Harrington Hoists and Cranes RH Wire Rope Hoist - Manual (Page 39)

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3.7 Pre-operational Checks and Trial Operation
3.7.1 Refer to the hoist’s (and trolley's) Nameplate(s) and record the Product Code(s), and Serial
Number(s) in the space provided on the cover of this manual.
3.7.2 Perform pre-operational checks for the trolley hoist:


Confirm the adequacy of the rated capacity for all slings, chains, wire
ropes and all other lifting attachments before use. Inspect all load suspension members for
damage prior to use and replace or repair all damaged parts.
 Ensure that trolley is properly installed on the beam, and stops for the trolley are correctly
positioned and securely installed on the beam.
 Ensure that all nuts, bolts and split pins (cotter pins) are sufficiently fastened.
 Pull down on the Pendant and ensure that the Cord Strain Relief Cable takes the force, not
the Pendant Cord.


Check supply voltage before everyday use. If the voltage varies more
than 10% of the rated value, electrical devices may not function normally.
3.7.3 Confirm proper operation:
 Before operating read and become familiar with Section 4 - Operation.
 Before operating ensure that the hoist (and trolley) meets the Inspection, Testing and
Maintenance requirements of ANSI/ASME B30.16.
 Before operating ensure that nothing will interfere with the full range of the hoist’s (and
trolley’s) operation.
3.7.4 Proceed with trial operation to confirm proper operation.
 Verify that the controls agree with hoist direction. Make sure that depression of the Up button
lifts the Bottom Block and depression of the Down button lowers the Bottom Block. If the
Bottom Block does not move in the correct direction when the push buttons are pushed, the
power supply is phased incorrectly. In this case, turn off the power source or breaker switch
 Operate the trolley through it's full range of motion. Make sure the trolley runs smoothly and
does not bind. Check the power supply and festoon system for proper operation
then reverse any two of the three wires at the power source. The hook will then move in
accordance with the directions of the push button.
 Perform inspections per Section 5.3, “Frequent Inspections”.