98
8020216/19YN/V3-0/2020-12| 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-3K
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 135
).
▸
Unscrew cover screw
from the cleaning opening for the sender optics (
the seal in the cleaning opening”, page 103
, steps 1 to 3).
▸
Loosen fastening screws
for hood
and remove hood.
▸
Clean the optics carefully with cotton swabs and, if necessary, light trap
as well.
Fig. 54: 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, explosive gases or dusts) when the system is at a
standstill.
▸
Take suitable protection measures against local or plant-specific hazards.
Receiver optics
Sender/receiver unit
Hood
Fastening screws
Light trap
Cover screw, cleaning opening
