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OPERATION MANUAL
MODEL QP3THX
TRASH PUMP
(HONDA GX240RT2QMTNH1 GASOLINE ENGINE)
Revision #2 (06/03/20)
To find the latest revision of this publication or associated parts manual, visit our website at: www.multiquip.com
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
PROPOSITION 65 WARNING
PAGE 2 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
QP3THX Trash Pump
Proposition 65 Warning ........................................... 2
Safety Information ................................................ 4-8
Specifications (Pump) .............................................. 9
Specifications (Engine) .......................................... 10
General Information ............................................... 11
Pump Components ........................................... 12-13
Basic Engine .......................................................... 14
Inspection (Engine) ................................................ 15
Setup ..................................................................... 16
Operation .......................................................... 17-18
Maintenance (Pump) ........................................ 19-20
Maintenance (Engine) ...................................... 21-23
Storage .................................................................. 24
Troubleshooting (Engine) ....................................... 26
Troubleshooting (Engine/Pump) ............................ 27
NOTICE
Specifications and part numbers are subject to change without notice.
TABLE OF CONTENTS
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 3
Do not operate or service the equipment before reading the entire manual. Safety precautions should be followed at all times when operating this equipment.
Failure to read and understand the safety messages and operating instructions could result in injury to yourself and others.
SAFETY MESSAGES
The four safety messages shown below will inform you about potential hazards that could injure you or others. The safety messages specifi cally address the level of exposure to the operator and are preceded by one of four words:
DANGER, WARNING, CAUTION
or
NOTICE.
SAFETY SYMBOLS
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,
COULD
result in
MINOR
or
MODERATE INJURY.
NOTICE
Addresses practices not related to personal injury.
SAFETY INFORMATION
Potential hazards associated with the operation of this equipment will be referenced with hazard symbols which may appear throughout this manual in conjunction with safety messages.
PAGE 4 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
GENERAL SAFETY
CAUTION
NEVER
operate this equipment without proper protective clothing, shatterproof glasses, respiratory protection, hearing protection, steel-toed boots and other protective devices required by the job or city and state regulations.
NEVER
operate this equipment when not feeling well due to fatigue, illness or when under medication.
NEVER
operate this equipment under the infl uence of drugs or alcohol.
NOTICE
This equipment should only be operated by trained and qualifi ed personnel 18 years of age and older.
Whenever necessary, replace nameplate, operation and safety decals when they become diffi cult read.
Manufacturer does not assume responsibility for any accident due to equipment modifi cations. Unauthorized equipment modifi cation will void all warranties.
NEVER
use accessories or attachments that are not recommended by Multiquip for this equipment. Damage to the equipment and/or injury to user may result.
ALWAYS
know the location of the nearest
fi re extinguisher.
ALWAYS
know the location of the nearest
fi rst aid kit.
ALWAYS
know the location of the nearest phone or
keep a phone on the job site.
Also, know the phone numbers of the nearest
ambulance, doctor
and
fi re department.
This information will be invaluable in the case of an emergency.
SAFETY INFORMATION
PUMP SAFETY
DANGER
NEVER
pump volatile, explosive, fl ammable or low fl ash point fl uids. These fl uids could ignite or explode.
The engine fuel exhaust gases contain poisonous carbon monoxide. This gas is colorless and odorless, and can cause death if inhaled.
The engine of this equipment requires an adequate free fl ow of cooling air.
NEVER
operate this equipment in any enclosed or narrow area where free fl ow of the air is restricted. If the air fl ow is restricted it will cause injury to people and property and serious damage to the equipment or engine.
DANGEROUS
GAS FUMES
NEVER
operate the equipment in an explosive atmosphere or near combustible materials. An explosion or fi re could result causing severe
bodily harm or even death.
WARNING
NEVER
pump corrosive chemicals or water containing toxic substances. These fl uids could create serious health and environmental hazards. Contact local authorities for assistance.
NEVER
open the priming plug when pump is hot. Hot water inside could be pressurized much like the radiator of an automobile.
Allow pump to cool to the touch before loosening plug. The possibility exists of scalding, resulting in severe bodily harm.
NEVER
disconnect any
emergency or safety devices.
These devices are intended for operator safety.
Disconnection of these devices can cause severe injury, bodily harm or even death. Disconnection of any of these devices will void all warranties.
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 5
CAUTION
NEVER
lubricate components or attempt service on a running machine.
NEVER
block or restrict flow from discharge hose.
Remove kinks from discharge line before starting pump.
Operation with a blocked discharge line can cause water inside pump to overheat.
NOTICE
ALWAYS
fi ll the pump casing with water before starting the engine. Failure to maintain water inside the pump housing will cause severe damage to the pump and mechanical seal.
In winter drain water from pump housing to prevent freezing.
NEVER
start the pump with the clean-out cover removed.
The rotating impeller inside the pump can cut or sever objects caught in it. Before starting the pump, check that the clean-out cover is securely fastened.
ALWAYS
keep the machine in proper running condition.
ALWAYS
ensure pump is on level ground before use.
Fix damage to machine and replace any broken parts immediately.
