IMO VXSM150-1, Инструкция по эксплуатации

Страница: 78 / 114

Maintenance and Inspection 8-1
8
8. Maintenance and
Inspection
Perform daily and periodic inspection to avoid
problems and ensure reliable operation for a
long time. Take care of the following items
during work.
8-1 Daily Inspection
Visually inspect errors in the state of operation
from the outside without removing covers while
the inverter operates or while it is turned on.
1) Check if the expected performance
(satisfying the standard specification) is
obtained.
2) Check if the surrounding environment
satisfies the standard specification.
3) Check that the display of the keypad panel
is free from errors.
4) Check for abnormal noise, excessive
vibration or burning smell.
5) Check for traces of overheat, discoloration
and other defects.
WARNING
• Turn the power off and wait for at
least five minutes before starting
inspection. (Further, check that the charge
lamp is unlit and measure the DC voltage
across the P (+) and N (-) terminals to check
that it is lower than 25V.)
Otherwise electric shock could occur.
• Maintenance and inspection and parts
replacement should be made only by
appointed persons. (Take off watch, rings
and other metallic matter before starting
work.) (Use insulated tools.)
• Never modify product.
Otherwise electric shock or injuries
could occur.
Table 8-2-1 List of periodic inspection
8-2 Periodic Inspection
After stopping the operation, turn the power off
and remove the front cover to perform periodic
inspection.
The smoothing capacitor at the DC section of
the main circuit takes time to be discharged
after the power is turned off. After checking that
the charge lamp (CRG) is unlit, check that the
DC voltage is lower than the safety level (25
VDC) using a multimeter or the like before
starting work.
Check part Check item How to inspect Evaluation criteria
Environment 1) Check the ambient temperature, 1)Check visually or 1) The standard
humidity, vibration and atmosphere measure using specification must be
(dust, gas, oil mist, water drops). apparatus. satisfied.
2) Check if tools or other foreign 2) Visual inspection 2) No foreign or
matter or dangerous objects are left dangerous objects are
around the equipment. left
Voltage Check if the voltages of the main Measure using a The standard
circuit and control circuit are correct. multimeter or the like. specification must
be satisfied.
Keypad 1) Check if the display is clear. 1), 2) Visual inspection 1, 2) The display can
panel 2) Check if there is missing parts be read and there is
in the characters. no fault.
Structure 1) Abnormal noise and excessive 1)Visual or hearing 1),2),3),4),5)
such as vibration inspection No abnormalities
frame 2) Loose bolts (tightened parts) 2) Retighten
and cover 3) Deformation and breakage 3), 4), 5) Visual
4) Discoloration and deformation inspection
caused by overheat
5) Stains and dust