ABB SCK - Page 175

OI/SCK
-EN Rev. E Operating instruction SCK Gas Sampling System 175
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 161), press EMERGENCY STOP
switch and allow gas sampling system to cool down.
WARNING! Risk of burning in the event of contact with
components 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 ade-
quate 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 completely inserted into the kiln and the warning lamps
go out.
Instructions:
checking the cooling-
water circuit