Bolts, towing hooks and hooks
shall be fastened firmly, free of
crack and movement, complete
and effective.
All fixed parts of controller
bracket are firm and reliable; The
surface of controller and
insulator is clean and free of
dust;
The high and low voltage
connecting wires shall be firm
without looseness, overheating,
discoloration and deformation of
the sheath; the controller control
function is normal, the indicator
function is normal, and the
communication function is
normal;
The hot air fan operates
normally without abnormal
sound, and the dust filter screen
cover of the fan is clean.
All connectors are in good
contact;
The on-off action of the switch is
flexible and free of jamming;
The surface shall be clean and
free of dust, and the wiring nut
shall be fastened; there is no
foreign matter inside the
connector;
Connectors are plugged in place.
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