Accumulator The pilot control system is equipped with an accumulator. For a short period of time after engine has been stopped, accumulator will store a pressure charge that allow hydraulic controls to be activated. Activation of any controls will allow selected functions to operate under force of gravity. When performing maintenance on pilot control system, release hydraulic pressure in system as described in “Handling of Accumulator” on page 4-99. FG018458 The accumulator is charged with high-pressure nitrogen gas. If it is improperly handled it can explode causing death or serious injury. Always observe the following precautions:
Figure 47 Do not drill or punch holes in accumulator or expose it to any flames, fire or external heat source. Do not weld on accumulator. When performing disassembly or maintenance of accumulator, or when disposing of accumulator, charged nitrogen gas must be properly released. Contact your DOOSAN distributor for assistance. Wear safety goggles and leather gloves when working on an accumulator. Hydraulic oil under pressure can penetrate skin and result in death or serious injury. If fluid enters skin or eyes, get immediate medical attention from a physician familiar with this injury.
Compressed Air When cleaning filters, radiator or other components with compressed air, there is a hazard of flying particles that can result in serious injury. Always wear safety goggles, dust mask, leather gloves, and other protective devices. Safety 1-59 DX225LC-3