Manitowoc CD15

Published 3-30-2018, CTRL 636-05 3-15
CD15 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
3
Hoist
Performing a warm-up procedure is recommended at every
startup and is required at ambient temperatures below 4°C
(40°F).
Warm-up Procedures:
1. Without operating the hoist function, warm the hydraulic
oil (see Hydraulic Oil System on page 3-15).
2. Once the hydraulic system is warm, operate the
unloaded hoist, in both directions, at low speeds several
times to prime all hydraulic lines with warm hydraulic oil
and to circulate gear lubricant through the planetary
gear sets.
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 mast at a speed of less than one RPM for at
least one complete revolution in one direction, then
rotate the mast 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 mast at a speed of less than one-half RPM for
at least two complete revolutions in one direction, then
rotate the mast at a speed of less than one-half RPM for
at least two complete revolutions in the opposite
direction.
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.