Manitowoc MLC150-1, Руководство по техническому обслуживанию

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HOISTS MLC150-1 SERVICE/MAINTENANCE MANUAL
5-26
Published 03-21-2021, Control # 264-01
DRUM 1 AND 2 MINIMUM BAIL LIMIT
Non-Free Fall Drum
See Figure 5-18 for the following procedures.
The minimum bail limit stops the corresponding Drum 1 or 2
from lowering when there are three to four wraps of wire
rope remaining on the first layer of the drum.
When the limit is reached, the operating limit
fault is activated and the fault icon appears in
the fault bar of the Main Display Working
Screen.
• The drum can be operated in the hoist direction after the
limit is contacted.
• The limit can only be bypassed by disconnecting the
electric cable (5) from the electric cable (6) and
connecting the supplied shorting plug (7) to the electric
cable 6.
Limit Switch Adjustment
1. Pay out the wire rope from the desired Drum 1 or Drum
2 until there are three to four wraps of rope on the first
layer of the drum.
2. Remove the cover (3).
3. Turn either adjusting screw (4) counterclockwise until
you hear the switch “click”.
Repeat this step for the other adjusting screw (4).
4. Operate the drum to make sure it stops with three to
four wraps of wire rope on the first layer of the drum.
5. Readjust the limit switch as needed.
6. Install the cover with a new gasket (if required).
WARNING
Falling Load Hazard!
When lowering a load below the minimum bail limit, do so
slowly with extreme caution. Do not lower the load to the
point where less than three full wraps of wire rope are on
the drum. The wire rope could be pulled out of the drum,
allowing the load to fall.
Right Side of Drum 1
Drum 2 Similar
Left Side of Drum 1
Drum 2 Similar
FIGURE 5-17
Item Description Item Description
1 Drum 1 or 2 5 Electric Cable from Limit Switch
2 Limit Switch 6 Electric Cable from Wire Harness
3 Cover 7 Shorting Plug
4 Adjusting Screw (Qty 2)
REFERENCE
ONLY