ALWAYS
store equipment properly when it is not being used. Equipment should be stored in a clean, dry location out of the reach of children and unauthorized personnel.
SAFETY INFORMATION
ENGINE SAFETY
WARNING
NEVER
operate the engine with heat shields or guards removed.
DO NOT
remove the engine oil drain plug while the engine is hot. Hot oil will gush out of the oil tank and severely scald any persons in the general area of the pump.
CAUTION
NEVER
touch the hot exhaust manifold, muffl er or cylinder. Allow these parts to cool before servicing equipment.
NOTICE
NEVER
run engine without an air fi lter or with a dirty air fi lter. Severe engine damage may occur. Service air fi lter frequently to prevent engine malfunction.
NEVER
tamper with the factory settings of the engine or engine governor. Damage to the engine or equipment can result if operating in speed ranges above the maximum allowable.
PAGE 6 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
FUEL SAFETY
DANGER
DO NOT add fuel to equipment if it is placed inside truck bed with plastic liner. Possibility exists of explosion or fi re due to static electricity.
DO NOT
start the engine near spilled fuel or combustible fl uids. Fuel is extremely fl ammable and its vapors can cause an explosion if ignited.
ALWAYS
refuel in a well-ventilated area, away from sparks and open fl ames.
ALWAYS
use extreme caution when working with
fl ammable
liquids.
DO NOT
or hot.
fi ll the fuel tank while the engine is running
DO NOT
overfi ll tank, since spilled fuel could ignite if it comes into contact with hot engine parts or sparks from the ignition system.
Store fuel in appropriate containers, in well-ventilated areas and away from sparks and fl ames.
NEVER
use fuel as a cleaning agent.
DO NOT
smoke around or near the equipment. Fire or explosion could result from fuel vapors or if fuel is spilled on a hot engine.
SAFETY INFORMATION
BATTERY SAFETY (ELECTRIC START ONLY)
DANGER
DO NOT
drop the battery. There is a possibility that the battery will explode.
DO NOT
expose the battery to open fl ames, sparks, cigarettes, etc. The battery contains combustible gases and liquids. If these gases and liquids come into contact with a fl ame or spark, an explosion could occur.
WARNING
ALWAYS
wear safety glasses when handling the battery to avoid eye irritation.
The battery contains acids that can cause injury to the eyes and skin.
Use well-insulated gloves when picking up the battery.
ALWAYS
keep the battery charged. If the battery is not charged, combustible gas will build up.
DO NOT
charge battery if frozen. Battery can explode.
When frozen, warm the battery to at least 61°F (16°C).
ALWAYS
recharge the battery in a well-ventilated environment to avoid the risk of a dangerous concentration of combustible gases.
If the battery liquid (dilute sulfuric acid) comes into contact with
clothing or skin
, rinse skin or clothing immediately with plenty of water.
If the battery liquid (dilute sulfuric acid) comes into contact with
eyes
, rinse eyes immediately with plenty of water and contact the nearest doctor or hospital to seek medical attention.
CAUTION
ALWAYS
disconnect the
NEGATIVE battery terminal
before performing service on the equipment.
ALWAYS
keep battery cables in good working condition.
Repair or replace all worn cables.
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 7
TRANSPORTING SAFETY
CAUTION
NEVER
allow any person or animal to stand underneath the equipment while lifting.
NOTICE
Before lifting, make sure that the equipment parts (hook and vibration insulator) are not damaged and screws are not loose or missing.
Always make sure crane or lifting device has been properly secured to the lifting bail (hook) of the equipment.
ALWAYS
shutdown engine before transporting.
NEVER
lift the equipment while the engine is running.
Tighten fuel tank cap securely and close fuel cock to prevent fuel from spilling.
Use adequate lifting cable (wire or rope) of suffi cient strength.
Use one point suspension hook and lift straight upwards.
SAFETY INFORMATION
ENVIRONMENTAL SAFETY
NOTICE
Dispose of hazardous waste properly.
Examples of potentially hazardous waste are used motor oil, fuel and fuel fi lters.
DO NOT
use food or plastic containers to dispose of hazardous waste.
DO NOT
pour waste, oil or fuel directly onto the ground, down a drain or into any water source.
DO NOT
lift machine to unnecessary heights.
ALWAYS
tie down equipment during transport by securing the equipment with rope.
PAGE 8 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
A
SPECIFICATIONS (PUMP)
Pump
Dry Net Weight
Table 1. Specifications (Pump)
Model
Type
Suction
Discharge Size
Maximum Pumping Capacity
Max. Solids Diameter
Maximum Sunction Lift
Max. Head
Max. Pressure
QP3THX
Trash Pump
3.0 in. (76 mm.)
3.0 in. (76 mm.)
396 gallons/minute
(1,500 liters/minute)
1.5 in. (38.1 mm)
25 ft. (7.6 m)
95 ft. (29.0 m)
41 psi (283 kPa)
176 lbs. (80 kg.)
