Electric Motors; Maintenance - Repairs; Replacement Parts - S&P TD SILENT Series Instruction Manual

ELECTRIC MOTORS

Electrical connections are made in accordance
with connection diagram in the motor instruc-
tions and/or inside motor terminal box.
In ventilation mode, the motor must be pro-
tected by a thermal magneto protection device.
Many S&P fans are supplied with a cable gland
for typical electrical power cable connection, to
assist installation. However, if Installer uses a
cable requiring a differing cable gland, this is
to be supplied by the Installer, no alternative is
offered by S&P. The Installer is responsible to
ensure that cable, and cable gland, are suitable
and safe for application according to country
regulations.
Ensure system operation is safe in event of
power cut/power outage/disruption to power
supply. If ventilation is stopped due to disrup-
tion to power supply, ensure no risk due to ex-
cessive temperature (electrical heater). Care
may be needed when restarting fan after dis-
ruption to power supply.
Motors are supplied with permanently greased
or sealed for life bearings.
Motors with speed control via Variable Speed
Drive (VSD) Frequency Inverter, should not be
run in excess of nameplate speed. In general
applications, we recommend not to run at less
than 20Hz and never less than 20% of name-
plate speed without reference to manufactur-
er, since this may damage the motor.
If you are using cable longer than 20 meters
between the drive and the motor, add output
sinusoidal fi lter.
If you are using cable longer than 50 meters
between the drive and the motor, add output
EMC fi lter.
MAINTENANCE – REPAIRS
Maintenance/repairs must be carried out by
competent personnel and in accordance with
applicable International, National and Local
regulations. Fan equipment should be electri-
cally isolated and locked out before any work
started.
Fan equipment should be regularly cleaned,
frequency depending upon service load and ap-
plication, but no less than every 6 months. Fan
equipment for dust applications may require
more frequent cleaning to ensure safe opera-
tion. Cleaning should include all areas where
dust can accumulate in the fan equipment.
Special attention should be made to any un-
usual sounds, vibration or temperature. If
any problems are detected the fan equipment
should be stopped immediately and cause in-
spected. The impeller and blades should be
regularly checked for damage that could cause
imbalance in the moving parts.

REPLACEMENT PARTS

Do not start working until all relevant safety
procedures have been read, understood and
actioned correctly.
Ensure that personnel are competent for work
required, spare parts are correct for applica-
tion, tools and materials to be used are availa-
ble and safe for environment.
Identify components, bolts, fi xings to be re-
moved, and identify location to ensure replaced
in same location, this can be done by marking
with number/letter/colour to bolt fi xing and
any associated spacing material to identify lo-
cation. This is especially important for motor
fi xings to supports, and impeller shaft fi xings
to supports, where packing/spacing/shim ma-
terial is used to adjust motor/impeller shaft
center line, and hence fi nal impeller position.
GOOD PRACTICE, GOOD/BAD INSTALLATION
ARRANGEMENT
Fans are designed and performance tested
in accordance with standard duct arrange-
ments. Thus they should be installed cor-
rectly without any adverse installation effect.
Typically fans should be installed so that air
entry is clear, unobstructed, non-turbulent
and discharge does not hinder airfl ow, since
air turbulence adversely affects impeller per-
formance.
END OF LIFE DISPOSAL
Disposal must be carried out by competent
personnel and in accordance with applicable
International, National and Local regulations.
EN
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