70
Operation
SP 500 / 750-15 / 750-18 / 1000 / 1250 Operation Manual
Starting the Machine
• Be sure all safety guards are in place.
• From the Rear Operator Panel, turn ignition switch
to the RUN position. The SCT controller will initial-
ize, the Schwing logo will appear on the screen.
When the system has nished initializing, the En-
gine Status screen will be displayed. When the
glow plug indicator icon disappears, turn and hold
the key switch in (III) START position; when the
engine starts - release. You can’t start the engine
until the SCT controller has initialized.
On SP500/750-15 Tier 3 machines,
if communication is lost between the
IO module and PLC, the engine can
still be started, but is limited to a 10
second window after ignition power is
applied.
• After starting, the engine may be held at low speed
for a duration between 1 to 25 seconds to allow
engine systems to stabilize. The duration will de-
pend on the ambient temperature, time since last
run and other factors.
In ambient temperatures from 32 to
140°F (0 to 60°C), the warm-up time
is approximately 3 minutes. In tem-
peratures below 32°F (0°) additional
warm-up time may be required.
40
80
0
8
16
24
32
120
8060
ok
40
DEF
°C
PSI
LOW FUEL
RPM
+100
Start-Up Screen Engine Status Screen
Figure 11
Start up and Engine Status screen
• With the engine properly warmed-up, press the
Horn button, to clear the E-Stops.
• Use the Throttle Up button (Figure 16) to increase
engine RPM’s. Press and hold this button until the
engine is at maximum RPM.
Checking the machine
• Raise the hopper cover and secure with locking pin.
Crushing hazard. Always secure the
hopper cover with the locking pin.
• Press the agitator enable button. Place the agita-
tor handvalve in either the forward or reverse po-
sition. Carefully lift the hopper grate cover. Ensure
the agitator stops when lifted. If the agitator con-
tinues to move, shut down the machine and check
the hopper grate switch.
Do not operator the machine, if the
hopper grate switch is malfunctioning.
• Check your hydraulic pressures. See “Check hy-
draulic pressures” on page 99.
• Lubricate the outlet wear plate with water or
WD40. Spray inside the outlet pipe and in front
of the Rock Valve. DO NOT put your hand inside
the outlet pipe, spray from the outside only. Never
operate the Rock Valve without rst lubricating the
outlet wear plate. Moving the kidney seal against a
dry plate will cause excessive wear and premature
failure.
• Fill the waterbox if you haven’t done so already.
• With the outlet wear plate lubricated and the wa-
terbox lled, stroke the machine a couple of times
by putting the concrete pump in the forward posi-
tion.
• If the machine is stroking properly, you can either
shutdown the machine or begin pumping the job,
see “Pumping the Job” on page 77 to continue.
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