B
Table 2. Dimensions
Reference
Letter
Dimension in. (mm)
A 22.9 (582)
B
C
24.0 (610)
29.3 (745)
Figure 1. QP3THX Dimensions
C
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 9
SPECIFICATIONS (ENGINE)
Table 3. Specifications (Engines)
Model
HONDA
GX240RT2QMTNH1
Engine
Type
Bore x Stroke
Displacement
Max Output
Fuel Tank Capacity
Air-cooled 4 stroke, Single
Cylinder, OHV,
Horizontal Shaft
Gasoline Engine
3.03 in. x 2.30 in.
(77 mm x 58 mm)
270 cc (16.5 cu-in)
7.9 HP*/ 3,600 RPM
Approx.4.2 U.S. Gallons
(16 Liters)
Fuel
Lube Oil Capacity
Speed Control Method
Starting Method
Unleaded Automobile Gasoline
1.16 quarts (1.10 liters)
Centrifugal Fly-weight Type
Recoil Start
Dimension
(L x W x H)
Dry Net Weight
15.7 x 17.0 x 11.9 in.
(400 x 432 x 302 mm)
47.0 lbs (21.3 kg)
*
Engine power ratings are calculated by the individual engine manufacturer and the rating method may vary among engine manufacturers. Multiquip Inc. and its subsidiary companies makes no claim, representation or warranty as to the power rating of the engine on this equipment and disclaims any responsibility or liability of any kind whatsoever with respect to the accuracy of the engine power rating. Users are advised to consult the engine manufacturer’s owners manual and its website for specific information regarding the engine power rating.
Model :
Performance Curve
QP3THX
Engine : HONDA GX240 7.9 HP @ 3,600 RPM
Suction : 3 Inch Discharge : 3 Inch
TOTAL HEAD
METERS FT
.
100
30
3.3 FT 10 FT 16.7 FT 23.3 FT
90
25
80
20
15
10
5
20
10
GALS/MIN
0
LITERS/MIN
0
0
50
40
30
70
60
50
23.3 FT
16.7 FT
100 150 200 250
500 1000
Figure 2. QP3THX Performance Curve
300
10 FT
350
3.3 FT
400
1500
PAGE 10 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
GENERAL INFORMATION
APPLICATION
The Multiquip QP3THX Trash Pump is designed to be used for dewatering applications. Both the suction and discharge ports on the QP3THX trash pump use a 3-inch diameter opening,which allows the pump to pump at a rate of approximately 396 gallons/minute (gpm) or 1,500 liters/ minute (lpm).
This Wet Primed pump requires that the pump casing is first filled with water to assist with initial self-priming operations. Once a partial vacuum is created within the unit, the reduced atmospheric pressure allows water to flow through the suction line and the centrifugal force of the impeller/volute assembly permits water to be expelled from the discharge ports.
TRASH PUMP
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 4 shows suction lift at various elevations.
Trash pumps derive their name from their ability to handle a greater amount of debris and solids than standard centrifugal pumps. These pumps generally handle solids up to 1/2 the size of the discharge opening making them less likely to clog. Also trash pumps are capable of handling water with 25% solids by weight.
The advantage of using a trash pump is that it can be quickly and easily disassembled in the field "without tools" and easily cleaned when clogged.
POWER PLANT
This trash pump is powered by a 7.9 horsepower air cooled
4-stroke, single cylinder HONDA GX240 gasoline engine that incorporates a low “Oil Alert Feature.”
OIL ALERT FEATURE
In the event of low oil or no oil, the HONDA GX240 engine has a built-in oil alarm engine shut-down feature. In the event the oil level is low the engine will automatically shutdown.
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
Table 4. Suction Lift at Various Elevations
Altitude
Feet
(Meters)
Sea Level
Suction Lift in Feet (Meters)
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 5 shows percentage drops in performance as
elevation increases.
Table 5. Performance Loss at Various Elevations
Altitude
Feet (Meters)
Sea Level
2,000 (610)
4,000 (1,219)
6,000 (1,829)
8,000 (2,438)
10,000 (3,048)
Discharge Flow Discharge Head
100%
97%
95%
93%
91%
88%
100%
95%
91%
87%
83%
78%
The pump should always be placed on solid stationary ground in a level position.
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 11
3
5
1
3
2
6
10
9
8
7
PUMP COMPONENTS
4
Figure 3. QP3THX Key Components
PAGE 12 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
Figure 3 shows key components of the QP3THX.
1.
Pump
— The model QP3THX is a 3-inch trash pump used in general dewatering applications. Typical dewatering applications consist of: manholes, septic tanks, ponds, ditch water, silt water, muddy water, and water with debris.
2.
Fill Cap
— Prior to operation, the pump casing
MUST
BE
filled with water. Remove this cap to add water to the pump. After the initial prime, a sufficient amount of water will be retained in the casing so that the operator will not need to re-prime later.
3.
Discharge Ports
— The pump is equipped with left and right side discharge ports. These ports are 3” male
NPT thread and can accommodate discharge hose or pipe. Quick disconnect (Cam & Groove lock) hoses can be fitted onto the discharge ports with an optional coupler (A300A).
4.
Discharge Hose
— This pump is fitted with 3” male
NPT thread discharge ports and can accommodate either threaded discharge hose or pipe. Quick disconnect (Cam & Groove lock) hoses can be fitted onto the discharge ports with an optional coupler
(A300A). Make sure hoses lays flat and are not kinked.
