Magnum MSD 1021 User manual

SUBMERSIBLE DEWATERING PUMP
MSD 1021 • MSD 1021/A • MSD 2051
MSD 2051/A
OPERATING/PARTS MANUAL

2
INTRODUCTION
This manual provides information and procedures to safely operate and maintain the pump. For your own safety
and protection from physical injury, carefully read, understand, and observe the safety instructions described in this
manual. Keep a copy of this manual with the unit at all times. Additional copies are available from Magnum Products
LLC, or can be found at www.m-p-llc.com. The information contained in this manual was based on machines in
production at the time of publication. Magnum Products LLC reserves the right to change any portion of this information
without notice.
DO NOT MODIFY or use this equipment for any application other than which it was designed for.
MAGNUM PRODUCTS LLC
215 Power Drive • Berlin, WI 54923
U.S.A.
Phone: [phone]
FAX: [phone]
Toll Free: 1-800-926-9768
www.m-p-llc.com
For technical or parts QUESTIONS, please contact Magnum Products’ Customer Support or
Technical Support team at 920-361-4442 or toll free at 1-800-926-9768. Please have your
serial number available.
To ORDER SERVICE PARTS, please contact the dealer from which you purchased the unit,
or call Magnum Products to locate a dealer in your area.
Unit Model Number:_____________________________________
Unit Serial Number: _____________________________________

3
TABLE OF CONTENTS
Page
INTRODUCTION ................................................................................................................................... 2
TABLE OF CONTENTS ......................................................................................................................... 3
SAFETY NOTES .................................................................................................................................... 4
OPERATING SAFETY ........................................................................................................................... 4
UNIT SERIAL NUMBER LOCATION ..................................................................................................... 5
SPECIFICATIONS ................................................................................................................................. 6
OPERATING THE PUMP ...................................................................................................................... 7
CLEANING THE PUMP ......................................................................................................................... 7
STORING THE PUMP ........................................................................................................................... 7
COMPONENT LOCATIONS - MSD 1021 & MSD 1021/A .................................................................... 8
COMPONENT LOCATIONS - MSD 2051 & MSD 2051/A .................................................................... 9
UNIT ASSEMBLY AND PARTS - MSD 1021 & MSD 1021/A ...................................................... 10 - 11
UNIT ASSEMBLY AND PARTS - MSD 2051 & MSD 2051/A ......................................................12 - 13
WIRING DIAGRAM - MSD 1021 & MSD 1021/A ................................................................................ 14
WIRING DIAGRAM - MSD 2051 & MSD 2051/A ................................................................................ 15

4
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 manual contains DANGERS, WARNINGS, CAUTIONS, NOTICES and NOTES which must be
followed to prevent the possibility of improper service, damage to the equipment, personal injury or death.
The following formatting options will apply when calling the readers attention to the DANGERS, WARN-
INGS, CAUTIONS, NOTICES and NOTES.
DANGER
INDICATES A HAZARDOUS SITUATION WHICH, IF NOT AVOIDED,
WILL RESULT IN DEATH OR SERIOUS INJURY.
WARNING
Indicates a hazardous situation which, if not avoided, could result
in death or serious injury.
CAUTION
Indicates a hazardous situation which, if not avoided, may result in minor
or moderate injury.
NOTICE
Indicates a hazardous situation which, if not avoided, may result in
property or equipment damage.
Note: Notes contain additional information important to a procedure and will be found within the regular
text body of this manual.
SAFETY NOTES
OPERATING SAFETY
Before using the pump be sure to read and understand all of the instructions! This equipment was designed
for specific applications; DO NOT modify or use this equipment for any application other than which it was
designed for. Equipment operated improperly or by untrained personnel can be dangerous! Read the
operating instructions and familiarize yourself with the location and proper use of all instruments and
controls. Inexperienced operators should receive instruction from someone familiar with the equipment
before being allowed to operate the pump. The following points should be practiced at all times:
•NEVER start a unit in need of repair.
•NEVER operate the pump if any of the following conditions exist during operation:
1. Sparking occurs.
2. Combustible surface is present.
3. Protective covers are loose or missing.
WARNING
Never pump volatile or corrosive chemicals or solutions with this pump.
These fluids could create serious health and environmental hazards. High
pressure increases the chance of pump explosion which may result in
serious personal injury.

