Atlas Copco QAS 60 Pd - Qc4002 MkII Controller Operation

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4.4 Operating and setting Qc4002™ MkII
4.4.1 Starting
– Turn the battery switch to ON.
– Turn the S20 button to the ON position to activate
the Qc4002™ MkII controller.
– Select the correct application type and the correct
mode on the Qc4002™ MkII module (see
“Overview of applications” on page 61 for the
possible selections).
– Make the correct wirings and program the
applicable parameters (see “Standard
applications” on page 54 for more details).
– When in SEMI-AUTO mode:
• Use the START button to start-up the
generator.
• Allow the generator to start-up till voltage and
frequency are OK (LED U/F OK lights up).
• Press the GB open/close button to close the
generator breaker.
– When in AUTO mode:
• The generator will start-up automatically and
close the contactors depending on the selected
application.
4.4.2 During operation
Regularly carry out following checks:
– Check the display for normal readings.
– Check for leakage of oil, fuel or cooling water.
– When single-phase loads are connected to the
generator output terminals, keep all loads well-
balanced.
– If circuit breakers have tripped during operation,
switch off the load and stop the generator. Check
and, if necessary, decrease the load.
4.4.3 Stopping
– When in SEMI-AUTO mode:
• Press the GB open/close button to open the
generator breaker.
• Press the STOP button once to stop the
generator. The unit will go into cooldown and
stop after the cooldown period.
• Press the STOP button twice to stop the
generator immediately, without going into
cooldown.
– When in AUTO mode:
• The generator shuts down automatically
depending on the selected application.
• If you want to stop the generator manually, go
first to SEMI-AUTO mode and follow the
procedure for stopping in SEMI-AUTO mode.
Before setting the controller make
sure that the Qc4002™ MkII is
NOT in AUTO mode. This will
prevent the unit to start up
automatically without prior notice.
Also, in AUTO mode some
parameters are unavailable.
!
Avoid letting the engine run out of
fuel. If this happens, priming will
speed up the starting.
Avoid long low-load periods
(< 30%). In this case, an output
power drop and higher oil
consumption of the engine could
occur. Refer to ‘Preventing low
loads’.
Never turn the battery switch to
OFF during operation.
The generator’s doors may only
remain opened for short periods
during operation, to carry out
checks for example.
!
!
!
!
Not allowing the unit to cooldown
properly can lead to severe damage
to the engine!
!