Contact MQ Sales Department for ordering information.
5.
Suction Port
— This pump is fitted with a 3” male
NPT thread suction port and can accommodate either a threaded or quick disconnect (Cam & Groove lock) hose. For quick disconnect connections, an optional coupler (A300A) is necessary. Contact MQ Parts
Department for ordering assistance.
PUMP COMPONENTS
6.
Suction Hose
— Use only recommended suction hoses. This pump is fitted with a 3” male NPT thread suction port and can accommodate threaded or quick disconnect (Cam & Groove lock) suction hose. Cam
& Groove lock hose can be fitted onto the suction port with an optional coupler (A300A). Make sure the suction hose is not kinked. Contact MQ Sales
Department for ordering information.
7.
Clean-out Cover
— When the pump is subjected to applications where large quantity of debris is present, it may be necessary to clean out the casing cavity of large rocks and such that have not passed through the pump. To open and gain access to the pump’s cleanout cavity, loosen the four locking knobs (item 9). Grip the cover handles and twist counterclockwise. Once the cover is clear of the four knob fasteners, pull the cover out towards you.
8.
Drain Plug
— After usage, and for storage, remove this plug and drain all water from the pump casing.
9.
Locking Knobs
— Turn both knobs counterclockwise to release cover. Turn clockwise to secure clean-out cover.
10.
Strainer
— Always attach a strainer to bottom side of the suction hose to prevent large objects and debris from entering the pump. Strainer should be positioned so that it will remain completely under water. Running the pump with the strainer above water for long periods can damage pump.
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 13
BASIC ENGINE
INITIAL SERVICING
Figure 4. Engine Controls and Components
6.
Choke Lever —
Used in the starting of a cold engine, or in cold weather conditions. The choke enriches the fuel mixture.
The engine (See Figure 4) must be checked for proper
lubrication and filled with fuel prior to operation. Refer to the manufacturers engine manual for instructions and details of operation and servicing. The engine shown above is a
HONDA engine, operation for other types of engines may vary somewhat.
7.
Air Cleaner —
Prevents dirt and other debris from entering the fuel system. Remove wing-nut on top of air filter cannister to gain access to filter element.
NOTICE
1.
Fuel Filler Cap —
Remove this cap to add unleaded gasoline to the fuel tank. Make sure cap is tightened securely.
DO NOT
over fill.
DANGER
Operating the engine without an air filter, with a damaged air filter, or a filter in need of replacement will allow dirt to enter the engine, causing rapid engine wear.
Adding fuel to the tank should be done only when the engine is stopped and has had an opportunity to cool down. In the event of a fuel spill,
DO NOT
attempt to start the engine until the fuel residue has been completely wiped up, and the area surrounding the engine is dry.
WARNING
Engine components can generate extreme heat. To prevent burns,
DO NOT
touch these areas while the engine is running or immediately after operating.
NEVER
operate the engine with the muffler removed.
2.
Throttle Lever —
Used to adjust engine RPM speed
(lever advanced forward
SLOW
, lever back toward operator
FAST
).
3.
Engine ON/OFF Switch —
ON position permits engine starting, OFF position stops engine operations.
4.
Recoil Starter (pull rope) —
Manual-starting method.
Pull the starter grip until resistance is felt, then pull briskly and smoothly.
5.
Fuel Valve Lever — OPEN
to let fuel flow,
CLOSE
to stop the flow of fuel.
8.
Spark Plug —
Provides spark to the ignition system.
Set spark plug gap to 0.6 - 0.7 mm (0.028 - 0.031 inch).
Clean spark plug once a week.
9.
Muffler —
Used to reduce noise and emissions.
10.
Fuel Tank —
Holds unleaded gasoline. For additional information refer to engine owner's manual.
PAGE 14 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
CAUTION
DO NOT
attempt to operate the pump untilthe Safety Information, General
Information and Inspection sections of this manual have been read and thoroughly understood.
INSPECTION (ENGINE)
3. Insert and remove the dipstick without screwing it into the filler neck. Check the oil level shown on the dipstick.
4. If the oil level is low (See Figure 6), fill to the edge
of the oil filler hole with the recommended oil type
(Table 6). Maximum oil capacity is 1.16 quarts
(1.1 liters).
BEFORE STARTING
1. Read safety instructions at the beginning of manual.
2. Clean the pump, removing dirt and dust, particularly the engine cooling air inlet, carburetor and air cleaner.
3. Check the air filter for dirt and dust. If air filter is dirty, replace air filter with a new one as required.
4. Check carburetor for external dirt and dust. Clean with dry compressed air.
5. Check fastening nuts and bolts for tightness.
Engine Oil Check
1. To check the engine oil level, place the pump on secure level ground with the engine stopped.
2. Remove the filler dipstick from the engine oil filler hole
(See Figure 5) and wipe clean.
