107062-12 EN FR26 GLO 501 Printed in France  59
Maintenance and
Troubleshooting
Overview
This chapter contains operational test procedures, troubleshooting, cleaning, maintenance, and repair
instructions.
IMPROPER MAINTENANCE
Strictly adhere to all maintenance and troubleshooting instructions.
Failure to comply with these instructions could result in death or serious injury.
Operational Test
To ensure operational readiness, perform the operational test at  least  once a  day and  every time the  light
curtain  is  repaired  or  powered  up.   The  operational  test  consists  of  passing  a  test  rod  (included  with  unit)
through the sensing field to ensure the light curtain will  detect it (see figure 4-1).  The included test rod will
have a diameter equal to the resolution of the light curtain.  The resolutions of the FF-SB Series light curtains
are as follows:
Light Curtain Resolution
FB-SB12 22 mm (0.87 in)
FB-SB14 and FF-SB15 35 mm (1.38 in)
Figure 4-1  Operational Test with the Test Rod