Contador 2
Operating Instructions
Page 40 of 46
Revision 7
© 2019 – Pfeuffer GmbH
In the example, the second laser from the left is soiled.
In row 3, the figure 8 indicates a soiled laser. The 8 is shown in one of the first five columns. If it is shown
in column two, then the second laser from the left is soiled.
To remove the dirt from the light barrier, it usually suffices to blow a brief, dry shot of air into the light
barrier in the direction of fall of the product to be counted (e. g. using a pressurised air can or
compressed air).
If this does not work, then you can also clean the light barrier using a narrow, soft brush.
You can prevent soiling on the light barrier by making sure that the external air pump is always closed
during operation (refer to
chapter 6.2
). This makes sure you have a continuous air supply across the
light barrier.
CAUTION
Warning about laser radiation!
In the CONTADOR 2, only a small, diffused beam is emitted through the installed light
barriers.
The installed lasers have class 1 – laser radiation harmless
in accordance with DIN EN 60825-1 2008:5
Observe the die laser radiation accident prevention regulations BGV B2!
8.3
Inspection intervals and functional check
Component
Interval for one-shift operation
Normal functional checks:
w
m
¼ y
½ y
1 y
Check function keys
X
Labels & warning Notes are available and legible (by visual
check)
X
Check all plug-in, screw-in and clamp connections for firm
fit, tighten if necessary
X
Check the protective covering for faults
X
Check the display functions (illumination, brightness,
contrast)
X
Check the beep
X
Check the air pump
X
Perform an electrical check in accordance with VDE
See DGUV regulation 3
8.4
General maintenance information
Checks
Interval
Check the correctness and firm fit of the protective panels.
m
Check the correct positioning of the lasers (refer to
chapter 8.5
m
