ST-1500 SERIES SUB. PUMP — GENERAL INFORMATION

Introduction

The Multiquip Model ST-1500 series submersible pumps are designed to pump water and is used for the draining (de- watering) of swimming pools, well casings construction sites, cofferdams, manholes, transformer vaults and excavations.

A cast iron ductile type impeller is attached to the output shaft of a 0.5 HP (ST-1503A) or 0.3 HP (ST-1503CUL) electric motor which provides adequate power for general purpose pumping. This submersible pump is supplied complete with an electric power cable, and a discharge port which accepts a 2-inch (ST- 1503A) or 1.5-inch (ST-1503CUL) hose.

This pump is ideal for portability because of its light weight and carrying handle. For reliability and long life, a mechanical seal provides shaft sealing, with an oil chamber separating the pump section from the motor.

The pump when in use, should be installed as free standing (upright position) on its strainer base. A discharge hose (not supplied) should be connected to the discharge port. The discharge hose should be adequately supported to avoid stress on the pump.

For maximum water flow, the discharge hose should be kept as short as possible, and with minimum elevation above the pump. Remember as the length and/or height of the discharge hose is increased, the flow of water will be reduced. Also any reduction in the hose size, and any fittings such as valves or outlet nozzles, will restrict the water flow.

To avoid back-siphonage when the pump is switched off, ensure that the end of the discharge hose is installed above the water level at the final discharge point.

When the pump is switched off, the water remaining in the hose will run back through the pump.This can be avoided by placing a non-return valve in the hose nearest the pump.

If the pump was used to pump water containing mud, silt, use clean water to flush out the pump after each use.

DO NOT allow the pump to run dry, as this will damage the pump. During maintenance, dry running is permissible but only for a few seconds.

NEVER lift the pump by its electrical power cord. ALWAYS lift the pump by its carrying handle or attach a rope to the carrying handle.

A pump fully submerged pump in liquid will not freeze, unless the liquid freezes. DO NOT allow a partially submerged pump to freeze.The expansion of water freezing in the volute may crack the pump, causing expensive repairs. If there is any danger of the pump being subjected to freezing temperatures, lift the pump from water and allow it to drain thoroughly.

If the pump jams or the pump rotor locks for any reason, disconnect the pump from the power source immediately. Allowing the pump motor to cycle ON and OFF under an overload condition can burn out the motor.

When replacement of nuts and bolts is required, use only recommended parts as referenced in the parts section of this manual.This pump uses metric threads. DO NOT use English measurement threads.

Control Box Installation Warnings

DANGER

When installing the CB3 control box, the possibility exists of electrical shock, electrocution and possibly death! NEVER have untrained personnel perform the installation.

ALWAYS have qualified service personnel (licensed electrician) perform the installation.

NEVER use this submersible pump to pump flammable liquids or operate in a explosive or flammable environment.

Avoid using this pump in conditions where mud, grit, silt or other debris are present.These conditions could cause blockage and cause excessive pump wear.

DO NOT install the pump directly into an area where there is a heavy buildup of mud, grit, silt or debris. If this condition is present, install the pump on a platform before operating.

This pump must always be positioned on a platform in an upright position. NEVER operate the pump by a suspended rope. To prevent large solids from entering the pump, install a wire mesh screen or similar barrier around the pump.

WARNING

Explosion or Fire Hazard exists if this pump is used with flammable liquids. DO

NOT use this pump with flammable liquids. DO NOT install this pump in

hazardous locations as defined by the National Electrical Code, ANSI/NFPA 70.

Failure to follow the above referenced precautions could result in serious injury or death! Replace pump cord immediately if cord becomes damaged or severed.This pump must be installed in accordance with National Electric Code ANSI/NFPA 70 so as to prevent moisture from entering or accumulating with the boxes, conduit bodies fittings, float housing or cable.

PAGE 10 — ST-1500 SERIES SUBMERSIBLE PUMPS — OPERATION & PARTS MANUAL — REV. #0 (10/04/04)

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Multiquip ST-1500 manual Introduction, Control Box Installation Warnings
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ST-1500 specifications

The Multiquip ST-1500 is a versatile and powerful equipment designed for various applications in construction and landscaping. This machine excels in its category due to its combination of efficiency, durability, and ease of use. Whether you are tackling small landscaping tasks or larger grading projects, the ST-1500 has the features to meet your needs.

One of the standout features of the Multiquip ST-1500 is its robust engine. Equipped with a reliable gasoline-powered engine, it delivers impressive performance while ensuring fuel efficiency. This allows operators to work longer hours without the constant need for refueling, making it ideal for extensive job sites.

The ST-1500 also boasts an advanced hydrostatic transmission system. This technology provides smooth and precise control over speed and direction. Operators can effortlessly maneuver the machine in tight spaces and on uneven terrain. The variable speed control allows for a tailored approach to different tasks, further enhancing productivity.

Safety is paramount in any construction equipment, and the Multiquip ST-1500 addresses this concern with well-thought-out design features. It includes a sturdy roll-over protection structure (ROPS) and operator presence controls to prevent accidental operation. These safety features ensure that users can operate the machine with confidence.

In terms of versatility, the ST-1500 can be outfitted with various attachments, making it suitable for a range of applications. From digging and grading to lifting and transporting materials, this machine can adapt to the specific demands of each job. Additionally, its compact size allows it to navigate through narrow passages and deliver performance in restricted spaces.

The ST-1500 is also designed for low maintenance, which is a significant advantage for contractors and landscapers. Its accessible components make routine checks and maintenance straightforward, minimizing downtime and keeping projects on schedule.

In conclusion, the Multiquip ST-1500 is a well-engineered machine that combines power, safety, and versatility in one compact package. With its innovative technologies and user-friendly design, it stands out as an essential tool for professionals in the construction and landscaping industries, capable of tackling a variety of tasks with ease and efficiency. Whether you are working on grading, landscaping, or material handling, the ST-1500 is engineered to deliver reliable performance that professionals can depend on.
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