Raise Live Mast To Operating Position - Manitowoc 18000 Operator's Manual

18000 OPERATOR MANUAL

Raise Live Mast To Operating Position

See Figure 4-20 for the following procedure.
The following controls are used to raise the mast. See
Operating Controls in Section 3 for identification and
operation of these controls.
• CRANE MODE SELECTOR (in operator's cab) to select
setup mode.
- Live mast controls will not operate until setup mode
is selected and confirmed.
- Live mast operating limits remain off until setup
mode is selected and confirmed.
• MAST HOIST CONTROL (Drum 5 handle in operator's
cab) to raise and lower mast while using mast as a
boom.
• MAST SWITCH on remote control to raise and lower
mast assist arms.
• DIGITAL DISPLAY (in operator's cab) to monitor mast
angles and operating limits. See Digital Display
Readings in Section 3 for identification of mast operating
limits.
WARNING
Falling Mast Hazard!
Prevent mast from falling over backwards or forward:
• Read and thoroughly understand mast raising
instructions.
• Select and confirm SETUP MODE before raising
mast and using it as a boom. Mast operating limits
remain off until this step is performed.
CAUTION
Mast Damage!
Make sure mast angle indicator is properly installed and
calibrated prior to raising gantry and mast.
Mast can be damaged if angle indicator is not properly
installed.
1. Remove locking pins (5) from stored position in mast
straps (4, View B).
2. Select and confirm SETUP MODE.
Manitowoc
3. Scroll to MAST ANGLE on digital display to monitor
mast angles during raising procedure.
4. Increase engine speed to desired RPM.
5. Using mast switch on remote control, raise mast assist
arms until cylinders stall and stop.
Operating limit alert comes on and MAST BELOW 2
DEGREES appears on digital display if you try to raise
mast with mast hoist control before you perform step 5.
6. MAST DOWN with mast hoist control (Drum 5) to begin
raising live mast to operating position.
Mast will rise as mast assist arm cylinders (2, View A)
extend automatically.
NOTE Do not use BOOM HOIST control (Drum 4) to raise
mast. Mast assist cylinders will not extend. Boom
hoist wire rope will pay out.
Unpin mast straps from rotating bed before raising mast
past 11°.
7. STOP raising mast just as mast straps (4) start to go into
tension (mast angle approximately 11°) (View A).
Mast straps will swing to rear when unpinned from rotating
bed. Stand to side when unpinning links.
8. Support straps (4), remove pins (6, View B) to unpin
straps from rotating bed, and lower straps to vertical.
Store pins (6) with collar in strap holes. If a MAX-ER
attachment is used, a load pin with keeper plate (7, View
D) is right side pin.
9. Install locking pins (5, View B) in working position.
10. MAST DOWN to continue raising mast.
Mast assist arms will stop rising automatically when
mast assist cylinders are fully extended (approximately
114°) as shown in View C.
Continued on
Published 12-05-17, Control # 032-23
SET-UP AND INSTALLATION
CAUTION
Mast Damage!
WARNING
Swinging Straps Hazard!
page 4-33.
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