST-3050D SUBMERSIBLE PUMP — RULES FOR SAFE OPERATION
■
ALWAYS make sure that electrical circuits are properly
grounded
per the
National Electrical Code
(NEC) and
local codes before operating pump. Severe injury or death by
electrocution can result from operating an ungrounded pump.
■
NEVER use this pump to remove water from a swimming pool
when people are in the water.
■
ALWAYS be sure the operator is familiar with proper safety
precautions and operations techniques before using
submersible pump.
■
ALWAYS check pump oil level only when pump is cool.
Expansion due to heat may cause hot! oil to spray from the oil
plug when the oil plug is removed.
■
DO NOT attempt to thaw-out a frozen pump by using a torch
or other source of flame. Application of heat in this manner
may heat the oil in the seal cavity above the critical point,
causing pump damage.
■
DO NOT pump water greater than 104 degrees Fahrenheit.
Also DO NOT pump liquids containing acid or alkali.
■
ALWAYS check the dual voltage connection inside the pump
for proper voltage setting.
■
ALWAYS check strainer before pumping. Make sure strainer
is not clogged. Remove any large objects, dirt or debris from
the strainer to prevent clogging.
■
ALWAYS use a large basket strainer when pumping water
that contain large debris.
. Emergencies
■
■
■
ALWAYS know the location of the nearest
ALWAYS know the location of the nearest and
In emergencies
nearest phone or
always
know the location of the
keep a phone on the job site
fire extinguisher
first aid kit
.
Also know the phone numbers of the nearest
ambulance, doctor
and
fire department
. This
information will be invaluable in the case of an
emergency.
.
.
■
ALWAYS flush pump (clean) after use when pumping water
concentrated with heavy debris. It is very important to always
flush the pump before turning it off to prevent clogging.
■
ALWAYS store equipment properly when it is not being used.
Equipment should be stored in a clean, dry location out of the
reach of children.
■
ALWAYS read, understand, and follow procedures in
Operator’s Manual before attempting to operate equipment.
Maintenance Safety
■
NEVER lubricate components or attempt service on a running
machine.
■
ALWAYS allow the machine a proper amount of time to cool
before servicing.
■
Keep the machinery in proper running condition.
■
Fix damage to the machine immediately and always replace
broken parts.
ST-3050D — PARTS & OPERATION MANUAL — REV. 0 (11/18/02) — PAGE 7
ST-3050D SUBMERSIBLE PUMP — SPECIFICATIONS
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1. Motor Rotation – Upon start-up, the pump "kicks" in the opposite direction of motor rotation. The correct rotation is counter-
clockwise (CCW) as viewed from the impeller end of the pump. Rotation direction for 3-phase pumps is changed by reversing
two of the power leads.
2. Mechanical Oil Seal – Use a good grade 10 weight non-detergent hydraulic oil (i.e. Shell Turbo 32 or equivalent). Fill oil cavity
75% to 85% full (allow air space for expansion).
PAGE 8 — ST-3050D — PARTS & OPERATION MANUAL — REV. #1 (11/18/02)
ST-3050D SUBMERSIBLE PUMP — GENERAL INFORMATION
Introduction
The Multiquip Model ST-3050D submersible pump is designed
to pump water and is used for the draining (de-watering) of
swimming pools, well casings construction sites, cofferdams,
manholes, transformer vaults and excavations.
A vortex type impeller is attached to the output shaft of a 5.0 HP
electric motor which provides adequate power for general
purpose pumping. This submersible pump is supplied complete
with an electric power cable, and a discharge port located at the
top of the pump which accepts a 3-inch hose.
This pump is ideal for portability because of its light weight and
carrying handle. For reliability and long life, a mechanical seal
provides shaft sealing, with an oil chamber separating the pump
section from the motor.
The pump when in use, should be installed as free standing
(upright position) on its strainer base. A 3-inch discharge hose
(not supplied) should be connected to the discharge port located
on top of the pump. The discharge hose should be adequately
supported to avoid stress on the pump.
For maximum water flow, the discharge hose should be kept as
short as possible, and with minimum elevation above the pump.
Remember as the length and/or height of the discharge hose is
increased, the flow of water will be reduced. Also any reduction
in the hose size, and any fittings such as valves or outlet nozzles,
will restrict the water flow.
To avoid back-siphonage when the pump is switched off, ensure
that the end of the discharge hose is installed above the water
level at the final discharge point.
This pump must always be positioned on a platform in an upright
position. NEVER operate the pump by a suspended rope. To
prevent large solids from entering the pump, install a wire mesh
screen or similar barrier around the pump.
If the pump was used to pump water containing mud, silt, use
clean water to flush out the pump after each use.
DO NOT allow the pump to run dry, as this will damage the
pump. During maintenance, dry running is permissible but only
for a few seconds.
NEVER lift the pump by its electrical power cord. ALWAYS lift
the pump by its carrying handle or attached a rope to carrying
handle.
A pump fully submerged pump in liquid will not freeze, unless
the liquid freezes. DO NOT allow a partially submerged pump to
freeze. The expansion of water freezing in the volute may crack
the pump, causing expensive repairs. If there is any danger of
the pump being subjected to freezing temperatures, Lift the pump
from water and allow it to drain thoroughly.
If the pump jams or the pump rotor locks for any reason,
disconnect the pump from the power source immediately.
Allowing the pump motor to cycle ON and OFF under an overload
condition can burn out the motor.
When replacement of nuts and bolts is required, use only
recommended parts as referenced in the parts section of this
manual. This pump uses
measurement threads.
metric
threads. DO NOT use english
When the pump is switched off, the water remaining in the hose
will run back through the pump. This can be avoided by placing
a non-return valve in the hose nearest the pump.
