33
and the nuts
Clean the installation
V
V
Drive unit
Drive unit
V
V
V
Holding power in closed position
V
Transmission elements: such as:
toothed belt, flat belt, cables,
rods, and chains
V V
V
Carrying- and counter pressure
rollers/ traveling carriages
V V
V
Carrier rails
V
V
V
Open/ close positions
V
V
Control unit
Electrical connections
V
Control functions
V
V
Program switch (Check all the
positions)
V
Emergency battery
V
Control Elements
All the control elements: such as:
sensor, radar, key operated
switch , contact carpet
。
V V
V
Safety elements
Reversing /stopping mechanism
V
V
V
Door locking/ manual unlocking
mechanism
V V
V V
Mechanical emergency opening
V
V
Monitoring switch
V
V
V
Light barrier
V
V
V
Additional safety elements
V
V
V
Miscellaneous
Stickers/rating plates
V
V
6.3 Troubleshooting:
Warning
：
Before doing any check and other work on the control unit , always pull out the power
plug
Malfunctions
Visual checking
Reason
Corrective/ solution
Door is
blocked in
any position
Emergency stop (X4 control
unit), Emergency stop
terminals 27.28)No LED light
on control unit.
No wire link or defective
connection
PSA on manual
NO power or fuse
fine-wire defect
Make a bridge connection
Check
PSA on automatic