92
8024493/AE00/V1-0/2020-09| SICK
O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER SP100 Ex-2K
Subject to change without notice
12
MAINTENANCE
Clean the outside of the sender/receiver unit in regular intervals. Remove deposits with
water or mechanically using suitable auxiliary means.
Clean the optical surfaces when deposits can be seen or before contamination reaches the
limit value (30% for warning, 40% for malfunction).
12.5.1
Cleaning the optics of the sender/receiver unit
▸
Remove the sender/receiver unit from the duct.
▸
Close off the flange with tube with a blind flange (
see “Fastening technology”, page 126
).
▸
Unscrew cover screw (4) from the cleaning opening for sender optics (
▸
Loosen fastening screws (2) for protective cover (1) and take the protective cover off.
▸
Clean the optics carefully with cotton swabs and, if necessary, light trap (3) as well.
Fig. 44: Cleaning the optical surfaces
If contamination on the glass surfaces cannot be removed with the optics cloth, clean
the glass surfaces with soap suds and then dry.
WARNING:
Hazard through gas and hot parts
When cleaning the sender/receiver unit, toxic gases which can lead to poisoning can
escape and hot parts can cause burns.
▸
Dismantle the sender/receiver unit from the duct for cleaning and then fit it back on
again.
▸
Only carry out assembly work on systems with hazard potential (higher internal duct
pressure, hot, aggressive, potentially explosive gases or dusts) when the system is at
a standstill.
▸
Take suitable protection measures against possible local hazards or hazards arising
from the equipment.
Receiver optics
Sender/receiver unit
Protective cover
Fastening screws
Light trap
Cover screw