Maersk Container Industry Star Cool SCI-20 Operating And Service Manual page 98

1. Check that a CA flushing damper is available (item no. 818251B). If the damper is not available,
it is possible to use the injection ports found on some unit models. Skip to step 6 if using the
injection ports.
2. Press to enter the Service menu. Select line S01 Manual operation. Then change line M01
Operating mode to MANUAL.
3. Remove the original air ventilation damper from the unit.
4. Install the damper for CA flushing (item no. 818251B).
5. Return the unit to Automatic mode. Press
operation. Then change line M01 Operating mode to AUTO.
6. Press to enter the Operation menu and change line O13 to ON. This overrides any automatic
vent opening in case of out of range gas levels for 4 hours. A countdown clock will be visible
in the main display. The unit will automatically go into Normal mode when the time limit is
reached.
7. Check that the gas injection tanks/bottle have proper operation handles and pressure gauges
in order to control the gas flow correctly.
8. Connect both the N
9. Monitor the supply temperature throughout the process. It should not be too much below the
setpoint (each shipping line has an allowance during the flushing process, however generally
the supply setpoint should never be undershot without approval).
10. Inject N until the O
2
during CO injection. Note the sensors need some stabilization time. During injection, ensure
2
that the pressure is not too high. The recommended pressure is 120 PSI. If water comes out
the drain hose, then the gas injection pressure is too high.
11. Inject CO until the CO
2
some stabilization time. During injection, ensure that the pressure is not too high. The recom-
mended pressure here is 100 PSI.
12. Once the CO level has been reached, stop flushing. Wait for 8 minutes whilst monitoring the
2
gas levels as they stabilize. This is to ensure that the gases are thoroughly mixed and that the
controller readings are accurate.
13. If more CO is needed, inject a little more gas.
2
14. Ensure that there is water in the defrost drain hose.
15. The flushing is now completed. Disconnect the N
flushing damper, continue to step 16.
16. When the O and CO
2
the Service menu. Select line S01 Manual operation. Then change line M01 Operating mode to
MANUAL.
17. Replace the original air exchange damper so it is fully closed and secured.
18. Return the unit to Automatic mode. Press
operation. Then change line M01 Operating mode to AUTO.
and CO gas tanks/bottles to the damper or injection ports.
2 2
level has reached the O
2
level has reached the CO
2
setpoints are reached, set the unit to Manual mode. Press
2
to enter the Service menu. Select line S01 Manual
setpoint plus 1%. The O
2
setpoint minus 3%. Note the sensors need
2
and CO gas tanks/bottles. If using the CA
2 2
to enter the Service menu. Select line S01 Manual
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level will drop further
2
to enter