Schwing SP 750-18 - Page 100

100
Maintenance
SP 500 / 750-15 / 750-18 / 1000 / 1250 Operation Manual
Checking Main Pressure Cut-O󰀨
With the engine running and E-Stops cleared, increase
the throttle to maximum RPM. Close the quarter turn
and soft switch valve (Figure 8). Put the concrete pump
into forward using the Concrete Pump Forward button.
With the quarter turn valve closed, the concrete pump
will not be able to shift. The reading on the concrete
pressure gauge will show pressure cut-o󰀨 (Figure 10).
If the reading is di󰀨erent from your schematic, refer to
“Setting main relief / Pressure cut o󰀨” on page 113.
Quarter Turn
Shutoff Valve
Soft Switch
Shutoff Valve
Figure 8
Close the Soft switch and quarter turn valve
Checking Soft Switch Pressure
With the engine running and E-Stops cleared, increase
the throttle to maximum RPM. Close the quarter turn
valve (Figure 9). Put the concrete pump into forward us-
ing the Concrete Pump Forward button. With the quar-
ter turn valve closed, the concrete pump will not be able
to shift. The reading on the concrete pressure gauge
will show softswitch pressure (Figure 10). If the reading
is di󰀨erent from your schematic, refer to “Setting the
soft switch relief pressure” on page 114.
Soft Switch
Shutoff Valve
Quarter Turn
Shutoff Valve
Figure 9
Open Soft switch quarter turn valve
Checking Accumulator Pressure
With the engine running and E-Stops cleared, the read-
ing on the accumulator pressure gauge (Figure 10) will
show the accumulator pump pressure cut-o󰀨. If the
reading is di󰀨erent from your schematic, refer to “Set
accumulator pressure cut-o󰀨” on page 115.
ACC2ACC1
ACC3
ACC
98413629-00
Concrete Pump
Pressure Gauge
Local / Remote
Button
Concrete Pump
Forward Button
Accumulator
Pressure Gauge
Figure 10
Concrete pump and accumulator pressure gauges