GE Industrial Solutions AKD-20 Low Voltage Switchgear - Manuel (Page 60)

AKD-20 Low Voltage Switchgear
Chapter 9. Maintaining the Switchgear
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2. Check all bolts that hold cable terminals to the
connection bars for tightness.
3. Check the neutral bus and ground bus connection and
mounting bolts for tightness.
4. Check that all secondary control wiring connections are
tight and that all control cabling is intact.
9-5 Overall Switchgear
Make the following checks on the complete switchgear
equipment.
1. Clean and inspect all painted surfaces and retouch where
necessary.
2. Check to see that all anchor bolts and other structural
bolts are tight.
3. Check that all breaker and instrument compartment door
latches operate properly.
4. If the switchgear is equipped with heaters, check to see
that all heaters are energized and operating.
5. For exterior vent openings in equipment furnished with air
filters, the foam filter elements should be removed and
washed in warm soapy water, rinsed, and reassembled at
least annually. Elements should be inspected before re-
assembly and replaced if any signs of deterioration are
evident.
9-6 Paint Refinishing
Indoor switchgear is finished with ANSI-61 gray acrylic enamel
paint (PPG W42713, GE part number 21525032650). To refinish
damaged areas, remove all loose paint, rust, scale, oil or grease.
Sand any scratches smooth using 220 grit paper or finer.
—Apply a coat of good acrylic enamel primer (Sherman-Williams
E61 A 60,-GE part number 21525025200) with a viscosity of
approximately 24-32 seconds using a #2 Zahn cup. Reduce with
D5B9 Xylol (GE part number 21525038000) if needed. Air dry the
primer for a minimum of 30 minutes, then apply the finish color
coat of acrylic enamel. The top coat should be applied within 24
hours for best adhesion.
—If the area is to be spray-coated, thin the acrylic enamel with
D5B9 Xylol (GE part number 21525038000). This thinning should
only be necessary if the paint was received in a five gallon drum
or more. The recommended viscosity for the W42713 topcoat
should be 24-32 seconds with a #2 Zahn cup. The curing
schedule for PPG W42713 is dust free in 5 minutes, touch in 30
minutes, handle in 60 minutes, full cure in 7 days. Both the
primer (Sherwin-Williams E61 A 60) and paint (PPG W42713)
should be applied only when temperature is above 55 degrees
Fahrenheit.
—Application of special paint will be per the manufacturer’s
Product Data Sheet which includes instructions on thinning and
application.
9-7 Circuit Breaker Lifting
Mechanism
Under normal conditions, no special maintenance procedures or
lubrication is required for this device. If the cable is abraided
under any condition, it should be inspected for broken strands or
other damage and replaced if necessary.