8 – Door Operator / STA / LC- 2973 Rev.H
4. Ensure the keysteel is secured in the keyway and x
the drive sprocket or gear pinion to the drive shaft
Warning!
Damage due to improper xing of the
sprocket / gear pinion. Fixing the drive
sprocket at the end of the shaft may cause
excessive loading on the shaft - resulting
in shaft failure.
5.5 Installation of the emergency hand chain
(for operators with emergency hand chain)
Information:
To ensure that they work correctly, the
chain links must not be twisted.
☞ Join the ends of the emergency hand chain together
with a chain connecting link.
Warning!
To avoid damage to the operator and
the door, the emergency hand chain
must be safely secured (for example in a
‘chain keep’ ) while the door is operated
electrically.
5. Installation
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