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Section VIII - Power$ync II
™
Operation
38 Quincy Compressor
®
- QSD™
!
WARNING
Start-up
The Power$ync II
™
four-line, forty-character display
provides information in English, should a problem occur.
If the operating requirements were properly noted when
the machine was ordered, it will be completely ready to
run once installed. All settings have been adjusted at the
factory per the instructions on the order. If the operating
requirements have changed since the machine was
ordered, the control can be easily adjusted for new
parameters.
NOTE
The voltage unbalance between phases should not
exceed ±5%. If this unbalance is not corrected,
the current draw may be excessive.
Once the wiring between the disconnect and the
compressor is complete, the discharge piping has been
connected to the air system and the water source for
water-cooled units is connected and turned on, close the
disconnect to provide power to the control. The power-
on indicator will light on the control panel and the
computer will run a short diagnostic program to confirm
that all software and hardware are functioning properly.
Should a software or hardware problem be identified, the
computer will display the nature of the problem. If the
problem is minor, the computer will allow the
compressor to operate after an operator confirms
knowledge of the problem. If the problem is major, the
computer will prevent the compressor from operating in
Power$ync II
™
Mode until the problem has been
corrected. In most cases, even with a major fault in the
computer control system, the compressor can still be
operated in Back-up Mode until repairs can be made. A
complete description of these diagnostic message
displays can be found under the Power-up Displays
heading of this section.
The diagnostic program also checks the function of the
LCD display screen. If the controller cannot properly
communicate with the display, it will flash all the amber
warning lights to draw attention to this fact. If there is a
fault with the LCD display’s memory, then only the RED
LED’s will flash.
After the diagnostic program has determined that all
systems are functional, the computer will display a
message prompting the operator to either press ENTER
to move into the menu section or press START to begin
compressor operation.
Under no circumstances, should any welding be
done on the compressor package. Welding can
damage the computerized controller.
Power-up Displays
This section will identify minor fault conditions, major
fault condition that will prevent the compressor from
running in any mode of operation and major fault
conditions that will prevent the compressor from running
in the Power$ync II
™
Mode, but will allow Back-up
Mode operation.
When power is turned on to the unit, the computer will
run a short diagnostic program to confirm that the
machine is ready to operate. If the diagnostic check finds
a problem with the computer or sensors, a message will
be displayed describing the nature of the problem.
There are two categories of problems that can be
detected, those which would result in unsafe operating
conditions (the computer is programmed to prevent the
compressor from running if this type of problem is
detected) and those which should be corrected as soon as
possible, but will not result in an unsafe operating
condition. The computer is programmed to allow the
compressor to operate with minor problems that do not
affect the safe operation of the compressor after an
operator acknowledges the problem by pressing ENTER.
Always disconnect and follow lockout/tag-out
procedures before attempting any repair or
adjustment to any electrical component on this
compressor. Failure to do so could result in
serious injury or death.
!
WARNING