380 • Chapter 10 Preventive Maintenance ARTDrive V2 series - Instruction Manual
This can cause intermittent problems that are hard to find. Check for and remove
accumulated dust as follows:
1. Clean bus bars and standoff insulators with a clean dry cloth - do not use
any solvents.
NOTE! Make sure that the air source is directed so that dust and foreign matter is
removed rather than relocated.
2. Using a fine-filtered vacuum cleaner with a non-metallic nozzle, remove
dust and dirt from wiring and electrical components.
3. Inspect cabinet air filters, if equipped. Shake or vacuum filters clean, or
replace, as required.
Do not use high-pressure compressed air, which may damage components.
10.9.2 Loose Connections
Vibration during equipment operation can loosen mechanical and electrical
connections and cause intermittent equipment failure. Additionally, dust and
moisture in loose connections can cause loss of low-level signals at terminal
boards and also thermal runaway at bus connections.
1. Check all hardware and electrical connections, and tighten if needed.
2. Tighten or replace any loosened crimp-style lugs.
3. Tighten or replace all loose or missing hardware.
4. Inspect printed wiring boards for correct seating, and check that any plugs,
wiring, and bus connectors are tight.
To prevent component damage caused by static electricity, treat all
boards and devices with static-sensitive handling techniques. Wear a
wrist grounding strap when handling boards or components, but only
after boards or components have been removed from potentially
energized equipment and are at a normally grounded workstation.
To prevent equipment damage, do not remove, insert, or adjust board
connections while power is applied to the equipment.
10.9.3 Damaged Insulation
Wires and cables with damaged insulation are dangerous when carrying
electricity. They can also intermittently short, causing equipment and functional
failure.
1. Check all wires and cables for fraying, chipping, nicks, wear, or rodent
damage.
2. Check all wires and cables for signs of overheating or carbonization.
3. Repair minor damage to low voltage insulation with a good grade of electrical
tape. If a damaged cable carries high voltages, replace the cable.
4. Replace any cables or wires that have more than mild damage.
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