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7 Switch on the power supply.
Power
▷ The
LED flashes yellow (0.2 s on/off). After
1
10 s, the TC accepts the new setting and
2
yellow or green, see table on page 8 (Com-
missioning).
Commissioning
Indicators and operating controls
= power supply
Power
Power
Power
Power
= operating signal
1
= valve 1
1
1
1
2
2
2
= valve 2
2
= reset button
The LEDs can display messages using three colours
Power
(green, yellow, red) and permanent
light
1
:
2
LED
Messages/Operating status
green Power supply OK
Power
Power
yellow TC is ready for operation; no safety
interlock* input signal
1
Power
1
TC is ready for operation; active
Power
2
green
2
safety interlock* input signal
Power
1
green V1 is tight
1
Power
2
yellow V1 is untested
2
1
Power
Power
2
yellow Tightness test is running on V1
1
Power
2
red
V1 is leaking
1
1
Power
green V2 is tight
2
2
1
Power
yellow V2 is untested
2
1
yellow Tightness test is running on V2
2
1
red
V2 is leaking
2
All
yellow Initialization
* Linking of all the relevant safety control and switching
equipment for the use of the application. The burner
start enable signal is issued via the safety interlock
output (terminal 6).
▷ For further messages, see page 8 (Assis-
tance in the event of malfunction).
Switch on the mains voltage.
▷ All LEDs are yellow for 1 s. The TC is in the
initialization phase.
▷ The test starts according to the test instant
(Mode) which has been set.
Mode 1 or Mode 3, test before burner start-up:
voltage is applied to terminal 10 (thermostat/
start-up signal ϑ).
Or
Mode 2, test after burner run: the TC shows the
Power
last operating status. In the case of untested
valves, the LEDs
There is mains voltage at terminal 1 and renewed
test after switching off the voltage to terminal 10
(thermostat/start-up signal ϑ).
Power
r
P o w e
1
2
Power
or flashing
1
2
Power
1
and
are yellow.
1
2
2
Power
▷ During the test, the
Power
yellow.
is
The
and
1
▷ Both valves are tight.
2
1
2
Mode 1 or Mode 3: the enable signal is issued via
terminal 6 when voltage is applied to terminal 5.
Or
Power
Mode 2: the enable signal is issued via terminal 6
Power
when voltage is applied to terminals 10 and 5.
The
or
1
▷ A valve is leaking.
2
▷ Voltage at terminal 12. A fault signal is output.
Power failure
▷ If the power fails briefly during the test or during
operation, the tightness test will restart in accord-
ance with the test procedure described above.
▷ If there is a fault message, the fault is displayed
again after a power failure.
Assistance in the event of
malfunction
CAUTION
Electric shocks can be fatal!
– Before working on possible live components,
ensure the unit is disconnected from the power
supply.
– Fault-clearance must only be undertaken by
authorized trained personnel!
– (Remote) resets may only be conducted by au-
thorized trained personnel.
• Faults may be cleared only using the measures
described below.
• Press the reset button to test whether the TC
restarts.
▷ If the tightness control will not start even though
all faults have been remedied, remove the entire
TC (in the case of TC 3, including auxiliary valves
and corresponding valve block) and send it to
the manufacturer for inspection.
? Fault
! Cause
• Remedy
?
red and permanently lit?
Power
! There is over-/undervoltage. The TC performs a
1
safety shut-down.
2
• Check the mains voltage. As soon as there is
no longer over-/undervoltage, the TC returns to
normal operating mode and the
green. It is not necessary to reset the device.
GB-8
Power
1
or
1
2
2
1
LEDs are green:
2
1
LED is red:
2
Power
LED flashes
LED is
1
2
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