FAQ’s:
1. Motor does not work.
Power supply is interrupted.
Check cable connection between motor and socket.
Check if there is a power failure.
2. Shutter does not close.
There is a malfunction of shutter installation.
Check entire equipment and remove the malfunction.
Pay special attention to:
• Dislocated lamella – because not locked into sideways position
• Sideways locking of lamella – due to damage
• Funnel-guides at upper end of rails
In order to do this cover of shutter box may have to be opened. (Note: according to DIN 18073 shutter
box lid must be easily accessible and removable).
3. Shutter is not heavy enough.
Weigh it down, e.g. insert suitable flat bar into the lowest lamella.
4. Shutter does not stop at programmed limits.
Strap is overstretched.
Do a reset.
5. Programmed times are shifted.
Possible cause:
• (brief) power failure
• Internal clock stopped. Programmed times are consequently shifted. Readjust timer control (see p.4)
6. Humming sound when under heavy load.
Load is larger than 180N / 18kg. Make sure that shutter is not stuck. Check the pulling weight by
using the strap and with the aid of mechanical scales. When pulling at the strap the weight shown on
the scales will lessen by the force needed to move the strap. The difference between your body
weight and the measured value when pulling the strap must not exceed 18kg.
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