Hitachi 1800 Air Line Accessories, Hydraulic Line Accessories, Fluid 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.

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