Multiquip operation manual QP40TH Maintenance Pump, Pump Vacuum Test

Page 20

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, 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 17 (next page), 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 (Figure 17) 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.

25 in. Hg (inches of mercury)

NOTE 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.

6.To test the flapper valve, shut down 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.

QP40TH — MAINTENANCE (PUMP)

Adjusting Impeller Clearance

1.If it is necessary to replace impeller or volute, be sure clearance between impeller and volute is adjusted correctly.

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. Remove spark plug to make it easier to turn impeller.

It is important not to remove too many shims or the clearance

NOTE 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 1) and drain any water left in the pump.

2.Loosen the two locking hand knobs (turn counter- clockwise) and remove clean-out cover.

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.

PAGE 20 —QP40TH — PARTS & OPERATION MANUAL — REV. #1 (10/01/02)

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Contents GAS Powered Trash Pump Model QP40TH Honda Page Heres HOW to GET Help Table of Contents Parts Ordering Procedures UPS Third Day Service at one-half of actual freight costQP40TH Safety Message Alert Symbols Seriously injured if you do not follow directionsAlways wear approved respiratory protection InstructionsGeneral Safety Rules for Safe OperationRules for Safe Operation Specifications Pump Suction & Discharge SizeSpecifications Engine QP40TH General Information Attempting to remove clean-out cover WaterRe-prime later PortQP40TH Basic Engine Read safety instructions at Beginning of manual Clean the pump, removing dirt Dust, particularly the engineCleaner Enclosed area structure thatQP40TH PRE-SETUP Pump Read safety instructions at the beginning of manualPlace the engine ON/OFF switch in the on position Place the engine fuel valve lever to the on positionQP40TH Initial START-UP Engine Place the fuel shut-off lever in the OFF positionPage QP40TH Maintenance Pump Pump Vacuum TestQP40TH Maintenance Pump QP40TH Maintenance Engine Engine Maintenance ScheduleQP40TH Maintenance Engine QP40TH Preparation for Long -TERM Storage Pump StoragePage QP40TH Troubleshooting Engine QP40TH Troubleshooting ENGINE/PUMP Explanation of Code in Remarks Column QP40TH Suggested Spare Parts To 5 UnitsQP40TH Pump Assy Pump AssyENGINE, Honda GX340K1QA2 CasingCasing Cover Delivery Cover NPT4QP40TH Pump Assy NUT DELIVERY/SUCTION Cover M12 Pump M10Spring Washer M12 Spring Washer M10Honda GX340K1QA2 AIR Cleaner Assy AIR Cleaner AssyELEMENT, AIR Cleaner COVER, AIR CleanerGROMMET, AIR Cleaner COLLAR, AIR CleanerHonda GX340K1QA2 Camshaft Assy Camshaft AssySPRING, Weight Return ROD, PushARM, Valve Rocker LIFTER, ValveHonda GX340K1QA2 Piston Assy Piston AssyBOLT, Connecting ROD Ring SET, PISTON- StandardRing SET, PISTON- OS Ring SET, PpistonHonda GX340K1QA2 Crankcase Cover Assy Crankcase Cover AssyWEIGHT, Governor HOLDER, Governor WeightPIN, Governor Weight GASKET, Case CoverHonda GX340K1QA2 Crankshaft Assy Crankshaft AssyWEIGHT, Balancer Honda GX340K1QA2 Cylinder Barrel Assy Cylinder Barrel AssyIncludes Items W USE from EngineSHAFT, Governor ARM BOLT, Drain PlugHonda GX340K1QA2 Cylinder Head Assy Cylinder Head AssyCLIP, Valve Guide GASKET, Cylinder HeadCOVER, Head TUBE, BreatherHonda GX340K1QA2 FAN Cover Assy FAN Cover AssyCLIP, Wire Harness CLIP, TubeCOVER, FAN *R8* Bright RED ShroudHonda GX340K1QA2 Flywheel Assy Flywheel AssyFAN, Cooling FlywheelHonda GX340K1QA2 Fueltank Assy Fuel Tank AssyRUBBER, Supporter 107MM JOINT, Fuel TankTank Fuel *T34* Simpson Blue GASKET, Fuel Filler CAPHonda GX340K1QA2 Ignition Coil Assy Ignition Coil AssyWIRE, Stop Switch 430MM Coil ASSEMBLY, IgnitionGROMMET, Wire Honda GX340K1QA2 Carburetor Assy Carburetor AssyGasket SET Valve SET, FloatFloat SET Includes Items W/%Honda GX340K1QA2 Carburetor Assy 25 + 9430520122 Honda GX340K1QA2 Muffler Assy Muffler AssyMuffler PROTECTOR, MufflerPROTECTOR, EX. Pipe PIPE, EXHonda GX340K1QA2 Recoil Starter Assy Recoil Starter AssyPULLEY, Recoil Starter RATCHET, StarterSPRING, Friction SPRING, Starter ReturnHonda GX340K1QA2 Control Assy Honda GX340K1QA2 Control Assy Honda GX340K1QA2 Labels Assy Labels AssyEmblem LABEL, CautionMARK, Choke External MARK, OIL Alert ETerms and Conditions of Sale Parts Page Multiquip INC

QP40TH specifications

The Multiquip QP40TH is a robust and reliable portable generator that stands out in the industry for its powerful performance and innovative features. Designed to cater to various applications, including construction sites, outdoor events, and emergency backup power, this generator delivers an impressive balance of power and portability.

One of the key features of the QP40TH is its 40 kW output capacity, which makes it suitable for a range of applications where high power is necessary. This generator is equipped with a three-phase generator system that ensures efficient energy distribution, enabling multiple tools and equipment to run simultaneously. With a fuel-efficient operation, the QP40TH keeps operational costs down while providing consistent power delivery.

The QP40TH utilizes a high-performance diesel engine that boasts reliability and durability, making it ideal for heavy-duty use. Its industrial-grade engine is designed to withstand the rigors of job sites, ensuring long-lasting performance under challenging conditions. Additionally, the generator features a robust frame and protective enclosure, allowing it to endure harsh environments while keeping internal components secure.

In terms of technology, the Multiquip QP40TH is equipped with advanced digital control systems that enhance user experience. The intuitive control panel provides easy access to essential information such as voltage output, frequency, and hour meter. This ease of monitoring ensures that users can manage their power needs effectively without complications.

Furthermore, the generator is designed with improved noise reduction technologies, enabling quieter operation compared to traditional models. This feature is particularly beneficial for events or locations where noise regulations must be adhered to. The QP40TH also includes a fuel tank that ensures extended run times, minimizing downtime for refueling and keeping projects on schedule.

Safety is a priority with the QP40TH, which is equipped with automatic shut-off features that protect the generator from overloads and low oil levels. These safety mechanisms provide peace of mind for users, safeguarding both the generator and connected equipment.

With its combination of power, efficiency, and reliability, the Multiquip QP40TH is a versatile generator that meets the demands of various applications. Its robust features and state-of-the-art technology make it a go-to choice for professionals in construction, events, and emergency services, ensuring that power needs are met with confidence.
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