Electric Motors - S&P TGT Manual De Instrucciones

3.4 Check fan equipment name plate data is appropriate to the location electrical supply, especially Voltage, Frequency, Phase, Amps,
speed are correct.
3.5 Check earth connections, electrical terminations and terminal box lid, with any seals, if fitted, are correct.
3.6 In compliance with Machine Directive 89/392/EU, if the fan is accessible to operators and is a health and safety risk, adequate
protection must be fitted, information for safety equipment, including guards, can be found in S&P accessories catalogue.
3.7 For ATEX check impeller clearance with casing or inlet to ensure correct gap "S" is maintained throughout 360° and record
these data on check list. In absence of any specific data this should be a minimum of 1% of the impeller diameter "D" and
never less than 2mm or more than 20mm, in radial or axial directions.
Warning for ATEX: This running clearance "S" between impeller "D" and duct / case or inlet cone is critical for safe fan
operation. See Annex 5: Typical running clearance for axial fans
3.8 Check all rotating parts have free, unobstructed movement.
3.9 Check there are no foreign bodies inside the fan, or that can be drawn into, or fall into fan.
3.10 Check the structure is complete and has no damage.
3.11 Check installation and area is safe and energise fan and start motor. Check that the impeller and airflow direction is correct, check
current (Amps) does not exceed fan equipment nameplate data. Long case fans may have a closed sight port to view impeller
rotation.
3.12 After two hours of operation, check that all fixings are tight and adjust if necessary.

4. Electric motors

4.1 For fans with S&P sourced / sub-supplier motors, the motor O + M Instructions will be included with the fan equipment for extra
assistance to Installer. Refer these for further motor guidance. Electrical connections are made in accordance with connection diagram
in the Motor instructions and / or inside motor terminal box.
4.3 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.
This is especially important for ATEX and Flameproof applications.
4.4 Ensure any fan / motor temperature protection devices are fitted and operating correctly,
products, and all ATEX Ex d motored products speed controlled by VSD Frequency Inverter.
Warning: To prevent ATEX Ex e motored products temperature rise exceeding the maximum limit, protection devices must trip:
A) If maximum temperature achieved.
B) Within specified time (tE) if short circuit or short circuit current to rated current ratio achieved (IA / IN) This data is found on Ex
e motor labels.
Refer: IEC EN 60079 -7, IEC EN 60079 – 14.
Emergency ventilation fan and motors are suitable for S1 duty cycle, and one off emergency smoke operation, where fan is able to run
at stated temperature and time, or to destruction, and thus no motor protection devices must stop this. The fan motor power supply
must be designed to accommodate any motor protection devices, where applicable, for S1 duty cycle and these must be disabled or
by-passed in event of one off emergency smoke operation. Power supply cables to fan motor must be suitable for temperature and
time stated when installed in potential fire area. Refer cables compliant with IEC 60332.
Power supply should be via a protected source to enable fan to run under emergency fire smoke conditions, Direct on line.
Emergency ventilation fans, can be dual purpose, or dedicated Emergency operation. If fan is not operated for long periods then fan
should be run as prescribed by local regulations, or as minimum 15 minutes each month, to ensure safe operation
Ensure system operation is safe in event of power cut / power outage / disruption to power supply. If ventilation is stopped due to
disruption to power supply, ensure no risk due to build-up of hazardous substance, excessive temperature etc. Care may be needed
when restarting fan after disruption to power supply.
4.5 Most motors are supplied with permanently greased or sealed for life bearings and do not require re-lubrication. However, if motors
with re-greasing facility are supplied, then follow the instructions in the specific motor Instruction manual and nameplate supplied.
Warning: Do not mix different types of grease.
4.6 Motors with speed control via Variable Speed Drive (VSD) Frequency Inverter, should not be run in excess of nameplate speed, or
run at less than 20% of nameplate speed without reference to manufacturer, since this may damage the motor.
ATEX Ex e and Ex nA motors may not be run via VSD Frequency Inverter.
ATEX Ex d and Ex t motors may be run via PWM type VSD Frequency Inverter, where motor has factory fitted PTC temperature
sensors to control surface temperature. They may not be run at more than nameplate speed, or less than 40% of nameplate speed.
VSD manufacturer may also limit minimum switching frequency. Refer IEC EN 60079-14.
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especially for all ATEX Ex e motored