BENSHAW RediStart MX2 SEP, Руководство пользователя

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8 - Troubleshooting & Maintenance
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8 -
Troubleshooting & Maintenance
8.1 Safety Precautions
For the safety of maintenance personal, as well as others who might be exposed to electrical hazards
associated with maintenance activities, the safety related work practices of NFPA 70E, Part II, should always
be followed when working on electrical equipment. Maintenance personnel must be trained in the safety
practices, procedures, and requirements that pertain to their respective job assignments.
WARNING : To avoid shock hazard, disconnect main before working on controller, motor, or control
devices such as start/stop pushbuttons. Procedures which require parts of the equipment to be
energized during troubleshooting, testing, etc, must be performed by properly qualified personnel,
using appropriate work practices and precautionary measures as specified in NFPA70, Part II.
CAUTION : Disconnect the controller from the motor before measuring insulation resistance (IR) or the
motor windings. Voltages used for insulation resistance testing can cause failure of SCRs. Do not
make any measurements on the controller with an IR tester (megger).
8.2 Preventive Maintenance
8.2.1 General Information
Preventive maintenance performed on a regular basis will help to ensure that the controller continues to
operate reliably and safely. The frequency of preventive maintenance depends upon the type of maintenance,
and the installation site environment.
NOTE : Preventive maintenance should always be performed by a trained technician.
8.2.2 Preventive Maintenance
During Commissioning:
• Torque all power connections during commissioning, including factory wired equipment.
• Check all of the control wiring in the package for loose connections.
• If fans are installed, ensure proper operation.
After the controller has been put in operation:
• Re-torque all power connections, including factory wired equipment.
• Inspect the cooling fans after two weeks to ensure proper operation.
After the first month of operation:
• Clean any accumulated dust from the controller using a clean source of compressed air or a vacuum cleaner.
• Re-torque all power connections, then repeat annually.
• Inspect the cooling fans every three months to ensure proper operation.
• Clean or replace any air vent filters on the controller every three months.
NOTE : If mechanical vibrations are present at the installation site, inspect the electrical connections more
frequently.