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8012428/YWL2/3-0/2016-08| SICK O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER T
Subject to change without notice
MAINTENANCE 5
5.2 Maintenance on the sender/receiver unit and reflector
Clean the outside of the sender/receiver unit and reflector in regular intervals. Remove
deposits with water or mechanically using suitable auxiliary means.
Clean the optical interfaces when deposits can be seen or maximum contamination
allowed has been reached. Limit values are:
DUSTHUNTER T100: 20% for warning, 30% for failure
DUSTHUNTER T200: 30% for warning, 40% for failure
5.2.1 Maintenance on the sender/receiver unit
DUSTHUNTER T50
▸ Set the measuring system to “Maintenance” mode (see “General”, page 93).
▸ Loosen CAMLOCK clips of the sender/receiver unit (see “Sender/receiver unit DHT-Txx”,
page 17) and remove the electronics unit from the mounting attachment.
▸ Carefully clean glass pane with an optics cloth.
▸ Fasten the sender/receiver unit again.
▸ Resume Measuring mode.
DUSTHUNTER T100 and T200
▸ Set the sender/receiver unit to “Maintenance” mode (see “SOPAS ET menu: DH T100/
Maintenance/Maintenance”, page 63) and enter the Level 1 password.
▸ Loosen the knurled screws and swivel the enclosure to the side.
▸ Close the mounting flange with cover (see “Miscellaneous”, page 125).
▸ Switch to the “Adjustment / Manual adjustment / Motor control” directory and click
“Mounting” under “Pivoted shutter sender/receiver”.
The pivoted shutter then moves to the cleaning position.
Fig. 64: SOPAS ET menu: DH T100/Adjustment/Manual Adjustment/Motor control
▸ Remove pivoted shutter cover (1), press tension spring (7) together and take pivoted
shutter (3) off axis (6).
▸ Carefully clean glass pane (5) (both sides), zero point reflector (2) and sender optics (4)
with an optics cloth.
NOTE:
▸ Do not damage any device parts during maintenance work.
▸ Do not interrupt the purge air supply.
Contamination measurement depends on the type.
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