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Door Types and Considerations
ENGLISH
Doors with bent take-up spools- These are doors with bent spools, that
pull the head unit’s driving wheel proportionately skew. The product suffers
damage and exhibits all kinds of fault conditions, most commonly that of
moving short distances.
Door Condition Checklist
ý
Uneven Floor / Door Mounted Skew
ý
Unbalanced door (tends to open by itself due to
over-tensioned springs)
Door
Curtain
ü
Door lands flat on floor and doesn’t recoil
ü
Door equally easy to lift, or to pull down
ý
ü
Internal wheel
(plastic or metal)
Tube
Bent, warped, or skew spool wheels
This causes damage to the product and is
very common on badly installed doors and/or
very cheap doors!!
8
The start of the door curtain must be affixed at
the end, to the door spools using a tek screw. This
helps prevent problems and also secures the door
better against intrusion