53
IItte
em
m
M
Me
etth
ho
od
d
IIn
ntte
errvva
all
Power circuit
connection
•
Check whether the power cable connections
are loose. Retighten them with the torque
specified in the manual if necessary;
•
Check if the power cables and control cables,
especially the surface in contact with the
metal are damaged;
•
Check if the wrap belt of the connection
terminals is strip-off.
Six
months
after
commissi-
oning for
the first
time and
then once
every six
month to a
year
Terminal and cable
connection
•
Check whether the screws of the control
terminals are loose. Refasten them with
screwdriver if necessary;
•
Check whether the terminals of the main
circuit are in poor contact and whether the
screws are hot;
•
Check if the connection busbar or screws are
discoloring.
•
Visual check the device terminal connection
and cable layout
Once per
year
Fan maintenance
and replacement
•
Check if there is crack in the fan blade;
•
Check if there is abnormal noise during the
running of the fan;
•
Replace the fan if necessary
Once per
year
Switches
maintenance
•
Routine check of the corrosion of the metal
components
•
Annually check the contactors (auxiliary
switches and micro-switches) to ensure the
optimal operation;
•
Check the running parameters (Voltage and
insulation especially)
From
every six
months to
annually
Operation Manual
