Probe Retractor: Checking And, If Necessary, Adjusting The Position Indicator (Probe End Position) - ABB SCK Operating Instructions Manual

Probe retractor: Checking and, if necessary, adjusting the position
indicator (probe end position)
Meaning
Maintenance interval
Illustration
Function of the
position indicators
Safety
measures
204
During operation, the probe position indicators may need to be readjusted.
This can be causes, for example, by loose fastening elements.
 every six months (or as required)
There are two inductive position indicators and one mechanical position
indicator in the probe retractor. The two inductive
mounted on the probe carriage and travel together with the probe, the me-
chanical position indicator
The above-mentioned position indicators signal to the controller that the gas
sampling probe has reached the respective position. The position indicators
given in the above illustration signal the following positions:
No. Limit switch
1
Inductive position indi-
-B71
cator
2
Inductive position indi-
-B72
cator
3
Mechanical position
indicator
Always take the following safety measures when performing this work:
 Wear the general protective equipment.
 Before commencing any work on the gas sampling system, turn the ser-
ON
vice switch to
switching (with a padlock).
 Additionally press the EMERGENCY STOP switch before working on the
retractor or probe.
 Do not enter the danger area around the retractor until it is at standstill
and the warning lamps and buzzer are off and the flap valve is closed.
 Do not perform the work until the gas sampling system has cooled
down.
Operating instruction SCK Gas Sampling System
(3)
is permanently mounted on the retractor.
The probe is completely inserted
into the kiln.
The probe is completely retracted.
The probe is retracted so far that it
-S72 has reached the mechanical limit of
the pneumatic motor.
and secure the service switch against unauthorized
(1, 2) indicators are
Signal/position
OI/SCK-EN Rev. E