DIPSTICK
Figure 5. Engine Oil Dipstick (Removal
UPPER LIMIT
LOWER LIMIT
Figure 6. Engine Oil DipStick (Oil Level
Season
Summer
Spring/Fall
Winter
Table 6. Oil Type
Temperature Oil Type
25°C or Higher SAE 10W-30
25°C~10°C SAE 10W-30/20
0°C or Lower SAE 10W-10
DANGER
Motor fuels are highly flammable and can be dangerous if mishandled.
DO NOT
smoke while refueling.
DO NOT
attempt to refuel the pump if the engine is
hot! or running.
Fuel Check
1. Remove the gasoline cap located on top of fuel tank.
2. Visually inspect to see if the fuel level is low. If fuel is low, replenish with unleaded fuel
.
3. When refueling, be sure to use a strainer for filtration.
DO NOT
top-off fuel. Wipe up any spilled fuel
immediately!
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 15
1. It is advantageous to place the pump as close as
possible to the water source (Figure 7) on a solid, level
operating surface. The most critical factor for successful pump operations is not to exceed 25’ Total Suction Lift
(at sea level).
2. Ensure that the pump has the proper level of fuel and engine oil.
3. Initially prime the pump by removing the fill cap (see
Figure 3) and filling the casing with water. If the pump
casing is not filled with water prior to operations, it will not be able to start the pumping process and you risk overheating the mechanical seal assembly.
4. Attach the proper suction and discharge hoses to the pump ports. Ensure that the hose O-rings are in place, and that hose do not show any cracks, gouges, or holes. The hoses should not be kinked, and must be secured tightly to their respective ports.
5. A proper suction hose is commonly reinforced with rigid
PVC helix and is specifically designed to safeguard against collapsing during pumping operations. It is essential that the pump utilize a suction hose with the same diameter as the suction port.
6. Ensure that the strainer is placed on the end of the suction hose, and that the hose is placed in the water source in such a manner as not to bury the strainer into sand or silt.
SETUP
CAUTION
The strainer should be positioned so it will remain completely
under water
. Running the pump with the strainer above water for long periods can damage the pump.
7. The discharge side may utilize proper discharge hoses,
PVC pipe, or concrete pipe.
8. Check that discharge hoses lay flat and as straight as possible. Remove any sharp bends or kinks from the hose so the water flow cannot be blocked.
9. Once the engine is started; and depending on the application set-up, the priming process will take a few moments before water begins to flow.
10. The performance of the pump (Flow, Head, Water
Velocity, and Pressure) is dependent on the many factors that surround the application. These factors include, but are not limited to: operating altitude, suction lift, discharge and suction hose diameter and length, overall friction loss coefficients, the specify gravity of the fluid to be pumped, the fluid temperature, and total discharge head.
Figure 7. Pump Placement
PAGE 16 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
CAUTION
DO NOT
attempt to start the engine unless the pump has previously been primed with water. Severe pump damage will occur if pump has not been primed.
STARTING THE ENGINE
1. Place the engine fuel valve lever (See Figure 8) to the
ON
position.
OPERATION
4. Place the
choke lever (See Figure 11) in the
OPEN
position if starting a warm engine or the temperature is warm.
CHOKE LEVER
FUEL VALVE
LEVER
CLOSE
OPEN
Figure 11. Engine Choke Lever (Open)
5. Place the engine
ON/OFF
the
ON
position.
OFF
ON
Figure 8. Engine Fuel Valve Lever (ON Position)
2. Move the throttle lever (See Figure 9) to idle position.
OFF
THROTTLE
LEVER
ON
ENGINE SWITCH
Figure 12. Engine ON/OFF Switch (ON Position)
6. Grasp the starter grip (See Figure 13) and slowly pull
it out. The resistance becomes the hardest at a certain position, corresponding to the compression point. Pull the starter grip briskly and smoothly for starting.
RUN IDLE
Figure 9. Throttle Lever (Idle Position
3. Place the choke lever (See Figure 10) in the
CLOSED
position if starting a cold engine.
CHOKE LEVER
CLOSE
OPEN
Figure 10. Engine Choke Lever (Closed)
STARTER GRIP
Figure 13. Starter Grip
7. If the engine has started and the choke lever was moved to the
CLOSED
position to start the engine, gradually move the choke lever to the
OPEN
position
(Figure 14) as the engine warms up. If the engine has
not started repeat steps 1 through 6.
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 17
CHOKE LEVER
OPERATION
STOPPING THE ENGINE
Normal Shutdown
1. Move the throttle lever to the
IDLE
position
(See Figure 14) and run the engine for three minutes at low speed.
CLOSE
OPEN
Figure 14. Choke Lever (Open)
8. Before the pump is placed in to operation, run the engine for several minutes. Check for fuel leaks, and noises that would associate with a lose component.
9. To begin pumping, place the throttle lever (See
RUN
position. If water is not flowing out of the discharge port, turn off the engine and check for and clear any obstructions within the suction hose.
THROTTLE
LEVER
RUN IDLE
Figure 16. Throttle Lever (Idle)
2. After the engine cools, turn the engine
ON/OFF
switch to the
OFF
position (See Figure 15).
