Manitowoc CD25, Руководство оператора, Страница: 80 / 160

OPERATING CONTROLS AND PROCEDURES CD25
3-14 Published 1-06-2017 Control # 579-01
Swing Drive and Turntable Bearing
Warm-up Procedures for Temperatures Above -7°C
(20°F):
1. Setup the crane on fully extended outriggers, with the
boom fully retracted and near maximum lift angle with no
load applied.
2. Rotate the superstructure at a speed of less than one
RPM for at least one complete revolution in one
direction, then rotate the superstructure at a speed of
less than one RPM for at least one complete revolution
in the opposite direction.
Warm-up Procedures for Temperatures Below -7°C
(20°F):
1. Ensure the boom is fully retracted and near maximum lift
angle with no load applied.
2. Rotate the superstructure at a speed of less than one-
half RPM for at least two complete revolutions in one
direction, then rotate the superstructure at a speed of
less than one-half RPM for at least two complete
revolutions in the opposite direction.
Axles
Warm-up Procedures for Temperatures Below -35°C
(-30°F):
1. Setup the crane on outriggers.
2. Engage the transmission and allow crane to run at idle
until the temperature of the transmission sump reaches
normal operating temperature.
Hydraulic Oil System
Operating Limits and Warm-up Procedures:
• From 4°C to -10°C (40°F to 15°F): Crane operation
without a load is allowed with medium engine RPM and
medium function speed (joystick position) until the fluid
reaches at least 10°C (50°F). It is then recommended
that all crane functions be cycled to remove cold fluid
from all components and cylinders of the hydraulic
system. If there is any unusual sound coming from the
crane’s hydraulic pumps or motors, stop the operation
and engine immediately and contact a Manitowoc
distributor.
• From 10°C to 4°C (50°F to 40°F): Crane operation with
a load is allowed with medium engine RPM and medium
function speed (joystick position) until the fluid reaches
at least 10°C (50°F).
• From 95°C to 10°C (200°F to 50°F): Crane operation
with a load is allowed with no restrictions.
• Above 95°C (200°F): No crane operation is allowed. Let
the crane’s hydraulic oil cool by running the engine at
idle with no functions actuated.
Cab Heater Warm-up
An Intermediate Speed Control (ISC) function of the Engine
Control Unit (ECU) is programmed to raise the idle speed to
1200 RPM when it gets a signal from the machine electrical
system. This may occur when the crane sets at idle without
operating the crane functions for extended periods of time.
Three conditions are required in order to provide this signal:
• The engine coolant temperature is less than 71° C
(160° F).
• The transmission is in neutral.
• The Crane Function Switch is in the off position.
If any of these conditions change, the signal is lost, the ISC
function is turned off, and the idle returns to 800 RPM.
NOTE: The brake must be applied in order to engage
transmission.
Starting the Engine
Normal Engine Starting
NOTE: Never leave the engine running while the crane is
unattended. Shut off the engine to prevent
unauthorized persons from operating the controls.
Walk around the crane and warn all personnel who
may be servicing the crane or are in the crane’s
path prior to starting. Do not start until all personnel
are clearly away from the crane.
1. Enter the cab and adjust the operator’s seat for
comfortable operation.
2. Fasten the seat belt.
3. Check that the parking brake (Figure 3-21) is engaged,
press the top of the switch.
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The operator’s seat is equipped with a seat belt. Use
this belt at all times when operating the crane.
Reference Only