Harrington Hoists and Cranes SH Hoist - Manual (Page 7)

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9. EXERCISE CAUTION WHEN WELDING
To avoid electrical shock, keep the load chain and the hook away from the grounding wire of
the electrical welder.
10. DO NOT ALLOW LOAD TO HIT LOAD CHAIN CONTAINER
Do not hang load directly by the bottom hook without the use of a sling or other device when
lifting to full height as the load could hit and push up the load chain container.
11. TEST LIMIT SWITCH PERIODICALLY
The SH005-S through SH020-L hoists are supplied with an upper limit switch. Periodically
(2-3 months) test the limit switch by hand to assure that it is functioning properly.
CARE AND MAINTENANCE
1. GEAR BOX OIL
The oil in the gear box need not be replaced under normal use.* If the hoist is used more
frequently than normal, the oil should be replaced every two years.
Recommended Gear Oil:
Meropa Lubricant No. 320 - Texaco Oil Co., or Caltex Oil Co.
2. CLEANING AND COATING OF LOAD CHAIN WITH OIL
Clean the load chain occasionally and apply a light coat of machine or gear oil to assure long
service life and safe operation.
3. STORAGE
a) When the hoist is installed outdoors, do not expose to rain or dew.
b) Hang the hook suspension type from a ceiling or on a wall.
c) Do not store the hoist in a humid place.
* NORMAL SERVICE---operation with random loading at or below rated capacity or uniform
loading not exceeding 65% of rated capacity for not more than 25%
of the time.
HEAVY SERVICE -----operation with loads less than or equal to rated capacity which
exceed normal service limits.
SEVERE SERVICE---operation with loads less than or equal to rated capacity involving
normal or heavy service with abnormal conditions.
(service classes from ASME B30.16-1987)