Good Practice, Good / Bad Installation; End Of Life Disposal - S&P TGT Manual De Instrucciones

8.3.4. Remove the impeller fixing bolt, washer from motor shaft and retain. Fig 4
Prepare to remove impeller, either support impeller weight if small, or use centering boss to extend motor shaft if large
impeller, to assist removal. Version 1, Fig 5, Fig 6, or release Taper lock Version 2.
Version 1: engage extractor to impeller hub and remove onto centering boss.
Version 2: loosen locking screws and insert into threaded unlock / push off holes and tighten in sequence to release taper lock.
Refer Annex 6 for more detail.
8.3.5. Impeller is withdrawn, without damage, from motor shaft.
Place impeller in safe location. Fig 9.
8.3.6. Ensure existing position of motor feet are identified and any spacing / shim material under feet, so that new motor can be
repositioned in exactly same position with same spacing / shim material. Motor fixings are removed and retained.
Lifting slings affixed to motor eye bolts, motor can now be removed and placed in a safe location.
Version 1: remove centering boss and any shaft spacer to refit to new motor.
Version 2: remove taper lock to refit to new motor.
8.3.7. Reverse process for re assembly ensuring motor and impeller relocated in original positions.
Clean new motor shaft of any protective coating / oil / grease, refit spacer to shaft Fig 12, from prior motor (if any) and affix
centering boss V1 if required, Fig 5, or refit taper lock V2.
Lift and replace motor exactly as markings, with any spacing / shim material, and replace fixings, but do not tighten yet. Fig 13.
Check motor is aligned to markings and then tighten fixings, but do not torque yet.
Check motor shaft is central and correct alignment if necessary. Fig 14.
Prepare to replace impeller, using centering boss to extend motor shaft Version 1, or refit taper lock Version 2. Support
impeller weight to ensure no damage when replacing impeller. Fig 15.
Version 1: Align key with keyway and slide impeller onto motor shaft.
Remove the centering boss, and use threaded rod to fully fit impeller to motor shaft. Fig 16.
Remove threaded rod from motor shaft, apply anaerobic adhesive to motor fixing bolt and replace, using correct torque. Fig
17.
Version 2: Align all slit holes, insert screws, position correctly on shaft and tighten in sequence then apply correct torque.
8.3.8. Rotate impeller and check tip gap in minimum 4 equi-spaced locations and adjust if necessary. Tip gap "S" to duct or impeller
gap / inlet meets data obtained in Pre-start checklist. 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 direction. Fig 18.
Adjustment can be made by adjusting motor center-line for axial fans.
Tighten motor fixings to correct torque Fig 19. Recheck gap between impeller and duct is correct in minimum 4 equi-spaced
locations. Fig 18.
If not, repeat assembly until gap between rotating and fixed materials is correct. Record these gap dimensions on inspection
document.
Affix Repair label to fan with relevant details. Fig 20.
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:-
8.3.9. Reconnect ducts, tighten all fixings to correct torque. Reconnect motor power cables.
Refer section 3 for Initial start up.
9. Good practice, good / bad installation arrangement.
Fans are designed and performance tested in accordance with four standard duct arrangements, A, B, C or D. Thus they should be
installed correctly without any adverse installation effect. Typically fans should be installed so that air entry is clear, unobstructed, non-
turbulent and discharge does not hinder airflow, since air turbulence adversely affects impeller performance.

10. End of life disposal.

10.1 Disposal must be carried out by competent personnel and in accordance with applicable International, National and Local
regulations, especially for hazardous areas. Fan equipment should be electrically isolated and locked out before any work started.
10.2 Upon end of useful life the following typical actions may apply.
10.3 Fan equipment should be run safely to purge any hazardous gas, vapour dust from inside duct work system. Surrounding area should
be ventilated to ensure no hazardous gas, vapour, dust surround fan equipment or will be created by disposal actions.
10.4 Isolate fan equipment and any associated electrical equipment and lock off.
Remove electrical connections.
Disconnect fan equipment from duct connections and cover connections with plastic sheet to prevent exposure to any residue
material in fan equipment, and any contamination of ducts.
Dismantle and dispose in accordance with applicable National and International laws and regulations, those parts whose service life
has expired.
Metals and plastics may only be recycled in accordance with local regulations.
10.5 ATEX fan equipment should not be reused in a different ATEX application.
10.6 Area may then be secured and inspected to ascertain if hazard exists prior to removal of system or replacement of fan equipment.
Fig 7
Fig 8.
Fig 11.
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Fig 3.
Fig 10