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OPERATION AND PARTS MANUAL
MODELS
MQD2H
MQD3H
DIAPHRAGM PUMPS
(Honda GX120UT1QX2 Gasoline Engine)
Revision #7 (05/24/13)
To find the latest revision of this
publication, visit our website at:
www.multiquip.com
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
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PROPOSITION 65 WARNING PAGE 2 — MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13)
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NOTES MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 3
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TABLE OF CONTENTS HONDA GX120UT1QX2 MQD2H/D3H Gasoline Engine Powered Diaphragm Air Cleaner Assembly......................................... 46-47 Pumps Camshaft Assembly ........................................... 48-49 Proposition 65 Warning ............................................. 2 Carburetor Assembly ......................................... 50-51 Table of Contents ...................................................... 4 Control Assembly ...............................................
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PARTS ORDERING PROCEDURES Ordering parts has never been easier! Choose from three easy options: Effective: st January 1 , 2006 Best Deal! Order via Internet (Dealers Only): If you have an MQ Account, to obtain a Username Order parts on-line using Multiquip’s SmartEquip website! and Password, E-mail us at: parts@multiquip. com. ■ View Parts Diagrams To obtain an MQ Account, contact your ■ Order Parts District Sales Manager for more information. ■ Print Specification Information Use the int
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SAFETY INFORMATION Do not operate or service the equipment before reading Potential hazards associated with the operation of this the entire manual. Safety precautions should be followed equipment will be referenced with hazard symbols which at all times when operating this equipment. may appear throughout this manual in conjunction with Failure to read and understand the safety safety messages. messages and operating instructions could result in injury to yourself and others. SAFETY MESSAGE
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SAFETY INFORMATION GENERAL SAFETY NOTICE CAUTION This equipment should only be operated by trained and qualified personnel 18 years of age and older. NEVER operate this equipment without proper protective clothing, shatterproof glasses, respiratory protection, Whenever necessary, replace nameplate, operation and hearing protection, steel-toed boots and other protective safety decals when they become difficult read. devices required by the job or city and state regulations. Manufacturer
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SAFETY INFORMATION PUMP SAFETY ALWAYS flush pump (clean) after use when pumping water concentrated with heavy debris. It is very important DANGER to always flush the pump before turning it off to prevent clogging. NEVER operate the equipment in an explosive atmosphere or near combustible materials. An Fix damage to machine and replace any broken parts explosion or fire could result causing severe immediately. bodily harm or even death. ALWAYS store equipment properly when it is not being
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NOTES MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 9
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SPECIFICATIONS Table 1. Specifications (Pump) Tp ypeMp MQD2H Diaphragm Pump Q-D2H Diaphragm Pum MMQD3H Diaphragm Pump Q-D3H Diaphragm Pum Suction & Discharge 2) .00 in. (50.8 mm.) 3.00 in. (76.2 mm. Size Maximum Pumping 3,000 gallons/hour 5,400 gallons/hour Pump Capacity (11,340 liters/hour) (20,456 liters/hour) M) ax. Solids Diameter1) -1/2 in. (38.1 mm 1-5/8 in (41.275 mm M) ax Lift2) 6 ft. (7.92 meters 26 ft. (7.92 meters M) ax. Head2) 5 ft. (7.62 meters 25 ft. (7.62 meters 140 lbs. (63 Kg.)
