Manitowoc National Crane NBT40 Series User Manual

National Crane Published 4-23-2018 Control # 239-11 4-1
4
NBT40 SERIES OPERATOR MANUAL SET-UP
SECTION 4
SET-UP
SECTION CONTENTS
Jib Safety Information . . . . . . . . . . . . . . . . . . . . . . 4-1
Jib Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Deployment Procedure . . . . . . . . . . . . . . . . . . . . . 4-2
Stowing Procedure . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Jib Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Jib Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Anti-two block Weight Installation . . . . . . . . . . . . 4-5
Multi-part Line Reeving . . . . . . . . . . . . . . . . . . . . . 4-5
Using Multiple Part Lines . . . . . . . . . . . . . . . . . . . 4-5
Stow Pegs for hoist cable. . . . . . . . . . . . . . . . . . . . 4-5
Multi-part Line Reeving. . . . . . . . . . . . . . . . . . . . . . 4-6
Using Multiple Part Lines . . . . . . . . . . . . . . . . . . . . 4-6
Installing Cable On The Hoist. . . . . . . . . . . . . . . . . 4-7
Wedge Sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Terminator Wedge Installation. . . . . . . . . . . . . . . . 4-7
Wedge Socket Installation . . . . . . . . . . . . . . . . . . . 4-8
Dead-end Rigging . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
This section contains information on how to perform the
following tasks:
• Erect the jib
• Stow the jib
• Remove the jib
• Use multipart reeving
• Install the hoist cable
• Install the anti-two-block weight
• Install a wedge socket
• Counterweight
JIB SAFETY INFORMATION
1. The anti-two-block switch weight and cord must be
attached to the jib when deployed.
2. Operate with jib by radius when main boom is fully
extended. If necessary, increase boom angle to maintain
loaded radius.
When radius is between points listed on capacity chart,
the load shown at the next longer radius shall be used.
3. Operate with jib by boom angle when main boom is not
fully extended. Do not exceed rated jib capacities at any
reduced boom lengths.
When angle is between points listed on capacity chart,
the load shown at next lower boom angle shall be used.
4. Ensure jib is stowed correctly (Figure 4-1):
a. Removal of swing around pins (C1, Figure 4-1),
without proper installation of stow pin A and jib
swing pin B, may allow jib to fall off.
b. Extending boom with jib stowed and failure to
remove swing pins (C1, Figure 4-1), will damage
unit upon extension.
5. Only swing jib into working or stowed position when
boom is horizontal, stow pin (A, Figure 4-1) and jib swing
pin B, are removed and swing pins (C1) are in place. Jib
could swing uncontrollably if boom is not horizontal.
6. Crane shall be fully set up according to proper set-up
procedures outlined previously when stowing or
unstowing jib.
7. Operate boom and turn functions very slowly and
carefully when using jib since jibs can increase boom
length by 50%.
8. Area where jib swings around must be clear of
obstructions and power lines when stowing and
unstowing jib.
9. Use safety glasses when pounding pins with hammer.
10. Do not extend/retract boom unless boom is horizontal
when stow pin (A, Figure 4-1) and jib swing pin (B) are
removed during stowing or unstowing procedures.
DANGER
Do not operate outriggers unless they are visible to either
the operator or a designated signal person to avoid
crushing injury.
!

Manitowoc National Crane NBT40 Series Specifications

General

Brand	Manitowoc
Model	National Crane NBT40 Series
Category	Construction Equipment
Language	English