Manitowoc MLC165-1 Service Maintenance Manual

Reference Only
Manitowoc Published 05-26-17, Control # 238-02 5-35
MLC165-1 SERVICE/MAINTENANCE MANUAL HOISTS
5
5
SPEED SENSOR—FREE FALL DRUMS
Figure 5-25
The hoist drum assemblies (Drums 1 and 2) equipped with
the free fall option have a sensor that sends a rotational
speed and direction signal to the controller in the universal
node.
Maintenance
Daily, Prior to Free Fall Work
Verify the proper operation of the speed sensor according to
the following procedure.
1. Check that all speed sensor assembly parts, wiring, and
connections are secure and undamaged.
2. Check that the indicator wheel is centered on the drum
flange and firmly in contact. If needed, increase spring
tension.
3. Check that the indicator wheel spins freely.
4. Enable free fall operation according to instructions in the
MLC165-1 Operator Manual.
5. Operate the hoist and verify that there is a reliable speed
readout in the main display. If there is intermittent or no
readout, troubleshoot the speed sensor assembly.
6. At initial installation of the speed sensor, adjust the
eyebolt (6) so the roller (3) is tight against the drum
flange (2).
If any part is damaged or doesn’t work properly, repair as
needed.
Figure 5-25. Speed Sensor Assembly
Item Description
1 Optical Encoder
2 Drum Flange
3 Indicator Wheel and Shaft Assembly
4 Bearings (2)
5Spring
6 Eyebolt
7 Pin and Cotter Pin

Manitowoc MLC165-1 Specifications

General

Brand	Manitowoc
Model	MLC165-1
Category	Construction Equipment
Language	English