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DIMENSIONS MQ-D2H/D3H — DIMENSIONS (PUMP) Figure 1. MQD2H/D3H Pump Dimensions Table 3. Dimensions A B C D E MODEL LENGTH HEIGHT WIDTH DISCHARGE SUCTION 39 in. 27.53 in. 25.68 in. 7.34 in. 5.62 in. MQD2H MQ-D2H (99.06 cm.) (69.93 cm.) (65.23 cm.) (18.64 cm.) (14.27 cm.) 41.5 in. 22 in. 30 in. 6.2 in. 6.3 in. MQD3H MQ-D3H (105.41 cm.) (55.88 cm.) (76.2 cm.) (15.75 cm.) (16 cm.) MQD2H/3H DIAPHRAGM PUMPS — OPERATION AND PARTS MANUAL — REV. #7 (05/24/13) — PAGE 11
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MQ-D2H/D3H — GENERAL INFORMA GENERAL INFORMATION TION APPLICATION Elevation The MQD2H and MQD3H diaphragm pumps are designed to Higher elevations will effect the performance of the pump. Due to be used for de-watering applications. The suction and discharge less atmospheric pressure at higher altitudes, pumps DO NOT ports on the MQD2H use a 2-inch diameter opening, which allows have the priming ability that they have at sea level. This is due to the pump to pump at rate of approximately 3,000
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COMPONENTS MQ-D2H/D3H — PUMP COMPONENTS Figure 2 shows a typical application using the MQD2H or MQD3H diaphragm pump. Please note that this pump is intended for the removal of clean water and water containing some debris and solids. Maximum size of solids for the MQD2H should not exceed 1- 1/2 inches (38.1 mm) in diameter, and maximum size of solids for the MQD3H should not exceed 1-5/8 inches (41.275) in diameter. DO NOT set strainer on bottom of water bed. Placing the strainer above the water
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BASIC ENGINE Figure 3. Engine Controls and Components INITIAL SERVICING 6. Choke Lever – Used in the starting of a cold engine, or in The engine (Figure 3) must be checked for proper lubrication and cold weather conditions. The choke enriches the fuel filled with fuel prior to operation. Refer to the Honda manufacturers mixture. engine manual for instructions and details for operation and 7. Air Cleaner – Prevents dirt and other debris from entering servicing. the fuel system. Remove wing-n
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INSPECTION UPPER LIMIT CAUTION - Read Manual Please read the entire maintenance section in this manual before servicing the pump. In addition for operator safety, please read all safey messages at the begining of the manual LOWER LIMIT Inspection Figure 5. Engine Oil Dipstick (Oil Level) 1. Clean the pump, removing dirt and dust, particularly the engine cooling air inlet, carburetor and air cleaner. Table 6. Oil Type 2. Check the air filter for dirt and dust. If air filter is dirty, replace Se
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SETUP Handle Installation Before Starting 1. Read safety instructions at the CAUTION - Handle Mounting beginning of manual. Failure to follow instructions and properly install handle, 2. Place pump as near to water as mounting screws with washers, and torque mounting possible, on a firm flat, level surface. screws, will result in damage or premature failure to gearbox, base or other pump components. WARNING - Fill Cap The MQD2H/D3H diaphragm pumps are completely DO NOT open fill cap if pump is h
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SETUP Diaphragm pumps will handle fluids CAUTION - Strainer containing considerable solids (see The strainer should be positioned so it will remain completely Table 1 for maximum solids diameter), NOTE under water. Running the pump with the strainer above however, if the mixture is too heavy to be pumped, water must be added until water for long periods can damage the pump. the mixture becomes sufficently fluid for pumping. CAUTION - Flammable Fluids Connecting Rod Bearing Lubrication DO NOT pum
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OPERATION MQ-D2H/D3H — OPERATION CAUTION - Read Manual DO NOT attempt to operate the pump until the Safety, General Information and Inspection sections of this manual have been read and thoroughly understood. CAUTION - General Safety Precautions NEVER operate the pump in a confined area or enclosed area structure that does Figure 11. Engine Choke Lever (CLOSED) not provide ample free flow of air. 4. Place the choke lever (Figure 12) in the "OPEN " position if starting a warm engine or the temp
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MQ-D2H/D3H —OPERA OPERATION TION 7. If the engine has started, slowly return the choke lever Stopping The Engine (Figure 15 ) to the “OPEN” position. If the engine has not Normal Shutdown started repeat steps 1 through 6. 1. Move the throttle lever to the IDLE position (Figure 17) and run the engine for three minutes at low speed. Figure 17. Throttle Lever (Idle) 2. After the engine cools, turn the engine ON/OFF switch to the “OFF” position (Figure 18). Figure 15. Choke Lever (Open) 8. Befor
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MAINTENANCE Pump Vacuum Test Flapper Valve Replacement 1. Remove the two bolts that secure the suction port To perform the pump vacuum test do the following: chamber (Figure 20) to the pump well. Remove suction port chamber. Replace valves as required and 1. Start the engine as outlined in the initial start-up section, reassemble. and wait for the pump to begin pumping. 2 Check and make sure that there are no air leaks between the vacuum tester (Figure 21) and the inlet port on the pump. If air
