Mody Pumps MHMXP User Manual

MODEL: MHMXP 6 X 12

OPERATING INSTRUCTIONS, INSTALLATION & MAINTENANCE

MANUAL INCLUDING SPARE PARTS LIST

Mody Pumps Inc.

2166 Zeus Court

Bakersfield, CA 93308

Tel.: [phone] FAX.: [phone]

E-Mail: [e-mail]

http://www.modypump.com

LLIIFFEE IISS PPRREECCIIOOUUSS -- TTHHIINNKK SSAAFFEETTYY

1. Most accidents can be avoided by using COMMON SENSE.

2. Please read the operation and maintenance instruction manual supplied with the
pump. If you did not receive one, please call your local distributor before pump
installation.

3. Do not wear loose apparel that may become entangled in the impeller or other
moving parts.

4. Always use appropriate safety equipment, such as safety glasses, when working on
the pump or piping.

5. Pumps build up heat and pressure during operation-allow time for pumps to cool
before handling or servicing.

6. Only qualified service personnel should install, operate and repair pump.

7. Keep clear of suction and discharge openings. DO NOT insert fingers in pump with
power connected.

8. Do not pump flammable or hazardous materials (gasoline, acids, alkalis, etc.)

9. Do not block or restrict discharge hose, as it may whip or burst catastrophically
under pressure.

10. Make sure lifting handles/hooks are securely fastened each time before lifting.

11. Do not lift pump by the power cord under any circumstances.

12. Do not exceed manufacturer's recommendation for optimum performance, as this
could cause the motor/pump to overheat and lead to premature wear or failure.

13. Secure the pump in its operating position so it does not tip over, fall or slide.

14. Keep away from impeller when power is connected.

15. Submersible Pumps are not approved for use in swimming pools, recreational water
installations, decorative fountains or any installation where human contact with the
pumped fluid is common.

16. Do not operate pump without adequate protection and safety devices in place.

17. Always replace safety devices that have been removed during service or repair.

18. To reduce risk of electrical shock, pump must be properly grounded in accordance
with the National Electric Code and all applicable state and local codes and
ordinances.

19. To reduce risk of electrical shock, always disconnect the pump from the power

source before handling or servicing.

20. Any wiring of pumps should be performed by a qualified electrician.

21. Never operate a pump with a power cord that has frayed or brittle insulation.

22. Cable should be protected at all times to avoid punctures, cuts, and

abrasions - inspect frequently.

23. Never handle connected - "hot" power cords with wet hands.

24. Never operate a pump with a plug-in type power cord without a ground fault circuit
interrupter, adequate overload and short circuit protection.

IMPORTANT !!! MODY Pumps Inc. is not responsible for losses, injury, or death resulting
from a failure to observe these safety precautions, misuse or abuse of pumps or
equipment.

Mody Pumps Inc.

:

2166 Zeus Court, Bakersfield, CA 93308 Tel.: [phone] Fax: [phone]

GENERAL INFORMATION.

“MHMXP” SERIES OF MODY'S SUBMERSIBLE SEWAGE PUMPS ARE PRIMARILY DESIGNED FOR

THE
HANDLING HIGH QUANTITIES OF ABRASIVES LIKE FLY ASH, SEWAGE, SLUDGE, WASTEWATER
AND LIQUID MANURE IN CLASS 1 DIVISION 1 GROUP C & D ENVIRONMENTS. THEY CAN ALSO
BE USED FOR HANDLING STORMWATER DRAINAGE WITH HIGH SOLIDS CONTENT.

THE SERVICE LIFE OF A SUBMERSIBLE PUMP PRIMARILY HINGES ON TWO ASPECTS: THE
DEPENDABILITY OF THE SEALING SYSTEM AND THE WEAR RESISTANCE OF THE PUMP ITSELF.

