Multiquip MQD2H manual General Information, Application

Page 12

GENERAL INFORMATION

APPLICATION

The MQD2H and MQD3H diaphragm pumps are designed to be used for de-watering applications.The suction and discharge ports on the MQD2H use a 2-inch diameter opening, which allows the pump to pump at rate of approximately 3,000 gallons/hour (gph) or 11,340 liters/hour (lph).The suction and discharge ports on the MQD3H use a 3-inch diameter opening, which allows the pump to pump at rate of approximately 5,400 gallons/hour (gph) or 20,456 liters/hour (lph).

Diaphragm pumps use a positive displacement design rather than centrifugal force to move water through the casing. This means the pump will deliver a specific amount of flow per stroke, revolution or cycle. These pumps are commonly referred to as mud hogs, mud hens and mud suckers.Their names reflect their popularity for use in applications where shallow depths and slurry water render centrifugal pumps ineffective.

Power Plant

These diaphragm pumps are powered by a 4.0 horsepower air cooled, 4-stroke, single cylinder HONDA GX120 gasoline engine that incorporates a low “Oil Alert Feature”.The drive shaft of the engine is coupled to an offset connecting rod that is coupled to a flexible diaphragm. The connecting rod alternately raises (expands) and lowers (contracts) the diaphragm at a rate of 60 cycles per minute at maximum engine RPM (2,750).

Oil Alert Feature

In the event of low oil or no oil, the HONDA GX120 engine has a built-in oil alarm engine shut-down feature. In the event the oil level is low the engine will automatically shut-down.

Suction Lift

This pump is intended to be used for dewatering applications and is capable of suction lifts up to 25 feet at sea level. For optimal suction lift performance keep the suction hose or line as short as possible. In general always place the pump as close to the water as possible.

Pump Support

The pump should always be placed on solid stationary ground in a level position.

NEVER place the pump on soft soil. The suction hose or pipe connection should always be checked for tightness and leaks. A small suction leak in the hose or fittings could prevent the pump from priming.

Elevation

Higher elevations will effect the performance of the pump. Due to less atmospheric pressure at higher altitudes, pumps DO NOT have the priming ability that they have at sea level. This is due to the “thinner air” or lack of oxygen at higher altitudes.

A general rule of thumb is that for every 1,000 feet of elevation above sea level a pump will lose one foot of priming ability.

For example, in Flagstaff, Arizona where the elevation is approximately 7,000 feet, the pump would have a suction lift of only 18 feet rather than the 25 feet at sea level. Table 3 shows suction lift at various elevations.

Table 4. Suction Lift at Various Elevations

Altitude

 

 

Suction Lift in Feet (Meters)

 

 

Feet (Meters)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sea Level

10.0 (3.048)

 

15.0

(4.572)

20.0 (6.096)

 

25.0 (7.620)

 

 

 

 

 

 

 

 

 

 

2,000 (610)

8.80

(2.680)

 

13.2

(4.023)

17.6

(5.364)

 

22.0 (6.705)

 

 

 

 

 

 

 

 

 

 

 

4,000 (1,219)

7.80

(2.377)

 

11.7

(3.566)

15.6

(4.754)

 

19.5

(5.943)

 

 

 

 

 

 

 

 

 

 

 

6,000 (1,829)

6.90

(2.103)

 

10.4

(3.169)

13.8

(4.206)

 

17.3

(5.273)

 

 

 

 

 

 

 

 

 

 

8,000 (2,438)

6.20

(1.889)

 

9.30 (2.834)

12.4

(3.779)

 

15.5

(4.724)

 

 

 

 

 

 

 

 

 

 

10,000 (3,048)

5.70

(1.737)

 

8.60 (2.621)

11.4

(3.474)

 

14.3

(4.358)

 

 

 

 

 

 

 

 

 

 

 

Table 4 shows percentage drops in performance as elevation increases.

Table 5. Performance Loss at Various

Elevations

Altitude

Discharge Flow

Discharge Head

Feet (Meters

 

 

 

Sea Level

100%

100%

 

 

 

2,000 (610)

97%

95%

 

 

 

4,000 (1,219)

95%

91%

 

 

 

6,000 (1,829)

93%

87%

 

 

 

8,000 (2,438)

91%

83%

 

 

 

10,000 (3,048)

88%

78%

 

 

 

PAGE 12 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (10/27/11)

