Roller Door Coning

If the curtain rolls up un-evenly (cones out at one end) and the bottom rail appears out of parallel with door roll and guides, confirm the following: a) Brackets are level with each other b) Axle is correctly centralised in roll (see step 3.0). If brackets are level, removing coning by moving the axle through the roll in the opposite direction to coning and distance roughly equal to length of coning

Preventing Coning.

If an automatic operator is fitted the curtain should be pinned prior to setting up the operator, by putting suitable length screws through curtain layers and into drum wheel at each end of curtain, to lock curtain in place prevent potential conning occurring due to operator driving curtain from one end.

How to Fix a roller door that has coned, click here to watch a video