Zap JACKSHAFT MOTOR-CONTROL SYSTEM 815-RL - Manual (Page 8)

3
An optional Beeper model 850 may be fitted to
sound at the start of each door movement and
provide audible feedback during programming
and door position calibration.
PREPARATION
Ensure that the door is free to move by hand
without any stiffness or misalignment of track
sections, which may cause the roller wheels to jump
over the track joints. If the door movement is stiff at
any point, the roller wheels should be adjusted to
allow the door to be moved by hand pressure
without any significant force. Any misalignment of
track sections should be corrected to ensure the
door runs smoothly.
Ensure that the door is reasonably well balanced
preferably with the counterbalance spring tension
biased slightly open. (Pic 4)
Counterbalance springs will weaken over time and
the balance can become biased closed. The Zap
obstruction sensing system automatically adjusts to
changes in door balance over a period of time.
However springs should be checked and adjusted
on each service visit at least once per year or 1500
door cycles, whichever is the sooner.
FITTING THE SUPER-DRIVE
OPERATOR
The Super-Drive Jackshaft Operator kit includes an
anti-torque arm, which prevents the operator
rotating and which is bolted to the Super-Drive
back plate using the motor cover back spacer
provided and secured to a spare hole on the
jackshaft bearing plate or onto the doorframe.
It is preferable to lightly screw the torque arm to
the bearing plate hole or doorframe securing
point before mounting the Motor Cover and
Super-Drive. (Pic 5)
Now slide the Cover back onto the door shaft as
shown in the picture. (Pic 6 overleaf)
Pic 4
Pic 3
Pic 5