Delta M70A-262 Operation And Installation Manual page 59

Maintenance
Surge protection devices (SPD) are designed to protect sensitive circuit
elements of the inverter from damage caused by lightning and other electrical
transients/surges, as such they are sacrificial components and periodically,
may need replacement.
The SPDs are located in the inverter.
If a warning message "AC Surge" or "DC Surge" appears on APP and DSS,
follow the procedure below to replace the SPD.
• Determine which SPD unit is damaged. See Figure 5-4.
AC SPD/DC SPD: Show on the corner of the LED panel.
LED Indicator
(RED FLASH)
LED Indicator LED Indicator
(GRN ON) (GRN ON)
Figure 5-4: Display Indicating AC and DC SPD failure
59