Hydraulic Safety

WARNING:
Hydraulically driven devices are capable of delivering pinching forces that may cause injury to personnel.

WARNING:
Hydraulic fluid leaking from lines in an unobstructed stream can have sufficient force to penetrate the skin causing severe personal injury.

WARNING:
Hydraulic systems use petroleum-based fluids operating under high pressure. Hydraulic mechanisms are controlled by solenoid-operated valves. DO NOT operate valves during repair.

Work on the hydraulic system is to be carried out only by suitably trained persons; applicable regulations and codes of practice must be adhered to.

The hydraulic system can be locked out using the Main Electrical Disconnect Switch.

If damage such as abrasion or leaks are detected on pressure hoses, pressure lines and connections, immediately shut down the machine, even if the defects are minor. Only put the machine back into operation after the fault has been rectified. Fluids escaping at high pressure can cause injury, explosion or fire.

Releasing pressure

Before disconnecting any line or removing a control or drive unit, the system must be relieved from pressure:

• Lower or support any loads.
• Switch off pump.
• Release pressure from vessel.

Even on machines equipped with an automatic pressure release facility, the pressure gauges should be checked to ensure that there is no residual pressure in the system.

Accumulator (if equipped)

Accumulators are equipped with safety valves. The safety valves are pre-adjusted and sealed. Any adjustment to the safety valves results in danger to life and is prohibited.

Accumulators must be checked and serviced in accordance with statutory regulations.

Accumulators must only be filled with nitrogen.

Observe the nitrogen bottle fill pressure. If the fill pressure is greater than the maximum operating pressure of the accumulator, a tested safety valve must be inserted in the connecting line.

Regular inspection of pressure hoses and fittings

WARNING:
Do not use hands, bare or gloved, to inspect for leaks. Serious injury can occur due to pin-hole leaks under very high pressure.

The integrity of pressure lines and connectors must be checked at regular intervals and replaced even if only slight damage is apparent.

Fluids escaping under high pressure pose a risk of injury, explosion and fire. Any leaks and damages to hoses and pressure lines must therefore be rectified immediately.

Pressure hoses must be replaced regularly according to applicable regulations.

Correct connection

Hydraulic lines must be routed and connected correctly. The correct connectors must be used for connecting lines. All fittings, as well as the length and quality of the hoses must comply with technical requirements.

Correct venting of lines

If, after repairs or moving the machine, any air remaining in the hydraulic system is not purged after re-filling, damage to tubing, hosing and machine components may result.

Escape of oil into the ground must be prevented under all circumstances.