42/23-81 EN Rev. 4 System Manual SCK Gas Sampling System 173
How to check the cooling-water circuit for leaks:
Step Procedure
1
Switch service switch to ON position (see Operating the service
switch on page 159), press EMERGENCY STOP switch and
allow gas sampling system to cool down.
WARNING! Risk of burning in the event of contact with compo-
nents that are still hot. Do not touch components until they have
cooled down to below 50 °C.
2
Switch off the cooling-water pump -M51 at the motor breaker -
F37 (1).
Note: You can also switch off the cooling-water pump at circuit
breaker -F36 (2).
3
Sight-check the cooling-water circuit.
If ... then ...
you locate a leak,
replace component and
ensure adequate sealing.
no leak was found but pres-
sure continues to drop in
operation,
follow steps 3 - 6.
4
Drain the cooling-water circuit.
5
Fill cooling-water circuit with compressed air, max. 3 bar
(3000 hPa).
6
Spray cooling-water circuit with leak detection spray.
7
If you locate a leak: replace component and ensure adequate
sealing.
8
Fill up cooling water again and vent (see Preparing the cooling-
water circuit on page 114).
9
Switch the cooling-water pump -M51 on again at motor breaker
-F37 or circuit breaker -F36.
10
Turn service switch back to OFF position and insert probe
again using the controller.
WARNING! Probe moves into the kiln. Do not stand in the area
of travel of the probe or probe carriage until the probe is com-
pletely inserted into the kiln and the warning lamps go out.
Instructions:
checking the cooling-
water circuit
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