NEVER use this submersible pump to pump flammable liquids
or operate in a explosive or flammable environment.
Avoid using this pump in conditions where mud, grit, silt or other
debris are present. These conditions could cause blockage and
cause excessive pump wear.
DO NOT install the pump directly into an area where there is a
heavy build-up of mud, grit, silt or debris. If this condition is present,
install the pump on a platform before operating.
ST-3050D — PARTS & OPERATION MANUAL — REV. 0 (11/18/02) — PAGE 9
ST-3050D SUBMERSIBLE PUMP — COMPONENTS
Figure 1. Submersible Pump Components
Figures 1 shows the location of the basic components, for the
ST-3050D Submersible Pump. Listed below is a brief explanation
of each component.
1. Strainer Base – This strainer base is made of stainless
steel which is resistant to hardware corrosion. DO NOT
pump large objects or debris with this pump. This pump is
for pumping water only. For de-watering purposes, always
place the strainer base on a platform.
2. Volute/Impeller – Impellers are constructed of high-chrome
ductile iron to minimizes wear and prolong service life.
3. Electric Motor – This unit utilizes a three-phase, 230/460
VAC, 5.0 HP electric motor. Consult with a licenced
electrician before connecting motor to a power source.
Observe all city and local safety codes.
4. Discharge Port – Connect a 3-inch hose to this port.
Remember to adequately support the discharge hose to
avoid stress on the pump.
5. AC Power Cable – This unit is supplied with a 50 ft. (15.24
meters) AC power cable. Always check the cable for signs
of wear. NEVER! use a defective power cable. Replace the
cable immediately if the cable is worn or defective.
6. Carrying Handle – Always carry the submersible pump
by its handle. NEVER! carry the pump by its power cord.
Carrying or lifting the pump by the power cord, will cause
undue stress on the cord, and ultimately the cord will
become dislodged from the pump.
7. Thermal Overload Protection – This pump will require
the use of an external control box with a thermal overload
protection device that will shut-down the motor in the event
of high operating temperatures. The motor will automatically
restart once the temperature returns to an acceptable
operating temperature.
8. Mechanical Oil Seal – This oil filled seal provides
lubrication when running the pump dry. NEVER! run the
pump dry. Running the pump dry will cause severe damage
to the pump.
9. Mechanical Oil Seal Plug – Remove this plug to check
and add hydraulic oil (Shell 32 or equivalent) to the oil
cavity. This oil protects the mechanical seal. Oil cavity should
be full enough to cover seal spring.
PAGE 10 — ST-3050D — PARTS & OPERATION MANUAL — REV. #1 (11/18/02)
ST-3050D SUBMERSIBLE PUMP — APPLICATION (FLOAT SWITCHES)
CAUTION!
HIGH
VOLTAGE!
Float Switch Theory
There is a tilt-sensitive mercury switch hermetically sealed within
each float. As the liquid level (water) rises or falls, the float changes
its angle until the mercury switch makes (close) or breaks (open)
the circuit.
The length of cord between the float and point of attachment
determines the amount of water to be pumped.
Float Switch (Dual)
Float switches (Figure 2) are used for the unattended operation
of the submersible pump. The ST-3050D pump requires the use
of a control box to perform this function. Shown in Figure 2 is an
example of a dual float control switch application.
The Model ST-3050D submersible pump requires one each of
the Model SW-1WOP float type mercury switches. These
switches have a pumping range level between 5.5~18 feet
(1.67~5.5 meters). All float switch connections are bare wire (no
Contact Multiquip sales department to order float switches.
plug). The ST-3050D submersible pump
Control Box
application. The MCP102/104 control boxes
switch capability.
EXTERNAL 3-PHASE
(230 OR 460 VOLT)
POWER SOURCE
CIRCUIT
BREAKER
L1
L2
L3
GROUND
RED
WHITE
BLACK
GREEN
LIFTING
ROPE
must use the
CB 200
when float switches are required for the job
do not have float
CONTROL
BOX
CAUTION!
HIGH
VOLTAGE!
CB200
OFF
MANUAL
AUTO
FLOAT
SWITCH
INPUTS
RESET
AC
POWER
TO
PUMP
ON
AC
POWER
INPUT
3-INCH
DISCHARGE
HOSE
PUMP
FLOAT
SWITCHES
PUMP
OFF
SUPPORT
SUBMERSIBLE
PUMP
PLATFORM
Figure 2. Dual Float Control Switch
ON
ST-3050D — PARTS & OPERATION MANUAL — REV. 0 (11/18/02) — PAGE 11
ST-3050D SUBMERSIBLE PUMP — CONTROL BOXES
CAUTION!
HIGH
VOLTAGE!
Control Boxes
Control boxes (Figure 3) are available for remote control and
thermal shut-down capability for the submersible pump. These
water resistant control boxes provide electronic overload
protection, watertight housing and glands to prevent water from
leaking into the box, and a float switch interface.
There are various control box models to choose from, reference
Table 2 for the model that meets your pumping requirements.
Contact Multiquip sales department to order control boxes as
listed in Table 2.
NOTE
ALWAYS
licensed electrician perform the
installation of the control box.
have a qualified
Figure 3. Electrical Control Box (CB-200)
AC POWER
INPUT
CONTROL
BOX
CB200
OFF
MANUAL
ON
FLOAT
SWITCH
INPUT
CAUTION!
VOLTAGE!
AUTO
HIGH
RESET
TO PUMP
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PAGE 12 — ST-3050D — PARTS & OPERATION MANUAL — REV. #1 (11/18/02)
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