THROTTLE
LEVER
OFF
ON
RUN IDLE
Figure 15. Throttle Lever (Run)
WARNING
Water must always be flowing through the pump casing while the engine is running. Loss of flow may be the result of a loss of prime, restricted water flow or a deadhead situation. Please note that in such a condition, water in the pump can reach temperatures of 150-200°F in 15 to 20 minutes. This can cause serious burns if this hot water comes into contact with unprotected skin.
Before touching or opening the fill plug or drain plug, first turn off the engine and allow the pump casing to cool to the touch, and then open the pump carefully.
Be cautious of any built up water pressure.
ENGINE SWITCH
Figure 17. Engine ON/OFF Switch (OFF)
3. Place the fuel shut-off lever (See Figure 16) in the
OFF
position
FUEL VALVE
LEVER
OFF
ON
Figure 18. Fuel Valve Lever (OFF)
Emergency Shutdown
CAUTION
ALWAYS
run engine at
full speed
while pumping.
1. Move the throttle lever quickly to the
IDLE
position, and place the engine
ON/OFF
switch in the
OFF
position.
PAGE 18 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
MAINTENANCE (PUMP)
PUMP VACUUM TEST
CAUTION
DO NOT
attempt to start the engine unless the pump has previously been
primed
with water. Severe pump damage will occur if pump has not been primed.
To perform the pump vacuum test do the following:
1. Remove the pump fill cap (See Figure 3), and fill the
pump with water.
2. Start the engine as outlined in the initial start-up section, and wait for the pump to begin pumping.
3. As shown in Figure 19, place a water hose inside
the discharge opening of the pump, and turn on the water. This flow of water into the discharge opening will
prevent
the pump from running dry.
4. Place the Pump Vacuum Tester (P/N 7000030) over the
pump suction (inlet) opening (See Figure 19) with the
vacuum gauge facing upwards. It may be necessary to apply a small amount of water around the rubber seal of the vacuum tester to make a good suction fit.
5. Check and make sure that there are no air leaks between the vacuum tester and the inlet port on the pump. If air leaks are present reseat vacuum tester.
.
6. Run the pump for a few minutes while monitoring the vacuum gauge. If the gauge indicates a reading between -25 and -20 in. Hg. (inches of mercury) then it can be assumed that the pump is working correctly.
NOTICE
25 in. Hg (inches of mercury) translates into 25 feet of lift at
sea level.
7. If the vacuum tester gauge indicates a reading below
-20 in. Hg, it can then be assumed that the pump is not functioning correctly, and corrective action needs to be taken.
8. To test the flapper valve, shutdown the engine. The vacuum tester should remain attached to the pump suction inlet port by vacuum. This indicates the pump's flapper valve is seating properly to hold water in the suction hose when the engine is stopped. This prevents backflow and allows for faster priming when the engine is restarted.
ADJUSTING IMPELLER CLEARANCE
1. If it is necessary to replace impeller or volute, be sure clearance between impeller and volute is adjusted
2. The impeller should be as close to the volute as possible without rubbing against it. Clearance is adjusted by adding or removing shims from behind the impeller.
3. Check clearance between impeller and insert by slowly pulling starter rope to turn impeller.
NOTICE
It is important not to remove too many shims or the clearance between the impeller and volute will become
too wide
and pump performance will be reduced.
Remember as the impeller wear down, additional shims may be required to maintain the clearance between the impeller and insert.
4. Check the impeller every six months for wear, and for clearance between the impeller face and the volute.
Also check the shaft seal for wear, as well as the shaft sleeve.
PUMP CLEANING
After pumping water containing large amounts of dirt and debris, perform the following:
1. Remove the drain plug from the pump housing
(Figure 3) and drain any water left in the pump.
2. See Components section, Clean-out Cover, for pump cleaning procedure.
3. Clean and remove dirt, debris from pump casing.
Inspect impeller and volute for wear. Replace any damaged or worn parts.
CAUTION
The impeller may develop sharp edges. Use extreme care when cleaning around the impeller to prevent being cut.
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 19
PLACE VACUUM TESTER
OVER PUMP SUCTION PORT
CAUTION
DO NOT
RUN PUMP
WITHOUT WATER.
MAINTENANCE (PUMP)
WATER SOURCE
DISCHARGE
PORT
DIRECTION OF
WATER FLOW
ACCEPTABLE READING IS
BETWEEN -25 AND -20 inHg
PUMP VACUUM TESTER
25in Hg TRANSLATES INTO 25 FEET
OF LIFT AT SEA LEVEL
Figure 19. Pump Vacuum Tester
PAGE 20 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
MAINTENANCE (ENGINE)
ENGINE MAINTENANCE
Perform engine maintenance procedures as referenced by Table 7 below:
Description (3) Operation
Engine Oil
Air Cleaner
All Nuts and
Bolts
CHECK
CHANGE
CHECK
CHANGE
Re-tighten If
Necessary
Spark Plug
Cooling Fins
Spark Arrester
Fuel Tank
CHECK-CLEAN
REPLACE
CHECK
CLEAN
CLEAN
Fuel Filter
Idle Speed
CHECK
CHECK-ADJUST
Valve Clearance CHECK-ADJUST
Fuel lines CHECK
Table 7. Engine Maintenance Schedule
Before
First
Month or
10 hrs
Every 3
Months or
25 hrs
Every 6
Months or
50 hrs
X
X
X
X
X (1)
X
X
Every
Year or
100 hrs
X
X
X
X (2)
Every 2 years (replace if necessary) (2)
Every 2
Years or
200 hrs
X
X (2)
1. Service more frequently when used in
DUSTY
areas.
