Teral ALF-UII, Инструкция по эксплуатации

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6. Maintenance and inspection
6.1 Daily inspection
(1) Check the vibration, noise, current value, etc. of the fan.
If there is any unusual condition, it may be a sign of failure; therefore, take the appropriate
measures as soon as possible.
For this purpose, it is recommended to keep an operation log.
(2) If strong vibrations occur, stop the operation and check for the improper piping/duct
connections, loose hang bolts, damage to the bearings, or other causes.
(3) In addition to vibrations, noise is an important factor in judging the operating condition.
If you hear a metallic sound possibly made by contact with the rotor, stop the operation
immediately.
6.2 Periodic inspection
Warning
Before carrying out the inspection of the fan, be sure to turn off the
main power. Otherwise the fan may suddenly start up during
automatic operation etc., exposing personnel to great danger.
Carry out the periodic inspection at least once a year.
The periodic inspection items include the following points, in addition to the daily inspection
items.
(1) Check for loose bolts or nuts at each section.
(2) Check the play between parts.
(3) Inspect the impeller, motor, and other parts for corrosion.
(4) Clean the inside of the fan, and apply anti-corrosive agent or otherwise make repairs.
(5) Check that the insulation resistance of the motor has not decreased. At least 1M
ȍ
is
required.
6-1