Plastec Adjustable Dampers - Manual (Page 9)

PL ASTEC VENTILATION, INC.
Installation, Operation & Maintenance Manual
REASSEMBLY INSTRUCTIONS
PLASTEC UTILITY AND STORM BLOWERS
Before beginning these instructions, place this fan on a bench or table top that can
support its weight.
1) Stand the motor on end, so that the shaft is pointing vertically.
2) Set the motor plate onto the C-face and align bolt holes. If motor plate does not fit
flush on the C-face, use a small hammer or dead blow mallet to seat the plate onto the
rabbet. You should not need much force to seat the plate. Secure the motor plate with
four bolts, lock washers and washers.
3) Check the fit of the impeller bushing on the motor shaft. If it slides on easily, then push
it onto the shaft and tap to seat it on the shaft shoulder. If it is a tight fit, lubricate
the inside of the bushing with 3-in-1 oil or a similar product. Set the impeller on top
of the shaft so it sits level. Use a driving rod and mallet, on bushing only, to drive the
impeller onto the shaft until it touches the shoulder. Do not hit with excessive force or
the bearings may be damaged. Remove any debris that was cut from the inside of the
bushing. If there is a gap between the tip of the shaft and the top of the bushing, fill it
with stainless steel washer(s).
4) Secure the impeller on the shaft with supplied bolt, lock washer and washer.
5) Cover the bushing with the hub cap and use a mallet to seat it properly. It may be
necessary to cut out the raised ring on the inside of the hub cap with a box knife.
6) Select the orientation of the fan housing. There are eight possible orientations.
Remember, if the fan is being installed in a weather hood, the motor will be upside down.
Use eight Torx head screws to secure the motor assembly to the fan housing. Inspect
visually and test electrically before installing the fan.
(See Illustrations)
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July 2012