2. These items should be serviced by your service dealer, unless you have the proper tools and are mechanically proficient. Refer to the HONDA shop Manual for service procedures.
3. For commercial use, log hours of operation to determine proper maintenance intervals.
NOTICE
Refer to manufacturer engine manual for specific servicing instructions.
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 21
DAILY
1. Thoroughly remove dirt and oil from the engine and control area. Clean or replace the air cleaner elements as necessary. Check and retighten all fasteners as necessary. Check the spring box and bellows for oil leaks. Repair or replace as needed.
WEEKLY
1. Remove the fuel filter cap and clean the inside of the fuel tank.
2. Remove or clean the filter at the bottom of the tank.
3. Remove and clean the spark plug (See Figure
20), then adjust the spark gap to 0.028~0.031 inch
(0.6~0.7 mm). This unit has electronic ignition, which requires no adjustments.
MAINTENANCE (ENGINE)
DANGER
DO NOT
use gasoline as a cleaning solvent, because that would create a risk of fire or explosion.
ENGINE AIR CLEANER
1. Remove the air cleaner cover and foam filter element
2. Tap the paper filter element (See Figure 22)
several times on a hard surface to remove dirt, or blow compressed air [not exceeding 30 psi (207 kPa,
2.1 kgf/cm
2
)] through the filter element from the air cleaner case side.
NEVER
brush off dirt. Brushing will force dirt into the fibers. Replace the paper filter element if it is excessively dirty.
3. Clean foam element in warm, soapy water or non-flammable solvent. Rinse and dry thoroughly. Dip the element in clean engine oil and completely squeeze out the excess oil from the element before installing.
GAP
:
0.028 – 0.031 in.
(0.7 – 0.8 mm)
Figure 20. Spark Plug Gap
ENGINE OIL
1. Drain the engine oil when the oil is
warm
as shown
2. Remove the oil drain bolt and sealing washer and allow the oil to drain into a suitable container.
3. Replace engine oil with recommended type oil as listed in Table 5. Engine oil capacity is 1.16 quarts (1.1 liters).
DO NOT
over fill.
4. Install drain bolt with sealing washer and tighten securely.
OIL FILLER
DIPSTICK
WING NUT
AIR CLEANER
COVER
FOAM FILTER
ELEMENT
GASKET
BLOW COMPRESSED
AIR FROM THE
INSIDE OUT
PAPER FILTER
ELEMENT
Figure 22. Engine Air Cleaner
DRAIN
BOLT
SEALING
WASHER
Figure 21. Engine Oil (Draining)
PAGE 22 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
SPARK ARRESTER CLEANING
Clean the spark arrester every 6 months or 100 hours.
1. Remove the 4 mm screw (3) from the exhaust deflector,
then remove the deflector. See Figure 23.
2. Remove the 5 mm screw (4) from the muffler protector, then remove the muffler protector.
3. Remove the 4 mm screw from the spark arrester, then remove the spark arrester
4 MM
SCREW
PROTECTOR
4 MM
SCREW
5 MM
SCREW
MAINTENANCE (ENGINE)
4. Carefully remove carbon deposits from the spark
arrester screen (Figure 24) with a wire brush.
WIRE BRUSH
SPARK ARRESTER
SCREEN
Figure 24. Cleaning The Spark Arrester
5. If the spark arrester is damaged and has breaks or holes, replace with a new one.
6. Reinstall the spark arrester and muffler protector in reverse order of disassembly.
MUFFLER
5 MM
SCREW
SPARK
ARRESTER
Figure 23. Spark Arrester Removal
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 23
PUMP STORAGE
For storage of the pump for over 30 days, the following is required:
Drain the fuel tank completely.
Run the engine until the fuel is completely consumed.
Completely drain used oil from the engine crankcase and fill with fresh clean oil, then follow the procedures described in the engine manual for engine storage.
Remove the drain plug from the pump and drain out any water from left in the housing.
Remove the pump cover and clean inside of pump housing. Coat inside of pump housing with a light film of oil to reduce corrosion. A spray can of oil works well for this application.
Cover suction and discharge ports with duct tape to prevent any foreign matter from falling into pump.
Cover pump and engine with plastic covering or equivalent and store in a clean, dry place.
To protect the water cooled-seals, place one-half pint of lubricating oil (new or used) through the discharge opening on the pump and crank the engine several times.
This will prevent excessive corrosion and also keep the mechanical seal lubricated.
STORAGE
PAGE 24 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 25
NOTES
TROUBLESHOOTING (ENGINE)
Symptom
Difficult to start
Table 8. Engine Troubleshooting
Possible Problem Solution
Fuel is available but spark plug will not ignite. (Power available at high tension cable).
