OPERATING CONTROLS AND PROCEDURES 18000 OPERATOR MANUAL
3-36
Published 12-05-17, Control # 032-23
OPERATION
Engine Startup
Read and understand starting instructions in Engine
Operation and Maintenance Manual provided with crane.
If equipped, the dead-man switch must be held in to increase
engine speed and to operate any crane function (travel,
swing, boom hoist, all load drums).
1. If used, unplug or turn off engine block heater, hydraulic
tank heaters and any other component heater the crane
may have.
NOTE: Manitowoc recommends the use of engine block
heaters and hydraulic tank heaters to aid start-up
when the ambient temperature will be 32°F (0°C)
and below.
2. Open hydraulic tank shut-off valves (Figure 3-16
).
• Current production — to open, pull lock pin out and
rotate handle 90 degrees (handles in line with hose).
Reverse procedure to close handles.
• Past production — to open, unscrew handle and rotate
90 degrees (handles in line with hose) Reverse
procedure to close handles.
3. Turn ignition switch to RUN position.
NOTE: All indicator lights, operating limit buzzer, and
system fault beeper should come on for two to
three seconds when ignition switch is in RUN
position; if not, replace defective parts.
4. If ambient temperature is below 40°F (4°C), disengage
engine clutch, as shown in Figure 3-17
. This step will
disconnect the pumps from the engine and aid in cold
weather startup.
WARNING
Moving Machinery Hazard!
To avoid injuring personnel or damaging crane and
property:
• Do not start engine if warning or out-of-order sign is
present at start controls.
• Check that all controls are off so crane and load do
not move when engine is started.
Check that all personnel are clear of crane before starting
engine. Sound horn to alert personnel.
CAUTION
Pump Damage!
Do not start engine until hydraulic tank shutoff valves are
open; otherwise, pumps could cavitate and be damaged.
CAUTION
Engine Clutch Damage!
Observe the following precautions for engine clutch:
• Decrease engine speed to idle before engaging or
disengaging clutch.
• Do not run engine longer than twenty minutes with
clutch disengaged.
• Disengage and engage clutch several times monthly
with engine running.
FIGURE 3-16
P1925a
Hydraulic Tank Shut-Off Valves
Accessible at Rear of Left Side Enclosure
Current Production
Past Production
P1925b
Valve Handle
Lock
Pin
Valve Handle