Inspection item
INSPECTION AND MAINTENANCE 161
6.1.3 Ways to measure voltage, current, power on main circuit
When testing, please first remove the external wiring of the main circuit terminals (R/L1, S/L2, T/L3, U/T1, V/T2,
W/T3), and measure by resistance mode of the meter.
Note: The above figure uses frame B as an example.
6.1.4 Cleaning
Always keep the inverter running in a clean state.
Use a soft brush to remove dust and debris from fan blades, fan covers, and heat sink to keep the inverter in good
heat dissipation.
After immersing a soft cloth in neutral detergent, gently wipe off the dirty part of the case.
Note: 1. Do not use solvents to wipe the case, such as acetone, benzene, toluene and alcohol. They will cause the
surface paint of the inverter to peel off.
2. The display part of the keypad (PU301/DU06/DU08, etc.) is weak against detergent or alcohol. Do not use such
chemicals when wiping.