KD1800/KD6 — MAINTENANCE (GENERATOR)

Generator

Capacitor Regulation

A single capacitor is used to regulate the voltage to within 5% of the rated load.

zALWAYS USE EXTREME CAUTION when handling capacitors.The capacitor will still contain a high voltage even after the engine has been shut-down.

zALWAYS discharge the capacitor before handling. Use a conductor or a screwdriver (Figure 15) with an insulated handle. Place screwdriver across both capacitor terminals while holding onto the handle. This will short out the voltage and discharge the capacitor.

Figure 15. Discharging Capacitor

Checking the Charge of the Capacitor

1.Use an "OHMMETER" to check the charge and discharge of the capacitor. Set the ohmmeter to the RX-1000 scale.

2.Place the ohmmeter leads on the capacitor terminals one at a time. A meter deflection should be seen (charging), followed by a slow return to infinity (discharging).

3.Reverse the ohmmeter leads and repeat the procedure. The results should be the same. Replace the capacitor if no meter deflection or continuity has been indicated by the ohmmeter.

Flashing Rotor Procedure

NOTE

DO NOT run the generator during this procedure.

1.Disconnect all incoming power leads to the generator.

2.Connect the (+) lead of a 12 volt battery to the "R" connection (Figure 16).

Figure 16. Flashing The Rotor Configuration

3.Connect the (-) lead of the battery to the rotor shaft.

4.Re-connect all incoming power leads to the generator

5.Start the generator as outlined in the "Operating Section" of this manual.

6.With a voltmeter check the no load voltage at the 120/ 240 output connector located on the control box.

7.The no load should be within 10% of the rated load.

8.If residual voltage is normal, the capacitor is defective and should be replaced.

Diode Check

1.Check the diode individually by removing the (+) rotor lead stud connection (Figure 16). The diode is good if the resistance reading is approximately mid -scale on the lowest ohm scale.

2.Check for leakage in the diode by reversing the polarity. The diode is good if the resistance reading is infinite.

3.A faulty diode will give a resistance value of zero.

PAGE 30 —KD1800/KD6 A.C. GENERATOR— PARTS & OPERATION MANUAL — REV. #1 (06/16/05)

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Multiquip KD1800/KD6 Maintenance Generator, Generator Capacitor Regulation, Checking the Charge of the Capacitor
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KD6, KD1800 specifications

The Multiquip KD1800 and KD6 are robust, high-performance asphalt and concrete power trowels designed for professionals in the construction and masonry industries. These machines are engineered to deliver outstanding results while maintaining ease of use and operator comfort.

The KD1800 model features a powerful 18 horsepower engine, providing ample torque and efficiency for large-scale projects. Its balance of power and weight ensures optimal performance, allowing it to tackle even the most demanding surface finishes with precision. The KD1800 offers a blade diameter of 48 inches, making it ideal for expansive work areas. Its rotational speed is adjustable, enabling operators to customize the finishing process based on the specific requirements of their job.

In contrast, the KD6 is compact yet powerful, equipped with a reliable 6 horsepower engine. Tailored for smaller jobs or areas with limited access, it features a 36-inch blade diameter. The KD6 is designed for agility and maneuverability, making it a perfect choice for residential projects and tight spaces. Despite its size, the KD6 possesses sufficient power to deliver smooth, professional results on concrete surfaces.

Both models feature advanced technologies aimed at improving productivity and ease of operation. The adjustable handle height and tilt angle ensure ergonomic positioning for operators, preventing fatigue during extended use. The direct-drive system minimizes maintenance needs and enhances longevity, making both the KD1800 and KD6 low-maintenance solutions that deliver reliable performance.

Safety is paramount in the design of these trowels. Both models include protective features such as blade guards and anti-vibration systems to maximize operator comfort and safety. Furthermore, the KD1800 and KD6's user-friendly controls facilitate intuitive operation, allowing even less experienced operators to achieve high-quality finishes.

These power trowels are constructed from durable materials to withstand the rigors of daily use in the field. Their robust build quality means they can endure the harsh environments of construction sites while still delivering consistent performance.

In summary, whether you choose the Multiquip KD1800 for large-scale projects or the KD6 for smaller, more confined jobs, both power trowels promise exceptional performance, advanced features, and operator-friendly designs that make them invaluable tools for any professional contractor involved in concrete and asphalt finishing.
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