
OPERATION INSTRUCTIONS AND PARTS MANUAL
MODELS: SF5-ECM, SD7-ECM, SF8-ECM, SF9-ECM
Rotating parts, (pulleys, shafts and belts) on fans should not be exposed. Where these components are not protected by ductwork, cabinets
or covers, appropriate guards should be employed to restrict exposure to rotating parts. Access doors should not be opened with the fan
operating to avoid foreign objects being drawn into the system. On initial start-up, a careful inspection should be carried out to ensure no
foreign material is present which could become airborne in the system.
Read installation and operation instructions carefully before attempting to install, operate or service NAKS SF Series Blowers. Failure to
comply with instructions could result in personal injury and/or property damage. Retain instructions for future reference.
Inspect unit for damage, report any shipping damage to carrier. Check all fasteners, re-tighten as required. Rotate the blower wheel by
hand to ensure free rotation. If rubbing occurs, loosen the set screw(s), re-position the wheel to the shaft center, re-tighten set screws.
Remove hood and filters from inside the cabinet. Caulk top of curb before setting unit in place. (Curb must be smaller than unit “A”
dimension). Secure unit to curb through holes located around the bottom of the unit. Tighten wheel set screw.
SF5-ECM 22" 24" 10 1/4" 11 7/8" 5" 3 7/8" 7 7/8" 16" 18 1/8" 19 7/8" 16" x 25" x 1" 1 21 7/8" x 21 7/8" TBA
SF7-ECM 22" 24" 11 7/8" 13 1/4" 4 7/16" 3 1/4" 6 7/8" 16" 18 1/8" 19 7/8" 16" x 25" x 1" 1 21 7/8" x 21 7/8" TBA
32" 32" 13 3/4" 15 7/8" 8 1/16" 4 1/4" 14" 25" 24 5/8" 25" 16" x 25" x 1" 2 31 7/8" x 31 7/8" TBA
(without motors & drives)
*Curb size to be smaller than inside cabinet to allow for flashing and roofing.