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PREVENTIVE MAINTENANCE - Inspection and Cleaning
Inspection of the SPD should be performed periodically to maintain reliable system performance and continued
transient voltage surge protection. While it is difficult to establish a preventive maintenance schedule because
conditions vary from location to location, inspections for failed LEDs and other signs of trouble utilizing the built-in
diagnostics should be performed on a routine basis (weekly or monthly).
REPLACEMENT PARTS
The only replaceable item in the SPD is the Display Board Assembly (see Figure 5), and must be replaced by a
qualified electrician.
Page 9
Display Board
Chassis Cover
(Chassis not shown)
Figure 5. Display Board Locator Diagram
Not to exact scale.
Ground Wire
(to Chassis)
Display Board
Retaining Hardware
(4 places)
Ribbon Cables
(to Chassis)
Ribbon Cable
Connectors