Schwing SP 1800-D, Original Operating Instructions

Page: 177 / 390

3.37-1
004.910.01-EN
RELEASE OF BLOCKAGES
OBSERVE
SAFETY MANUAL
DANGER
Danger to life!
If interventions are required in the machine technology to release blockages, which go beyond the
measures described below, these may only be carried out by qualified personnel. The following
must be observed in the process:
- Only work on unpressurised hydraulic systems. Although pressure relief valves help prevent an
overload of the machine, the hydraulic system is under pressure when tripping the pressure relief
valve.
Switch off the drive and secure it against being switched back on. Release the hydraulic system.
This can be done, for example, by opening manual relief valves or also by repeated manual
switching of the appropriate directional valve in both directions.
In contrast to a pressure test, an uncontrolled
blockage of the machine occurring during
operation is a severe fault.
If the energy stored during blockage is
suddenly released, it can cause serious
accidents by independent movements of the
machine or failure of components.
Even the use of inappropriate measures to
release such blockages can suddenly release
the stored energy and cause serious
accidents.
DANGER
Danger from uncontrolled movements!
Proceed as follows during an uncontrolled
blockage:
- In case of danger, immediately actuate an
EMERGENCY-STOP switch!
- Remain calm!
- Try to locate the blockage!