LOAD-LIMITER
The Load-limiter should operate for the normal life of the
hoist without service. The device has been calibrated at the
factory for a specific model of hoist. For proper overload
protection, be sure before installing a Load-limiter that it is
correct for the unit.
This is mechanical load protection only and contains no
electrical sensing.
HOIST LUBRICATION
GEARS
NOTE:
To assure extra long life and top performance, be
sure to lubricate the various parts of the Lodestar Hoist
using the lubricants specified on page 79. If desired,
these lubricants may be purchased from CM. Refer to
page 79 for information on ordering the lubricants.
The gearbox is packed at assembly with grease and should
not need to be renewed unless the gears have been
removed from the housing and degreased.
If the gears are removed from the housing, wipe the excess
grease off with a soft cloth and degrease the gears and housings.
Upon reassembly, add grease (see page 40) to gears and housing.
Models B, C & F require 8 fl. oz. of grease. Models J, L, LL,
R and RR require 15 fl. oz. of grease.
• The limit switch gears are of molded nylon and require no
lubrication.
• Apply a light film of machine oil to the limit switch shaft
threads at least once a year.
BEARINGS
• All bearings and bushings, except the lower hook thrust
bearing, are pre-lubricated and require no lubrication.
The lower hook thrust bearing should be lubricated at
least once a month.
CHAIN GUIDES, LIFTWHEEL AND LOWER SHEAVE WHEEL
• When the hoist is disassembled for inspection and/or
repair, the chain guides, lower sheave wheel (on double
chain units) and liftwheel must be lubricated with
Lubriplate Bar and Chain Oil 10-R (Fiske Bros. Refining
Co. or equivalent) prior to reassembly. The lubricant must
be applied in sufficient quantity to obtain natural runoff and
full coverage of these parts.
LOAD CHAIN
A small amount of lubricant will greatly increase the life of
load chain.
Do not allow the chain to run dry.
Keep it clean and lubricate at regular intervals with
Lubriplate Bar and Chain Oil 10-4 (Fiske Bros. Refining Co.)
or equal lubricant. Normally, weekly lubrication and cleaning
is satisfactory, but under hot and dirty conditions, it may be
necessary to clean the chain at least once a day and lubri-
cate it several times between cleanings.
When lubricating the chain, apply sufficient lubricant to
obtain natural run-off and full coverage, especially in the
interlink area.
DC BRAKE ASSEMBLY
The correct air gap between field and armature is .008-.018 in
(0.2-0.45 mm) for models A through H and .008-,020 in
(0.2-0.5 mm) for models J through RRT. The DC brake is not
adjustable. As the friction material wears, the brake gap
increases. If the maximum air gap is reached, a new friction
disc/rotor should be installed.
AC BRAKE ASSEMBLY
The correct air gap between armature and field, when
brake is not energized, is 0.025 inch (.635mm) and need
not be adjusted until the gap reaches 0.045 inch
(1.143mm). When checking brake gap, always reset to .025
inch (.635 mm).
To adjust the brake, proceed as follows:
1. Disconnect hoist from power supply.
2. Remove back frame cover, see figure 13
3. Before adjusting the gap: a) back off the stud nuts
and examine friction linings and friction surfaces for
excessive wear (min. thickness .188 inch, 4.78mm),
scoring or scoring or warpage. b) Check shading
coils to be sure they are in place and not broken. A
missing or broken shading coil will cause the brake
to be noisy when hoist is operated. Any of these
symptoms indicate the need for replacement parts.
4. Turn adjusting nuts clockwise gaging the air gap at
both ends.
5. Replace cover, reconnect the power and check
operation.
MAINTENANCE
WA R N I N G
Used motor oils contain known carcinogenic materials.
TO AVOID HEALTH PROBLEMS:
Never use used motor oils as a chain lubricant. Only use Lubriplate
Bar and Chain Oil 10-R as a lubricant for the load chain.
11
WARNING
The lubricants used in and recommended for the Lodestar
Hoist may contain hazardous materials that mandate
specific handling and disposal procedures.
TO AVOID CONTACT AND CONTAMINATION:
Handle and dispose of lubricants only as directed in
applicable material safety data sheets and in accordance
with applicable local, state and federal regulations.
Models
Load-limiter Part Number
Load-limiter ID #
(marked onProtecor)
B
00000240
240
C, F
00000241
241
J, L, R
00000242
242
LL, RR
00000243
243
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Summary of Contents for Entertainment-Lodestar B
Page 49: ...46 NOTES ...
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