Fuel is available but spark plug will not ignite. (Power tension cable).
NOT
available at high
Fuel is available and spark plug ignites
(compression
normal
).
Fuel is available and spark plug ignites
(compression
low
).
Ignition plug being bridge?
Carbon deposit at ignition?
Check ignition system.
Clean or replace ignition.
Short circuit due to defective insulators? Replace insulators.
Improper spark gap?
Set spark plug gap to the correct gap.
Short circuit at stop switch?
Ignition coil defective?
Replace ignition coil.
Muffler clogged with carbon deposits?
Clean or replace muffler.
Mixed fuel quality is inadequate?
Check stop switch circuit.
Replace stop switch if defective.
Fuel in use inadequate (water, dust)?
Air Cleaner clogged?
Check fuel to oil mixture.
Flush fuel system and replace with fresh fuel.
Clean or replace air cleaner.
Defective cylinder head gasket?
Cylinder worn?
Spark plug loose?
Tighten cylinder head bolts or replace head gasket.
Replace cylinder.
Tighten spark plug.
Operation not satisfactory
Not enough power available
(compression normal, no miss-firing).
Not enough power available
(compression normal, miss-firing).
Engine overheats.
Air cleaner clogged?
Air in fuel line?
Fuel level in carburetor float chamber improper?
Carbon deposits in cylinder?
Clean or replace air cleaner.
Bleed (remove air) from fuel line.
Adjust carburetor float.
Ignition coil defective?
Ignition plug often shorts?
Fuel in use inadequate (water, dust)?
Clean or replace cylinder.
Flush fuel system and replace with fresh fuel.
Replace ignition wires, clean ignition.
Flush fuel system and replace with fresh fuel.
Excessive carbon deposition in combustion chamber?
Clean or replace crankcase.
Exhaust or muffler clogged with carbon.
Clean or replace muffler.
Spark plug heat value incorrect?
Replace spark plug with correct type spark plug.
PAGE 26 — QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20)
TROUBLESHOOTING (ENGINE/PUMP)
Symptom
Operation not satisfactory
Table 8. Engine Troubleshooting
Possible Problem Solution
Rotational speed fluctuates.
Recoil starter not working properly.
Governor adjustment improper?
Governor spring defective?
Fuel flow erratic?
Air taken in through suction line?
Dust in rotating part?
Spring failure?
Adjust governor to correct lever.
Clean or replace ignition.
Check fuel line.
Check suction line.
Clean recoil starter assembly.
Replace spiral spring.
Symptom
Pump does not take on water.
Pump takes in water, little or no discharge.
Suction hose leaks at inlet.
Discharge does not stay on coupling.
Impeller does not turn: pump is hard to start.
Table 9. Pump Troubleshooting
Possible Problem Solution
Not enough priming water in the housing?
Add water.
Engine speed too low?
Increase throttle.
Strainer plugged?
Clean strainer.
Suction hose damaged?
Air leak at suction port?
Replace or repair hose, and clamps.
Check that fittings are tight and properly sealed.
Pump is located too high above water line? Move pump closer to water.
Debris collecting in pump housing?
Clean pump housing.
Too much distance between impeller and volute.
Water leaking out weep hole between pump and engine?
Engine speed too low?
Adjust clearance by adding shims or replace impeller. Min. .006" - Max. .020".
Check condition of mechanical seal and gaskets, between pump end and engine housing.
Increase throttle speed.
Suction strainer partially plugged?
Impeller/Volute worn?
Fittings/clamps are not sealed properly?
Hose diameter is too large?
Pressure too high?
Hose kinked or end blocked?
Impeller jammed or blocked?
Impeller and volute binding?
Defective engine?
Clean strainer.
Adjust clearance by adding shims or replace impeller/volute.
Tighten, replace or add clamp. (Keep extra seals on pump).
Use smaller diameter hose or replace hose.
Check pressure, add additional clamp.
Check hose.
Open pump cover and clean dirt and debris from inside housing.
Adjust clearance by removing shim from behind impeller.
See Engine Owner's Manual.
QP3THX TRASH PUMP • OPERATION MANUAL — REV. #2 (06/03/20) — PAGE 27
OPERATION MANUAL
UNITED STATES
Multiquip Inc.
(310) 537- 3700
6141 Katella Avenue Suite 200
Cypress, CA 90630
E-MAIL: [email protected]
WEBSITE: www.multiquip.com
HERE’S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING
CANADA
Multiquip
(450) 625-2244
4110 Industriel Boul.
Laval, Quebec, Canada H7L 6V3
E-MAIL : [email protected]
UNITED KINGDOM
Multiquip (UK) Limited Head Offi ce
0161 339 2223
Unit 2, Northpoint Industrial Estate,
Globe Lane,
Dukinfi eld, Cheshire SK16 4UJ
E-MAIL : [email protected]
© COPYRIGHT 2020, MULTIQUIP INC.
Multiquip Inc , the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the property of their respective owners and used with permission.
This manual MUST accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.
The information and specifi cations included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifi cations, design or the information published in this publication at any time without notice and without incurring any obligations.
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