5
215 Power Drive • Berlin, WI 54923
1-800-926-9768
MODEL
SERIAL NUMBER
MSD 2051
000000
kglbs.
WEIGHT
FLOW
Lpmgpm
POWER
kWhp
TOTAL HEAD
mft.
DO NOT RUN PUMP DRY!
Unit ID Tag
215 Power Drive • Berlin, WI 54923
1-800-926-9768
MODEL
SERIAL NUMBER
MSD 2051
000000
kglbs.
WEIGHT
FLOW
Lpmgpm
POWER
kWhp
TOTAL HEAD
mft.
DO NOT RUN PUMP DRY!
Unit ID Tag
UNIT SERIAL NUMBER LOCATION
Refer to the location illustrated below to find the unit ID tag. Important information, such as the unit serial number
and model number are found on this tag. Record the information from this tag, so it is available if the tag is lost or
damaged. When ordering parts or requesting technical service information, you may be asked to specify this
information.

6
SPECIFICATIONS
Read this manual carefully before attempting to use this pump. The potential for property damage, personal injury
or death exists if this equipment is misused or installed incorrectly.
MAGNUM MODEL MSD 1021 MSD 1021/A MSD 2051 MSD 2051/A
Motor Type ......................1 Ø, 60 hz.................... 1 Ø, 60 hz ................... 1 Ø, 60 hz ...................... 1 Ø, 60 hz
Amperage Range
(Min. - Max.)* ..................2.3 - 3.1A..................... 2.3 - 3.1A.................... 2.8 - 4.5A ....................... 2.8 - 4.5A
Voltage ............................120V............................ 120V ........................... 120V............................... 120V
Pump Output
Discharge Diameter ........ 1.25 in. (32 mm) .......... 1.25 in. (32 mm) ......... 2 in. (50 mm).................. 2 in. (50 mm)
Maximum Head...............16 ft. (5 m)................... 16 ft. (5 m) .................. 33 ft. (10 m).................... 33 ft. (10 m)
Maximum Discharge .......37 gpm (140 Lpm)....... 37 gpm (140 Lpm) ...... 63.4 gpm (239 Lpm)....... 63.4 gpm (239 Lpm)
Power...............................27 hp (200 W) ............ .27 hp (200 W)............ .5 hp (373 W) ................. .5 hp (373 W)
Solids Handling
Capacity .......................... .2x.5 in. (5x12 mm) ..... .2x.5 in. (5x12 mm)..... .2x.9 in. (4x20 mm) ........ .2x.9 in. (4x20 mm)
Weights and Dimensions
Dry Weight ...................... 11 lbs. (5 kg)................ 11.5 lbs. (5.2 kg) ......... 21.5 lbs. (9.8 kg) ............ 22 lbs. (10 kg)
Shipping Weight..............11.5 lbs. (5.2 kg).......... 12 lbs. (5.4 kg)............ 23 lbs. (10.4 kg) ............. 23.5 lbs. (10.7 kg)
Maximum Diameter ........ 6.25 in. (159 mm) ........ 6.25 in. (159 mm) ....... 8.46 in. (215 mm)........... 8.46 in. (215 mm)
Maximum Height ............11.45 in. (291 mm) ...... 11.45 in. (291 mm)...... 13.97 in. (355 mm)......... 13.97 in. (355 mm)
Maximum Box Height......14.5 in. (368 mm) ........ 14.5 in. (368 mm) ....... 14.9 in. (378 mm).......... 14.9 in. (378 mm)
Maximum Box Width .......7.13 in. (181 mm) ........ 7.13 in. (181 mm) ....... 9 in. (229 mm)................ 9 in. (229 mm)
Cable Length...................13 ft. (4 m)................... 13 ft. (4 m) .................. 20 ft. (6 m)...................... 20 ft. (6 m)
Other Specifications
Cable Diameter ...............18AWG........................ 18AWG ....................... 16 AWG ......................... 16 AWG
Impeller Material .............Plastic.......................... Plastic ......................... Cast Iron ........................CastIron
Impeller Type ..................Semi-open................... Semi-open .................. Semi-open...................... Semi-open
Strainer Material..............Polypropylene ............. Polypropylene............. Polypropylene ................ Polypropylene
Seal.................................Carbon Ceramic .......... Carbon Ceramic ......... Carbon Ceramic............. Carbon Ceramic
Automatic Float ...............No................................ Yes.............................. No .................................. Yes
*Amperage varies upon head and flow.
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.