THE “MHMXP” SERIES OF PUMPS ARE AVAILABLE WITH A WIDE RANGE OF IMPELLERS TO
SUIT PRACTICALLY EVERY PUMPING DUTY WITH HIGH EFFICIENCES AND DIFFERENT
IMPELLER TRIMS AND ARE AVAILABLE IN CD4MCU AS WELL AS IN NI-HARD CONSTRUCTION.

THE MHMXP HAS A VORTEX IMPELLER WITH PUMP OUT VANES ON THE BACK SIDE AND A
MINIMUM 75MM/3” SOLIDS HANDLING CAPABILITY.
IMPELLERS ARE IN NI-HARD CONSTRUCTION. THE PUMP VOLUTES ARE ALSO IN NI-HARD
WITH SMOOTH PROFILED GEOMETRY FOR CLOG FREE OPERATION AND HIGH EFFICIENCES. ALL
VOLUTES ARE FITTED WITH WEAR RINGS WHEN EQUIPPED WITH CHANNEL IMPELLERS.

IT IS IN THE INTEREST OF THE USER THAT HE/SHE GO THROUGH THIS MANUAL IN DETAIL
PRIOR TO USING THE PUMP.

TECHNICAL DESCRIPTION.

THE PUMPSET IS IN A MODULAR CONSTRUCTION ENSURING EASY AND SIMPLE
SERVICEABILITY. THE MAJOR DESIGN FEATURES ARE AS UNDER:

A] THERMAL PROTECTION : SEE UNDER "MOTOR PROTECTION" .

B] THE MOTOR: FM APPROVED EXPLOSION PROOF CLASS 1, DIV. 1, GROUP C & D THREE

PHASE AIR FILLED CONTINUOUS DUTY RATED (15 MIN. IN AIR) SQUIRREL CAGE MOTOR
WITH DIE CAST ALUMINUM ROTOR. BI-METALLIC SWITCHES EMBEDDED IN STATOR WINDING
TO PROTECT AGAINST OVERHEATING. STATOR INSULATION CLASS “F”.

C] THE SEAL CHAMBER: THE HEART OF THE "MODY" PUMP. DOUBLE MECHANICAL SEALS,
STANDARD UPPER SEAL IS CARBON/CERAMIC (OPTIONAL SILICON CARBIDE/SILICON
CARBIDE, LOWER SEAL IS SILICON CARBIDE/SILICON CARBIDE. SECONDARY SEALS OF
NITRILE RUBBER AND METAL PARTS IN STAINLESS STEEL, RUNNING IN AN OIL BATH.

D] BEARINGS: DOUBLE ROW ANGULAR CONTACT LOWER BEARING, WITH SINGLE ROW DEEP
GROOVE UPPER BALL BEARING GREASED FOR LIFE WITH A SPECIAL HIGH TEMPERATURE
BEARING GREASE REQUIRING NO PERIODIC MAINTENANCE WHATSOEVER.

E] THE HYDRAULIC ELEMENTS: SINGLE CHANNEL/VORTEX AND THREE VANE IMPELLERS WITH
LARGE SOLIDS HANDLING CAPACITY. SMOOTH PROFILED VOLUTES FOR HIGH EFFICIENCES.

F] CABLE GLAND ASSEMBLY: THE PUMP IS SUPPLIED WITH 25’ POWER CABLE AS
STANDARD. THE CABLE IS SIZED ACCORDING TO MOTOR HP. 25’ TRAILING CABLE
INCORPORATING THERMAL OVERLOADS AND SEAL PROBE SENSOR ARE STANDARD. THE CABLE
IS TERMINATED IN THE PUMP AT THE CABLE GLAND. THE GLAND ASSEMBLY SEALS THE
CABLE ON THE OUTSIDE SHEATH USING A CABLE GROMMET.

G] ELECTRICAL INFORMATION: MOTORS ARE DESIGNED TO OPERATE ON SINGLE VOLTAGE
AND FREQUENCY. MAXIMUM DEVIATION IN VOLTAGE ALLOWED IS -/+ 6% AND FREQUENCY -/+
3%. CHECK NAME PLATE FOR OPERATING VOLTAGE AND FREQUENCY.

