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 (Figure 2), 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 18 (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 18) 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 reset 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.

QP3TE — 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 2) and drain any water left in the pump.

2.Loosen the two locking hand knobs (turn counterclockwise) 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 — QP3TE TRASH PUMP — OPERATION AND PARTS MANUAL — REV. #4 (11/15/10)

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Multiquip manual QP3TE Maintenance Pump, Pump Vacuum Test
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QP3TE specifications

The Multiquip QP3TE is a robust, portable generator designed to meet the demands of construction sites, outdoor events, and various industrial applications. Renowned for its reliability and performance, the QP3TE is engineered to provide a continuous and efficient power supply.

One of the main features of the QP3TE is its powerful engine. It is equipped with a durable, air-cooled, four-stroke engine that delivers a strong output without compromising fuel efficiency. This makes it not only effective but also economical for extended use. It typically has a fuel tank capacity that allows for many hours of continuous operation, ensuring that your power needs are met without frequent refueling.

The QP3TE stands out for its advanced technologies, including a digital inverter system. This technology ensures clean and stable power, making it suitable for sensitive electronics. Whether you’re using it to power construction tools or delicate devices, the inverter technology minimizes the risk of surges or spikes that could cause damage, rendering the QP3TE a versatile choice for both professional and recreational applications.

In addition to its robust power capabilities, the Multiquip QP3TE is designed with user-friendliness in mind. It features an intuitive control panel that allows for easy operation. Users can easily manage power output, monitor fuel levels, and access start and stop functions without any hassle. Comfort is also a priority; the generator is designed with a compact and lightweight form factor, making it easy to transport and set up in various locations.

Durability is another hallmark of the QP3TE. Constructed with high-quality materials, it’s built to withstand harsh working environments and adverse weather conditions. The generator is also equipped with a protective frame that helps absorb shocks and minimize wear and tear, enhancing its longevity.

Moreover, the QP3TE is engineered to comply with stringent emission standards, ensuring that it operates efficiently while minimizing its environmental footprint. This is an essential consideration for contractors and businesses focused on sustainability.

In summary, the Multiquip QP3TE generator combines powerful, efficient operation with user-friendly features and advanced technologies, making it a top-tier choice for a range of applications. Its enduring build quality, coupled with innovative design, ensures reliability and ease of use for professionals and outdoor enthusiasts alike. Whether for construction, events, or emergency backup, the QP3TE stands as a testament to Multiquip's commitment to quality and performance.
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