FRICK QUANTUM CONTROL PANEL
OPERATION
S90-010 O
Page 72
OPERATION OVERVIEW
Initial Setup Procedure:
1. Factory Setup should be performed by a Factory Rep-
resentative or Distributor to setup the customer spe-
cific control features which should not need to be
changed by operators.
2. Panel Setup is performed to setup panel features and
options which can later be changed by an operator.
Features such as the panel time, and screen color are
changed here. Options such as condenser control are
enabled here. The operator can avoid viewing and en-
tering settings of unused controls by keeping unused
options disabled.
3. Calibrate the control devices.
4. From Control Setup enter and setup the control settings.
5. From Security Setup establish the desired access rights
of the operators.
6. The Operating Status screens now provide quick ac-
cess to the most important information and controls of
the compressor unit and the subsystems.
Compressor Start-Up Procedure:
• Starting is shown for the Compressor status on the
“Operating Status” screen.
• All the safeties are checked. If any shutdown condition
is present the corresponding alarm message is shown
and the compressor is prevented from starting.
• The oil lubrication is checked. A Prelube pump needs a
5 lb oil pressure differential to allow the compressor to
start. A full time pump needs a 20 lb Oil Pressure differ-
ential to allow the compressor to start. Other compres-
sor manufacturer’s Oil Pumps need a 30 lb Oil Pressure
differential to allow the compressor to start. If one of
these conditions is not present an alarm message is
issued and the compressor is prevented from starting.
• The Slide Valve position is checked to see if it is less
than or equal to the “Highest Slide Valve Position to
allow starting the compressor” setpoint. If the Slide Valve
position is higher than this, the compressor is pre-
vented from starting.
• If none of the above conditions has prevented the com-
pressor from starting, a timer delay is started that re-
quires the starting conditions to remain satisfied for a
period of five seconds for all compressor model types
except [Other Compressor Manuf.]. The “Other” com-
pressor model type uses a 20 seconds delay. After the
time delay the compressor and the Recycle Delay timer
are started.
• If within 30 seconds the Compressor Start Auxiliary
input has not been energized, or Motor Current is not
detected, then an alarm message is issued and the
compressor is shut down.
• When the compressor begins running, the Oil Pres-
sure values are in a state of change. For a period of 10
seconds after the compressor status switches to “Run-
ning”, the low oil pressure alarm and shutdown safe-
ties are ignored.
Compressor Stopping Procedure:
During the compressor stopping, the Slide Valve unload so-
lenoid remains energized until the Slide Valve is unloaded to
or below the “Highest Slide Valve position to allow starting
the compressor” setpoint. If the slide valve does not unload
below this setpoint within 5 minutes, the alarm message
“Compressor Unable to Unload - Alarm” is issued.
Setup for Automatic Control:
In order to operate a compressor at peak efficiency, under
full load and part load conditions complex control sequences
must be used. In order to obtain the efficiencies, automatic
control is almost mandatory. Automatic Control of the Slide
Stop and Slide Valve increases the compressor efficiency
over a wide operating range. The following steps (which
are relevant) should be taken to control in Automatic:
• The compressor should be in automatic (automatic cy-
cling) so the compressor will start and stop according
to the Autocycle setpoints.
• The Oil Pump should be in auto because it’s operation
coincides with that of the compressor.
• The Slide Valve and the Slide Stop should be in Auto-
matic so they are controlled by setpoints and internal
control logic.
Note: If there is a shutdown in response to a safety set-
ting, a compressor in “Automatic” mode is placed into
“Manual” mode requiring operator intervention.
Remote Control of the Compressor:
The following digital outputs and inputs (on Digital Board 2)
have been provided that can be used to control the com-
pressor from another controller such as a PLC:
• (Module 1) Ready to Run - This output is energized
while the compressor is not shutdown and the Recycle
Delay has timed out.
• (Module 2) Remote Enabled - This output is energized
while the compressor is in Remote Start mode.
• (Module 3) Remote Start / Run / Stop - If the compres-
sor is in Remote Start mode with no Recycle Delay
time and this input is energized, the compressor is
started. If this input is energized and the compressor is
started, it will continue to run. If this input is de-ener-
gized, the compressor is stopped.
• (Module 4) Remote Load or Remote C.C step 1 for
step units
• Remote Load - If the Slide Valve is in Remote Mode
and this input is energized, the Slide Valve load
solenoid will be energized, provided there are no
safety overrides preventing loading.
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