Manitowoc 999 User Manual

Reference Only
OPERATING CONTROLS AND PROCEDURES 999 LUFFING JIB OPERATOR MANUAL
3-6
Published 05-15-17, Control # 043-09
4 – Limit Bypass Switch
This switch bypasses the limits identified in and .
Insert key. Turn CLOCKWISE to BYPASS reached operating
limits. This position allows the functions to be operated
beyond the limits.
RELEASE to ACTIVATE the limits. This position allows the
limits to stop the functions in the normal manner.
Remove key to prevent unauthorized operation.
NOTE: To bypass the limits listed in for luffing jib setup on
crane S/N 9991326 and newer, proceed as follows:
• Select and confirm luffing jib setup mode.
• Rotate limit bypass switch (4) clockwise and
release. The limits will remain bypassed for 10
seconds.
• Move the desired control handle (luffing hoist,
boom hoist, load drum) — one control handle
at a time — in the required direction. The limits
will remain bypassed for as long as the handle
is moved in either direction.
• The limits will remain bypassed for 10 seconds
after the control handle(s) is returned to off.
5 – Luffing Jib Limit Bypass Switch
If equipped, this switch bypasses the limits identified in .
This switch is provided to allow the jib MAX Up 2 limit to be
bypassed when the boom and luffing jib are lowered to the
ground.
Insert Key. Turn CLOCKWISE to BYPASS (deactivate) the
jib up limit. All other limits will be operational.
Turn key COUNTERCLOCKWISE to ACTIVATE the jib up
limit and allow it to operate in the normal manner.
Remove key to prevent unauthorized operation.
Table 3-2 Bypassable Limit Identification (S/N 9991001 through 9991325)
Limit
Non-European
Limit Bypass Switch (4)
(momentary rocker or key
Switch)
European
Limit Bypass Switch (4)
(momentary key switch)
Luffing Jib Limit Bypass
Switch
1
(5)
(maintained key switch)
Boom Up Limit
Yes or No
2
Yes or No
2
No
Boom Down Limit Yes Yes No
Block-Up Limit (each drum) Yes Yes No
Bail Limits - Max & Min (each drum) Yes Yes No
Rated Capacity Indicator/Limiter Yes Yes No
Luffing Jib Maximum UP 1 Yes No Yes
Luffing Jib Maximum UP 2
Yes
3
No
Yes
3
Luffing Jib Maximum Down 2 Yes No Yes
1
Use only for rigging.
2
The boom up limit cannot be bypassed on current production cranes. To determine if the boom up limit can be bypassed on your
crane, perform the test given on page 3-9 in this section.
3
Only when boom is below 50°.

Manitowoc 999 Specifications

General

Brand	Manitowoc
Model	999
Category	Construction Equipment
Language	English