CM-ET Lodestar - Manual (Page 15)

PROTECTOR
The Protector should operate for the normal life of the hoist
without service. The device has been lubricated and calibrated
at the factory for a specific model of hoist and is not adjustable
or interchangeable with other models. For proper overload pro-
tection, be sure before installing a Protector that it is correct for
the unit. The spring washer of the Protector had been color
coded at the factory as follows:
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 below. If desired, these
lubricants may be purchased from CM. Refer to page 29
for information on ordering the lubricants.
• The Protector should operate for the normal life of the
hoist without service. The device has been lubricated and
cali brated at the factory for a specific model of Lodestar
Hoist and is not adjustable or interchangeable with other
models.
CAUTION: The Protector is to be used with “Century
Lubricants HB-11 #3” grease. Do not use any other grease
or the Protector will not operate properly and parts could
be damaged.
The gears and Protector (627-327 and 627-328) are packed at
assembly with grease and should not need to be renewed
unless the gears have been removed from the housing and
degreased.
CAUTION: Never degrease the Protector or attempt to
disassemble this device. Degreasing the Protector may
damage parts and using a device that has been degreased
may cause erratic, inconsistent operation. If the Protector
has been degreased, it must be replaced by a factory
calibrated device.
If the gears are removed from the housing, wipe the excess
grease off the outside surfaces of the Protector with a soft cloth
and degrease the remaining gears and housings. Upon
reassembly, add 7 oz. of the above grease to gears and hous-
ing. Also, coat the spline on the end of the drive shaft (627-311)
with a Molydisulphide lubricant such as “Super Herculon”.
For Models LL, and RR, see page 22 for special gearing align-
ment instructions.
• 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 (627-220, page 28) 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.
ELECTRIC 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.
MAINTENANCE
W WA AR RN NIIN NG G
Used motor oils contain known carcinogenic materials.
T TO O A AV VO OIID D H HE EA AL LT TH H P PR RO OB BL LE EM MS S::
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.
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W WA AR RN NIIN NG G
The lubricants used in and recommended for the Lodestar
Hoist may contain hazardous materials that mandate
specific handling and disposal procedures.
T TO O A AV VO OIID D C CO ON NT TA AC CT T A AN ND D C CO ON NT TA AM MIIN NA AT TIIO ON N::
Handle and dispose of lubricants only as directed in applica-
ble material safety data sheets and in accordance with
applicable local, state and federal regulations.
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Models Protector Color Code No. of Teeth on
Gear
B White 63
C, F Orange 63
J Red 71
L, R Green 92
LL, RR Yellow 92
W WA AR RN NIIN NG G
DO NOT REMOVE PROTECTOR SNAP RING
Removing the snap ring on the Protector assembly will
allow the parts to spring apart. Personal injury may occur.
T TO O A AV VO OIID D IIN NJ JU UR RY Y::
Do not attempt to disassemble the Protector.
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