Manitowoc 2250 User Manual

Reference Only
OPERATING CONTROLS AND PROCEDURES 2250 OPERATOR MANUAL
3-90
Published 06-24-16, Control # 241-01
Starting the Auxiliary Power Unit (APU)
See Figure 3-67 for the following procedure.
1. Stop the crane engine and turn the key switch to the
OFF position.
2. Make sure the side access panels on the auxiliary power
unit (APU) (1) are closed and latched. The APU will not
start with the panels open.
3. Turn the APU key or cab key switch (4 or 6) to the RUN
position (7b). This activates the control panel and is
confirmed when the control panel displays all active
systems.
NOTE: The APU can be started using the switch in the
operator cab or on the APU. If the switch in the cab
is used, the crane engine ignition switch must be in
the RUN position.
Glow plug warm-up is controlled by an external
ambient temperature probe. Confirmation of glow
plug engagement is displayed by the glow plug
icon being active. After the glow plug light turns off,
the engine can be started.
4. Turn the key switch to the START position (7c) and
release the key when the engine starts.
5. Make sure the rotating bed interlock switch (11) and
APU interlock switch (3) are in the ON position.
6. Turn on the circuit breakers in the load center.
Stopping the Auxiliary Power Unit (APU)
1. Turn off the circuit breakers in the load center.
2. Stop the auxiliary power unit (APU) engine using the key
switch in the operator cab or on the APU.
NOTE: Turning off the interlock switches is only required
when servicing or removing the APU.
If the APU is to be shut down for an extended
period of time, it is recommended to turn both
ignition keys to the OFF position to avoid draining
the batteries.
Identifying the Connectors
WARNING
Personal Injury Hazard!
Avoid death or serious injury. Accidental starting could
occur. Never deactivate or bypass the safety switches.
The side access panels are equipped with safety
switches.
CAUTION
Starter Motor Damage!
The starter motor could overheat, causing damage.
Do not crank the engine for more than 30 seconds. Allow
the starter motor to cool before cranking the engine again.
CAUTION
Engine Damage!
Use of any starting aids can result in an explosion and
personal injury.
Do not use aerosol starting aids such as ether.
Item Description
1 Electrical Cable (DC, WAD1)
2 Electrical Cable (DC, WAC1)
3 APU Interlock Switch
4 Power Supply Cable (AC, WAA1)
5 Fuel Line (qty 2)
6 A/C Line (qty 2)
FIGURE 3-69

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English