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IMPORTANT INFORMATION
In the event of the resale of any of the goods, in whatever form, Resellers/Buyers will include
the following language in a conspicuous place and in a conspicuous manner in a written
agreement covering such sale:
The manufacturer makes no warranty or representations, expressed or implied,
by operation of law or otherwise, as to the merchantability or fitness for a
particular purpose of the good sold hereunder. Buyer acknowledges that it alone
has determined that the goods purchased hereunder will suitably meet the
requirements of their intended use. In no event will manufacturer be liable for
consequential, incidental or other damages.
Resellers/Buyers agree to also include this entire document including the warnings above in a
conspicuous place and in a conspicuous manner in writing to instruct users on the safe usage of
the product.
This instruction manual should be read together with all other printed information such as
catalogs, supplied by Sterling Electric.
GENERAL OPERATION
1. Run the motor, which drives the unit, and check the direction of unit output rotation. Consult
motor nameplates for instructions to reverse the direction of rotation.
2. Attaching the load: On direct-coupled installations, check shaft and coupling alignment
between unit and loading mechanism. On chain/sprocket and belt/pulley installation, locate
the sprocket or pulley as close to the oil seal as possible to minimize overhung load. Check
to verify that the overhung load does not exceed specifications published in the catalog.
3. High momentum loads: If coasting to a stop is undesirable, a braking mechanism should be
provided to the unit output or the driven mechanism.
CAUTION: The system of connected rotating parts must be free from critical speed,
torsional or other type vibration, no matter how induced. The responsibility
for this system analysis lies with the purchaser of the speed reducer.
INSTALLATION
1. Mount the unit using grade 5 or higher fasteners.
2. For shipment, pipe plugs are installed in the unit and a vent plug is packed separately. After
mounting the unit in position, remove the appropriate pipe plug and install the vent plug in
the location shown in the chart under LUBRICATION. On double reduction units both the
primary and the secondary must be vented. Failure to vent the unit can cause premature
seal wear or loss of seal and oil. These conditions are not covered by warranty. Check for
correct oil level. Contact the factory for level and vent recommendations on non-standard
mounting positions.
CAUTION: Do not operate the unit without making sure it contains the correct
amount of oil. Do not overfill or underfill with oil, or injury to personnel,
reducer or other equipment may result.