Carrier TRANSICOLD Vector 8700 - Loss of Standby Power; Engine Control; Engine Start-Up Sequence

4–3 62-12259
NOTE
The unit will not restart for at least 30 seconds following a shutdown.
4.3.2 Loss of Standby Power
When the unit is running on standby power and power is lost, alarm 00073 No Power - Check Power Cord will be
activated and the unit will shut down for five minutes. If standby power is restored, the unit will restart in standby
immediately. If standby power has not been restored after five minutes and the NO A/C POWER configuration is
set to “ALARM and SHUTDOWN”, the unit will remain off. If the NO A/C POWER configuration is set to “ALARM
and SWITCH TO ENGINE”, then the unit will switch to diesel and restart.
After 15 minutes of running in diesel, the unit will “retry-to-standby” by shutting down and attempting to restart with
standby power. If standby power is still not available (AL00073 is still active), the unit will restart in diesel and
attempt “retry-to-standby” in 60-minute intervals.
When the NO A/C POWER configuration is set to SWITCH to ENGINE, the unit will automatically switch from
standby to engine operation when voltage is lost and switch back to standby operation when voltage is restored.
There is no alarm generated when this option is selected.
4.4 Engine Control
Engine control consists of engine start-up and speed control.
4.4.1 Engine Start-Up Sequence
On command to perform a Start-up, the main microprocessor will supply power from PM to the fuel pump (FP) and to
ENCU-44. This signals the ECU that engine operation is required. The control system will then enter the engine start
sequence. During the start sequence the engine is operated in low speed. Following start, the refrigeration system will
then operate in the mode(s) required for temperature control.
The engine start sequence consists of periods of time with the engine preheater (EPH) and starter (SM) energized
and de-energized for up to three start attempts (see Figure 4.1), the pre-heat time will vary in duration based on
engine coolant temperature (refer to Table 5–1).
Figure 4.1 Auto Start Sequence
PREHEAT
(If required)
FIRST
ATTEMPT
SECOND
AND
THIRD
ATTEMPTS
15 Seconds
STOP
3 to 10
Seconds
0 to 30
Seconds
PREHEAT
(If required)
ENGINE
RUNNING
(preheat)
CRANK
(with preheat)
5 SEC. BUZZER
5 SEC. BUZZER
0 - 180
Seconds
following start
0 to 30
Seconds
0 - 180
Seconds
following start
3 to 10
Seconds
ENGINE
RUNNING
(preheat)
CRANK
(with preheat)