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2000 Fire Door-Fan Manual updated 2002-05-28 Page 55 of 58
Possible Mechanical Problems
Panels Will Not Fit Doorway
Try using an alternate doorway. If doorway is too large, use a 2" x 4" or a 2" x 3" block against the side of the
panels, or panel width extenders to 48" (available from Retrotec). If the flow element rubs against the wall,
door, or any other obstruction, try turning the panels upside down or contacting panels with another part of
the door frame. If the doorway is less than 30" wide, try fitting the panels against a different part of the door-
frame, or cut a plywood sheet to fit.
Panels Fall Out of Doorway
If one panel is put into the doorway at moderate pressure, and then the second panel is put in with a lot of
pressure, the doorway may stretch out and, thereby, loosen the first panel. The obvious solution is simply to
re-tighten the first panel. Another solution is to put the upper panel in first and apply more pressure at the
top than at the bottom. But be careful. If the expander mechanism has been over pressured, it may have to
be replaced. Clean door frame.
Weather-strip Wears
Peel off and replace in minutes for best doorway grip and appearance. To peel off the old material, simply catch
an edge and roll it back.
Gauge Needle Stuck
Needle rests against black post with gauge level - (must be level) 2 or 3 turns of the adjustment screw have been
made but the needle won’t move.
Cause - magnetic linkage on needle has jumped off.
Solution - suck hard on one of the red tubes and wait 20 seconds, if that doesn’t work then blow on the tube. The
needle should jump around then move back to zero.
Problem - when the zero adjustment screw is turned in or out (particularly out) all the way until increased
resistance is felt, continued adjustment will destroy the gauge.
Still stuck? - adjust screw all the way in (clockwise) till resistance is felt, turn screw out 3 to 4 turns, if needle
stays on post, repeat blowing technique.
Needle in mid-scale
- (when level) and doesn’t move or moves jerkily, look for needle touching faceplate. Gauge
must be returned to Retrotec.
Needle in mid-scale
- (when level) due to a crimp in the tubing. Blow gently in each end of the tube corresponding
to the stuck gauge. If the gauge moves when blowing in one but not if blowing in the other than the latter tube is
crimped.
Solution - move the tube bundle around in the control box until the crimp disappears.
Gauges Do Not Read Properly or Stick
Ensure they are vertical and level. Check tubing to remove pinches, heavy feet, or other constrictions. Suck
or blow HARD on open tube to unstick the needle. Remove any drops of moisture or spit in tube ends. Check