Schwing SP 1800-D, Original Operating Instructions

Page: 190 / 390

3.39-4
005.149.04-EN
3.39.5 Emergency stop valve
The EMERGENCY STOP valve 14 (see
hydraulic switching diagram or Fig. 7) is located
at the front of the hydraulic oil reservoir and can
be reached after removing the plastic cover.
The valve is opened without current and, in
open state, directs the pilot control oil of the
pressure relief valve (PRV) of the concrete
pump to the hydraulic oil box. The PRV opens
and the concrete pump stops.
If the concrete pump stops unexpectedly, it is
possible that the EMERGENCY STOP valve is
open.
Check first if voltage is present at the valve. In
this case, the light-emitting diode lights up in
the plug of the magnet.
If this is not the case, perform troubleshooting
on the electrical system.
If the diode lights up, the EMERGENCY STOP
valve is defective and must be replaced.
In order to react quickly in the event of damage,
we always recommend keeping an emergency
unit ready.
Fig. 7