DESIGN PARAMETERS :

• LOWEST LIQUID LEVEL SHOULD BE 0.3 MTRS (12”) ABOVE PUMP BASE.

• THE MAXIMUM SUBMERGENCE RECCOMENDED IS 15 METRES. (50’)

• THE SPECIFIC GRAVITY OF THE PUMPED FLUID SHOULD NOT EXCEED 1.1.

• MAXIMUM FLUID TEMPERATURE IS 40 DEG. CELSUIS.

• pH OF THE PUMPED FLUID : 6 - 11

INSTALLATION

PUMPS ARE AVAIABLE FOR TWO TYPES OF INSTALLATION:

P TYPE INSTALLATION: SEMI PERMANENT/WET. PUMPS ARE LOWERED DOWN GUIDE BARS TO

AUTOMATICALLY CONNECT TO DISCHARGE PIPING. PLEASE SEE ILLUSTRATION AT END OF
MANUAL FOR DETAIL DIMENSIONS AND INSTALLATION.

S TYPE INSTALLATION: PORTABLE/WET. VERSATILE, MULTIPURPOSE, EASY TO INSTALL AND
MOVE FROM SUMP TO SUMP. PUMP IS AVAILABLE WITH HOSE/FLANGE TYPE OUTLET
CONNECTION AND INDEPENDENT BASE STAND. SEE ILLUSTRATION AT END OF MANUAL.

• CHECK THAT THE SITE VOLTAGE CORRESPONDS WITH THAT OF THE PUMP.

• CHECK THAT FUSES ARE INTACT.

• USE SHORTEST POSSIBLE HOSE OF RECOMMENDED DIMENSION. AVOID SHARP BENDS,

CREASES AND CONTRACTIONS. FOR P TYPE AND D TYPE INSTALLATIONS ENSURE ALL
ACCESSORIES ARE AVAILABLE BEFORE STARTING INSTALLATION.

• NEVER LIFT OR PULL THE PUMP BY MEANS OF THE CABLE. SUSPEND THE PUMP BY A

ROPE/CHAIN OR PREFERABLY PLACE IT ON A SOLID BASE. FOR P TYPE INSTALLATIONS
THE REQUISITE CHAIN & TACKLE EQUIPMENT MUST BE AVAILABLE. PLEASE READ OUR
PUBLICATION REGARDING “P” TYPE INSTALLATION.

• WIRE THE PUMP TO THE MAINS CORRECTLY. ALWAYS USE A STARTER OR A PANEL BOARD.

SEE INSTRUCTIONS UNDER "MOTOR PROTECTION" BELOW.

• WHEN THE PUMP IS ENERGIZED IT WILL KICK, WHICH IS OPPOSITE TO THE DIRECTION

OF ROTATION OF THE IMPELLER. SHIFT TWO PHASES IN THE POWER CONNECTION IF THE
KICK IS IN THE WRONG DIRECTION. THE CORRECT DIRECTION IS INDICATED ON THE
PUMP COVER AT THE TOP OF THE PUMP.

• CHECK LEVEL AND CONDITION OF THE OIL AT SERVICE EVERY SIX MONTHS. IF THE OIL

IS EMULSIFIED BY WATER THE SEALS MUST BE REMOVED FROM THE ROTOR SHAFT FOR
FURTHER ACTION. THE SHAFT SEAL SHOULD BE CHECKED FOR WEAR EVERY 2500 HRS. OF
OPERATION. IF SEAL FACES SHOW ANY SIGNS OF WEAR, THEY SHOULD BE REPLACED.

.

TROUBLE GUIDE CAUSE REMEDY

1.FUSES BLOWN. 1.REPLACE FUSES

2.CABLE DAMAGED 2.SHORTEN/REPLACE CABLE

PUMP DOES NOT START 3.NO POWER. 3.CHECK POWER SUPPLY

4.BLOCKED IMPELLER. 4.CLEAN BOTTOM PARTS.

5.STATOR WINDING BURNT. 5.REPLACE STATOR.

