Air Line Accessories, Hydraulic Line Accessories

Air Line Accessories

For air-powered pumps, install the following accessories in the order shown in FIG. 1, using adapters as neces- sary.

Accessory Air Control Kits are available for the NXT Air Motor. The kits include a master air valve (E), air regulator (F), and filter (J). Order the kit separately. See manual 311239 for information.

•Bleed-type master air valve (E): required in your system to relieve air trapped between it and the air motor when the valve is closed. Be sure the valve is easily accessible from the pump and located down- stream from the air regulator.

•Pump air regulator (F): to control pump speed and outlet pressure. Locate it close to the pump.

•Air line filter (J): removes harmful dirt and moisture from compressed air supply.

•Second bleed-type air valve (K): isolates air line accessories for servicing. Locate upstream from all other air line accessories.

Hydraulic Line Accessories

For hydraulic-powered pumps, install the following accessories in the order shown in FIG. 2, using adapters as necessary.

•Use a minimum 13 mm (1/2 in.) ID supply line (C), and a minimum 22 mm (7/8 in.) ID return line (D). The motor has a 3/4 npt(f) hydraulic oil supply fitting, and a 1 in. npt(f) hydraulic oil return fitting.

•Supply line shutoff valve (U) isolates the pump for service.

Installation

•Fluid pressure gauge (F) monitors hydraulic oil pressure to the motor to avoid overpressurizing the motor or lower.

•Pressure- and temperature-compensated flow control valve (G) prevents the motor from running too fast and possibly damaging itself.

•Pressure reducing valve (H) with a drain line (E) runs directly to the hydraulic return line (D).

•Accumulator (J) reduces the hammering effect caused by the motor reversing direction.

•Return line shutoff valve (V) isolates the pump for service.

•Be sure your hydraulic power supply is equipped with a suction filter to the hydraulic pump and a sys- tem return line filter (W) of 10 micron size.

•Connect a 6 mm (1/4 in.) ID drain line (K) to the barbed fitting on the drip pan, and place the free end in a container to collect the drainage.

Fluid Line Accessories

Install the following accessories in the order shown in FIG. 1 and FIG. 2, using adapters as necessary.

•Fluid drain valve (M): required in your system, to relieve fluid pressure in the hose and gun.

•Fluid filter (L): with a 60 mesh (250 micron) stain- less steel element to filter particles from the fluid as it leaves the pump.

•Gun or valve (S): to dispense fluid.

•Fluid line swivel (R): for easier gun movement.

•Suction kit (T): enables the pump to draw fluid from a container.

311826B

1800 specifications

The Hitachi 1800 series excavators represent a significant leap in construction and earthmoving technology, designed to enhance productivity while ensuring operator comfort and environmental sustainability. These excavators are emblematic of Hitachi's commitment to advancing machinery engineering, equipped with an array of features and technologies that optimize performance.

One of the standout characteristics of the Hitachi 1800 is its powerful yet fuel-efficient engine. The machine is equipped with a Tier 4 compliant engine, which meets stringent emission regulations while delivering increased power output. This leads to enhanced digging performance and better fuel economy, reducing operational costs for excavating contractors.

The hydraulic system of the Hitachi 1800 is another remarkable feature. It utilizes a closed-center load sensing system that automatically adjusts hydraulic flow based on the load being handled. This technology allows for precise control during operations, whether digging, lifting, or swinging, and improves overall operational efficiency. The responsiveness of the hydraulic system aids in increasing the speed and accuracy of work cycles.

Operator comfort is prioritized in the Hitachi 1800 with its ergonomically designed cab. It offers excellent visibility, reduced noise levels, and adjustable seating, which enhance the operator's experience during prolonged use. Advanced climate control systems ensure that operators remain comfortable in various environmental conditions. The intuitive control layout, combined with a multi-function joystick, allows operators to manage all functions with minimal effort.

Additionally, the Hitachi 1800 incorporates advanced telematics technology, which allows operators and fleet managers to monitor machine performance in real-time. This technology aids in predictive maintenance, helping reduce downtime and extend the life of the excavator.

The excavator’s durability is another core characteristic. It features a robust undercarriage designed to withstand harsh operating environments, and high-strength materials are used across the machine to enhance longevity and reliability.

In summary, the Hitachi 1800 series excavators combine powerful engines, advanced hydraulic systems, and operator-centric designs to provide a robust and efficient solution for construction and earthmoving projects. With their state-of-the-art technology and commitment to sustainability, they represent an excellent investment for professionals looking to enhance productivity and performance on the job site.