Checking Protective Installations - ABB ProKiln GAC400 Operating Instruction

106 ProKiln GAC400 PROBE GAS SAMPLING SYSTEM | OI/GAC400-EN REV. A
... 11 Maintenance
... Maintenance work
3. Result of function test:
• If the residual current circuit breaker trips, then the
residual current circuit breaker is working as intended.
• If the residual current circuit breaker does not trip, then
shut down the complete system, secure against start-up,
and have it repaired by trained, expert personnel.
4. Switch residual current circuit breaker -5F3 back on.

Checking protective installations

Safety measures
WARNING
Dangers when checking protective installations.
Always take the following safety measures when performing
this work:
• Wear the general protective equipment.
• Press the EMERGENCY STOP switch immediately if anyone
is still in the danger area around the retractor after the
warning lamps light up or the warning buzzer buzzes.
Explanation of safety measures: Safety instructions for
maintenance work on page 98.
1
Maintenance interval
• at least once a year
The EMERGENCY STOP -15S7 and -150S3 switch should be
checked after shutting down the kiln, if possible, as the test
procedure disables all monitoring mechanisms.
If it is necessary to check during operation (while the kiln is
running), the probe retractor must be located up to maximum
one meter from the rear end position (S0) when you actuate the
EMERGENCY STOP -15S7 or -150S3 switch. This will prevent
uncontrolled heating of the probe tip if an error occurs at the
same time, that could leave the probe inside of the kiln.
Requirements
The following conditions must be met:
• The sampling probe is not fully inserted into the kiln
(maximum one meter from the rear end position S0).
• Operation/Service Mode -50S15 switch must be in the
Operation Mode.
Instructions: checking the EMERGENCY STOP switch
Proceed as follows to check the EMERGENCY STOP switch -15S7
or -150S3 (note: two people should perform this procedure):
1. Operation/Service Mode -50S15 switch must be in the
Service Mode.
2. Switch system to manual mode on the HMI (if this has not
already been done).
Path: Home ► Manual
3. Retract gas sampling probe out of the kiln.
Path: Main ► Probe Position ► Go S0
WARNING! The probe moves out of the kiln. Do not stand in
the area of travel of the probe or probe buggy until the probe
has reached its end position.