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Contents Models MQD2H MQD3H Proposition 65 Warning Page MQ-D2H/D3H Gasoline Powered Diaphragm Pumps Table of ContentsParts Ordering Procedures Ordering parts has never been easierSafety Information Safety MessagesGeneral Safety Pump Safety Lifting Safety Specifications Pump SpecificationsDimensions MQ-D2HMQ-D3H General Information ApplicationComponents Contact your nearest MultiquipBasic Engine Initial ServicingInspection InspectionSetup Handle InstallationMechanical seal to prevent water Operation Starting the Engine Honda engineNormal Shutdown Maintenance Pump Vacuum TestAltitude. See Tables 4 Rotation of Suction and Discharge Ports Seized Plunger Engine Maintenance Schedule Daily Preparation for LONG-TERM Storage Pump StorageTroubleshooting Engine TroubleshootingEngine Troubleshooting Pump Troubleshooting Explanation of Code in Remarks Column Xxxxx only Not Used onQty Description Name Plate and Decals Assy Nameplate and Decals AssyDECAL, Grease Monthly DECAL, MQ LogoMQD2H Waterbox and Flap Valve Assy Waterbox and Flap Valve Assy -INCHSuction Priming Chamber Priming PlugPrimimg Plug Gasket Flapper Valve AssyMQD2H -PUMP Assy Pump Assy -INCHInternal Retaining Ring 1-1/2 Plunger ARMCrank OIL SealHANDLE, Engine and Wheel Assy -INCH MQD2H -HANDLE, ENGINE, and Wheel Assy MQD3H -WATERBOX and Flap Valve Assy 212300001 MQD3H Pump Assy Pump Assy -INCH170400200 MQD3H HANDLE, ENGINE, and Wheel Assy MQD3H HANDLE, ENGINE, and Wheel Assy Engine Mount TBD BoltHonda GX120K1QX2 Engine AIR Cleaner Assy AIR Cleaner AssyGROMMET, AIR Cleaner COLLAR, AIR CleanerCollar B, AIR Cleaner GASKET, ElbowHonda GX120K1QX2 Engine Camshaft Assy Camshaft AssySPRING, Weight Return ROD, PushARM, Valve Rocker LIFTER, ValveHonda GX120K1QX2 Engine Carburetor Assy Carburetor AssyPLATE, Lever Setting Gasket SETValve SET, Float Float SETHonda GX120K1QX2 Engine Control Assy Control AssyARM, Governor ROD, GovernorSPRING, Governor SPRING, Throttle ReturnHonda GX120K1QX2 Engine Crankcase Cover Assy Crankcase Cover AssyGASKET, Case Cover GASKET, OIL Filler CAPBEARING, Radial Ball PIN A, DowelHonda GX120K1QX2 Engine Crankshaft Assy Crankshaft AssyCRANKSHAFT, H-TYPE Honda GX120K1QX2 Engine Cylinder Barrel Assy Cylinder Barrel AssyWEIGHT, Governor PIN, Governor WeightSLIDER, Governor SHAFT, Governor ARMHonda GX120K1QX2 Engine Cylinder Head Assy Cylinder Head AssyGUIDE, Valve OS Optional CLIP, Valve GuideGASKET, Cylinder Head COVER, HeadHonda GX120K1QX2 Engine FAN Cover Assy FAN Cover AssyGROMMET, Adjusting Cover WIRE, Stop Switch 370MMCOVER, FAN *NH1* Black PLATE, Side OIL AlertHonda GX120K1QX2 Engine Flywheel Assy Flywheel AssyFAN, Cooling PULLEY, StarterFlywheel NUT, Special 14MMHonda GX120K1QX2 Engine Fuel Tank Assy Fuel Tank AssyRUBBER, Supporter 107MM JOINT, Fuel TankTANK, Fuel *NH1* Black GASKET, Fuel Filler CAPHonda GX120K1QX2 Engine Ignition Coil Assy Ignition Coil AssyCoil ASSEMBLY, Ignition Honda GX120K1QX2 Engine Muffler Assy Muffler AssyMuffler PROTECTOR, MufflerGASKET, Muffler SCREW, TappingHonda GX120K1QX2 Engine Piston Assy Piston AssyBOLT, Connecting ROD Ring SET, Piston StandardPISTON, Standard PISTON, OSHonda GX120K1QX2 Engine Recoil Starter Assy Recoil Starter AssySCREW, Setting REEL, Recoil StarterRATCHET, Starter GUIDE, RatchetHonda GX120K1QX2 Engine Gasket KIT Assy Gasket KIT Assy06111ZH7405 Honda GX120K1QX2 Engine Labels Assy Labels AssyEmblem LABEL, CautionMARK, Choke MARK, OIL Alert ETerms and Condition of Sale Parts Freight PolicyPage HERE’S HOW to GET Help

MQD2H specifications

The Multiquip MQD2H is a versatile and robust diesel-powered generator designed to cater to a wide range of applications, making it a staple for construction sites, emergency backup, and outdoor events. Engineered with advanced technologies, this generator is built to deliver reliable power and withstand challenging environments.

At the heart of the MQD2H is a powerful, fuel-efficient diesel engine that ensures long operational hours with minimal downtime. This efficiency is crucial for projects requiring continuous power supply. Equipped with a large fuel tank, the MQD2H can operate for extended periods without the need for frequent refueling, enhancing productivity on the job site.

One of the standout features of the MQD2H is its robust construction. The generator is housed in a durable frame that protects it from physical damage and harsh weather conditions. Its compact design allows for easy transportation and maneuverability, making it ideal for various locations. Additionally, the generator is equipped with advanced soundproofing technology, reducing operational noise levels and making it suitable for use in noise-sensitive environments.

The MQD2H is designed with user convenience in mind. It features an intuitive control panel that provides easy access to vital operational information, allowing users to monitor the generator's performance at a glance. The control panel includes circuit breakers, start/stop switches, and hour meters, ensuring that operators have full control over the generator’s functionality.

Safety is also a priority with the Multiquip MQD2H. The generator incorporates automatic shutdown features for low oil pressure and high engine temperature, protecting the unit from potential damage. This built-in safety mechanism provides peace of mind for operators, knowing that the generator is safeguarded against operational hazards.

Furthermore, the MQD2H complies with emission regulations, making it an environmentally friendly choice among generators. The design includes technologies that minimize harmful emissions without compromising power output, adhering to industry standards and promoting cleaner operation.

In conclusion, the Multiquip MQD2H is a reliable, durable, and efficient generator ideal for a multitude of applications. With its powerful diesel engine, user-friendly controls, enhanced safety features, and commitment to environmental sustainability, it stands out as a top choice for professionals seeking dependable power solutions in demanding conditions.
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