Power Plant, Oil Alert Feature, Suction Lift

MQ-D206H— GENERAL INFORMATION

APPLICATION

The MQ Model D206H diaphragm pump is designed to be used for de-watering applications. The suction and discharge ports on the D206H 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).

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 an 5.5 horsepower air cooled, 4-stroke, single cylinder HONDA GX-120gasoline 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 between 40 and 65 strokes per minute depending on engine speed.

Oil Alert Feature

In the event of low oil or no oil, the HONDA GX-120 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 3. Suction Lift at Various Elevations

Altitude			Suction Lift in Feet (Meters)
Feet (Meters)			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 4. Performance Loss at Various

Elevations

Altitude	Discharge Flow	Discharge Head
Feet (Meters	Discharge Flow	Discharge Head

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 — MQ-D206H DIAPHRAGM PUMP — PARTS MANUAL — REV. #0 (12/15/03)

MQ- D206H specifications

The Multiquip MQ-D206H is a cutting-edge, high-performance diesel engine generator designed to provide reliable power for a variety of applications, including construction sites, outdoor events, and emergency power needs. This generator stands out in the market due to its robust design, advanced features, and high efficiency, making it a preferred choice among professionals in various industries.

One of the key features of the MQ-D206H is its powerful and durable 206cc diesel engine. This engine is engineered to deliver consistent power output while maintaining excellent fuel efficiency, allowing users to operate the generator for extended periods without the need for frequent refueling. The MQ-D206H is capable of producing up to 6,000 watts of continuous power, making it suitable for running multiple tools and equipment simultaneously.

The generator is equipped with a large fuel tank that offers extended runtime, ensuring that users can rely on it during long working hours without interruptions. Its compact and portable design, complemented by durable wheels and a sturdy frame, allows for easy transportation and setup in various locations. This portability makes it an ideal choice for both stationary use and on-the-go power requirements.

In terms of technology, the Multiquip MQ-D206H features advanced noise reduction technologies, making it one of the quieter generators in its class. The built-in sound attenuated enclosure significantly reduces operational noise, helping to maintain a quieter environment in residential areas or during outdoor events.

Moreover, the MQ-D206H includes innovative safety features such as low oil shutoff and over-current protection, which help safeguard the engine and connected equipment from damage. The user-friendly control panel offers easy access to essential functions, including voltage selection and circuit breakers, allowing for a straightforward operation.

Construction professionals and event organizers will appreciate the high-quality electrical components within the MQ-D206H, which are designed to deliver clean and stable power, ensuring that sensitive electronic devices are protected from voltage surges.

In summary, the Multiquip MQ-D206H is a reliable and versatile diesel generator that excels in performance, fuel efficiency, and portability. With its advanced features and rugged design, it caters to a wide range of power needs, making it an indispensable tool for both professional and recreational users.