1.BLOCKED IMPELLER. 1.CLEAN BOTTOM PARTS.

2.IMPELLER ROT.WRONG 2.SHIFT TWO PHASE CONN.

PUMP STARTS BUT STOPS. 3.CONNECTED FOR WRONG 3.CHECK & RECONNECT.

VOLTAGE.

4.VOLTAGE TOO LOW/HIGH. 4.APPROACH POWER CO.

5.LIQUID DENSITY HIGH 5.HIGHER HP REQUIRED.

6.BI-METAL TRIPS. 6.CHECK CURRENT.

1.IMPELLER ROT.BACKWARD. 1.SHIFT TWO PHASE CONN.

2.PUMP WORN DOWN. 2.REPLACE IMPELLER.

PUMP GIVES TOO LITTLE 3.LONG HOSE AND DIAMETER 3.CHECK PRESSURE LOSSES
WATER. TOO SMALL.

4.PRESSURE HEAD TOO HIGH 4.INSTALL BIGGER PUMP.

5.WEARING RING WORN OUT. 5.REPLACE WEAR RING.

MOTOR PROTECTION

IT IS ESSENTIAL THAT THE PUMP BE USED WITH A STARTER AND PREFERABLY A PANEL
BOARD. CONTROL PANELS INCORPORATING ALL PROTECTIVE DEVICES ARE READILY
AVAILABLE. PLEASE CONTACT YOUR NEAREST DISTRIBUTOR. THE OVERLOAD RELAY IN THE
STARTER SHOULD BE CHOSEN ACCORDINGLY AND AMPERES SET AT THE FULL LOAD SETTING
FOR THE PARTICULAR MODEL OF THE PUMP.

IMPORTANT.

THE PUMP IS SUPPLIED WITH TWO CABLES:

• RED/WHITE/BLACK ARE THE POWER CORES.

• GREEN CORE IS FOR EARTHING.

• TRAILING CABLE - BLACK (P1) & WHITE (P2) ARE THERMALS AND RED (W1) & ORANGE

(W2) ARE MOISTURE LEADS

PLEASE SEE ENCLOSED WIRING INFORMATION ON MOTOR AND THERMAL/MOISTURE
PROTECTION.

THE SUBMERSIBLE MOISTURE PROTECTION SYSTEM CONSISTS ON THE NON-WICKING CABLE
CAP ASSEMBLY AND THE DUAL MOISTURE SENSING PROBES. THE CABLE CAP ASSEMBLY
PREVENTS MOISTURE FROM WICKING THROUGH THE CABLE ASSEMBLY EVEN WHEN THE CABLE
JACKET HAS BEEN PUNCTURED. POWER AND CONTROL CONDUCTORS ARE STRIPPED BARE AND
TERMINATED IN BUTT CONNECTORS. THE CABLE AND BUTT CONNECTOR ASSEMBLIES ARE
ENCAPSULATED IN EPOXY ASSURING A POSITIVE BOND TO THE CONDUCTORS.

DUAL MOISTURE SENSING PROBES EXTEND INTO THE OIL CHAMBER LOCATED BETWEEN THE
DOUBLE MECHANICAL SEALS. SHOULD THE OUTER SEAL FAIL, WATER WILL ENTER THE OIL
CHAMBER THROUGH THE LABYRINTH SLINGER PATHS AND CREATE A WATER/OIL EMULSION IN
THE OIL CHAMBER. THE PRESENCE OF WATER IN THE OIL CHAMBER INCREASES THE
CONDUCTIVITY SUFfiCIENTLY TO INCREASE CURRENT flOW THROUGH THE PROBE CIRCUIT
WHICH ILLUMINATES A WARNING LIGHT AND ACTIVATES A RELAY TO DE-ENERGIZE THE
MOTOR. THE RELAY IS PURCHASED SEPARATELY. THE MOISTURE DETECTION CONTROL SYSTEM
MUST BE SO CONNECTED FOR THE WARRANTY AND THE FM LISTING TO BE VALID.