MAINTENANCE
.081/02-15 3-1
CIRCULAR COLLECTOR, H-DRIVE
SAFETY PRECAUTIONS
The primary hazards associated with maintaining circular collectors are identified below.
POWER SOURCE LOCK-OUT
Failure to lock out all sources of power during maintenance
procedures may result in serious personal injury. Following
are the steps of a typical lock-out procedure that can be used
by maintenance and repair crews:
1. Alert the operator and supervisor.
2. Identify all sources of residual energy.
3. Before starting work, place padlocks on the switch, lever or valve, locking it in the
"off' position, installing tags at such locations to indicate maintenance in progress.
4. Insure that all power sources are off and “bleed off” hydraulic or pneumatic pressure
or “bleed off” any electrical current (capacitance) as required, so machine
components will not accidentally move.
5. Test operator controls.
6. After maintenance is completed, all machine safeguards that were removed should
be replaced, secured and checked to be sure they are functioning properly.
7. Only after ascertaining that the machine is ready to perform safely should padlocks
be removed and the machine cleared for operation.
(From Concepts and Techniques of Machine Safeguarding, 1980; U.S. Dept. of Labor OSHA).
TORQUE OVERLOAD CONTROL BOX
Electrical circuits may be energized in the torque overload control box
even though the main power is off. Always check for live contacts
before making adjustments within the box.
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