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OPERATING THE PUMP
1. Connect the discharge hose with the proper fittings.
2. Place the pump in the water. Lower by attaching a strong rope to the handle. The pump should be placed on a
flat, hard surface in at least 2 inches of water.
WARNING
Never lower or move the pump with the electrical cord. Damage to the cord or cord
seal could result in equipment damage and/or electrocution.
NOTICE
Do not install the pump on clay, dirt, or sand surfaces. Small stones, gravel, sand, and mud can clog the pump and
reduce the performance or cause malfunction of the pump. If necessary, place the pump on a concrete block or slab
to prevent the pump from sinking.
3. Connect the grounding-type plug to an outlet.
4. The pump should begin to cycle. To ensure proper operation, observe the pump to make sure it has enough
water to avoid cavitation.
WARNING
Never operate a pump or pump motor with wet hands. Never stand on a wet or damp
surface when operating the pump. Doing so could result in equipment damage or
personal injury.
WARNING
To prevent overheating, always keep the pump completely submerged when running
continuously. Running the pump continuously while not submerged could result in
equipment damage.
CLEANING THE PUMP
After running the pump, wash the pump in clean water. Keep inlet screens clean at all times, and always check the
screens before each use.
STORING THE PUMP
Please take the following actions in preparing the unit for storage.
1. Remove pump impeller cover and clean inside of pump housing. Coat inside of pump with a light film of oil to
reduce corrosion.
2. Tape up ports to prevent anything from falling into pump.
3. Store in a clean, dry area.

8
HANDLE
DISCHARGE
INLET
IMPELLER
(UNDER INLET)
HOUSING
CORD
COMPONENT LOCATIONS - MSD 1021 & MSD 1021/A

9
HANDLE
DISCHARGE
INLET
IMPELLER
(UNDER INLET)
HOUSING
CORD
COMPONENT LOCATIONS - MSD 2051 & MSD 2051/A

10
1
2
3
4
5
6
7
8
10
11
9
UNIT ASSEMBLY AND PARTS - MSD 1021 & MSD 1021/A

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ITEM NO. PART NO. QTY DESCRIPTION NOTES
1 41668 1 Hose coupling
2 41609 1 Power cord
3 41633 1 Upper bearing
4 41623 1 Capacitor - run
5 41656 1 Motor lower cover
6 41647 1 Mechanical seal
7 41750 1 O-ring - 2”
8 41657 1 Seal plate
9 41688 1 Impeller
10 41683 1 Pump casing
11 41708 1 Strainer
- 41663 1 Oil seal Not shown
- 41675 1 Float switch Not shown
- 41737 1 Bolt - M4-.70 x 12 Not shown

12
1
2
3
45
7
6
8
9
11
10
12
13
UNIT ASSEMBLY AND PARTS - MSD 2051 & MSD 2051/A

13
ITEM NO. PART NO. QTY DESCRIPTION NOTES
1 41617 1 Handle
2 41610 1 Power cord
3 41634 1 Upper bearing
4 41641 1 Lower bearing
5 41624 1 Capacitor - run
6 41648 1 Mechanical seal
7 41750 1 O-ring - 2”
8 41658 1 Seal plate
9 41689 1 Impeller
10 41669 1 Hose coupling
11 41684 1 Pump casing
12 41699 1 Suction cover
13 41709 1 Strainer
- 41664 1 Oil seal - lower Not shown - attaches to seal plate
- 41674 1 Oil seal - upper Not shown
- 41675 1 Float switch Not shown
- 41725 1 Band cable - fixed Not shown

14
WIRING DIAGRAM - MSD 1021 & MSD 1021/A

15
WIRING DIAGRAM - MSD 2051 & MSD 2051/A

REV: B
PART NO: 41864
01.28.09