ABB SCC-S, Operator'S Manual, Page: 19 / 40

19
Peltier Cooler Control
Cooler Control
State Indication Controller LED K1 Controller LED K2
After start-up > 5 °C
(room temp.)
Off (pump off & status alarm) Lights up constantly yellow (cooling)
After lead time end
(approx. 10 min)

5.5 °C
Lights up yellow (pump is
switched on
1
, status alarm
switches to "good" state)
Lights up constantly yellow (cooling)
Normal operation 3 °C Lights up yellow Blinks (cooler regulation)
> 3,5 °C Lights up yellow Lights up constantly yellow (cooling) Cooler overloaded
> 5 °C Off (pump off & status alarm) Lights up constantly yellow (cooling)
< 2,5 °C Lights up yellow Off Ambient temperature
too low
< 0 °C Off (pump off & status alarm) Off
1 if no condensate alarm is present and sample gas pump us switched on
("Pump" push-button lights up green)
See section "Troubleshooting", page 28, for further information on cooler
problems.
Changing the Sample Gas Outlet Temperature
The set point for the sample gas outlet temperature (factory-set to +3 °C) can be
changed at the temperature controller:
1 Press key P; the set point is displayed.
2
Use arrow keys to adjust the set point.
3 Press key P; the new set point is stored.