Erreka NAOS NASR70E Manual Del Instalador página 53

Joining and attaching the drag arms
2
Tightening the chain
Lubricating the guide-track
5
A
B
P278J
5
2
A
P278J2
A
B
P278K
For sectional and tilting doors with side springs:
1 Attach the door anchor (2) to the carriage (5) using
the drag arms (A) and (B).
For counterbalanced doors or with torsion
springs:
1 Attach the NPTOR curved fitting (2) to the carriage
(5) using the drag arm (A), in accordance with the
installation instructions for the NPTOR fitting.
1 Tighten the nut (A) and then loosen it slightly until
the bushing (B) can be turned by hand.
2 Check that the chain is taut by carrying out several
opening and closing cycles of the door.

Excessive tautness may lead to breakage or
premature deterioration of the parts.

If the chain is loose, a noise will be heard when
closing the door.
1 Apply lubricant grease throughout the length of the
carriage-track contact area.
NAOS garage door opener operator
INSTALLATION
49